SM/SV-Space Master Unit Coolers (E316008_B)
18
Figure 13 (K) KGG (2 Pipe) Cool Gas Coil and Drain Pan Wiring
Single Pole Single Throw (SPST) contacts Fan Delay Thermostat mounted on the unit.
RECOMMENTED (SPST) FAN DELAY THERMOSTAT SETTINGS FOR KGE/HGG
ROOM TEMPERATURE
RANGE
DIFFERENTIAL
0 F TO +35 F
45 F
15 F
BELOW 0 F
20 F
10 F
8
START UP
8.1
PRE-STARTUP
After the installation is completed, a review of the following items should be preformed before the system is
placed into operation:
Check electrical connections, fan blade set screws, fan motors, guards and all other fasteners for tightness. Be
sure the thermostatic expansion valve bulb is properly located, strapped and insulated.
With the system operating, check the supply voltage. It must be /- 10% of the voltage marked on the
unit nameplate.
For electric defrost systems check the defrost timer to see that it is set for the correct time of day and the starting
pins have been installed (normally two per day). The defrost should be scheduled for times when the freezer
doors are not likely to be open.
When the system is first started up, the box temperature is typically above the opening temperature of the fan
delay thermostat. The fans may remain off for a lengthy period of time. To prevent this it is permissible to install
a temporary jumper wire between terminals “F” and “B” or “N” and “B” depending on the unit wiring
arrangement. Once the box temperature is below +25 F the jumper wire should be removed. See Figure 7, 8, 9
