tekmar 325 User Manual
- Data Brochure
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Zone Expansion Module 325
D 325
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 325 is designed to simplify the wiring between tN4 thermostats and zone valves. The 325
has an internal transformer that supplies power to the tekmarNet®4 (tN4) thermostats and connected zone valves.
Features:
• tN4 Compatible
• Internal Transformer
• Six Powered Zone Valve Outputs
• Powered Zone Group Pump Output
• Simple Wiring
• Time Delay for Thermal Motor Zone Valves
• 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
On/Off
C1
C2
C3
Zone Group
C4
Pump C
C5
C6
C1
C2
Zone Group
C3
Pump C Delay
C4
C5
C6
24 V (ac) Fuse: T2.5 A 250 V
77 78 79 80 81 82 83 84 85 86 87 88
Zone C1 Zone C2 Zone C3 Zone C4 Zone C5 Zone C6
Vlv
C
Vlv
C
C
Limited power available, see wiring brochure
Zone C1
Zone C2
Zone C3
Zone C4
Zone C5
Zone C6
Vlv
Vlv
C
Vlv
C
CCWWRRtN4 tN4 C WRtN4
tNt Zone C4 tNt Zone C5 tNt Zone C6
63 64 65 66
Zone Expansion Module 325
Power
Zone Group Pump C
Meets Class B:
Canadian ICES &
FCC Part 15
Vlv
C
67 68 69 70 71 72 73 74
Made in Canada
tN4C
Zn Grp C
75 76
tN4
tektra 998-01
Relay Rating: 115 V (ac) 5 A
89 90
Zone Group
Pmp C
5 A (max)
H7001B
N
1 of 4 © 2005 D 325 - 06/05
Sequence of Operation
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24 V (ac) Powered Outputs
The 325 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 325 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 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.
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
On/Off
C1
C2
C3
Zone Group
C4
Pump C
C5
C6
C1
C2
Zone Group
C3
Pump C Delay
C4
C5
C6
24 V (ac) Fuse: T2.5 A 250 V
77 78 79 80 81 82 83 84 85 86 87 88
Zone C1 Zone C2 Zone C3 Zone C4 Zone C5 Zone C6
Vlv
Vlv
C
C
Limited power available, see wiring brochure
Zone C1
Zone C2
Zone C3
Zone C4
Zone C5
Zone C6
Vlv
C
Vlv
C
C
CCWWRRtN4 tN4 C WRtN4
tNt Zone C4 tNt Zone C5 tNt Zone C6
63 64 65 66
Zone Expansion Module 325
Power
Zone Group Pump C
Vlv
Vlv
C
67 68 69 70 71 72 73 74
Meets Class B:
Canadian ICES &
FCC Part 15
Made in Canada
tN4C
Zn Grp C
75 76
tN4
tektra 998-01
Relay Rating: 115 V (ac) 5 A
89 90
Zone Group
Pmp C
5 A (max)
H7001B
N
115 V (ac) L & N
© 2005 D 325 - 06/05 2 of 4
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