tekmar 326 User Manual

- Data Brochure

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Zone Expansion Module 326

D 326

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 Zone Expansion Manager 326 is designed to simplify the wiring between tN4 thermostats and zone pumps. The 326
supplies power to the tekmarNet®4 (tN4) thermostats and connected zone pumps.

Features:

• tN4 Compatible

• Three Powered Thermostat Connections

• Three Powered Zone Pump Outputs

• Powered Zone Group Pump Output

• Simple Wiring

• CSA C US Certified for use in USA and Canada

CCWWRRtN4 tN4 C WRtN4

tNt Zone C1 tNt Zone C2 tNt Zone C3

51 52 53 54 55 56 57 58 59 60 61 62

Limited power available, see wiring brochure

Zone Expansion Module 326

Power

Zone Group Pump C

On/Off

C1

Zone Group

C2

Pump C

C3

Meets Class B: Canadian
ICES & FCC Part 15
Made in Canada

Zone C1
Zone C2

Zone C3

65 66 67 68

Zone C1 Zone C2

Pump Pump

NN

69 70

Zone C3

Pump N

N

71 72

Zone Group

Pmp C

C tN4

Zn Grp C

63

64

tN4

tektra 999-01

Relay Rating: 115 V (ac) 5 A

10 A (max)

H7002B

1 of 4 © 2005 D 326 - 06/05

Sequence of Operation

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24 V (ac) Powered Outputs

The 326 provides powered outputs for up to three 24 V (ac)
thermostats.

The 326 has limited power available. Refer to the Job
Records to determine the allowable load. If the load is too
large, refer to the Wiring Brochure to add additional power
to the system.

115 V (ac) Powered Outputs

The 326 has an internal relay that provides a powered
output for a zone group pump.

Refer to the Job Records to determine the allowable loads
for this relay.

Sequence of Operation

When a thermostat calls for heat, the Zone LED turns on
and the Zone relay is turned on.

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

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

CCWWRRtN4 tN4 C WRtN4

tNt Zone C1 tNt Zone C2 tNt Zone C3

51 52 53 54 55 56 57 58 59 60 61 62

Limited power available, see wiring brochure

Zone Expansion Module 326

Power

Zone Group Pump C

On/Off

C1

Zone Group

C2

Pump C

C3

Meets Class B: Canadian
ICES & FCC Part 15
Made in Canada

Zone C1
Zone C2

Zone C3

65 66 67 68

Zone C1 Zone C2

NN

Pump Pump

69 70

Zone C3

Pump N

N

71 72

Zone Group

Pmp C

C tN4

Zn Grp C

63

tN4

tektra 999-01

Relay Rating: 115 V (ac) 5 A

10 A (max)

H7002B

24 V (ac) R & C

64

115 V (ac) L & N

© 2005 D 326 - 06/05 2 of 4