tekmar 324 User Manual

- Data Brochure

tN2 Zone Expansion Module 324

D 324

03/09

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 tN2 Zone Expansion Module 324 is designed to allow 2-wire tekmarNet®2 Thermostats to connect to a tekmarNet®4
System Control such as a 420, 421, 422, 423, 274, or 275. The 324 operates up to four zone valves or zone pumps. The
324 is to be installed in an enclosure together with a tekmar Zone Manager.

Features:

Only Requires 2 Wires Per Zone

•
For use with tN2 Thermostats 527, 528, 530

•
tN4 System Control Compatible

•

Four Zone Valves or Zone Pumps

•
Time Delay for Thermal Motor Zone Valves

•
CSA C US Certified for use in USA and Canada

•

tN2 tN2 tN2

tN2 tN2

Zone 1Zone 1

5150 52

On/Off

Meets Class B: Canadian
ICES & FCC Part 15

Made in Canada

65 66

Zone Power

R / L

tN2 tN2

Zone 2

1
2
3
4
1
2
3
4

C / N

Zone 3

5453 55

Zone Group

Pump

Zone Group
Pump Delay

67 68

Zone 1

Vlv/Pmp

C / N

tN2

Zone 4

Vlv/Pmp

5756

Zone 2
Zone 3
Zone 4

69 70

Zone 2

C / N

GYRc

Zn 4 Cool Fan

58 6059

Cool & Fan Relay Rating:
24 V (ac) 2 A

Zone Expansion Module 324

PowerZone 1
tN4
Zone Group Pump
Cooling
Fan

71 72

Zone 3

Vlv/Pmp

C / N

73 74

Zone 4

Vlv/Pmp

C / N

tN4

tN4 Expansion

6261 63

1 VA Max

tektra 1028-01

Relay Rating: 115 V (ac) 5 A
Zone Power: 115 V (ac) ±10% 60 Hz, 12 A

Supply wires

75°C minimum

75 76

Zone Group

Pump

N

C

Pmp

R

tN2

5 A (max)

H7016A

64

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Sequence of Operation

()

On/Off

Zone Group
Pump Delay

Zone Group

Pump

1
2
3
4
1
2
3
4

General

The 324 can connect to four tekmarNet®2 (tN2) thermostats.
When a thermostat calls for heat, the 324 turns on the
corresponding zone output which can either provide power
to a zone pump or a zone valve. Zone 4 can be connected
to a Heat – Cool thermostat. When the thermostat is
operating the cooling system, the 324 turns on the cooling
relay. When the thermostat is operating the fan, the 324
operates the fan relay.

The 324 includes two connectors for Zone Manager wiring
plugs. The top plug provides 24 V (ac) to the 324. The
bottom plug provides 120 V (ac) power. tN4 communication
is not provided through the wiring plug. Instead, the tN4
expansion terminals allow the 324 to be wired to other
Zone Managers.

tN2 tN2 tN2

tN2 tN2

tN2 tN2

Zone 2

5150 52

On/Off

65 66

Zone Power

1
2
3
4
1
2
3
4

C / N

Zone Group

Pump

Zone Group
Pump Delay

67 68

Vlv/Pmp

Zone 3

5453 55

Zone 1

Zone 1Zone 1

Meets Class B: Canadian
ICES & FCC Part 15

Made in Canada

R / L

tN2

Zone 4

5756

Zone 2
Zone 3
Zone 4

69 70

Zone 2

Vlv/Pmp

C / N

C / N

GYRc

Cool & Fan Relay Rating:

Zn 4 Cool Fan

24 V (ac) 2 A

58 6059

Zone Expansion Module 324

PowerZone 1
tN4
Zone Group Pump
Cooling
Fan

71 72

73 74

Zone 3

Vlv/Pmp

Zone 4

Vlv/Pmp

C / N

C / N

tN464Pmp

tN4 Expansion

tektra 1028-01

Relay Rating: 115 V (ac) 5 A
Zone Power: 115 V (ac) ±10% 60 Hz, 12 A

Supply wires

75°C minimum

75 76

Zone Group

Pump

C

6261 63

1 VA Max

N

R

tN2

5 A (max)

24 V (ac) R & C

115 V (ac) L & N

H7016A

tekmarNet®2 Operation

The 324 uses tekmarNet®2 (tN2) communication to connect
to tN2 compatible thermostats. The 324 in turn translates

®

the information to tekmarNet

4 (tN4) communication. The
tN2 thermostats appear on the tN4 communication bus in
the same manner as tN4 Thermostats.

