HoneywellTHE R841 ELECTRIC HEATING RELAY ISUSED WITH A 2-WIRE, 24V THERMOSTATTO PROVIDE CONTROL OF ELECTRICHEATING EQUIPMENT. IT IS A DIRECT-FOLLOWING RELAY WHICH OPERATESWITH EACH CYCLE OF THE THERMO-STAT (4 TO 6 CYCLES PER HOUR).

❑ R841C,D models are used to control oneload.

❑ R841E is used either with one thermostatto control two loads simultaneously, or withtwo thermostats to control two independentloads.

❑ R841C and E models include an integraltransformer; R841 D model must be poweredfrom a remote 24V transformer.

❑ R841C and D models have a 1/2 inch maleconduit bushing.

❑ The R841C ,D and E models are for instal-lation on a wireway or J-box.

❑ R841 E has a 1/2 inch male conduit bushingand includes an enclosure with a low voltagewiring compartment.

❑ Special R841E with 10 second minimumtiming between stages is available.

❑ Each relay switches up to a 5,000 watt load.

❑ Spst MICRO SWITCH snap switches areactuated by ambient-compensated bimetalstrips.

❑ Leadwires are provided for both line voltageand low voltage connections.

❑ Small size and silent operation allow instal-lation in living area, utility room, or basement,

❑ May be mounted in any convenient position.

R.E.REV. 10-79 (.11)

IMPORTANTTHE SPECIFICATIONS GIVEN IN THIS PUBLICATION DO NOT INCLUDE NORMAL MANUFACTURING TOLERANCES.THEREFORE, THIS UNIT MAY NOT MATCH THE LISTED SPECIFICATIONS EXACTLY .ALSO, THIS PRODUCT IS TESTEDAND CALIBRATED UNDER CLOSELY CONTROLLED CONDITIONS, AND SOME MINOR DIFFERENCES IN PERFOR-MANCE CAN BE EXPECTED IF THOSE CONDITIONS ARE CHANGED.

TRADELINE MODELSTRADELINE models are selected and packaged to provide ease of stocking, ease of handling, and maximum

replacement value. TRADELINE model specifications are the same as those of standard models except as notedbelow.

TRADELINE MODELS A VA ILABLE: R841D–24 Vat, 60 Hz.R841C, D, and E Electric Heating Relays. R841E–120, 208, 240, 277 Vat; 50/60 Hz.

VOLTAGE AND FREQUENCY: ADDITIONAL FEATURES: TRADELINE pack withR841C–240 Vat, 60 Hz. cross reference label and special instruction sheet.

STANDARD MODELS

MODELS: R841 Electric Heating Relay.R841 C Electric Heating Relay –with integral trans-

former, with conduit bushing; includes one spstsnap switch.

R841 D Electric Heating Relay –without transformer,with conduit bushing; includes one spst snap switch.

R841 E Electric Heating Relay–with integral trans-former, with conduit bushing; includes two spstswitches.

VOLTAGE AND FREQUENCY:R841C (with transformer)– 120, 208, or 277 Vac at

60 Hz; 240 Vac at 50/60 Hz.R841 D (without transformer)–24 Vat, 60 Hz.R841E (with transformer)–1 20, 208, 240, or 277

Vac at 50/60 Hz,SWITCH: MICRO SWITCH snap switch, bimetal oper-

ated. Makes contact about 75 seconds (cold) afterthermostat calls for heat. (Top stitch on R841 Ewith optional specification makes at about 55 seconds,bottom switch at about 75 seconds. ) Breaks contactabout 65 seconds (hot) after thermostat shuts off,

ELECTRICAL RATINGS (A per switch, 60 Hz current):

Noninductive Rating: 22 A at 120, 208 and 24(I Vac;19 A at 277 Vat.

