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 I  NSTALLATION  I  NSTRUCTIONS

DLAS MODELS

(No Coil Cabinet)

DGAT & DGAM MODELS

(With Built --In Coil Cabinet)

For Installation In:1. Manufactured (Mobile) Homes2. Recreational Vehicles & Park

Models3. Modular Homes & Buildings

SEALED COMBUSTIONDOWNFLOW GAS FURNACESForced Draft with Direct Ignition (Hot Surface)

FURNACE SET--UP CHECK LIST

IMPORTANT: ONLY INDIVIDUALS HAVING PROVEN EXPERIENCE WITH THIS TYPE OF EQUIPMENTSHOULD ATTEMPT TO PERFORM SET--UP.

-   HAS ROOF JACK CROWN BEEN CORRECTLYINSTALLED?

-   HAS FURNACE GAS VALVE AND BURNERORIFICE BEEN CORRECTLY CONVERTEDFOR L.P. GAS WHERE APPLICABLE?

-   HAS FURNACE GAS VALVE BEEN DE--RATEDFOR ALTITUDES ABOVE 2000 FEET WHERE APPLICABLE?

-   IS GAS LINE OUTLET PRESSURE PROPERLY

SET FOR FUEL TYPE?  (NATURAL GAS IS 3.5”W.C.; L.P. IS 10” W.C.)

-   IS PRIMARY AIR PROPERLY ADJUSTED PERINSTALLATION INSTRUCTIONS?

-   IS CROSS--OVER DUCT INSTALLED PERHOME BUILDER AND EVCON INSTALLATIONINSTRUCTIONS?

-   HAS FURNACE BEEN OPERATED THROUGH A COMPLETE HEATING CYCLE?

IMPORTANT: PROPER FURNACE SET--UP AND ADJUSTMENT IS THE RESPONSIBILITY OF THERETAILER/HOMEOWNER AND IS NOT COVERED UNDER WARRANTY.

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TABLE OF CONTENTS

GENERAL SPECIFICATIONS AND INSTRUCTIONS 5. . . . . . . . . . . . . . . . . . . . . . .

FURNACE SPECIFICATIONS 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION STANDARDS 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Comply with Local Codes 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HIGH ALTITUDE INSTALLATIONS 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MINIMUM FURNACE CLEARANCES 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RETURN AIR REQUIREMENTS 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CLOSET INSTALLATIONS 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Furnace to Closet Door Clearance — Greater than 6 Inches 8. . . . . . . . . . . . . . . . . . . . . . . .

 Additional Requirements 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Floor or Ceiling Return Air System 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPECIAL CLOSET INSTALLATIONS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Furnace to Closet Door Clearance — Greater than 1 Inch and Less than 6 Inches 9. . . . .

Furnace to Closet Door Clearance — Less than 1 Inch 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

 AIR DISTRIBUTION SYSTEMS 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ROOF JACKS 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Locating and Cutting Roof Jack Opening 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing Roof Jack in Roof 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CEILING RINGS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DUCT CONNECTORS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TEMPLATE & CUTOUT DIMENSIONS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DLAS SERIES FURNACES 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installation Procedure for DLAS Furnace 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DGAT & DGAM SERIES FURNACES 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installation Procedure for DGAT & DGAM Furnaces 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONNECTING ROOF JACK TO FURNACE 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

 VENT SYSTEM INSTALLATION INSTRUCTIONS 17. . . . . . . . . . . . . . . . . . . . . . . . .EXISTING FURNACE REPLACEMENT 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NEW HOME INSTALLATION 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION IN SNOW REGIONS 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL WIRING 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CONNECT POWER SUPPLY WIRES 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONNECT THERMOSTAT WIRES 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WALL THERMOSTAT 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THERMOSTAT WIRING FOR DGAT AND DGAM SERIES 19. . . . . . . . . . . . . . . . . .

THERMOSTAT WIRING FOR DLAS (HEAT ONLY) SERIES 20. . . . . . . . . . . . . . . . .

WIRING DIAGRAMS 21--22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wiring Diagram for DGAT Series 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Diagram for DGAM Series 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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GAS PIPING 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INSTALLATION AND CHECKING OF GAS LINE 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Observing Burner Operation 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Combustion Air 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

If Furnace Fails to Operate Properly 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FINAL PROCEDURE 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Install Furnace Doors 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Finish and Trim 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Furnace and Air Conditioner Installations 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HIGH ALTITUDE DERATION CHART 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NATURAL GAS 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PROPANE GAS 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REPAIR PARTS 27--28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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4

LIST OF FIGURES

Figure 1 — Furnace Dimensions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 1 — Furnace Specifications 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 2 — Electrical Specifications 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 3 — Minimum Clearances 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2 — Alcove Installation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3 — Closet to Door Clearance — 6” or greater 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Figure 4 — Furnace to Closet Door Clearance — 1” to 6” 9. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 5 — Furnace to Closet Door Clearance — Less than 1” 9. . . . . . . . . . . . . . . . . . . . .

Figure 6 — Air Distribution Systems 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 7 — Location of Roof Jack Opening 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 4 — DLAS Roof Jacks 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 5 — DGAT & DGAM Roof Jacks 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 8 — DLAS Models 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 9 — DGAT & DGAM Models 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 10 — Ceiling Rings 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 6 — Duct Connectors 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 11 — Duct Connector Dimensions 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 12 — Template 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Figure 13 — Sub--base / Duct Connector 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 14 — Duct Connector 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 15 — Connecting Roof Jack to Furnace 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 16 — Electrical Power & Controls 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 17 — Thermostat Wiring 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 17a — Thermostat Wiring 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 18 — DGAT Series Wiring Diagram 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 19 — DGAM Series Wiring Diagram 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 20 — Natural Gas Flame Appearance 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 21 — Propane Gas Flame Appearance 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 22 — Anti--Backflow Damper 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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5

GENERAL SPECIFICATIONS AND INSTRUCTIONS

DGAT & DGAM SeriesDLAS Series

6 0 1 / 2 ”

76”

19--1/2”

9--3/ 4”

23”

24”

10--5/8”

19--1/ 2”

9--3/ 4”

23”

24”

10--5/8”

15--- 7/8”

15--- 7/8”

2”

1--- 7/8”

(on Sub --Base)

Figure 1 -- DLAS, DGAT, and DGAM Series Furnace Dimensions

IMPROPER INSTALLATION, ADJUSTMENT, SERVICE

OR MAINTENANCE CAN CAUSE INJURY OR PROPER-

TY DAMAGE.

PLEASE REFER TO ALL THE INSTRUCTIONS OF THIS

MANUAL FOR PROPER INSTALLATION PROCE-

DURES. IMPROPER INSTALLATION WILL VOID THE

WARRANTY.

THE FURNACE SHALL BE INSTALLED SO THE ELEC-

TRICAL COMPONENTS ARE PROTECTED FROM

WATER.

DO NOT TEST THE FUEL SYSTEM AT MORE THAN 14

INCHES WATER COLUMN AFTER FURNACE HAS

BEEN CONNECTED TO THE FUEL LINE. SUCH TEST-

ING MAY VOID THE WARRANTY. ANY TEST RUN

ABOVE 14 INCHES WATER COLUMN MAY DAMAGETHE FURNACE CONTROL VALVE WHICH COULD

CAUSE AN EXPLOSION, FIRE, OR ASPHYXIATION.

T h es e i n st r u ct i o ns a r e i n t e n de d f o r t h e u s e o f q u al i f ie d i n div i du a ls s p ec i al l y t r a in e d a n d e x pe r i en c ed i n i n st a l la t io n ot h i s t y p e o f e q ui p me n t a n d r e la t e d s y st e m c o mp o ne n t s.

I n s ta l la t io n a n d s e r vi c e p e rs o nn e l a r e r e qu i re d b y s o mes t a t e s t o b e l i c e n s e d .

Persons not qualified shall not install thisequipment ointerpret these instructions.

NOTE

The words “Shall”   or “Must”   indicate a requirement which isessential to satisfactory and safe product performance.

The words “Should”   or “May”   i n d i c at e a r e c om m en d at i o n oa dv ic e w hi ch i s n ot e ss en t ia l a nd n ot r e qu ir ed b ut w hi ch m ayb e u s ef u l o r h e lp f ul .

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6

FURNACE SPECIFICATIONS

TABLE 1 — Furnace Specifications

DGAM — Automatic ignition — with Built --in Coil Cabinet — 4 Ton -- A/C Ready

Model No. Factory Equipped for use with: Input /BTUH Output /BTUH

DGAM056BDE   NATURAL GAS 56,000 46, 000

DGAM075BDE   NATURAL GAS 75,000 61, 000

DGAT — Automatic Ignition — with Built--in Coil Cabinet — 3 Ton -- A/C Ready

Model No. Factory Equipped for use with: Input /BTUH Output /BTUH

DGAT056BDE   NATURAL GAS 56,000 46, 000

DGAT070BDE   NATURAL GAS 70,000 57, 000

DGAT075BDE   NATURAL GAS 75,000 61, 000

DGAT090BDE   NATURAL GAS 90,000 72, 000

DLAS — Automatic Ignition — Heating Only — No Coil Cabinet

Model No. Factory Equipped for use with: Input /BTUH Output /BTUH

DLAS056BDE   PROPANE 56,000 47, 000

DLAS075BDE   PROPANE 75,000 62, 000

TABLE 2 — Electrical Specifications

E l ec t r ic a l P o we r S u pp l y —     120 Volts — 60 Hz — 1 Phase

B r e a k e r o r F u s e —     15 Amp

Thermostat Circuit —    24 Volt — 60 Hz — 40 VA

Nominal Anticipator Setting —    .50

G a s V a lv e I n l et —     1 / 2” NFPT

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7

INSTALLATION STANDARDS

Comply with Local Codes

T h e i n st a l le r s h al l f a m il i ar i ze h i ms e lf w i t h a n d c o m p l y w i t h a l llocal codes and regulations which govern the installation of t h i s a p p l ia n ce . L o ca l c o de s a n d r e g u l at i on s s h al l t a k e p r e c e -d en t o ve r t h es e r e gu la t io ns w he re a pp li ca bl e. I n l ie u o f l oc al

c o de s , t h e a p pl i an c e s h al l b e i n st a l le d i n a c co r da n ce w i t h:

In the U.S.A.:

t h e N a t io n al E l ec t r ic a l C o de , i n a c co r da n ce w i t h r e co m -m e n d a t i o n s m a d e b y t h e N a t i o n a l B o a r d o f F i r e U n d e r -w r i te r s , i n a c co r da n ce w i t h t h e t h e A m er i c an N a t io n alS ta nd ar d I ns ti tu te N at io na l F ue l G as C od e ( An siZ223.1/NFPA--54).