Important Note:

The 324 is NOT compatible with previous generation tN2
products such as the Remote Display Module 040 or the
Start / Stop Module 039.

tekmarNet®4 Expansion

The 324 has four wiring terminals to allow for tN4 expansion
to other tN4 devices. The tN4 expansion can be used to
connect the 324 to other Zone Managers or Zone Expansion
Modules to add extra heating zones. The tN4 expansion
can also be wired to a Mixing Expansion Module. This
option requires the use of a tN4 Outdoor Reset Control to
operate the mixed water temperature. The tN4 expansion
also allows the installation of a tN4 Timer 033, a single tN4
Thermostat, or a single tN4 Setpoint Control. The powered
zone group pump is activated by the Mixing Expansion
Module, Thermostat, or Setpoint Control whenever the
pump input (terminal 64) is powered with 24 V (ac).

DIP Switch Settings

Zone 2
Zone 3
Zone 4

Zone 2

Vlv/Pmp

C / N

GYRc

Cool & Fan Relay Rating:

Zn 4 Cool Fan

24 V (ac) 2 A

58 6059

Zone Expansion Module 324

PowerZone 1
tN4
Zone Group Pump
Cooling
Fan

71 72

73 74

Zone 3

Zone 4

Vlv/Pmp

C / N

C / N

Relay Rating: 115 V (ac) 5 A
Zone Power: 115 V (ac) ±10% 60 Hz, 12 A

Supply wires

75°C minimum

tN2

tN2 tN2

tN2 tN2 tN2

tN2 tN2

Zone 3

Zone 4

Zone 2

Zone 1Zone 1

5150 52

On/Off

Meets Class B: Canadian
ICES & FCC Part 15

Made in Canada

65 66

Zone Power

R / L

5756

5453 55

1

Zone Group

2
3

Pump
4
1
2

Zone Group

3

Pump Delay

4

67 68

69 70

Zone 1

Vlv/Pmp

Vlv/Pmp

C / N

C / N

The DIP switches are found on the left hand side of the 324.

Zone Group Pump

Each zone has a corresponding Zone Group Pump DIP
switch.

Zone Group Pump DIP switch set to On:

The Zone Group Pump turns on when the zone calls

•
for heat.

Zone Group Pump DIP switch set to Off:

The Zone Group Pump does not turn on when the zone

•
calls for heat.

© 2009 D 324 - 03/09 2 of 4

tektra 1028-01

Pump

tN464Pmp

tN4 Expansion

75 76

Zone Group

1 VA Max

N

C

R

6261 63

tN2

Zone Group Pump Delay

Each zone has a corresponding Zone Group Pump Delay
DIP switch.

Note: The Zone Group Pump Delay only operates if the

5 A (max)

H7016A

Zone Group Pump DIP switch is set to On.

Zone Group Pump Delay DIP switch set to On:

The Zone Group Pump turns on 3 minutes after the zone

•
calls for heat.

The Zone Group Pump turns off 15 seconds after the

•
zone stops calling for heat.

Zone Group Pump Delay DIP switch set to Off:

The Zone Group Pump turns on when the zone calls

•
for heat.

The Zone Group Pump turns off when the zone stops

•
calling for heat.

LED Status Indicators

Power LED

Green:

Normal operation.

•

Amber:

Power is present but the fuse for the internal 24 V (ac)

•
transformer is blown.

Off:

No power to the Power Input of the Zone Manager.

•

tN4 LED

Green:

•

The Zone Manager has established tN4 communication.

Off:

•

There is no tN4 communication.

Zone Group Pump LED

Green:

The Zone Group Pump relay is on.

•

Off:

The Zone Group Pump relay is off.

•

Cooling LED

Green:

The cooling relay is on.

•

Off:

The cooling relay is off.

•

Fan LED

Green:

The fan relay is on.

•

Off:

The fan relay is off.

•

Zone 1, 2, 3, 4 LEDs

Green:

The zone is on.

•

Off:

The zone is off.

•

Zone Expansion Module 324

Zone 2
Zone 3
Zone 4

PowerZone 1
tN4
Zone Group Pump
Cooling
Fan

Flashing LED Indicated Error Messages

When an error is present, an LED will flash. If there are multiple errors, then multiple LEDs may flash. Once the error has
been corrected, the LED will stop flashing.

Zone 1 LED Flashing Zone 3 LED Flashing

PowerZone 1
Zone 2
Zone 3
Zone 4

tN4

Zone Group Pump

Cooling

Fan

Zone 2 LED Flashing

PowerZone 1
Zone 2
Zone 3
Zone 4

tN4

Zone Group Pump

Cooling

Fan

Zone 1 has an open or short
circuit and communication
to the thermostat on zone 1
has been interrupted. Check
the wiring between the
thermostat and the 324 for
open or short circuits. If the
thermostat was intentionally
removed, power off the 324,
wait 10 seconds, and then
reapply power to the 324.

Zone 2 has an open or short
circuit and communication
to the thermostat on zone 2
has been interrupted. Check
the wiring between the
thermostat and the 324 for
open or short circuits. If the
thermostat was intentionally
removed, power off the 324,
wait 10 seconds, and then
reapply power to the 324.

