RT-SVD03G-EN 145
Novar Controls (Sequence of Operation)
Be aware that the compressor will remain on for a minimum of 3 minutes even if the short is
removed. To immediately discontinue compressor operation disconnect unit power. Verify that
the unit is producing cool, conditioned air.
Keep in mind that the outdoor air damper will close to minimum position when the discharge
air cools below the economizer setpoint.
15. If compressors do not activate within 3 minutes of placing the short verify the Cool 1 relay
output is properly connected to the Thermostat-Y1 input on the RTRM and that compressor
circuit 1 is properly connected according to the Reliatel Installation guide. Verify the
compressor(s) has properly connected line power and that all in-line safety limits and
contactors are functioning correctly.
16. Follow the same procedure as above to check proper operation of the 2nd stage of compressors
by placing a short across the Cool 2 output relay. Keep in mind that the Cool 1 and Cool 2
thermostat controls operate independently of each other and must adhere to a 3-minute delay
between stage additions.
If problems are encountered complete the checks above except verify proper connection
between the Cool 2 output relay and the RTRM Thermostat-Y2 input.
17. After verifying proper operation of both refrigeration circuits remove all shorts. Compressors
should deactivate immediately if they have been running for at least 3 minutes. The supply fan
will remain on for 60 seconds, and the outdoor damper will close after the supply fan shuts off.
18. For heating checks (if installed) place a short across the jumper tabs on the Heat 1 output relay.
If the unit is a gas heat unit the gas modules will begin the approximately 45 seconds cycle
initiation. The supply fan will remain off until the gas heat has successfully initiated and
operated for approximately 60 seconds.
If the unit is an electric heat unit the 1st stage of electric heat will be energized and the supply
fan will come on immediately. The unit should be discharging warm air.
19. If heat does not activate after placing the short, verify proper connection of the Heat 1 output
relay to the RTRM Thermostat-W1 input. Verify proper Reliatel Module heater connections and
function using the Reliatel Installation Guide.
20. To activate the second stage of heat (if applicable) place a short across the jumper tabs on the
Heat 2 output relay. A similar process as described with the 1st stage of heat will take place.
Verify, if possible, the 2nd stage of heat activates.
If the 2nd stage of heat does not activate, verify proper connection of the Heat 2 output relay
to the RTRM Thermostat-W2 and verify proper ReliaTel heat module output connections. Also
verify line power connections to the heating units.
21. If heat operation is correct, disconnect all shorts from the jumper tabs on the relays. All heat
will deactivate within a few seconds. Supply fan will deactivate when electric heat deactivates
or 90 seconds after gas heat deactivates.
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