T h e i n st a l la t io n m u st c o nf o r m w i t h:

local building codes,F e de ra l M an uf a ct u re d H om e C on st r uc t io n & S a fe t yS t a nd a rd ( H . U. D . T it l e 2 4 , P a r t 3 2 80 ) ,o r i n t h e a b s e n c e o f l o c a l c o d e s w i t h :

 American National Standard Mobile Homes A225.1 fori n st a l la t i on i n m o bi l e h o me s , a n d A m er i c an N a t io n alStandard (ANSI--C1/NFPA--70) for all electrical wiring,and American National Standard (A119.2/ NFPA--501C)for installation in recreational vehicles.

In Canada:

Manufactured (Mobile) Homes:U n it i n st a l la t io n s h al l c o mp l y w i t h c u r re n t C S A s t a nd a rdCAN/CSA--Z240.4.1 -- Installation Requirement for GasBurning Appliances in Mobile Homes.

U n it e l ec t r ic a l w i ri n g a n d g r ou n di n g s h a l l c o mp l y w i t hc ur r en t s t an da r d C SA C 22 . 1 -- C an ad ia n E l ec t ri ca lC o d e P a r t 1 .

Recreational Vehicles:U n it i n st a l la t io n s h al l c o mp l y w i t h c u r re n t C S A s t a nd a rdC A N /C G A -- Z 2 4 0. 4 . 2 -- I n s ta l la t i on R e qu i re m en t s f o rP r o pa n e A p pl i an c es a n d E q ui p me n t i n R e cr e at i o na l V e-hicles.

U n it e l ec t r ic a l w i ri n g a n d g r ou n di n g s h a l l c o mp l y w i t hc ur re nt C SA s ta nd ar d C 22 .2 N o. 14 8/ CA N/ CS A --Z240.6.2 -- Electrical Requirements for recreational ve-hicles.

HIGH ALTITUDE INSTALLATIONF o r e l ev a t io n a b ov e 2 , 00 0 f e e t, d e ra t e f u r na c e o r i f i ce4 % f o r e a c h 1 , 0 00 f e et o f e le va t io n a bo ve s ea l ev el . D er -a t i ng i s a c co m pl i sh e d b y r e du c in g t h e o r i fi c e s i ze .S e e D e ra t i ng C h ar t f o r o r if i c e s i z e .

MINIMUM FURNACE CLEARANCES

 Access for servicing is an important factor in the location oa n y f u r n a c e . A m i n i m u m o f 2 4 i n c h e s s h o u l d b e p r o v i d e d i nf r o n t o f t h e f u r n a c e f o r a c c e s s t o t h e h e a t i n g e l e m e n t s a n dc on t ro ls . T h is a cc es s m ay b e p ro vi de d b y a c lo se t d oo r o r b y

l oc at i ng t h e f u rn ac e 2 4 i nc he s f r om a f ac in g w al l o r p ar t it i on

T h es e f u r na c es a r e d e si g n c e r ti f i ed f o r t h e f o l lo w in g m i nim um c le ar a nc es f r om c om bu st i bl e m at e ri al i n a lc ov e ocloset installation:

TABLE 3 — Minimum Clearances

C LO SET AL C OV E

BAC K 0 ” 0 ”

SID ES 0 ” 0 ”

FR O NT 6 ” 2 4 ”

TOP 2 ” 2 ”

R OOF JAC K 0 ” 0 ”

D UC T 0 ” 0 ”

 ALCOVE

20”

Minimum

23--1/ 2”

Figure 2 — Alcove Installation

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8

RETURN AIR REQUIREMENTS

CLOSET INSTALLATIONS

Figure 3 — Closet to Door Clearance — 6” or greater

CLOSET

FURNACE

DOOR

6 ” o r g r ea t er —  C l o s e t t o D o o rClearance

Furnace to Closet Door Clearance — Greater than 6 Inches

T h e c lo se t d oo r   MUST   h av e a m in im um o f    250Square Inches   o f f r e e a r e a i n t h e u p p e r h a l f o f t h edoor.

I f t he o pe ni ng f or r et ur n a ir i s l oc at ed i n t he s id e-w a l l a n d b e l o w t h e t o p o f t h e f u r n a c e c a s i n g :

a . t ot al s id e r e tu rn m us t e q ua l o r e xc ee d3 5 0 s q . i n . f r e e a r e a

b . 6 ” m i n. c l e ar a nc e m u st b e p ro vi de d o nt h e s i d e w h e r e t h e r e t u r n i s l o c a t e d

R e t u r n A i r G r i l l e P a r t N o .7 9 0 0 -- 2 8 6 P / A — A l m o nd7 9 0 0 -- 2 8 7 P / A — W h i t e

R e t u r n A i r C l o s e t D o o r P a r t N o .7 9 0 0 -- 8 8 8 1 — A l m o nd7 9 0 0 -- 7 7 7 1 / C — W h i t e

c . 6 ” m in . c le ar an ce m us t b e m ai nt a in edi n f r o n t o f t h e f u r n a c e .

Additional Requirements

 Additional requirements for floor and ceiling return systemf o r c l os e t i n st a l le d s e al e d c o mb u st i o n h e at i n g a p pl i an c e a r eg i ve n i n t h e n e xt p a ra g ra p h.

Floor or Ceiling Return Air System

F l oo r o r c e il i ng r e t ur n a i r s y st e m f o r c l o se t i n st a l le d d i re c tvent forced air heating appliance.

L is t ed i n t h e n ex t p ar ag r ap h a re t h e c on di t io ns t o b e m e t b yM o bi l e H o me M a nu f ac t u re r s t o h a ve U . L . a c ce p ta n ce o f i n --f l o or o r c e il i ng r e t ur n a i r s y st e m s o f c l os e t i n st a l le d d i re c tv e nt f o r ce d a i r h e a t i ng a p pl i an c es f o r M o bi l e H o m e s t o b es o l d i n t h e U n i t e d S t a t e s .

 A. The return--air opening into the closet, regardless of lo-c at io n, i s t o b e s iz ed n ot l es s t ha n s pe ci fi ed o n t heappliance’s rating plate.

B . I f t he r e tu rn -- a i r o pe ni ng i s l oc at e d i n t h e f l oo r o f t h e c lo s-e t ( v e r s u s t h e v e r t i c a l f r o n t o r s i d e w a l l ) , t h e o p e n i n g i st o b e p ro vi de d w it h m ea ns t o p r ev en t i t s i na dv er t en t c lo -s u r e b y a f l a t o b j e c t p l a c e d o v e r t h e o p e n i n g .

C . T he c ro ss -- s ec t io na l a r e a o f t h e r e t ur n d u c t s y st e m( w he n l o c at e d i n t h e f l oo r o r c ei li ng o f t h e m o bi le h om e)l ea di ng i nt o t h e c l os et i s t o b e n o t l es s t h an t h at o f t h eopening specified on the appliance’s rating plate.

D . T h e t o t al f r ee a re a o f o pe ni ng s i n t h e f l oo r o r c ei li ng r eg is -t e r s s e r v i ng t h e r e t u r n -- a i r d u ct s y st e m i s t o b e n o t l e s st h an 1 50 % o f t h e s iz e o f t h e o p e ni ng s pe ci f ie d o n t h e

a p p l i a n c e ’ s r a t i n g p l a t e . A t l e a s t o n e s u c h r e g i s t e r i s t ob e l o c a t e d w h e r e l i k e l i h o o d o f i t s b e i n g c o v e r e d b y c a r -p e ti n g, b o xe s , a n d o t he r o b je c t s i s m i ni m iz e d.

E . M at er ia ls l oc at ed i n t he r et ur n d uc t s ys te m h av e a f la me

s p re a d c l a s s if i c at i o n o f 2 0 0 o r l e ss .

F. N on -- c o mb us t ib le p an s h av in g o ne -- i n ch u pt u rn edf l an g es a r e l o ca t e d b e ne a t h o p en i ng s in t h e f l o or r e t ur nduct system.

G . W i r in g m a t er i a ls l o c at e d i n t h e r e t u rn d u c t s y s t em c o nf or m t o A r ti cl e 3 00 -- 2 2 ( b& c ) o f t h e N at i on al E le ct r icC o de ( A N SI C 1 / N F PA -- 7 0 ) .

H . G a s p ip in g i s n ot r un i n o r t h ro ug h t h e r e t ur n d u ct s ys t em

I . T he n e g at i ve p r e ss ur e i n t h e c l o se t a s d et e rm in ed b yt e s t w i t h t h e a i r -- c i r c ul a t in g f a n o p er a t in g a t h i gh h e at i n gs pe ed a nd t h e c l o se t d oo r c lo se d i s t o b e n o t m or e n eg a

tive than minus 0.05--inch water column.

J . F o r f l o or r et u r n s y st e m s, t h e m o bi l e h o me m a nu f a ct u r eo r i ns t al le r s ha ll a ff i x a p ro mi ne nt m ar k in g o n o r n ea r t h ea pp li an ce w he r e i t i s e as il y r ea d w he n t h e c lo se t d oo r i so p en . T h e m a r ki n g s h al l r e ad :

HAZARD OF ASPHYXIATION

DO NOT COVER OR RESTRICT FLOOR OPENING

or equivalent.