THERMOSTAT HEAT ANTICIPATOR CURRENT:R841C,D–O.2 A.R841 E –0.4 A (one thermostat controlling both loads);

0.2 A (one thermostat controlling each load).AMBIENT TEMPERATURE RANGE: Minus 20 F to

plus 150 F [minus 29 C to 66 C].UNDERWRITERS LABORATORIES INC. LISTED

(R841C,D and E): File No. E4436, Guide XAPX.CANADIAN STANDARDS ASSOCIATION CERTI-

FIED:R841C,D–File No. LR1620 and LR1322.R841E–File No. LR1620.

(continued on page 3)

WHEN PURCHASING REPLACEMENT AND MODERNIZATION PRODUCTS FROM YOUR TRADELINEWHOLESALER OR YOUR DISTRIBUTOR, REFER TO THE TRADELINE CATALOG OR PRICE SHEETS FORCOMPLETE ORDERING NUMBER, OR SPECIFY–

1. Order number; specify TRADE LINE, 2. Voltage and frequency.if desired. 3. Optional specification, if desired.

IF YOU HAVE ADDITIONAL QUESTIONS, NEED FURTHER INFORMATION, OR WOULD LIKE TO COMMENT ON OURPRODUCTS OR SERVICES, PLEASE WRITE OR PHONE:

I. YOUR LOCAL HONEywELL Residential DIVISION SALES OFFiCE (CHECK WHITE PAGES OF PHONE DIREcToRY).

2. RESIDENTIAL DIVISION CUSTOMER SERVICEHONEYWELL INC., 1885 DOUGLAS DRIVE NORTHMl NNEAPOLIS, MINNESOTA 55422 (612) 542-7500

(IN CANADA–HONEYWELL CONTROLS LIMITED, 740 ELLESMERE ROAD, SCARBOROUGH, ONTARIO MIP 2V9)INTERNATIONAL SALES AND SERVICE OFFICES IN ALL PRINCIPAL CITIES OF THE WORLD.

2

LEADWIRE LENGTH (NOMINAL):R841C,D–

Line voltage–18 in. [457.2 mm].Low voltage–7-l/2 in. [ 190.5 mm].

R841E–Line voltage–8 in. [203.2 mm].Low voltage–4 in. [ 101.6 mm].

CASE FINISH: Zinc bichromate.CONDUIT BUSHING: R841C,D,E have a 1/2 in. [12.7

7/8 in. [22. 2 mm] knockouts in back and sides ofcase for 1/2 in. [ 12.7 mm] conduit.

DIMENSIONS: See Figs. 1 and 2.

OPTIONAL SPECIFICATIONS:1. R841C with special leadwires (277 Vat, 60 Hz

only ).2. R84 lE with 10 second minimum timing between

stages on both make and break operation. Meets EEI-mm] male conduit bushing; R841 E also has three NE-MA requirement.

—3; [98.6]

-7, ,

r

1;[37 .4]

T

~’

2; A [3821 ] A–(t-y

[60,4] *; [6.4]

I_&

; [16.0]

!__? 1, ~

“+’F

,3r-+~@0+~ II 0.41

1 1A &l 15.21

15 3 7AI MOUNTING HOLE AND TWO MOUNTING SLOTS FOR NO. 8 SCREW.-Z” “ i[12.01 [19.1] 29

~ ~4/&:C:::#fl,6USHlNG FOR l,, INCH KNOCKOUT ON BOTH F(84,C

2s2 [74’01—

3; [65.8]~ T R A N S F O R M E R NOT A P P L I C A B L E TO R841D. ,**T

FIG. 1-DIMENSIONS OF R841C,D IN in. [mm IN BRACKETS].

112[12.71.14NPSL

4:2) -=J J1~@ [101.8 I 4;

[ 122.7]

b~ “ ‘ ‘G‘v‘

+

-(4:[20.61

3; [79.41 ; [9.5]7—-

718 [22.21 DIAMETERK N O CKOUT (3)

<

[2:.2}

3; [96.4] 2; —

[63.5]

3 : [ 100 .0 ],...

FIG. 2–DIMENSIONS OF R841E IN in. [mm IN BRACKETS].

