Wiring Guide

Product design, software and literature are Copyright © 2009 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
2 of 2
All specifications are subject to change without notice.
Printed in Canada. Q 313 - 04/09.
tekmar Control Systems Ltd., Canada, tekmar Control Systems, Inc., U.S.A.
Head Offi ce: 5100 Silver Star Road, Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. [phone] Web Site: www.tekmarcontrols.com
Input Power: 24 V (ac) ±10% 60 Hz
100 VA Max, Class 2
Control Load: 11 VA
End Switch: 24 V (ac) 2 A
Zone Output: 2 A (48 VA) per zone
4 A (96 VA) max total
Power
Zon
e 1
Zone 2
Zone 3
Zone 4
End Switch
Zone 1 Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
tN2 Wiring Center 313
Four Zone Valves
tN4CX
Expansion
VlvC
Zone 1
VlvC
Zone 2
VlvC
Zone 3
VlvC
Zone 4
Vlv
XC
Input Power
R
For use with tN2 thermostats only
Meets Class B: ICES & FCC Part 15
H8003A
End Switch
tN2
Use at least 167°F (75°C) conductors
Made in Canada
tektra 1034-01
tN2 tN2
tN2
Thermostat
tN2 tN2
tN2
Thermostat
tN2 tN2
tN2
Thermostat
tN2 tN2
tN2
Thermostat
Refer to Transformer Data Sheets for Maximum Allowable Loads
Valve Valve Valve Valve
OR
C
C
R
R
Fuse
tN4CX
Expansion
XC
Input Power
R
End Switch
OR
T
T
T
T
tN4CX
Expansion
X
End Switch
Expansion End Switch
tN4
C
tN4CXX
Boiler
Demand
L
N
Application Drawing
Sizing the External Transformer:
Add up all the thermostat and zone valve loads (VA) connected to
the Wiring Center. The transformer must have higher capacity than
this total load. Each tN2 Thermostat draws approximately 2 VA.
++
3 VA
=
T-stats
+
Zone Valves
+
Control Total Load
tN4 connection to tN4 Outdoor
Reset Control
Call for heat to directly enable a
boiler control
Boiler demand to stand-alone
tekmar Boiler Control
External tN4
Connection (ie:
Zone Manager or
Reset Module)
Directly Enabled
Boiler Control
Powered boiler
demand (ie: Input
to tekmar Boiler
Control)
tekmar 009
Transformer 24 V (ac)
For more information on tekmarNet
®
2 Thermostats,
see the D527 Brochure.