MTAHeat Interface Unit

MODELS

HEATING UP TO(kW)

INDIRECT

38

DIRECT

DHW UP TO(kW)

83

BESARegistered

5yrWarranty*

*subject to Terms & Conditions

MTAThe MTA Heat Interface Unit is designed to work with a centralised boiler plant and district heating schemes, with 7 models ranging from indirect, direct, DHW and heating only modules. The MTA has ultra-compact dimensions with heating loads up to 38kW and DHW loads up to 83kW.

I N T R O D U C T I O N

KIWAApproved

WRASApproved

First fix manifold kit

Indirect inner components

Foam insulation

2

key featuresUltra-compact dimensions

Integral differential pressure control valve

First fix kit with integral isolation & drain valves

Heating return temperature control option

Programmable heating delta T

Bottom connections with optional top

entry kit

Primary modulating control valve

Integral fill device

Keep warm function

Secondary A rated pump

Digital touch control programmer

Range of heat meter options

Front servicing - easy access to components

5 year warranty*

warranty

D I M E N S I O N S & C O M P O N E N T S

dimensions

components

Control Box

Automatic Air Vent

Heat Exchanger, Heating

Modulating Valve

Differential Pressure Sensor

Pressure Sensor

Heat Exchanger, Domestic Water

Heat Meter Sensor

Heat Meter

District Inlet Sensor

District Filter

District Return Sensor

Heating Flow Sensor

Heating Pressure Gauge

Filling Device

3-bar Pressure Relief Valve

Domestic Cold Water Sensor

Domestic Hot Water Sensor

Heating Return Sensor

Hot Water Flow Switch

Pump

Heating Regulation Valve

Hot Water Regulation Valve

Expansion Tank

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

District Inlet

District Return

Heating Flow

Heating Return

Hot Water Outlet

Cold Water Inlet

Cold Water Outlet

Pressure Relief Valve Drain

A

B

C

D

E

F

G

H

MTA Instructions

6

3.2 Components

1 Control Box 13 Heating Flow Sensor 2 Automatic Air Vent 14 Heating Pressure Gauge 3 Heat Exchanger, Heating 15 Filling Device 4 Modulating Valve 16 3-bar Pressure Relief Valve 5 Differential Pressure Sensor 17 Domestic Cold Water Sensor 6 Pressure Sensor 18 Domestic Hot Water Sensor 7 Heat Exchanger, Domestic Water 19 Heating Return Sensor 8 Heat Meter Sensor (HM version only) 20 Hot Water Flow Switch 9 Heat Meter (HM version only) 21 Pump 10 District Inlet Sensor 22 Heating Regulation Valve 11 District Filter 23 Hot Water Regulation Valve 12 District Return Sensor 24 Expansion Tank

A District Inlet E Hot Water Outlet B District Return F Cold Water Inlet C Heating Flow G Cold Water Outlet D Heating Return H Pressure Relief Valve Drain

1

2

3

4

5

6

7

8

9

10

11

12

13

14

24

23

22

21

20

19

18

17

16

15

A B C D E F G H

UNDERSIDE VIEW

FRONT VIEW SIDE VIEW

446

391

335279

224

168

113

57

600

500 262

21

3

A B C D E F G H

T E C H N I C A L D ATA

technical data

Maximum Pressure - District

Maximum Pressure – Heating

Maximum Pressure - ColdFeed / Domestic Hot water

Maximum Pressure Differential

Maximum District Temperature

Maximum District Flow Rate (for ∆p 80kPa dhw)

Maximum District Flow Rate (for ∆p 50kPa dhw)

Minimum Hot Water Flow Rate

Weight Empty - HIU + Backplate

Dimensions HxWxD

Electrical supply (AC)

Power consumption

INDIRECT HEATING & DHWMODEL

TWIN 24-14 TWIN 24-40HEATING ONLY

102.9103

85---

22+4600x500x262

230/50Hz85

40-00HOT WATER ONLY

00-14 00-40

10-

103

8519151.9

17+4600x500x262

230/50Hz85

10-

103

8529231.9

19+4600x500x262

230/50Hz85

DIRECT HEATING & DHWSINGLE 00-14 SINGLE 00-40

62.9103

8519151.9

19+4600x500x262

230/50Hz85

62.9103

8529231.9

21+4600x500x262

230/50Hz85

102.9103

8529231.9

24+4600x500x262

230/50Hz85

102.9103

8519151.9

22+4600x500x262

230/50Hz85

Bar

Bar

Bar

Bar

°C

L/min

L/min

L/min

kg

mm

V

W

general data

Heating temperatures - Low Mode

Heating temperatures - High Mode

Hot Water Temperature

30-4545-80

-

--

40-60

--

40-60

30-4545-8040-60

30-4545-8040-60

30-4545-8040-60

30-4545-8040-60

°C

°C

°C

temperature ranges

District - Inlet & Outlet

Heating system - Inlet & Outlet

Cold Inlet / Outlet & Hot Water Outlet

222222

22-

22

22-

22

222222

222222

222222

222222

mm

mm

mm

water connections

PRIMARYheating performance

85-70°C85-72°C85-74°C70-49°C70-51°C70-53°C60-35°C60-37°C60-40°C

Primary at 0.5 bar diff – 24 PlateSECONDARY

80-60°C80-65°C80-70°C60-40°C60-45°C60-50°C45-30°C45-35°C45-40°C

kW

25221733251725178

PRIMARY FLOW (l/min)