60-2004– 1

WHEN INSTALLING THIS PRODUCT . . .1. Read these instructions carefully. Failure to

follow them could damage the product or cause ahazardous condition.

2. Check the ratings given in the instructions and onthe product to make sure the product is suitable for yourapplication.

3. Installer must be a trained, experienced servicetechnician.

4. After installation is complete, check out productoperation as provided in these instructions.

I Disconnect power supply before wiring to preventelectrical shock or equipment damage. IAll wiring must comply with applicable codes and

ordinances. Be sure the power supply voltage agrees withthe rating on the relay label.

Fig. 3 shows a typical installation within a compart-ment enclosure on the end of a baseboard heater. Theback of the compartment enclosure should be equippedwith embossing to clear mounting screws.

R841C,D,E also may be mounted on a wireway(Fig. 4) or junction box.

1. Fasten relay securely to mounting surface usingthe 2 mounting holes in the backplate or the conduitbushing.

2. Disconnect the power supply.

FIG. 4–FOUR RELAYS MOUNTED ON WIREWAY.

JUNCTION BOX

n4 n n L2 ~

A

4 f?Q (;:T]~w w

RED BLACK BLUE

R841C2.WIRELOW VOLTAGETHERMOSTAT

RED n

111~ WHITE (~II uII

RESISTANCEHEATER

~ PIYUER5”PPLY. PRovlDEDl,coNNEcT ME&N, ANDovERLoAoPROTECTION AS REQUIRED. ,., !

FIG. 3–TYPICAL INSTALLATION ON BASEBOARD FIG. 5–R841C INTERNAL SCHEMATIC AND CON-HEATER. NECTION DIAGRAM FOR ONE RELAY.

fAf ~~Ll (HOT) L2 2-WIRE

R841C 24 V\ THERMOSTAT

BLUE RED

@ELEcTRIc

o

BLACK \llH EA T E RNO. 1 1e

J

RE515TANCERED HEATER

*

TRANSFORMER

r

-%

R841D RELAV

ACK RED

WHITE.

LOAD

R841D RELAY

. . . . ~ - - -

b.. W , F I .

LOW VOLTAGET H ER M O S T A T

I 2.WIRELOW VOLTAGETHERMOSTAT

m

A RED 1+ WHITE (>

LOAD2.WIRE

R841D RELAY Low VOLTAGE● T H ER M O S T A T

4 BLACK RED

A1

( )

— qED

—LOAD

, “,,0.

J’J PC3WERS”PPLY. PROVIDEA DI*CONNECTMEANS TO S, M”LTANEO”,LYDE-ENERGIZE ALL VOLTAGE SOURCES . PROVIDE OVERLOAD PROTECTIONAS REQUIRED ,

,,.,

~ POWER S”PPL”. P R O V I D E DISCONNECT MEANSANI)OVERLOAD PRO.TECTION AS REQuIRED,

,,,.

.FIG. 6–TWO OR MORE R841C RELAYS CONNECT- FIG. 8–CONNECTIONS FOR FOUR R841D RELAYSED TO ONE THERMOSTAT SO THEY OP-ERATE IN SEQUENCE ABOUT ONE MINUTEAPART. THIS REDUCES THE INITIAL LINELOAD ON LARGE KILOWATT iNSTAL-LATIONS. SET THE THERMOSTAT HEAT

AND THERMOSTATS USED WITH ONETRANSFORMER. SET EACH THERMOSTATHEAT ANTICIPATOR AT 0.2 A.

ANTICIPATOR AT 0.2A.

E

IUNCTION BOX

4~ D n L2 ~

>AO

J?%

A4 “

(H:T)~w

( z)LJREMOTE=24V~ TRANSFORMER

RED BLACKR841 D

RED nWHITE

-1+ u2.WIRE

DROPPING LOW VOLTAGERE515ToR THER MOSTAT

A POWER S”PPLY, PROVIDE D ISCONNECT MEAN, AND OVERLOAD ,,a,PROTECTION AS REQuIRED.