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SPECIAL CLOSET INSTALLATIONS

Furnace to Closet Door Clearance — Greater than 1 Inch and Less than 6 Inches

Figure 4 — Furnace to Closet Door Clearance — 1” to 6”

 As a n o p ti o n to th e l o we r g ri l l ,a n u n d e r c u t o f 2 1 / 2 ” w i l l p r o v i d e5 0 S q . I n . o f f r e e a r e a .

Clearance — Greater than 1 Inch andLess than 6 Inches

 A. The closet door MUST   h a ve a m i ni m umof  250 Square Inches   o f f r ee a re a i n t h eu pp er h al f o f t h e d o or a nd a m in im um o f  50 Square Inches o f f re e a r ea i n t h e l ow -e r a r ea o f t h e d oo r.T he l ow er c los et do or gr il le m ay beo mi t te d i f a n u n d er c ut o f 2 1 / 2 I n c he s i s

p r o v i d e d i n t h e d o o r .

B . A f u l ly l o uv e r ed c l os e t d oo r MUST   h a v e am i ni m um o f   250 Square Inches   o f f r eea re a i n t h e u p pe r h al f o f t h e d o or.

Furnace to Closet Door Clearance — Less than 1 Inch

Figure 5 — Furnace to Closet Door Clearance — Less than 1”

Clearance — Less than 1”

T h e c l os e t d o or MUST h a ve t h r ee r e t ur n a i r g r i ll e s.T he t ot al f re e a r ea o f t he t wo upper g r il l es m u st b ea m i n i m u m o f   250 Square Inches.   T h e t o t a l f r e e

a re a o f t he lower grille MUST   be a m in im um o f   50Sq. In.

NOTE: Each grille MUST BE ALIGNED directlyopposite the corresponding return air grille ofthe furnace door.

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AIR DISTRIBUTION SYSTEMS

F o r p r o p e r a i r d i st r i bu t i on , t h e s u p p ly d u ct s y st e m s h al l b ed es ig ne d s o t h at t h e s t at i c p re ss ur e d oe s n ot e xc ee d t h el i st e d s t a ti c p r es s ur e r a t in g o n t h e f u r na c e r a t i n g p l at e .

T h r ee t y p ic a l d i st r i bu t i on s y st e ms a r e i l l us t r at e d i n F i g ur e 6.

L o ca t i on , s i ze a n d n u m b er o f r e gi s t er s s h ou l d b e s e le c t edo n t he b as is o f b es t a ir d is tr ib ut io n a nd f lo or p la n o f t hehome.

T h e A i r T e m p e r a t u r e R i s e i s t o b e a d j u s t e d t o o b t a i n a t e mp e ra t u re r i s e w i t hi n t h e r a ng e ( s) s p ec i f ie d o n t h e f u r n ac erating plate.

A

Single trunk duct

D u a l t r u n k d u c t

Transition duct

 *  BS   1 C r os s ov e r D u ct m u st b e c e nt e r ed d i re c t ly under   furnace.

S   2 Use 12” Diameter Round or equivalent insulated Flex--duct only.

S   3 Terminate Flex--duct (opposite furnace) in the center   o f t h e t r u n k d u c t .

S   4 F l ex -- d u c t m a t er i al m u st b e p u ll e d t i g h t — N o L o op s o r u n ne c es s ar y d i ps —   Air Flow may be impeded.

1

2

3

4

B * D u al t r u nk d u ct w i t h c r os s ov e r c o nn e ct o r

C r o s s o v e r

C

Transition Duct with Branches

Branches

Figure 6 — Air Distribution Systems

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ROOF JACKS

Only use the appropriate roof jack.

See TABLE 4 & TABLE 5 for correct application.

Do not exceed the maximum heightas determined fromTABLE 4 & TABLE 5. Installer should allow an addition-al 1--1 / 2” travel before the flue pipe assembly is fully ex-tended against the built--in stop. This provides an addi-tional safeguard against the flueassembly being pulledfrom the roof jack during transportation or other stressconditions.

Improper installation may damage the equipment, cancreate a hazard, and will void the warranty.

Carefully follow all instructions and warnings to avoidFire, Explosion, Or Asphyxiation.

Locating and Cutting Roof Jack Opening

To f a c il i t at e t h e p r o p er i n st a l la t i on o f t h e r o o f j a ck , i t i s v e r yi mp or t an t t h at t h e r o o f j ac k o pe ni ng i n t h e c ei li ng a nd r oo f b eo n t h e s a me v e rt i c al c e nt e r l i ne a s t h e f u r n a ce f l u e c o l l ar .

S e e F i g u r e 7 .

T he d im en si on s s ho wn i n F i gu re 7 m ay b e u se d i f t h e f u r -n ac e i s f lu sh w it h t he w al ls o r a dj us te d t o a ll ow f or a ny s pa c-i n g a w a y f r o m e i t h e r w a l l .

M a r k t h i s l o c a t i o n o n c e i l i n g a n d s c r i b e a c i r c l e w i t h a 5 ” r a -d i us ( 1 0” d i am e t er ) a r ou n d t h i s m a r k. C u t o p en i ng f o r r o of  

 jack through ceiling and roof. (If furnace was installed dur-ing construction, cover furnace and flue opening to

prevent debris from entering flue and combustion airwhen hole is cut for roof jack.)

9--3/ 4”   12--1/ 4”

M a r k C e n t er

Figure 7 — Location of Roof Jack Opening

TEMPLATE FRO NT

T h e s e d i m e n s i o n s m a y b eu s e d i f f u r n a c e f i t s s n u ga g a in s t w a l l .

Installing Roof Jack in Roof(See Figure 8 & Figure 9 for Dimensional requirements.)

I n s e r t r o o f j a c k i n t o o p e n i n g i n t h e r o o f .

The roof jack should be secured to the furnace beforeroof flange (flashing) is secured to the roof.   T h i s w i l l i n -

s ur e a b et t er a li gn me nt o f t h e f l ue p ip e a n d f ur n ac e f l u e c oll a r. C a ul k c o mp l et e ly a r ou n d t h e u n de r s id e o f t h e r o of j a ckf l as hi ng t o p ro vi de a r a in t i gh t s ea l, b ef o re s ec ur in g r o of j ac kf l as hi ng t o r oo f . A f te r r o of j ac k f l as hi ng h as b ee n s e c ur e d t ot h e r o o f, c a ul k c a re f u ll y a l l a r o u nd s w iv e l j o i n t w i t h s e a la nsupplied by furnace manufacturer.

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TABLE 4 — DLAS Roof Jacks

R o o f J a c k   In sta l l a ti o n Di me n si o n sMo d e l

Nu mb e r¡

 Ad j u sta b l e He i g h t

4 0 0 0 -- 71 2 1 /C 7 5 ” to 8 6 ”   T h e s e d i m e ns i o n s a r e

4000--7141/C  **    8 3 ” t o 1 0 4”   f r om t h e f l oo r t o t h e

4000--7151/C  **    9 0 ” t o 11 6 ”  t o p s i de o f t h e r o of .

S ee F i u re 8 .4 0 0 0 -- 71 7 1 /C 1 2 7 ” to 1 5 7 ”

.

4000--8161/C  *+   8 5 ” t o 1 0 1”

4000--8181/C  *+   9 9 ” t o 1 2 9”

 *    T h e s e j a c k s h a v e r e m o v ab l e c r o w n s.

Note:   I t i s r e c o m me n d e d t h a t t h e 7 9 0 0 -- 6 1 7 1 ( 1 7 ” ) I n t er i o re x te n s io n b e u s e d w i t h t h es e m o d e ls . I f u s e d r e f e r t oT A B L E 5 f o r s i z i n g o f r o o f j a c k .

 **   A v a i la b l e w i t h 3 -- 1 / 2 , 1 2 P i t c h F i x e d F l a s h in g .Mo d e l s 4 0 0 0 --6 1 4 1 a n d 4 0 0 0 --6 1 5 1+   A v a i la b l e w i t h 3 -- 1 / 2 , 1 2 P i t c h F i x e d F l a s h in g .Mo d e l s 4 0 0 0 --9 1 6 1 a n d 4 0 0 0 --9 1 8 1

TABLE 5 — DGAT & DGAM Roof Jacks

R o o f J a c k   In sta l l a ti o n Di me n si o n sMo d e l

Nu mb e r¡

 Ad j u sta b l e He i g h t

4 0 0 0 -- 71 0 1 /C 8 6 ” to 9 5 ”   T h e s e d i m e ns i o n s

4 0 0 0 -- 71 2 1 /C 9 1 ” to 1 0 2 ”   a r e f r om t h e f l oo r t o

4000 -- 7141/C  **    9 9 ” t o 1 2 0”  t h e t o p s i de o f t h e

r oo f. S e e F i u re 9 .4000 -- 7151/C  **    1 0 6 ” t o 1 3 2”

. .

4 0 0 0 -- 71 7 1 /C 1 4 3 ” to 1 7 3 ”

4000 -- 8161/C  *+   1 0 1 ” t o 11 7 ”

4000 -- 8181/C  *+   11 5 ” t o 1 4 5 ”

 *    T h e s e j a c k s h a v e r e m o v ab l e c r o w n s .

 **   A v a il a b le w i t h 3 -- 1 / 2 , 1 2 P i t c h F i x e d F l a s h in g .Mo d e l s 4 0 0 0 --6 1 4 1 a n d 4 0 0 0 --6 1 5 1+   A v a i la b l e w i t h 3 -- 1 / 2 , 1 2 P i t c h F i x e d F l a s h in g .Mo d e l s 4 0 0 0 --9 1 6 1 a n d 4 0 0 0 --9 1 8 1

ROOF FLANGE IS ADJUSTABLE UP TO 23” (5 --12 PITCH)

W A R M A I R D U C TDUCT CONNECTOR

ROOF

76”

CAULK CAREFULLY ALL AROUND

SWIVEL JOINT WITH SEALANTSUPPLIED BY FURNACEMANUFACTURER.

