tekmar 314 tN2 Wiring Center Installation - Manual (Page 4)

© 2011 D 314 - 05/11 4 of 12
Zone 4
Zone 3
Power
Source
(L,N)
Zone 2 Zone 1
Zone 4
Zone 3
Power
Source
(L,N)
Zone 2 Zone 1
Zone 3
Power
Source
(L,N)
Zone 2 Zone 1
Zone 4
Zone 4
Power
Source
(L,N)
Zone 2 Zone 1
Zone 3
Sizing the Transformer
Control Wiring
Each cable must be pulled from the equipment to the
control’s plastic enclosure. All low voltage wiring connections
enter the enclosure through conduit knockouts on the
sides, or through the square knockouts on the rear. It is
recommended to label each cable for easy identification.
All low voltage wires are to be stripped to a length of 3/8”
(9 mm) to ensure proper connection to the control.
Pull two conductor 18 AWG LVT cable, up to 500 feet
(150 m) for the following equipment:
tekmarNet ® 2 Thermostats
tekmarNet ® 2 House Control (if applicable)
24 V (ac) Power
Boiler T-T (If using End Switch)
Outdoor Sensor 070 (if applicable)
Pull three conductor 18 AWG LVT cable for the following
equipment:
tekmarNet ® 4 Accessories (User Switch, Timer)
•
•
•
•
•
•
Low Voltage Wiring ----------------------------------------------------------------------------------- -----------------------------------------------------------------------------------
The control requires an external transformer with 20 VA
capacity or greater. A tekmar Transformer 009 (or 009K
which includes a 4” x 4” electrical box) can supply up to 40 VA, and includes an in-line fuse to protect the transformer
and control.
Line Voltage Wiring----------------------------------------------------------------------------------- -----------------------------------------------------------------------------------
CAUTION: TURN ALL POWER OFF BEFORE PERFORMING ANY WIRING.
Wire the Pump Grounds
Connect the pump grounds to the power supply ground
as shown in Figure 1. The ground wire must also be
grounded to the electrical box.
Wire the Pump Neutrals (N)
Connect the Neutral (N) wires from each pump and wire
to the 115 V (ac) Neutral (N) wire. If the transformer has
been mounted to this electrical box, connect its neutral
wire with this group. This is shown in Figure 2.
•
•
Wire the Pump Power (L)
Connect the 115 V (ac) line voltage (L) wire to the red
Pump Power (L) wire on the back of the Wiring Center
and to the 115 V (ac) side of the transformer. Use a wire
nut or approved connector. See Figure 3.
Wire the Pumps
Wire each remaining line voltage pump wire into the push-
in wire connector of the corresponding pump lead on the
back of the Wiring Center. This is shown in Figure 4.
•
•
Pump
Leads
Figure 1 - Connect
Ground Wires
Figure 3 - Connect
Line Voltage (Hot)
Figure 4 - Connect
Pump Line (Hot)
Figure 2 - Connect
Neutral Wires