JOHNSON CONTROLS
96
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
SECTION 6 – COMMISSIONING
PREPARATION – POWER ON
Perform the commissioning using the
detailed checks outlined in the EQUIP-
MENT PRE-STARTUP and STARTUP
CHECK LIST as the commissioning
procedure is carried out.
Apply power to the unit. Turn ON the option panel cir-
cuit breaker if supplied.
The machine is now live!
Switch Settings
Ensure that the condensing unit OFF/ON UNIT switch
at the bottom of the keypad is OFF. Place the optional
circuit breaker handle on the panel door to ON. The
customer’s disconnection devices can now be set to
ON.
Verify the control panel display is illuminated. En-
sure that the system switches under the SYSTEM
SWITCHES Key are in the OFF position.
Compressor Heaters
Verify the compressor heaters are energized. If the am-
bient temperature is above 96 °F (36 °C) the compres-
sor heaters must be on for at least 8 hours before start-
up to ensure all refrigerant liquid is driven out of the
compressor and the oil. If the ambient temperature is
below 86 °F (30 °C), allow 24 hours.
Air Flow Switch
Verify an air flow switch is correctly fitted in the cus-
tomer’s ductwork and wired into the control panel cor-
rectly using shielded cable.
The air flow switch should be connected to terminals
13, 50 and 51 of XTBC1 on the panel. (See Figure 10
on page 41).
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