SEAL ROOF JACK FLASHING TO THE ROOFJACK AND ROOF.

THIS IS THE INSTALLER’S RESPONSIBILITY.

60--1 /2”

W AR M A IR D UC T D UC T C ON NE CT OR

FLOOR

FLUEGASES

COMBUSTION  AIR

CAULK   UNDERFLASHING T h e B e ad o r E n d o f U p p e r P o rt i on

o f R o of J a c k n e ed Not   extendb e l o w t h e c e i l i n g .

(INCLUDES

SUB--BASE)

1 9 1 / 2 ”

CAULK   UNDERFLASHING

 

FLUEGASES

COMBUSTION  AIR

1 9 1 / 2 ”

Figure 8 — DLAS Models   Figure 9 — DGAT & DGAM Models

NOTE:

IMPORTANT

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CEILING RINGS

T h e c e il i ng r i n g i s t o m e et f i r e s t o p r e qu i r em e nt s . A c c es -s o r y C e i l i ng R i ng ( P / N 7 6 60 -- 2 8 4 1) m a y b e u s ed , ( s eeF i g ur e 1 0 ) o r t h e m o bi l e h o m e m a nu f ac t u re r o r t h e i n -s t a ll e r m a y u s e o t h e r a p p r ov e d m e t h od s t o s t o p f i r e .

I f r e qu ir ed , t h re e ( 3 ) s ec t io ns o f A c ce ss or y R in g m ay b eu se d a s s ho wn i n F i gu r e 1 0B t o p r ov id e c lo se r c le ar -a n ce a r ou n d r o o f j a ck .

Figure 10 — Ceiling Rings

A B

DUCT CONNECTORS

T h e d u c t c on ne ct o r i s d es ig ne d f o r u se o n d uc t s d ow n t o 1 2i n w i dt h . W h en u s in g t h e c o n n ec t o r o n s m al l er w i dt h d u ct st h er e w il l n ot b e s uf f ic ie nt c l e ar an ce t o b en d t h e t a bs o n t w os i de s o f t h e d u ct c o nn e ct o r.

I n s u c h c a s e s t h e t a b s m a y b e a t t a c h e d t o t h e s i d e s o f t h e

d u ct b y u s in g s h ee t m e t al s c r ew s o r o t he r s u it a b le f a s te ne r s . H o l e s f o r s h ee t m e t al s c r ew s a r e p r o v id e d i n t h r ee ( 3t a bs o n e a c h s i de o f t h e d u ct c on ne ct o r. I f m or e t h an 3 t a bsn e e d t o b e u s e d t o p r o v i d e a m o r e s e c u r e a n d a i r t i g h t c o n -n ec t io n, t h e r em ai ni ng t a bs c an a ls o b e f a st e ne d t o t he d ucw i t h s c r e w s a f t er d r il l in g t h e r e qu i r ed s c r ew h o le s .

I f t ap e i s u se d t o p ro vi de a b et te r a ir s ea l, i t s ho ul d b e a t yp ea p pr o v ed b y t h e a p pl i ca b le n a t io n al o r l o ca l c o de s .

TABLE 6 — Duct Connectors

Sales Package Part Number Depth

7681 -- 6621 7681 -- 602 2” Duct Connec tor — F or Duct s 1 -- 1/ 8” below t op of f loor sur face

7681 -- 6631 7681 -- 603 3” Duct Connec tor — F or Duct s 2 -- 1/ 8” below t op of f loor sur face

7681 -- 6651 7681 -- 605 5” Duct Connec tor — F or Duct s 4 -- 1/ 8” below t op of f loor sur face

7681 -- 6661 7681 -- 606 6” Duct Connec tor — F or Duct s 5 -- 1/ 8” below t op of f loor sur face

7681 -- 6671 7681 -- 607 7” Duct Connec tor — F or Duct s 6 -- 1/ 8” below t op of f loor sur face

7681 -- 6681 7681 -- 608 8” Duct Connec tor — F or Duct s 7 -- 1/ 8” below t op of f loor sur face

7681 -- 6691 7681 -- 609 9” Duct Connec tor — F or Duct s 8 -- 1/ 8” below t op of f loor sur face

7681 -- 6611 7681 -- 611 11” Duct Connect or — F or Duct s 10 -- 1/ 8” below t op of f loor sur face

7681 -- 6711 7681 -- 612 12” Duct Connect or — F or Duct s 11 -- 1/ 8” below t op of f loor sur face

TEMPLATE & CUTOUT DIMENSIONS

14”

13--9 /16”

11--9/16”

D u c t C u t o u tDimensions

12”

NOTE:D u c t C o n n ec t or m ay b e u s e dp o s i t i o n e d i n a n y o f f o u r ( 4 ) )p o s i t i o n s t o f i t d u c t .

Figure 11 — Duct Connector Dimensions

C a s i n g F r o n t

D o o r F r o n t

15--7 /8”

9--7 /8”12--1 /4”

15--7/8”1--1 3/16

9--3/ 4”

23”

1”

Floor Cut--out Line

F l u e C e n t e r

DuctLocatingHole

1--1 5/16”

Figure 12 — Template

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DLAS SERIES FURNACES

Installation Procedure for DLAS FurnaceT h e f o l l o w i n g s t e p s a r e l i s t e d f o r i n s t a l l a t i o n o f f u r n a c e a n dn e e d n o t b e p e r f o r m e d i n t h e e x a c t o r d e r a s l i s t e d .

F o ll o w t h i s p r o c ed u r e t o a v oi d s e r io u s m i s a li g nm e nt o f f u r -n a ce d u ct c o nn e ct o r o p en i ng a n d s u pp l y d u ct .

A. This Furnace requires a SUB--BASE (Included)

F o r c o n v en i en c e, a t e m pl a t e i s p r o v i de d o n t h e f u r na c es h i p p i n g c a r t o n . T h i s m a y b e c u t o u t a n d u s e d t o a c c u -r a te ly l oc at e f u rn ac e, f l oo r a nd v en t o pe ni ng s. S eeF i g ur e 1 2 .

L o ca t e t e mp l at e o n f l o or t o p r ov i de p r op e r c l ea r an c es t ot h e w a l ls a nd t h e f r o nt . C ut 2 ” d ia me t er h ol e o r s ma lls q ua r e h o le a s i n di c at e d o n t e m pl a t e.

L o c a t e t e m p l a t e s o t h a t f u r n a c e o p e n i n g o u t l i n e i s c e n -t e r ed o v er u n de r -- f l o o r s u pp l y d u ct a s a c cu r at e l y a s p o s-s i bl e . T h i s i s i m po r t an t b e ca u se o f t h e l i mi t ed a d ju s t -m en t f ro m s id e t o s id e, a nd f ro m f ro nt t o r ea r o f t he d uc tconnector.

L o ca t e u n de r -- f l o or d u ct t h r ou g h h o le a n d c e nt e r “ f l oo rcut--out opening” on template over duct.

 Accurately cut “floor cut--out opening” from template,m a r k f l o o r o p e n in g , r e mo v e t e m p la t e a n d c u t f l oo r o no u t si d e e d ge o f m a rk e d l i ne .

Position sub--base over hole.

D u ct c o nn e ct o r s w i ll f i t o p en i ng s o f s u b -- b a s e i n a n y o n e o f  f o u r ( 4 ) p o s i t i o n s . P l a c e p r o p e r d u c t c o n n e c t o r i n t h e o p e n -i ng i n t h e b es t p os it i on , ( du ct c on ne ct o r m ay b e s hi f te d i n e i-t h er d i r ec t i on f o r b e st l o ca t i on ) .

M ar k d uc t o pe ni ng w it h a s cr i be o r m ar k in g p en , t h en r e-m ov e d uc t c on ne ct o r. C ut h ol e i n d uc t t o c or r ec t s iz e a cc or d-

i ng t o d im en si on s s ho wn i n F i gu r e 11 . C ut d uc t a cc ur at e ly t oprevent air leakage.

R e i n s t a l l d u c t c o n n e c t o r w i t h t a b s i n s i d e o f h o l e i n t h e d u c ta n d b e n d t a b s u p f i r ml y a g ai n st u n de r ne a th s i de o f d u ct .

S e c u r e d u c t c o n n e c t o r w i t h f o u r ( 4 ) s h e e t m e t a l s c r e w s u si n g h o l es p r ov i de d i n t h e c o nn e ct o r, a n d t h e s u b -- b a s e. S e eFigure 13.

S e cu r e s u b -- b a s e t o f l o or w i t h 2 o r m o r e s c r e ws o r n a il s .

B. Install Furnace

C he ck t o m ak e s ur e r oo f j ac k i s n ot e xt e nd in g t o o f ad o wn i n t o f u r na c e l o ca t i on . S l id e f u r na c e i n t o l o ca t i ona n d a l ig n o v er f l o or o p en i ng .

Pre--cut openings and knock--outs are provided in furn ac e b as e t o i ns t al l a f r on t f u el l in e a nd / or f r on t r ef r ig erant lines. If rear entrance lines are to be used, theymust be installed before the duct connector is installed and secured in place.

For air conditioning lines, remove the knock--out.

C. Securing FurnaceM ak e a ny m in or a dj us t me nt s i n t h e f u rn ac e l oc at i onn e ce s sa r y t o i n s ur e t h at t h e o p en i ng i n t h e f u r na c e b o tt om i s c en te r ed o ve r t h e o pe ni ng i n t h e d u ct . S ec ur e f u rn a ce t o s u b -- b a s e, a s r e qu i re d , t h r ou g h h o l e s a t f r o na nd r ea r o f f u rn ac e. H ol es f o r s cr e ws a re l oc at e d i n b ott o m f l an g e f r o n t c o r ne r s a n d r e ar f l a ng e s.

