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© 2011  

D 315 - 04/11

tN4 Wiring Center 315

D 315

04/11

Zoning

Replaces: 04/09

Installation & Operation Manual

Benefi ts

Simple, convenient wiring location
Compact enclosure for flexible installation
Reduce equipment cycling when combined with 
tekmarNet

®

4 Thermostats



The tekmarNet

®

4 (tN4) Wiring Center 315 is designed to 

operate up to six zone valves in a hydronic heating system. 
It can be mounted near a remote zone manifold, providing a 
convenient location to wire both thermostats and zone valves 
while only requiring two wires to be run back to the mechanical 
room. When combined with tekmarNet

®

4 Thermostats, all 

devices communicate to provide a synchronized end switch 
that reduces cycling of equipment. A zone group pump 
relay is also available to switch a pump.

Features

Six 24 V (ac) powered zone outputs
For use with tekmarNet

®

4 Thermostats

tN4 expansion terminals
Isolated end switch
Zone group pump relay
External diagnostic LEDs
CSA C US Certified for use in USA and Canada







Introduction

Power

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

Zone 6

End Switch/ Zone Group Pump

tN4 Wiring Center 315

Six Zone Valves 

Note

Not for use with tekmarNet

®

2 Thermostats

Summary of Contents for D 315

Page 1: ...tats and zone valves while only requiring two wires to be run back to the mechanical room When combined with tekmarNet 4 Thermostats all devices communicate to provide a synchronized end switch that r...

Page 2: ...nnel for servicing There are no user serviceable parts Attempting to do so voids warranty and could result in damage to the equipment and possibly even personal injury or death Installation The instal...

Page 3: ...nably close proximity to the equipment All line voltage wire connections are recommended to be pulled inside a flexible or solid conduit Always follow proper wiring practices building and electrical c...

Page 4: ...utral wires to the 115 V ac side of the transformer Use a wire nut or approved connector See Figure 1 Wire the Power L Connect the 115 V ac line voltage L wire to the 115 V ac side of the transformer...

Page 5: ...W ter minals on the 315 Low Voltage Wiring 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...

Page 6: ...oltage through the ther mostat See the thermostat installation manual for details Testing the Zone Output 1 Use an electrical test meter to measure the ac voltage between the C and the Vlv terminals f...

Page 7: ...C Zone 5 R W tN4 C Zone 6 R H8001B End Switch Use at least 167 F 75 C conductors Description tN4 Wiring Center 315 six tekmarNet 4 Thermostats and six zone valves wired to a tekmar System Control 420...

Page 8: ...ne 3 W tN4 R C Zone 4 W tN4 R tN4 Wiring Center 315 Six Zone Valves W tN4 C tN4 C X Zone 1 Expansion Vlv C Zone 1 Vlv C Zone 2 Vlv C Zone 3 Vlv C Zone 4 Vlv C Zone 5 Vlv C Zone 6 X C Input Power R R W...

Page 9: ...Pump C Zone 2 W tN4 R C Zone 3 W tN4 R C Zone 4 W tN4 R tN4 Wiring Center 315 Six Zone Valves W tN4 C tN4 C X Zone 1 Expansion Vlv C Zone 1 Vlv C Zone 2 Vlv C Zone 3 Vlv C Zone 4 Vlv C Zone 5 Vlv C Zo...

Page 10: ...ations and holidays tN4 Setpoint Control 161 162 Control hot tubs pools and more ZONE 1 The zone 1 thermostat is calling for heat and the 24 V ac output is energized ZONE 2 The zone 2 thermostat is ca...

Page 11: ...ng on each thermostat Zone Synchronization Another feature of the Wiring Center is Zone Synchronization In typical zoned systems the thermostats operate on a stand alone basis This means that a zone t...

Page 12: ...y Purchaser to its customers which are different from or in excess of the tekmar Lim ited Warranty are the Purchaser s sole responsibility and obligation Pur chaser shall indemnify and hold tekmar har...

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