RT-SVX25C-EN 41
Start Up
Dehumidification Option
Momentarily jump across the Test 1 and Test 2 terminals of the LTB1 until the unit enters test mode
7. ( Tab l e 6 , p . 37 )
Once the unit is in the reheat test mode, verify that the 3 way valve has shifted to the reheat position
and that the supply temperature rises 10 deg F more than when in cooling mode stage 2. Monitor
the suction pressure for 15 minutes. The suction pressure should remain within 5 psi of normal
cooling operation.
Heating Start-Up
1. Clamp an amp meter around one of 1st stage heater power wires at the heater contactor.
2. ReliaTel Control Using the Service Test Guide in Ta b l e 6 , p . 3 7 , continue the SERVICE TEST start-
up procedure for each compressor circuit.
Momentarily jump across the Test 1 & Test 2 terminals on LTB one additional time if continuing
from previous component start-up or until the desired start-up component Test is started.
3. Verify that the heater stage is operating properly.
4. Clamp an amp meter around one of 2nd stage heater power wires at the heater contactor (if
applicable).
5. ReliaTel Control Using the Service Test Guide in Ta b l e 6, p . 3 7 , continue the SERVICE
TEST start-up procedure for each compressor circuit. Momentarily jump across the Test 1 & Test
2 terminals on LTB one additional time if continuing from previous component start-up or until
the desired start-up component Test is started.
6. Verify that the heater stage is operating properly
7. To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or
proceed to the next component start-up procedure. Remove electro mechanical test mode
connections (if applicable).
Final System Set Up
After completing all of the pre-start and start-up procedures outlined in the previous sections (i.e.,
operating the unit in each of its Modes through all available stages of cooling & heating), perform
these final checks before leaving the unit:
• Program the Night Setback (NSB) panel (if applicable) for proper unoccupied operation. Refer
to the programming instructions for the specific panel.
• Verify that the Remote panel “System” selection switch, “Fan” selection switch, and “Zone
Temperature” settings for automatic operation are correct.
• Inspect the unit for misplaced tools, hardware, and debris.
• Verify that all exterior panels including the control panel doors and condenser grilles are
secured in place.
• Close the main disconnect switch or circuit protector switch that provides the supply power to
the unit’s terminal block or the unit mounted disconnect switch.
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