Tekmar 313 - Page 5

5 of 12 © 2010 D 313 - 11/10
External Power Supply
It is strongly recommended that a transformer with an in-line
fuse be used in order to protect the transformer from high
currents. The tekmar Transformer 009 includes a fuse.
Connect the 24 V (ac) leads from the transformer to the C
and R terminals marked “Input Power” on the 313.
tN2 Thermostats
The 313 is designed to operate with tekmarNet
®
2 Thermostats.
They provide the heating and cooling control for each zone,
and communicate with any other tekmarNet
®
device on
the system.
Connect the tN2 terminals from each thermostat to the
corresponding tN2 terminals for each zone on the 313.
Zone Valves
Wire the zone valves to the C and Vlv terminals on the 313.
End switches on zone valves are not required when
using the 313.
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Low Voltage Wiring
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The enclosure may be mounted directly to a wall or to
an electrical junction box.
Ensure that the high voltage wires are neatly tucked
inside the electrical junction box.
Using 2 of the 4 holes in the back of the enclosure, securely
fasten it to the electrical junction box with 2 #10 screws as
shown in Figure 2.
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Install The Enclosure
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Figure 2
tN4 Expansion Terminals
The 313 uses the Expansion tN4 and C terminals to communicate
with additional Wiring Centers, House Controls, and other
tekmarNet
®
devices.
Connect the tN4 and C Expansion terminals on the 313
to the corresponding tN4 and C Expansion terminals of
the additional external device.
Wiring the End Switch
The 313 can operate a single on-off boiler or provide a
demand to a tekmar control.
Connect the X X End Switch terminals on the 313 to the
T-T (or R-W) terminals on the boiler.
If required, use the X X End Switch terminals to switch
24 V (ac) to power a demand on a tekmar outdoor reset
control.
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