tekmar 337 User Manual

- Data Brochure

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Dual Zone Manager 337

D 337

06/05

1

Information

Brochure

Choose controls

to match

application

2

Application

Brochure

Design your

mechanical

applications

3

Rough-in

Rough-in

instructions

Wiring

wiring

4

Wiring

Brochure

Wiring and

installation of

specific control

5

Data

Brochure

Control settings

and sequence of

operation

6

Job

Record

Record settings &

wiring details for

future reference

Introduction

The Dual Zone Manager 337 is designed to simplify the wiring between tN4 thermostats and zone valves. The 337 has an
internal transformer that supplies power to the tekmarNet®4 (tN4) thermostats and connected zone valves. The 337 has two
tN4 buses with three zones each. The two buses allow the 337 to operate zones on two different water temperatures.

Features:

• tN4 Compatible

• Internal Transformer

• Three Powered Zone Valve Outputs on tN4 Bus A

• Three Powered Zone Valve Outputs on tN4 Bus B

• Two Powered Zone Group Pump Outputs

• Simple Wiring

• Time Delay for Thermal Motor Zone Valves

• CSA C US Certified for use in USA and Canada

tN4 C C CWWRRPmp tN4 tN4 C WRtN4 C WRRtN4 C WtN4 RCWtN4
Zn Grp B B tNt Zone A1 tNt Zone A2 tNt Zone A3 tNt Zone B1 tNt Zone B2 tNt Zone B3

1

23456789101112 13 14 15 16 20

tN4

tektra 996-02

For product literature:
www.tekmarcontrols.com

For product instructions, see brochure
Input Power: 115 V (ac) ±10% 60 Hz, 15.5 A
Relay Rating: 115 V (ac) 5 A
All Loads Using Input Power: 15 A

15 A

28 29 30

Input Power Zn Grp Zn Grp Zone A1 Zone A2 Zone A3 Zone B1 Zone B2 Zone B3

L Pmp A Pmp B

31

N

Limited power available, see wiring brochure

Dual Zone Manager 337

Meets Class B: Canadian

ICES & FCC Part 15

Power Fuse: T15 A 250 V

Zone Group Pump A
Zone Group Pump B

Made in
Canada

17 18 19

Power

Caution! Disconnect All
Power before Opening

32 33 34 35 36 37 38 39 40 41 42 43

VlvCVlvCVlvCVlvCVlvCVlv

C

21 22 23 242526 27

Zone A1
Zone A2
Zone A3
Zone B1
Zone B2
Zone B3

24 V (ac) Fuse: T2.5 A 250 V

On/Off

A1

Zone Group

A2

Pump A

A3
B1

Zone Group

B2

Pump B

B3
A1

Zone Group

A2

Pump A Delay

A3
B1

Zone Group

B2

Pump B Delay

B3

Supply /signal wires 90°C min.

H7005B

1 of 4 © 2005 D 337 - 06/05

Sequence of Operation

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24 V (ac) Powered Outputs

The 337 has an internal transformer that provides
powered outputs for up to six 24 V (ac) zone valves and
six thermostats.

The internal transformer has limited power available. Refer
to the Job Records to determine the load on the transformer.
If the load is too large for the transformer, refer to the Wiring
Brochure to add additional power to the system.

115 V (ac) Powered Outputs

The 337 has two internal relays that provide powered outputs
for two zone group pumps.

Refer to the Job Records to determine the allowable loads
for these relays.

Sequence of Operation

When a thermostat calls for heat, the Zone LED turns on
and power is supplied to the zone valve.

• If the Zone Group Pump DIP switch is set to On and the
Zone Group Pump Delay DIP switch is set to Off, the
Zone Group Pump LED and relay turn on.

• If the Zone Group Pump DIP switch is set to On and the
Zone Group Pump Delay DIP switch is set to On, the
Zone Group Pump LED and relay turn on three minutes
after the zone valve is powered.

• If the Zone Group Pump DIP switch is set to Off, the
Zone Group Pump LED and relay are not turned on.

tN4 Bus A and tN4 Bus B

The 337 provides two tN4 busses. All of the tN4 terminals
for the A zones are internally connected. All of the tN4
terminals for the B zones are internally connected. Each
bus also has its own Zone Group Pump relay.

Since there are two separate tN4 busses, the zones on bus
A can operate at a separate water temperature or at the
same water temperature as the zones on bus B.

If the zones on bus B are to operate at the same water
temperature as bus A, connect bus A and bus B together.

If the zones on bus B are to operate at a separate water
temperature than bus A, do not connect bus A and bus B
together.

Pump B Demand

To operate the Zone Group Pump B relay externally, a
powered signal must be sent to the Pmp B terminal on the

337. Refer to the Wiring Brochure for the proper wiring.

24 V (ac) R & C

tN4 Bus A

115 V (ac) L & N

Group BGroup A

tN4 C C CWWRRPmp tN4 tN4 C WRtN4 C WRRtN4 C WtN4 RCWtN4

Zn Grp B B tNt Zone A1 tNt Zone A2 tNt Zone A3 tNt Zone B1 tNt Zone B2 tNt Zone B3

1

2345678910111213141516 20

tN4

tektra 996-02

For product literature:
www.tekmarcontrols.com

For product instructions, see brochure
Input Power: 115 V (ac) ±10% 60 Hz, 15.5 A
Relay Rating: 115 V (ac) 5 A
All Loads Using Input Power: 15 A

15 A

28 29 30

Input Power Zn Grp Zn Grp Zone A1 Zone A2 Zone A3 Zone B1 Zone B2 Zone B3

L Pmp A Pmp B

N

31

Meets Class B: Canadian

Power Fuse: T15 A 250 V

Limited power available, see wiring brochure

Dual Zone Manager 337

Zone Group Pump A
Zone Group Pump B

ICES & FCC Part 15

32 33 34 35 36 37 38 39 40 41 42 43

Made in
Canada

C

17 18 19 21 22 23 24

Power

Vlv

Zone A1
Zone A2
Zone A3
Zone B1
Zone B2
Zone B3

Caution! Disconnect All
Power before Opening

Vlv

C

Vlv

C

24 V (ac) Fuse: T2.5 A 250 V

Zone Group

Pump A

Zone Group

Pump B

Zone Group

Pump A Delay

Zone Group

Pump B Delay

Supply /signal wires 90°C min.

Vlv

C

Vlv

C

26 27

25

On/Off

A1
A2
A3
B1
B2
B3
A1
A2
A3
B1
B2
B3

Vlv

C

Group A Group B

H7005B

© 2005 D 337 - 06/05 2 of 4