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 316 - 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
Application Drawing
Sizing the External Transformer:
Add up all the thermostat loads (VA) connected to the Wiring
Center. The transformer must have higher capacity than this
total load.
+
11 VA
=
T-stats
+
Control Total Load
Maximum Zone Power Input 115V, 12A
tN4 C R W
tN4
Thermostat
tN4 C R W
tN4
Thermostat
tN4 C R W
tN4
Thermostat
Pump
115 V (ac)
LNG
Pump
Pump
Pump
tN4 C R W
tN4
Thermostat
OR
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
tekmar
Transformer 009
24 V (ac)
C
C
R
R
L
N
Power
Zone 1
Zone 2
Zone 3
Zone 4
End Switch
C
Zone 2
WtN4 R C
Zone 3
WtN4 R C
Zone 4
WtN4 R
tN4 Wiring Center 316
Four Zone Pumps
W tN4C tN4C
Zone 1 Expansion
End Switch
C
Input Power
RR
H8002A
X X
Input Power: 24 V (ac) ±10% 60 Hz
11 VA Class 2
End Switch: 24 V (ac) 2 A
Pump Relays: 115 V (ac) 5 A
Zone Power: 115 V (ac) 12 A
Made in Canada
tektra 1031-01
Use at least 167°F (75°C) conductors
Use tekmarNet
®
4 Thermostats to achieve better system performance
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)
Wiring Conventional Thermostats:
The tN4 Wiring Center 316 may be used with conventional
thermostats instead.
•
• Connect the thermostat heat relay wires to the R and W
terminals of the 316.
•
• Do not mix conventional and tekmarNet
®
Thermostats on the
same Wiring Center.
•
• See the Installation and Operation Manual D316 for more
detailed wiring information.