S e c u r e f u r n a c e t o w a l l a t t o p b y u s i n g m e t a l s t r a p p r o -v i de d . ( S e e F i g u r e 1 3 .)

M a nu f ac t u re r s m a y a d d s t r ap s e q ui v al e nt t o p r ov i de ds t ra ps , i f r e qu ir ed , f o r s ec ur in g f u rn ac e t o s t ru ct u ramember.

S e c u r e S u b -- b a s e t of l oo r f i r ml y w i t h 2 o rm o r e s c r e w s O rnails.

S e c u r e d u c t c o n n e c t o rt o s u b -- b a s e w i t h 4s c r e w s .

U s e s c r e w h o l es i n s u b -- b a s et o f a s t e n d u c t c o n n e c t o r .

B e n d t a b s o f d u c tc o n n e c t o r u n d e r d u c to p e n i n g t o s e c u r e t o t h es u p p l y d u c t .

S e c u r e s u b -- b a s e t of l o o r w i t h 2 n a i l s o rs c r e w s .

TABS TABS

DUCT DUCT

1..   I n s e r t Du c t P l en u m C on -n e c t o r I n t o D u c t C u t -- o u t .

2.. B en d B ot to m Ta bs O v e r A nd O n toT h e U n d e r n e a t h D u c t S e r v i c e .

F o r i m p r o v e d a i rs e a l , d u c tconnector flangesm a y b e s e a l e d t ot h e s u b -- b a s e w i t h

aluminum ducttape.

Figure 13 — Sub--base / Duct Connector

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DGAT & DGAM SERIES FURNACES

Installation Procedure for DGAT & DGAMFurnaces

T h e f o l l o w i n g s t e p s a r e l i s t e d f o r i n s t a l l a t i o n o f f u r n a c e a n dn e e d n o t b e p e r f o r m e d i n t h e e x a c t o r d e r a s l i s t e d :

F o ll o w t h i s p r o c ed u r e t o a v oi d s e r io u s m i s a li g nm e nt o f f u r -n a ce d u ct c o nn e ct o r o p en i ng a n d s u pp l y d u ct .

A. This Furnace requires NO sub--base

F o r c o n v en i en c e, a t e m pl a t e i s p r o v i de d o n t h e f u r na c es h i p p i n g c a r t o n . T h i s m a y b e c u t o u t a n d u s e d t o a c c u -r a te ly l oc at e f u rn ac e, f l oo r a nd v en t o pe ni ng s. S eeF i g ur e 1 2 .

L o ca t e t e mp l at e o n f l o or t o p r ov i de p r op e r c l ea r an c es t ot h e w a l ls a nd t h e f r o nt . C ut 2 ” d ia me t er h ol e o r s ma lls q ua r e h o le a s i n di c at e d o n t e m pl a t e.

L o c a t e t e m p l a t e s o t h a t f u r n a c e o p e n i n g o u t l i n e i s c e n -t e r ed o v er u n de r -- f l o o r s u pp l y d u ct a s a c cu r at e l y a s p o s-s i bl e . T h i s i s i m po r t an t b e ca u se o f t h e l i mi t ed a d ju s t -m en t f ro m s id e t o s id e, a nd f ro m f ro nt t o r ea r o f t he d uc tconnector.

L o ca t e u n de r -- f l o or d u ct t h r ou g h h o le a n d c e nt e r “ f l oo rcut--out opening” on template over duct.

 Accurately cut “floor cut--out opening” from template,m a r k f l o o r o p e n in g , r e mo v e t e m p la t e a n d c u t f l oo r o no u t si d e e d ge o f m a rk e d l i ne .

D u c t c o n n e c t o r s w i l l f i t o p e n i n g i n a n y o n e o f f o u r ( 4 ) p o s i -t i on s. P la ce p ro pe r d uc t c on ne ct o r i n t h e o pe ni ng i n t h e b es tp o si t i on , ( d uc t c o nn e ct o r m a y b e s h if t e d i n e i t he r d i re c t io nfor best location).

M ar k d uc t o pe ni ng w it h a s cr i be o r m ar k in g p en , t h en r e-m ov e d uc t c on ne ct o r. C ut h ol e i n d uc t t o c or r ec t s iz e a cc or d-i ng t o d im en si on s s ho wn i n F i gu r e 11 . C ut d uc t a cc ur at e ly t oprevent air leakage.

R e i n s t a l l d u c t c o n n e c t o r w i t h t a b s i n s i d e o f h o l e i n t h e d u c ta n d b e n d t a b s u p f i r m l y a g a i ns t u n de r ne a th s i de o f d u ct .

S ec ur e d uc t c on ne ct o r t o f l oo r w it h f o ur ( 4 ) s he et m et a ls cr ew s u si ng h ol es p ro vi ded i n t he c on ne ct or. S eeFigure 14.

B. Install Furnace

R em ov e p an el f r om a ir c on di t io ni ng c om pa r tm en t .C he ck t o m ak e s ur e r oo f j ac k i s n ot e xt e nd in g t o o f a rd o wn i n t o f u r n a c e l o c a t io n . S l id e f u r na c e i n to l o ca t io na n d a l ig n o v er f l o or o p en i ng .

Pre--cut openings and knock--outs are provided in f ur-n ac e b as e t o i ns t al l a f r on t f u el l in e a nd / or f r on t r ef r ig er -ant lines.  If rear entrance lines are to be used, theymust be installed before the duct connector is in-stalled and secured in place.

For air conditioning lines, remove the knock--out.

C. Securing Furnace

M ak e a ny m in or a dj us t me nt s i n t h e f u rn ac e l oc at i onn e ce s sa r y t o i n s ur e t h at t h e o p en i ng i n t h e f u r na c e b o tt om i s c en te r ed o ve r t h e o pe ni ng i n t h e d u ct . S ec ur e f u rn ac e t o f l oo r, a s r eq ui r ed , t h ro ug h h ol es a t f r on t a nd r e ao f f u r na c e. H o le s f o r s c r ew s a r e l o ca t ed i n b o t to m f l a ng ef r o nt c o r ne r s a n d r e ar f l a ng e s.

S e c u r e f u r n a c e t o w a l l a t t o p b y u s i n g m e t a l s t r a p p r o -v i de d . ( S e e F i g u r e 1 4 .)

M a nu f ac t u re r s m a y a d d s t r ap s e q ui v al e nt t o p r ov i de ds t ra ps , i f r e qu ir ed , f o r s ec ur in g f u rn ac e t o s t ru ct u ramember.

SUPPLY DUCTOPENING

F u e l L i n eOpening

U s e s c r e w h o l e s i n f u r n a c eb a s e t o f a s t en t o d u c t c o nn e c -t o r ( r e l a t i v e t o p o s i t i o n o f d u c tc o n n e c to r ) .

S e c u r e f u r n a c e t o d u c tc o n n e c t o r b a s e w i t h 4

s c r e w s .

RefrigerantL i n e O p e n i n g

FurnaceBase

B e n d t a b s o f  d u c t c o n n e c t o ru n d e r d u c to p e n i n g t o s e -c u r e t o t h e s u p -p l y d u c t .

TABS TABS

DUCT DUCT

1.   I n s e r t D u c t P l e n umC o n n e c t o r I n t o D u c tCut--o ut.

2.   B e n d B ot t o m Ta b s O v e r And Onto The UnderneathD u c t S e r v i c e .

Figure 14 — Duct Connector

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CONNECTING ROOF JACK TO FURNACE

The inner flue pipe must be present.

It is mandatory that the combustion air pipe and flue

pipe assembly be fully engaged. The combustion airpipe MUST be securely fastened to the furnace withsheet metal screws in the holes provided.

Use 1 / 2” blunt or sharp end sheet metal screws to fastenroofjack combustion air pipe to furnacecombustionaircollar. Screw holes are provided in the pipe and collar.Excessively long screws may extend to flue pipe andpuncture it. Screws are not to exceed 1  1 / 2” in length.

NOTE

C o m b u s t i o n a i r t u b e a n d f l u e p i p e a r e p a r t o f t h e s a m e a s -s e mb l y. O n l y t h e c o mb u st i o n a i r t u be n e ed b e f a s te n ed t o

the furnace.

1 . C he ck t o b e c e rt ai n t h at t he f lu e p ip e a n d c o mb us ti on a irt u b e a r e p r e s e n t .

2 . P u ll t h e t e le sc op in g f l u e t u be a nd c om bu st i on a ir t ub ea s se m bl y d o wn f r o m t h e r o of j a ck . S l id e t h e f l ue t u b e/    c o m b u s t i o n a i r t u b e a s s e m b l y d o w n f i r m l y o v e r t h e f u r -n a ce f l u e o u t l e t a n d c o mb u st i o n a i r c o ll a r. I n s ur e t h a tt h e b a c k , s i d e a n d f r o n t o f c o mb u st i o n a i r t u b e c o ll a r i sf u l ly e n ga g ed a n d i s i n c o n t a ct w i t h g a s ke t . F a s te n t h ec om bu st i on a ir t u be t o t h e f u rn ac e c om bu st i on a ir c ol la ru s i n g t w o ( 2 )   1  /  2 i n ch s h ee t m e t al s c r ew s . ( S c re w h o le sa r e p r ov i de d i n c o mb u st i o n a i r t u be a n d f u r n a ce c o m-

b u st i o n a i r c o ll a r. ( S e e F i g u r e 1 5 .)

It is mandatory that the combustion air and flue tubeassembly be fully engaged at back sides and front,and combustion air tube securely fastened to the fur-nace with sheet metal screws (2) in the screw holesprovided.

COMBUSTION

  AIR TUBE

FLUEPIPE

SCREWHOLES (2)

COMBUSTION

  AIR TUBE COLLAR

# 8 O R # 1 0SCREWS RECOMMENDED

FURNACEFLUE OUTLET

SECURESTRAPT O W A L L

F R O N T O F F U R N A C E

Figure 15 — Connecting Roof Jack to Furnace

GASKET

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IMPORTANT

 VENT SYSTEM INSTALLATION INSTRUCTIONS

FAILURE TO FOLLOW ALL VENTING INSTRUCT--

IONS CAN RESULT IN FIRE, ASPHYXIATION, OREXPLOSION.

