Tekmar 519 Thermostat Installation Manual de usuario descargar pdf (Pagina 10)

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A Watts Water Technologies Company

Switching Relay

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Testing the Thermostat Wiring

Testing the Power

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If the thermostat display turns on, this indicates that the thermostat is operating correctly

and there are no electrical issues. In the event that the display is permanently off:

1. Remove the thermostat front.

2. Use an electrical meter to measure voltage between the R and C wiring terminals.

For AC power supplies the voltage should measure between 10 to 30 V (ac). For

DC power supplies the voltage should measure between 10 to 30 V (dc).

3. If the voltage on the R and C wire terminations is continuous and the thermostat

display is not on, the thermostat may have a fault. Contact your tekmar sales

representative for assistance.

If the thermostat display intially powers on but later shuts off intermittantly, there

may be a short circuit from the W wire to ground, or the power supply is too small to

power the load.

Testing the Heat Zone Output Wiring

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1. Touch the

button and set the heating temperature above the current room

temperature. Make sure the display does not flash “Max” if using a floor sensor.

2. When the “Heat On” symbol appears on the display, use an electrical meter to check

for voltage on the W and C wires connected to the zone valve, wiring center, relay

or switching relay. The electrical meter should read 10 to 30 V (ac) or (dc).

3. If the W and C wire have voltage, check the zone valve, wiring center, relay or pump

to determine if the heat device is operating correctly.

Thermostat Wiring

518

R Rh W1 S1 Com

No Power

24 V

HNXX HNHN NH

Com

Switching Relay

Zone 1 Zone 2 Zone 3

Class 2

Transformer

Zone 1 Zone 2 Zone 3

519

R Rh W1 S1 Com

No Power

Slab Sensor 079

Pump

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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Tekmar 519 Thermostat Installation Manual de usuario Pagina 10

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