Install Instructions

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A Watts Water Technologies Company

Testing tekmarNet

4 and Stand Alone Wiring

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Testing the Power

1. Remove the front cover from the thermostat.

2. Use an electrical test meter to measure (ac) voltage between the R and C terminals.

The reading should be 24 V (ac) ±10%.

3. Install the front cover.

Testing the Relay Outputs

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Testing the Heat W Relay

1. Set the Mode to Heat and increase the Set Heat temperature above the Room

temperature.

2. The “Heat On” symbol will appear on the display.

3. Use an electrical test meter to measure (ac) voltage between the W and C terminals

at the heating equipment location. The reading should be 24 V (ac) ±10%.

Testing the Cooling Y Relay

1. Set the Mode to Cool and decrease the Set Cool temperature above the Room

temperature.

2. The “Cool On” symbol will appear on the display.

3. Use an electrical test meter to measure (ac) voltage between the Y and C terminals

at the cooling equipment location. The reading should be 24 V (ac) ±10%.

Testing the Fan G Relay

1. Touch the Fan key to set the Fan to “On”.

2. Use an electrical test meter to measure (ac) voltage between the G and C terminals

at the blower fan equipment location. The reading should be 24 V (ac) ±10%.