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CONNECTING REMOTE CONDENSER COIL AND FAN ASS’Y (IF APPLICABLE)
REFRIGERATION LINES TO COOLING UNIT
(see Figure 6 )
Connect refrigeration lines, from Remote Condenser Coil and Fan Assembly, to refrigeration connectors on
back of Cooling Unit.
CONNECTING ELECTRICAL POWER CIRCUIT TO COOLING UNIT
(see Figures 5 or 6 and 15)
IMPORTANT: Before applicable single-phase 60HZ or 50HZ electrical power circuit is connected to the
Cooling Unit, service power voltage entering the building must be identified. Service power voltage
entering the building will either be 208 or 230VAC and may be posted on the main service box. If not,
the installer must contact the local electrical power company for information. If these two voltage
identification attempts should fail, a voltage reading must be performed. If service power voltage is
below 218VAC, the red electrical wire connected to the 240VAC terminal on LINE (primary) side of the
240/24VAC power transformer inside the Cooling Unit switches electrical control box (see Figure 3 and
15) must be disconnected from the 240VAC terminal and be connected to the 208VAC terminal. If
voltage is above 218VAC, power transformer red electrical wire will remain connected to the 240VAC
terminal. If installer is not sure of the service power voltage entering the building, leave the red
electrical wire connected to the 240VAC terminal on the power transformer. If service power voltage is
below 218VAC, proceed as follows:
1. Remove four screws securing switches electrical control box (see Figure 5 or 6) to Cooling Unit cabinet.
2. Pull switches electrical control box out for access to the 240/24VAC power transformer.
3. Remove red electrical wire from the 240VAC terminal on LINE (primary) side of power transformer and
connect it to the 208 VAC terminal.
4. Install Cooling Unit switches electrical control box and secure with four screws.
RESET BUTTON
C
208V
240V
FIGURE 3. 240/24VAC POWER TRANSFORMER
WARNING: Make sure 40-amp minimum-rated disconnect switch or HACR circuit breaker (if
applicable) is in ‘ ‘OFF’’ position.
1. Remove cover from electrical box on back of Cooling Unit.