Wiring Guide

9 of 12 © 2008 W 335 - 12/08
tN4 C R Rh1 W1
tN4
Thermostat
tN4 C R Rh1 W1
tN4
Thermostat
tN4 C R Rh1 W1
tN4
Thermostat
tN4 C R Rh1 W1
tN4
Thermostat
C
C
R
R
LN
NEC / CEC
Class 2
Transformer
24 V (ac)
MMMMMM
tN4 C R Rh1 W1
tN4
Thermostat
tN4 C R Rh1 W1
tN4
Thermostat
L
N
Zone Manager 335
Meets Class B:
Canadian ICES &
FCC Part 15
Made in Canada
Zone A1
Zone A2
Power
Zone Group Pump A
Zone A3
Zone A4
Zone A5
Zone A6
tN4
tektra 996-01
For product instructions, see brochure
Input Power: 115 V (ac) ±10% 60 Hz 12 A
Relay Rating: 115 V (ac) 5 A
All Loads Using Input Power: 11.5 A
Caution! Disconnect All
Power before Opening
Limited power available, see wiring brochure
For product literature:
www.tekmarcontrols.com
1 23456789101112 13 14 15 16 20
H7003B
32 33 34 35 36 37 38 39 40 41 42 43
17 18 19
21 22 23 24
25
26 27
24 V (ac) Fuse: T2.5 A 250 V
28 29 30
31
On/Off
Zone Group
Pump A Delay
Zone Group
Pump A
A1
A2
A3
A4
A5
A6
A1
A2
A3
A4
A5
A6
tN4 C C CWWRRPmp tN4 tN4 C WRtN4 C WRRtN4 C WtN4 RCWtN4
Input Power Zone Group Zone A1 Zone A2 Zone A3 Zone A4 Zone A5 Zone A6
Zn Grp A A tNt Zone A1 tNt Zone A2 tNt Zone A3 tNt Zone A4 tNt Zone A5 tNt Zone A6
N
L
N
Pmp A
C
Vlv
C
Vlv
C
Vlv
C
Vlv
C
Vlv
C
Vlv
Supply /signal wires 90°C min.
Use the supplied Job Records to determine if an external
24 V (ac) transformer is required.
If the combined total 24 V (ac) load exceeds 50 VA, an
external NEC / CEC Class 2 transformer is required.
1. Determine the number of zones (thermostats and zone
valves) that require an external transformer.
2. Choose a transformer with a VA rating sufficient to
operate these zones. (Thermostats and Zone Valves)
3. Mount and wire the external transformer according to
the manufacturer’s instructions.
4. For each of the selected zones, connect the thermostat’s
R wire to the external transformer’s 24 V (ac) R output.
(Do not use the 335’s R terminals)
5. Connect the C terminal of the external transformer’s
24 V (ac) output to terminal 25 (C) on the Zone
Manager.
Note: For each zone using this external transformer,
only the tN4, C and W terminals from the thermostat are
connected to the Zone Manager.
Wiring an External Transformer Terminal 25
Adding Extra VA
Example: Zones A1, A2, A3 operate off internal 335 transformer.
Zones A4, A5, A6 operate off external 24 V (ac) NEC / CEC Class 2 transformer.