tekmar 324 tN2 Zone Expansion Module - Manual (Page 2)

© 2009 D 324 - 03/09 2 of 4
DIP Switch Settings
The DIP switches are found on the left hand side of the 324.
Sequence of Operation
Zone Expansion Module 324
tektra 1028-01
Relay Rating: 115 V (ac) 5 A
Zone Power: 115 V (ac) ±10% 60 Hz, 12 A
5 A (max)
H7016A
tN2 tN2
51 50 52
Zone 1 Zone 1
tN2 tN2 tN2
54 53 55
Zone 2
tN2 tN2
57 56
Zone 3
tN2
Zone 4
C
62 61 63
tN4
64
Pmp
tN4 Expansion
1 VA Max
Zone Group
75 76
N Pump
Power Zone 1
Zone 2
Zone 3
Zone 4
tN4
Zone Group Pump
Cooling
Fan
Zone Group
Pump Delay
Zone Group
Pump
On/Off
2
3
4
4
1
1
2
3
R G Y Rc
58 60 59
Zn 4 Cool Fan
C / N
Zone Power
65 66
R / L C / N
Zone 1
67 68
Vlv/Pmp C / N
Zone 2
69 70
Vlv/Pmp C / N
Zone 3
71 72
Vlv/Pmp C / N
Zone 4
73 74
Vlv/Pmp
Cool & Fan Relay Rating:
24 V (ac) 2 A
Meets Class B: Canadian
ICES & FCC Part 15
Supply wires
75°C minimum
Made in Canada
tN2
( )
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.
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).
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.
•
•
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
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.
•
•
•
•
24 V (ac) R & C
115 V (ac) L & N
Zone Expansion Module 324
tektra 1028-01
Relay Rating: 115 V (ac) 5 A
Zone Power: 115 V (ac) ±10% 60 Hz, 12 A
5 A (max)
H7016A
tN2 tN2
51 50 52
Zone 1 Zone 1
tN2 tN2 tN2
54 53 55
Zone 2
tN2 tN2
57 56
Zone 3
tN2
Zone 4
C
62 61 63
tN4
64
Pmp
tN4 Expansion
1 VA Max
Zone Group
75 76
N Pump
Power Zone 1
Zone 2
Zone 3
Zone 4
tN4
Zone Group Pump
Cooling
Fan
Zone Group
Pump Delay
Zone Group
Pump
On/Off
2
3
4
4
1
1
2
3
R G Y Rc
58 60 59
Zn 4 Cool Fan
C / N
Zone Power
65 66
R / L C / N
Zone 1
67 68
Vlv/Pmp C / N
Zone 2
69 70
Vlv/Pmp C / N
Zone 3
71 72
Vlv/Pmp C / N
Zone 4
73 74
Vlv/Pmp
Cool & Fan Relay Rating:
24 V (ac) 2 A
Meets Class B: Canadian
ICES & FCC Part 15
Supply wires
75°C minimum
Made in Canada
tN2