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
1 of 4 © 2009 D 324 - 03/09
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.
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