T he v en t s ys t em i s a n i m p or t an t p ar t o f y ou r f u rn ac e i ns t al la -t i o n. C a r ef u ll y r e ad a n d o b se r v e t h e f o l lo w in g b a si c i n st r u c-t i o ns , a s w e l l a s t h o s e p a c k ed w i t h t h e v e nt s y s te m .

EXISTING FURNACE REPLACEMENT

I F T H IS F U RN A CE R EP LA C ES A N EXISTING FURNACE,D O T H E F O L L O W I N G .

1. I f a 2nd r o o f , r o o f c a p o r a d d i t i o n h a s b e e n m a d e t o t h ee xi st i ng r oo f o f t h e h om e, remove the old vent systemcompletely!... to avoid the possibility of an improp-erly installed pipe or gaps in the old vent system,INSTALL A NEW VENT SYSTEM. Your ceiling androof height will determine the correct vent systemto use. Refer to the vent selection table, of the fur-nace installation instructions.

2 . A f te r u n p ac ki ng t h e v e nt s ys t em , c h e ck t h e r a in c ap s.

I n s ur e t h e y a r e n o t d a ma g ed , t i l te d o r c r o ok e d. Do nottwist, crush or sit on the roof caps during installa-tion.   D a m ag e d r o o f c a ps w i ll c a us e i m pr o pe r f u r na c eo p er a t io n . T h e f u r na c e w i l l n o t h e at p r op e rl y a n d c o u l dresult in explosion.

3 . B e fo re i ns er t in g t h e v e n t p i pe i nt o t h e f u rn ac e t o p , i n -s p ec t t h e f u r na c e f l u e a n d c o m b us t i on a i r o p en i ng f o rd e br i s o r i n su l at i o n w h ic h m i gh t h a ve f a l le n i n d u ri n gpre--installation steps. Do not proceed unless all debrish a ve b e en c l ea n ed o u t o r r e mo v ed .

4 . A f t e r i n st a l li n g v en t p i p e o n f u r na c e t o p c ol l ar , c h ec k t om a k e s u r e t h e r e i s n o g a p i n b a c k o r s i d e b e t w e e n t h e

p i pe c o ll a r a n d t h e f u r na c e c a s i ng t o p .5 . U s e o n l y t h e p ip es p ro vi de d w it h t h e r oo f j ac k a ss em bl y.

D o n o t a d d t o o r a d a p t o t h e r s h e e t m e t a l p i p e s .  Do notcut, insert or add other pipes to this assembly.

6 . I n n o c a s e s ho ul d t h er e b e a g ap b e t we en s ec t io ns o f  t h e f l u e p i p e o r t h e c o m b u s t i o n a i r p i p e . I f n e c e s s a r y t oprevent excessive air leakage, the installer should seal

 joints in the combustion air tube with aluminum type orother suitable sealant.

NEW HOME INSTALLATIONI F T H I S F U R N A C E I S I N S T A L L E D O N A  NEW HOME   DOT H E F O L LO W I N G

1 . I n s pe c t t h e f u r na c e t o p c o ll a rs f o r s i g n s o f i n su l at i o n oc e il i ng d e br i s w h ic h m i gh t h a ve f a l le n i n d u ri n g c u t t i ngo f t h e c e i l in g a n d r o o f h o le s . R e mo v e a l l d e br i s b e f o r econtinuing.

2 . A f te r u n p ac ki ng t h e v e nt s ys t em , c h e ck t h e r a in c ap sI n s u r e t h e y a r e n o t d a m a g e d , t i l t e d o r c r o o k e d . Do nottwist, crush or sit on the roof caps during installa-tion.   D a m ag e d r o of c a ps w i ll c a us e i m pr o pe r f u r na c e

o p er a t io n . T h e f u r na c e w i l l n o t h e at p r op e rl y a n d c o u l dresult in explosion.

3 . B ef o re i ns er t in g t h e v e n t p i pe i nt o t h e f u rn ac e t o p , i ns p ec t t h e f u r na c e f l u e a n d c o m b us t i on a i r o p en i ng f od e br i s o r i n su l at i o n w h ic h m i gh t h a ve f a l le n i n d u ri n gpre--installation steps. Do not proceed unless all debrish a ve b e en c l ea n ed o u t o r r e mo v ed .

4 . A f t er i n s t a ll i ng v e n t p i p e o n f u r na c e t o p c ol l ar , c h ec k t om a k e s u r e t h e r e i s n o g a p i n b a c k o r s i d e b e t w e e n t h ep i pe c o ll a r a n d t h e f u r na c e c a s in g t o p . I f n e ce s sa r y t oprevent excessive air leakage, the installer should sea

 joints in the combustion air tube with aluminum type o

other suitable sealant.INSTALLATION IN SNOW REGIONS

W he n t h e c om bu st i on a ir p ip e i nl et i s c ov er ed o r b lo ck edw i t h s n o w, t h e f u r n a ce w i ll n o t o p e r at e p r op e rl y d u e t o t h edepleted combustion air supply.

T h er e fo re , i f t h e f u rn ac e w il l b e l oc at e d i n r e gi on s w he res no w a cc um ul at i on o n t h e r o of e xc ee ds 7 ” o r i n H . U. DS no w L oa d Z o ne s, a # 7 68 0B 6 54 1 r o of j ac k e xt e ns io n i srecommended.

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ELECTRICAL WIRING

TO INSTALLER: INCOMING POWER MUST BE PO-

LARIZED. OBSERVE COLOR CODING.

DANGER

-- SHOCK HAZARD --

DISCONNECT ELECTRICAL POWER SUPPLY TO THEUNIT BEFORE SERVICING TO AVOID THE POSSIBIL-

ITY OF SHOCK INJURY OR DAMAGE TO THE EQUIP-MENT.

CONNECT POWER SUPPLY WIRES

a . R em ov e t h e f i el d w i ri ng c o v er.

b . I n s er t 11 5 v o lt w i r e s t hr o ug h t h e l ar g e p la s t ic b u sh -i n g o n t h e l e f t s i d e o f t h e f u r n a c e ( S e e F i g u r e 1 6 ) .I f c on du it i s u se d i t s ho ul d b e s ec ur e d t o th e c on t ro lbox.

c . C on ne ct t he “ ho t” w ir e t o t he B LA CK p ig ta il l ea d,a nd t h e “ n e ut r al ” w ir e t o t h e W HI T E p ig t ai l l ea d. S e -c ur e a ll c on ne ct i on s w it h s ui t ab le w ir e n ut s a ndwrap with electrical tape.

d . C o nn e ct t h e “ g r o un d ” w i re t o t h e g r o u n di n g s cr e w.

e . R ei ns t al l t h e c on t ro l p an el c ov er a nd s ec ur e m ou nt -ing screw.

CONNECT THERMOSTAT WIRES

a . I n se rt 2 4 v o lt w ir e s t h r ou gh t he s ma ll p la st i c b us h-i n g j u s t a b ov e t h e c o nt r o l p a n e l.

b . C on ne ct t he t he rm os ta t w ir es t o t he f ur na ce l owvoltage pigtails (See Figure16).

c . C o nn e ct l o w -- v o l t ag e c i r cu i t t o t h e w a ll t h e r m os t a tpigtails.

 A separate 120 V.A.C. supply circuit must be used for thef u rn ac e. T h e c ir c ui t s ho ul d b e p ro t ec t ed b y a 1 5 a mp f u se ocircuit breaker.

Figure 16

This screw does notneed to be removed inorder to remove thefield wiring cover. (justloosen).

NOTE:Cover shouldn o t b e r e mo v edexcept whenservicing thecontrols.

WALL THERMOSTAT

 Avoid locations where the thermostat could be subject tod r af t s f r o m o u t s i de , o r e x po s ed t o d i re c t l i gh t f r o m l a m p s,s u n, f i r ep l ac e s, e t c ., o r a f f e c te d b y a i r f r o m a d u ct r e gi s t erb l ow i ng d i r ec t l y o n t h e t h e rm o st a t .

T h e w a ll t he r mo st at s ho ul d b e l oc at e d 5 2 t o 6 6 i nc he s a bo vet h e f l o or . T h e p r ef e r r ed l o ca t io n i s o n a n i n si d e w a ll s i t ua t edi n a n a r e a w i t h g o od a i r c i r cu l at i o n, a n d w h er e t h e t e m pe r at u r e w i ll b e r e as o na b ly r e pr e s en t a ti v e o f o t he r l i vi n g a r ea sthe thermostat is controlling.