25.525.521.823.318.713.914.310.56.1

PRIMARY ΔP (Kpa)

5050

34.241.127.714.714.97.52.6

MAX SECONDARY FLOW (l/min)

18.521.624242424242424

RESIDUAL PUMP PRESSURE (kPa)

503220202020202020

85-70°C85-72°C85-74°C70-49°C70-51°C70-53°C60-35°C60-37°C60-40°C

Primary at 0.5 bar diff – 40 Plate

80-60°C80-65°C80-70°C60-40°C60-45°C60-50°C45-30°C45-35°C45-40°C

282419382919291910

23.523.523

23.520

15.415.711.87.1

5050

43.350

36.420.523.313.34.5

20.223.228

27.252828282828

503510121010101010

PRIMARYDHW performance

80-39°C80-32°C80-28°C70-43°C70-33°C70-30°C

Primary at 0.5 bar diff – 14 PlateSECONDARY

10-60°C10-50°C10-45°C10-60°C10-50°C10-45°C

kW

41.449.152.427.637.341.1

PRIMARY FLOW (l/min)

151515151515

PRIMARY ΔP (Kpa)

525252525252

MAX SECONDARY FLOW (l/min)

12.017.721.68.013.516.9

SECONDARY ΔP (Kpa)

50.411216522.36870

80-29°C80-22°C80-19°C70-34°C70-25°C70-22°C

Primary at 0.5 bar diff – 40 Plate

10-60°C10-50°C10-45°C10-60°C10-50°C10-45°C

79.483.2 72.957.070.872.9

232118232322

524337525249

22.930.030.016.525.530.0

49.884.484.427.363

84.4

4

MTA Instructions

7

3.3 Schematics

TWIN

models

M O D E L S & S C H E M AT I C S

schematics

Twin Plate Indirect 24-14

Twin Plate Indirect 24-40

Single Plate Direct 00-14

Single Plate Direct 00-40

Hot Water Only 00-14

Hot Water Only 00-40

Heating Only 40-00

Twin plate heat exchangers capable of up to 33kW heating load and 17.7L/min DHW demand (dependant on primary conditions)

MTA24-14ID

MTA24-40ID

MTA14D

MTA40D

MTA14DHW

MTA40DHW

MTA40HTG

DESCRIPTION CODEMODEL

twin

5

Twin plate heat exchangers capable of up to 33kW heating load and 30L/min DHW demand (dependant on primary conditions) Single DHW plate heat exchanger capable of up to 30L/min demand and a direct heating load of 33kW (dependant on primary conditions)Single DHW plate heat exchanger capable of up to 30L/min demand and a direct heating load of 38kW (dependant on primary conditions)Single plate heat exchanger capable of up to 17.7L/min DHW demand (dependant on primary conditions)

Single plate heat exchanger capable of up to 30L/min DHW demand (dependant on primary conditions)

Single plate heat exchanger capable of up to 38kW heating load (dependant on primary conditions)

S C H E M AT I C S

MTA Instructions

8

HOT WATER ONLY

HEATING ONLY

SINGLE single hot water only

heating only

MTA Instructions

8

HOT WATER ONLY

HEATING ONLY

SINGLE

6

B I L L I N G / S E R V I C E / P L A N T

7

billingModutherm would recommend contacting Insite Energy for Pay-As-You-Go (PAYG) and Credit based automated meter reading (AMR) systems. Insite Energy support successful installations on new sites and refurbishment projects, with qualified & experienced M&E trades, field IT teams & on-site project management ensuring fault free metered heat networks prior to resident occupation.

For more information, please contact:

serviceOur MTA heat interface unit has a 2 year parts and labour warranty if commissioned by Modutherm’s trained technicians. We offer extended warranties up to 5 years, providing the unit is serviced anually. For more information, please email enquiries@modutherm.co.uk.

central boiler plantAt Modutherm we can help with the selection of boiler equipment and thermal stores for your heat interface projects. For more information, please email enquiries@modutherm.co.uk.

Genesis FS range Thermal store 200-8000 litres

Emily ListerHead of Business Development07747 214 866emily.lister@insite-energy.co.uk

Modutherm Limited Unit 4 GenesisEndeavour Drive Basildon, SS14 3WF

modutherm.co.ukTel: 0345 521 5666enquiries@modutherm.co.ukA member of the Modular Heating Group. CB/0620