I J~ Pow,, 5LIW’L” PROV,CIEC)ISCONNECT MEANS AND OV,I?LCIAD

PROTECTION AS REQUIRED. ..,,

FIG. 9–CONNECTIONS FOR TWO R841D RELAYSUSED WITH ONE TRANSFORMER ANDTHERMOSTAT. SET THERMOSTAT HEATANTICIPATOR AT 0.4 A.

FIG. 7–R841D INTERNAL SCHEMATIC AND CON-NECTION DIAGRAM FOR ONE RELAY.

5 60-2004–1

Q 2-WIRE24 VTHERM05TA7

A

~6R120V —

(L3 FOR 208, 240, OR 277 V]

~ PowERs”PPLY.ADcl DISCONNECT MEAN5ANDOVERLOACI ,,0,.,TION AS REQUIRED

A 5ETAD,”sTABLEHEAT ANT!clPAToRATo.4A. ,,..

2.WIRE 2-WIRE24 V 24 VTHERMOSTAT THERMOSTATNO 1 NO. 2

@@

I !iJ-L$LRED

%R120V -

(L3 FOR 208,240, OR 2?7 V)

~ POWER SUPPLY. ADD DISCONNECT MEANS AND OVERLOAD PRo.TECTION AS REQ U I R E D .

~ :~:DJLISTABLE HEAT AP4TICIPATOP.OF EACH T H E R M O S T A T A,,,s,

FIG. IO–TYPICAL WIRING HOOKUP FOR R841E FIG. II–TYPICAL WIRING HOOKUP FOR R841EWITH ONE THERMOSTAT OPERATING WITH TWO THERMOSTATS, EACH WITHTWO LOADS SIMULTANEOUSLY. ITS OWN LOAD.

A2.WIRE24 VTHERMOSTAT

A

R841 E

::rmJUNCTION HEATER00x

b nl n 1

MELECTRICHEATER

9 BLK/ YELL 11II

Q RED 11II

REDI YELLOW

BLUE

~ :(-n~FOR12V(L3 FOR 208, 240, OR 277 V)

~ p##&wLYPLYyxwEcT MEANS AND OV,RLAD ,.0

~ SET AOJLISTABLE HEAT ANT,CIPATIJRAT 04A ‘s”

I. 12–TYPICAL WIRING HOOKUP FOR R841E WITH ONE THERMOSTAT CONNECTED TO ONE LOAD SOTHAT BOTH SIDES OF THE SINGLE PHASE LINE ARE SWITCHED.

6

The cycling pattern of the R841 is determined by the frequency, the R841 switch contacts make approxi-thermostat(s). On a call for heat, the thermostat(s) mately 75 seconds (from cold start) after the thermostatactivates the low voltage resistance heater(s) in the calls for heat. (The top switch on the special R841 ER841. The heater(s) drives the bimetal strip(s) to actuate with optional specification is adjusted to approximatelythe spst, MICRO SWITCH snap-acting switch or switches. 55 seconds; the bottom switch to approximately 75The bimetal strip is ambient temperature compensated seconds. This allows, at the very minimum, 10 secondswithin the specified ambient range. At rated voltage and between stages in both make and break sequence.)

After mounting and wiring have been completed, turn heating equipment functions properly. Return the ther-on the power supply. Set the thermostat above room tem- mostat to the desired room temperature before leavingperature until the electric heating equipment starts. the installation.Permit the system to operate long enough to prove the

Dear Customer, Please send your commanta and suggestions to:

We welcome your comments and suggestions for improving this publi- Honaywell Inc.

cation. Your assistance is greatly appreciated and will eneble us to provide Honeywell Plaza

better tachnical information for ye”. Minneapolis, Minnesota 55408ATTN: Publications Supervisor MN 12-3247

H O N E Y W E L L MINNEAPOLIS, MN 5540S INTERNATIONAL Salas Offices in all principal cltias of tha world. Manufacturing inAustralia, Canada, Finland, France, Germeny, Japan, Mexico, Natharlands, Spain, Taiwen, United Kingdom, U.S.A.

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