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THERMOSTAT WIRING FOR DGAT AND DGAM SERIES

Figure17 -- Thermostat Wiring

    W    h    i    t   e

    G   r   e   e   n

    B    l   a   c    k

    R   e    d

Blend AirControl Box

CondensingUnit

Wall ThermostatFurnace Control Box

Not Factory Installed

White

Green

Black

Red

 Yellow

White

G r e e n

Red

 Yellow

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THERMOSTAT WIRING FOR DLAS (HEAT ONLY) SERIES

Wall Thermostat(Rear View)

Furnace Control Box

Figure17a -- Thermostat Wiring for DLAS Series

R

W

White

Green

Black

Red

 Yellow

White

Red

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WIRING DIAGRAMS

Figure 18 -- DGAT Series Wiring Diagram

W

G

RH

 Y

WallThermostat

1 2 3 4 5 6 7 8 9

UpperLimit Switch

LowerLimitSwitch

CentrifugalSwitch

CombustionBlowerMotor1

2

3

4

5

6

H o t S u r f a c eIgnitor

GasValve

1

2

3

4

5

67

8

9

BlowerMotor

SystemSwitch

To E a r th G r o u nd

Neutral

L1

115VAC{

To A/CCondensingUnit (If equipped)

Incoming Power MustBe Polarized. ObserveColor Coding

    N    E    U    T    R    A    L    S

GroundScrew

    H    E    A    T

    C    O    O    L

    L    1

    X    F    M    R

COM

24VAC

RED

BLK  

BRN

WHT

WHT

BLK  

BLU

RED    L    O    A    D

    L    I    N    E

WHT

WHT

BLK  

    S   e

   n   s   o   r    R   o    d

BLK  

BRN

BRN

BLK  

BLU

BLU

GRN

ORG

BLU

GRY

W

G

R

 Y

C

    B    L    K

    B    L    K

    B    L    K

    G    R    N

    W    H    T

    R    E    D

 YEL

BLK  GRN

WHT

Transformer

 YEL

RED    W    H    T

2

1

Blend AirControl Box

(If equipped)

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WIRING DIAGRAMS

Figure 19 -- DGAM Series Wiring Diagram

Blend AirControl Box

(If equipped)

G

RH

 Y

WallThermostat

1 2 3   4   5   6 7   8 9

UpperLimitSwitch

LowerLimitSwitch

CentrifugalSwitch

CombustionBlowerMotor

1

2

3

4

5

6

H o t S u r f a c eIgnitor

GasValve

1

2

3

4

5

67

8

9

BlowerMotor

SystemSwitch

To Earth Ground

Neutral

L1

115VAC{

To A/CCondensingU ni t ( If  equipped)

Incoming Power MustBe Polarized. O bserveColor Coding

    N    E    U    T    R    A    L    S

GroundScrew

    H    E    A    T

    C    O    O    L

    L    1

    X    F    M    R

COM

24VAC

RED

BLK  

WHT

WHT

BLK  

BLU

RED    L    O    A    D

    L    I    N    E

WHT

WHT

BLK  

    S   e

   n   s   o   r    R   o    d

BLK  

BRN

BRN

BLU

BLU

GRN

ORG

BLU

GRY

W

G

R

 Y

C

    B    L    K

    B    L    K

    B    L    K

    G    R    N

    W    H    T

    R    E    D

 YEL

BLK  

GRN

WHT

Transformer

 YEL

RED    W    H    T

2

1

WHT

BLK  

RED

W

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GAS PIPING

INSTALLATION AND CHECKING OF GAS LINE

G a s S up pl y p ip in g m us t b e s iz ed i n a cc or da nc e w it h t h e r e c -ommendations contained in “American National StandardInstitute Installation of Gas Piping” ANSI 223.1 unless localcodes or regulations state otherwise.

M a t e r i a l s u s e d a n d p i p e s i z i n g f o r U . S . m o b i l e h o m e s m u s tc om pl y w it h r e qu ir e me nt s c on t ai ne d i n M ob il e H om es

 A119.1, Recreational Vehicles A119.2 and H.U.D. Title 24,S e ct i o n 2 8 0 . 70 5 a n d a n y l o ca l o r s t a te c o de s .

NOTE

The gas line inlet on the gas valve is   1 /  2 --14 N.P.T. The gas line may be installed through the furnace floor or furnace side to the gas valve.

To install gaslineand to connect itto thegas valve,caremust be taken to hold gas valve firmly to prevent mis-alignment of the burner orifice, or to damage gas valvewhich could result in improper heating, explosion, fireor asphyxiation.

DO NOT USE EXCESSIVE PIPE SEALANT ON PIPEJOINTS. Pipe sealant, metal chips or other foreign ma-terial that could be deposited in the inlet of the gasvalve, when gas pipe is installed or carried through thegas piping into the gas valve inlet after installation, maycause the gas valve to malfunction and could result inpossible improper heating, explosion, fire or asphyxi-ation. Also, pipe sealant must be resistant to Propanegas.

Where regulations require, a main shut--off valve shallbe installed externally of furnace casing. After pipinghas been installed, turn gas on and check all connec-tions with a leak detector or soap solution.NEVER USE OPEN FLAME. FIRE OR EXPLOSIONCOULD OCCUR.

Do not test the fuel system at more than 14” W.C. afterfurnace has been connected to fuel line. Such testingcould void the warranty. Any test run above 14” W.C.may damage furnace control valve which could causean explosion, fire or asphyxiation.

 A dirt leg may be required by some local codes to trap mois-ture and contaminations.

F or N AT. g as o pe r at i on , t h e f ur n ac e i s d es ig ne d f o r 7 ” W. C .i n le t g a s p r es s ur e . P r e ss u r e t o m a in b u r ne r i s t h e n r e du c edto 3   1  /  2” W . C .

F o r P r o pa n e g a s o p er a t io n , t h e f u r n a ce i s d e si g ne d f o r 11 ”W. C . i n l et g as p re ss ur e. P r es su re t o m ai n b u r ne r i s t h enr e du c ed t o 1 0 ” W .C .

W he n c on ve rt i ng v al ve f r om o r t o P r op an e g as , i t w il l b e n ece s sa r y t o c h an g e m a i n b u rn e r o r i f i ce t o p r ev e nt a n u n d e rf i r ed o r o v er f i r ed c o nd i ti o n. S e e f u r na c e n a me p la t e f o r c o mplete instructions.

If the gas input to the furnace is too great becauseof excessive gas pressure, wrong size orificehigh altitude, etc., the burner flame will be sooty

and may produce carbon monoxide, which couldresult in unsafe operation, explosion, and/or fireor asphyxiation.

Observing Burner Operation

1 . O b se rv e b u r ne r t o m ak e s u r e i t i gn it e s. O b se r ve c o l oo f f l am e. O n n at u ra l g as t h e f l am e w il l b ur n b lu e w it h a pp r ec i ab l y y e l l ow t i p s. O n P r o pa n e g a s a y e ll o w f l a m em a y b e e x p e c t e d . I f f l a m e i s n o t t h e p r o p e r c o l o r c a l l aqualified serviceman for service.

2 . L et f u rn ac e h e at u nt i l b lo we r c y cl es o n.

3 . Tu rn t h er m os t at d o wn .

4 . O b se rv e b ur ne r t o m a ke s u re i t s h u ts o f f .

5 . L et t h e f u r na ce c o o l a nd b l ow er c y c le o f f .

Should overheating occur, or the gas supply fail toshut off, shut off the manual gas valve to the fur-nace and allow burner to run until furnace coolsdown and blower shuts off before shutting off theelectrical supply.

I f a n y a b no r m al i t ie s a r e o b se r ve d w h en c h ec k i ng f o r c o rr e co pe r at i on , s uc h a s b ur ne r f a il in g t o i gn it e o r t o t u rn o ff , s oo t yf l a me , e t c ., c a ll y o ur n e ar e st a u th o ri z ed s e rv i ce t e c hn i ci a na s s ho wn i n t he S er v ic e C en t er L is t i nc lu de d i n t h e h om eo w ne r e n ve l op e w i t h t h e f u r na c e.

Combustion Air

I n o rd er f o r t h e b ur ne r f l am e t o b ur n e ff i ci en t ly, i t m us t r eceive adequate combustion air.

T h e a mo un t o f c om bu st i on a ir c an b e c ha ng ed b y o pe r at i ngt h e c o m b u s t i o n a i r a d j u s t m e n t r o d l o c a t e d b e n e a t h t h e g a sv a lv e . ( S e e F i gu r es 1 9 a n d 2 0 .)

T h e a d j us t me nt r o d i s s et a t a n “ av er ag e” p os it i on a t t h e f a ct o r y a n d m a y b e p r op e rl y s e t f o r m a ny a p pl i ca t i on s .

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H o we v er , t h e a m ou n t o f c o mb u st i on a i r r e qu i r ed w i ll v a r y d e -p e nd i ng o n a l t it u d e, a c t ua l B T U . c o n t e nt o f t h e g a s b e i n gu s ed , g a s p r e s s ur e , c o nv e r si o n t o a n ot h er g a s, a n d o t h e rvariable factors.

T h er e f or e , i t i s e s se n ti a l t h a t t h e b u r n e r f l a m e b e o b s e r ve da n d a n y n e ce s sa r y a d ju s t me n t s a r e m a de b e f or e t h e f u r -n a c e i s p u t i n t o s e r v i c e a t t h e f i n a l h o m e s i t e . A d j u s t i n g t h e

b ur n er a ir i s c on si de re d p ar t o f t h e n or m al h om e s et -- u p p ro -c e du r e a n d i s t h e r e s p on s ib i li t y o f e i th e r t h e h o m e s e ll e r o rb u ye r, d e pe n di n g o n t h e ir a g re e me n t. A d ju s t me n t s o f t h i st y p e a r e n o t c o ve r ed b y t h e w a rr a nt y.

Combustion air adjustments must be made onlyby a qualified technician. Improper air adjustmentmay cause unsafe operation, explosion or as-phyxiation.

To adjust the combustion air:

1 . To l i g h t a n d o p er a t e f u r na c e s e e l a be l i n s id e l o w er f u rnace door.

2 . A ll ow t h e b ur ne r t o b u rn f o r a b ou t 1 M I N UT E .

3 . L o ok t h r o u gh t h e o b s e rv a t io n w i n do w a n d o b s er v e t h ea p pe a ra n ce o f t h e f l a me .

4 . O n n at ur al g as , t he b as e o f t he f la me s ho ul d b e b lu e b ut h e t i p s o f t h e f l a m e w i l l b e y e l l o w . ( S e e F i g u r e 2 0 . )

5 . O n P r o pa ne g a s , a l mo st a ll o f t h e f l am e w i ll b e y e ll owa l th o ug h s o me b l ue s h ou l d s t i ll b e p r es e nt a t t h e b a s eo f t h e f l am e n e x t t o t h e e n d o f t h e b u rn er. ( S ee F i gu re21.)

6 . I f t h e f l am e i s t o o y e ll ow, t h e c o mb us t io n a ir s ho ul d b ei n cr e as e d. I f t h e f l a me i s e x ce s si v el y b l ue ( n o y e ll o w)t h e c o mb u st i on a i r s h ou l d b e d e cr e as e d.