PowerZone 1
Zone 2
Zone 3
Zone 4

tN4

Zone Group Pump

Cooling

Fan

Zone 4 LED Flashing

PowerZone 1
Zone 2
Zone 3
Zone 4

tN4

Zone Group Pump

Cooling

Fan

Zone 3 has an open or short
circuit and communication
to the thermostat on zone 3
has been interrupted. Check
the wiring between the
thermostat and the 324 for
open or short circuits. If the
thermostat was intentionally
removed, power off the 324,
wait 10 seconds, and then
reapply power to the 324.

Zone 4 has an open or short
circuit and communication
to the thermostat on zone 4
has been interrupted. Check
the wiring between the
thermostat and the 324 for
open or short circuits. If the
thermostat was intentionally
removed, power off the 324,
wait 10 seconds, and then
reapply power to the 324.

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Cleaning the Control

The control’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the
control. Do not use solvents or cleaning solutions.

Limited Warranty and Product Return Procedure

Limited Warranty The liability of tekmar under this

warranty is limited. The Purchaser, by taking receipt
of any tekmar product (“Product”), acknowledges the
terms of the Limited Warranty in effect at the time of
such Product sale and acknowledges that it has read
and understands same.

The tekmar Limited Warranty to the Purchaser on the
Products sold hereunder is a manufacturer’s pass­through warranty which the Purchaser is authorized to
pass through to its customers. Under the Limited War­ranty, each tekmar Product is warranted against defects
in workmanship and materials if the Product is installed
and used in compliance with tekmar’s instructions, ordi­nary wear and tear excepted. The pass-through warranty
period is for a period of twenty-four (24) months from the
production date if the Product is not installed during that
period, or twelve (12) months from the documented date
of installation if installed within twenty-four (24) months
from the production date.

The liability of tekmar under the Limited Warranty shall
be limited to, at tekmar’s sole discretion: the cost of parts
and labor provided by tekmar to repair defects in materi­als and / or workmanship of the defective product; or to the
exchange of the defective product for a warranty replace­ment product; or to the granting of credit limited to the origi­nal cost of the defective product, and such repair, exchange
or credit shall be the sole remedy available from tekmar,
and, without limiting the foregoing in any way, tekmar is
not responsible, in contract, tort or strict product liability,
for any other losses, costs, expenses, inconveniences, or
damages, whether direct, indirect, special, secondary, inci­dental or consequential, arising from ownership or use of
the product, or from defects in workmanship or materials,
including any liability for fundamental breach of contract.

Any representations or warranties about the Products made
by Purchaser to its customers which are different from or in
excess of the tekmar Limited Warranty are the Purchaser’s
sole responsibility and obligation. Purchaser shall indem­nify and hold tekmar harmless from and against any and all
claims, liabilities and damages of any kind or nature which
arise out of or are related to any such representations or
warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the
returned Product has been damaged by negligence by per­sons other than tekmar, accident, fire, Act of God, abuse or
misuse; or has been damaged by modifications, alterations
or attachments made subsequent to purchase which have
not been authorized by tekmar; or if the Product was not
installed in compliance with tekmar’s instructions and / or
the local codes and ordinances; or if due to defective instal­lation of the Product; or if the Product was not used in com­pliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRAN­TIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING
LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE,
INCLUDING, WITHOUT LIMITATION, IMPLIED WARRAN­TIES OF MERCHANTABILITY AND FITNESS FOR A PAR­TICULAR PURPOSE, DURABILITY OR DESCRIPTION OF
THE PRODUCT, ITS NON-INFRINGEMENT OF ANY REL­EVANT PATENTS OR TRADEMARKS, AND ITS COMPLI­ANCE WITH OR NON-VIOLATION OF ANY APPLICABLE
ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION;
THE TERM OF ANY OTHER WARRANTY NOT HEREBY
CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT
IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24)
MONTHS FROM THE PRODUCTION DATE, TO THE
EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE
GOVERNING LAW.

The pass-through Limited Warranty applies only to those
defective Products returned to tekmar during the warranty
period. This Limited Warranty does not cover the cost of the
parts or labor to remove or transport the defective Product,
or to reinstall the repaired or replacement Product, all such
costs and expenses being subject to Purchaser’s agree­ment and warranty with its customers.

tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.

Head Office: 5100 Silver Star Road
Vernon, B.C. Canada V1B 3K4
[phone] Fax. [phone]
Web Site: www.tekmarcontrols.com

Product design, software and literature are Copyright © 2009 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.

4 of 4

Product Warranty Return Procedure All Products that
are believed to have defects in workmanship or materials
must be returned, together with a written description of the
defect, to the tekmar Representative assigned to the terri­tory in which such Product is located. If tekmar receives an
inquiry from someone other than a tekmar Representative,
including an inquiry from Purchaser (if not a tekmar Repre­sentative) or Purchaser’s customers, regarding a potential
warranty claim, tekmar’s sole obligation shall be to provide
the address and other contact information regarding the
appropriate Representative.

All specifications are subject to change without notice.

Printed in Canada. D 324 - 03/09.