7 . To a dj us t t he c om bu st i on a ir, l oo se n t h e l o c k s c r ew h ol di ng t h e c o m bu st i on a ir r o d i n p la ce . P us h i n o n t h e r o dt o i n c r e a s e t h e c o m b u s t i o n a i r . P u l l o u t o n t h e c o m b u s -t i on a ir r o d t o d ec re as e t he c om bu st i on a ir. T ig ht e n l oc ks cr ew a f te r a dj us t me nt i s m ad e. D o n ot c om pl et e lyc lo se a ir d am pe r a t a ny t i me . C om pl et e c lo su re o f a id a mp e r t o b u rn e r w i l l r e su l t i n i m pr o pe r o p er a t io n . S e ecaution above.

V i e w o f B u r n e r T h r o ug h t h e O b s e r v a t i o n W i n d o w

Correct Amount of Primary Air

Too Little Primary AirP u s h S h u t t e r R o d I n

Too Much Primary AirP u ll S h ut t e r R o d O u t

Correct Amount of Primary Air

Too Little Primary AirP u s h S h u t t e r R o d I n

Too Much Primary AirP u ll S h ut t e r R o d O u t

Figure 20 -- Natural Gas Flame Appearance

Figure 21 -- Propane Gas Flame Appearance

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If Furnace Fails to Operate Properly

1 . C he ck s et t in g o f t h er m os t at -- a nd p os it i on o f H E AT /    C O O L s w it c h i f a i r c o nd i ti o ni n g i s i n st a l le d . I f a s e t -- b a c kt y p e t h e rm o st a t i s e m pl o ye d b e s u r e t h a t t h e t h er m o st a ti s i n t h e c o r re c t o p er a t in g m o de .

2 . C he ck t o s ee t h a t e l ec t ri ca l p o we r i s O N .

3 . C he ck t o s e e t h at t he k no b o n t h e g a s c o nt ro l v a lv e i si n t h e f u l l O N p o s i t i o n .

4 . M ak e s ur e f il te rs a re c le an , r et ur n g ri ll es a re n ot o bs t r uc t e d, a n d s u pp l y r e gi s t er s a r e o p en .

5 . B e s ur e t ha t f ur na ce f lue p ip in g i s o pen a nd un obstructed.

If the cause for the failure to operate is not obvious, donot attempt to service the furnace yourself. Call a qualified service agency or your gas supplier.

FINAL PROCEDURE

Install Furnace Doors

I n st a ll t h e b ot t om d oo r f i rs t b y h ol di ng t he d oo r f l us ha ga in st t h e c as in g a nd s li di ng t h e d oo r d ow n u nt i l t h ed oo r t o p a nd b ot t om f l an ge s r es t i n t h e c as in g c ha nn el s.T h e n i n s t al l t h e u p p e r d o o r i n t h e s a m e m a nn e r.

Finish and Trim

 Alcove and Closet Installations may now be fin-i s h ed a n d t r im me d a s n e c es s a ry.

L e av e e n ou g h g a p a b o v e u p p e r f u r n ac e d o o r t o a l lo w i tt o b e l i f t e d a n d r e m o v e d .

NOTESee nameplate for conversion and lighting instructions. Ob-tain a temperature rise within the ranges specified on the name plate.

SUPPLY DUCTOPENING

FurnaceBase

Figure 22 -- Anti--Backflow Damper

D u c t C o n n e c to r

 AutomaticDamper

 Note: For best air delivery install damper with blades parallel to supply duct.

Furnace and Air Conditioner Installations

I n a n a ir c on di t io ne r i s i ns t al le d w hi ch d oe s n ot u se t h eb l ow e r f o r a i r d i st r i bu t i on a n d o p er a t es c o mp l et e l y i n de p end en t o f t h e f u rn ac e, t h e t h er mo st a t s ys t em m us t h av e a ni nt e rl oc k t o p re ve nt t h e f u rn ac e a nd a ir c on di t io ne r f o rmo p er a t in g a t t h e s a m e t i m e . T h i s i n t er l oc k s y st e m u s u a ll yc o nt a i ns a h e at -- c o o l s w i t c h w h ic h m u st b e t u r ne d t o e i t heH E AT o r C O O L t o a c t iv a t e e i t h er h e at i n g o r c o ol i ng o p er at i o n, o r a p o si t i ve O F F s w it c h o n t h e c o ol i ng t h er m o st a t .

W he n u se d i n c on ne ct i on w it h a c oo li ng u ni t t h e f u rn ac es ha ll b e i ns t al le d p ar a ll el w it h o r o n t h e up st r ea m s id e o f t h ec o ol i ng u n it t o a v oi d c o nd e ns a t io n i n t h e h e at e x ch a ng e r.

F o r i n st a ll a t io n s w i t h a p a r al l el f l o w a r r a n ge m en t , t h e f u rn ac e m us t b e e qu ip pe d w it h a d am pe r t o p r ev en t c ol d a if r o m b e in g d i sc h ar g ed u p ar o un d t h e he a t e x ch a ng e r. C o lda ir c au se s c on de ns at i on i ns id e t h e e xc ha ng er a nd c anc a u s e i t t o r u s t o u t w h i c h c a n a l l o w p r o d u c t s o f c o m b u s t i o nt o b e c ir c ul at e d i nt o t h e l iv in g a r ea b y t h e f ur n ac e b lo wer es ul t in g i n p os si bl e a sp hy xi at i on . A n a ir f l ow a ct i va t eda u t om a t ic d a mp e r, P / N 7 9 00 -- 6 7 7 1, i s a v ai l ab l e f r o m f u rnace manufacturer.

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    H    I    G    H    A    L    T    I    T    U    D    E    D    E    R    A

    T    I    O    N    C    H    A    R    T  —

    D    G    A    M

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    T ,    D    L    A    S    S   e   r    i   e   s

    N    A    T    U    R    A    L    G    A    S

    5    6

 ,    0    0    0  —    I   n   p   u    t

    7    0

 ,    0    0    0

  —    I   n   p   u    t

    7    5 ,    0

    0    0  —

    I   n   p   u    t

    9    0

 ,    0    0    0  —

    I   n   p   u    t

    E    l   e   v   a    t    i   o   n

    O   r    i    f    i   c   e

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     0 .     1

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     2     9

     9     9     5     1  -  -     1     3     6     1

     0 .     1

     5     4

     2     3

     9     9     5     1  -  -     1     5     4     1

     0 .     1

     6     1

     2     0

     9     9     5     1  -  -     1     6     1     1

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     8

     1     5

     9     9     5     1  -  -     1     8     0     1

    2 ,    0

    0    0

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     3     6

     2     9

     9     9     5     1  -  -     1     3     6     1

     0 .     1

     4     9

     2     5

     9     9     5     1  -  -     1     4     9     1

     0 .     1

     5     7

     2     2

     9     9     5     1  -  -     1     5     7     1

     0 .     1

     7     7

     1     6

     9     9     5     1  -  -     1     7     7     1

    3 ,    0

    0    0

     0 .     1

     2     8

     3     0

     9     9     5     1  -  -     1     2     8     1

     0 .     1

     4     9

     2     5

     9     9     5     1  -  -     1     4     9     1

     0 .     1

     5     7

     2     2

     9     9     5     1  -  -     1     5     7     1

     0 .     1

     7     3

     1     7

     9     9     5     1  -  -     1     7     3     1

    4 ,    0

    0    0

     0 .     1

     2     8

     3     0

     9     9     5     1  -  -     1     2     8     1

     0 .     1

     4     7

     2     6

     9     9     5     1  -  -     1     4     7     1

     0 .     1

     5     4

     2     3

     9     9     5     1  -  -     1     5     4     1

     0 .     1

     7     3

     1     7

     9     9     5     1  -  -     1     7     3     1

    5 ,    0

    0    0

     0 .     1

     2     8

     3     0

     9     9     5     1  -  -     1     2     8     1

     0 .     1

     4     4

     2     7

     9     9     5     1  -  -     1     4     4     1

     0 .     1

     5     2

     2     4

     9     9     5     1  -  -     1     5     2     1

     0 .     1

     6     9

     1     8

     9     9     5     1  -  -     1     6     9     1

    6 ,    0

    0    0

     0 .     1

     2     8

     3     0

     9     9     5     1  -  -     1     2     8     1

     0 .     1

     4     4

     2     7

     9     9     5     1  -  -     1     4     4     1

     0 .     1

     4     9

     2     5

     9     9     5     1  -  -     1     4     9     1

     0 .     1

     6     6

     1     9

     9     9     5     1  -  -     1     6     6     1

    7 ,    0

    0    0

     0 .     1

     2

     3     1

     9     9     5     1  -  -     1     2     0     1

     0 .     1

     4

     2     8

     9     9     5     1  -  -     1     4     0     1

     0 .     1

     4     7

     2     6

     9     9     5     1  -  -     1     4     7     1

     0 .     1

     6     1

     2     0

     9     9     5     1  -  -     1     6     1     1

    8 ,    0

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     2

     3     1

     9     9     5     1  -  -     1     2     0     1

     0 .     1

     3     6

     2     9

     9     9     5     1  -  -     1     3     6     1

     0 .     1

     4     4

     2     7

     9     9     5     1  -  -     1     4     4     1

     0 .     1

     6     1

     2     0

     9     9     5     1  -  -     1     6     1     1

    9 ,    0

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     0 .     1

     2

     3     1

     9     9     5     1  -  -     1     2     0     1

     0 .     1

     3     6

     2     9

     9     9     5     1  -  -     1     3     6     1

     0 .     1

     4

     2     8

     9     9     5     1  -  -     1     4     0     1

     0 .     1

     5     7

     2     2

     9     9     5     1  -  -     1     5     7     1

    1    0

 ,    0    0    0

     0 .     1

     1     6

     3     2

     9     9     5     1  -  -     1     1     6     1

     0 .     1

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