Electrical Box; Electrical Line Set; Refrigeration Line Sets; Pumpdown System On The Remote Unit - Hussmann HGL-1BS Installation And Service Instructions Manual

compressor will start properly. On start-
up, the valve will hold the suction pres-
sure at the desired setting until the suc-
tion pressure has dropped below the set-
ting, then the valve will open.
If it becomes necessary to check or
reset the valve, the case must be warm
such as after a defrost cycle or from an
initial warm case condition. Put a suction
compound gauge on the compressor suc-
tion valve, start the compressor. If the
pressure needs to be reduced turn the ad-
justment screw clockwise or, counter-
clockwise to raise the pressure. DO NOT
SET THE VALVE BASED ON THE
NAMEPLATE AMPERAGE RATING
AS THE PRESSURE SETTING WILL
BE TOO HIGH AND THE COMPRES-
SOR WILL NOT START PROPERLY.
ELECTRICAL BOX –
The electrical box comes pre-wired
except for the electrical line set coming
from the cabinet. Consult the wiring dia-
gram for proper wiring. There is a power
switch in the box for the compressor and
a separate one for the crankcase heater.

ELECTRICAL LINE SET

When the electrical line set is em-
ployed, power is brought to the case first
and the line set is installed between the
case and the remote unit. Consult the
wiring diagram for proper wiring.
BOTTOM MOUNT VERSIONS -
The refrigeration line set is
provided with quick-connect connections
on both ends for installation at the case
and the remote unit.
The line set is tagged with the end
that is to be attached at the case. The line
set is tagged with the end that is to be at-
tached at the case end.
Do not over tighten the quick con-
nects as this will damage the seals.
After the quick connects are in-
stalled at the case end, the factory supplied
'insulating boot' must be sealed with con-
tact cement to prevent air leakage that can
cause ice and water to build up on the case.
Nylon ties are further provided to seal the
ends but should not be used solely to seal
the ends. Do not over tighten the ties.
TOP MOUNT VERSIONS –
The refrigeration line set is pro-
vided with quick connects to mount to the
remote condensing unit. The lines are fac-
tory installed and sealed at the case end.
Care should be taken when uncoiling the
line set. Do not over tighten the quick con-
nects as this will damage the seals.
PUMPDOWN SYSTEM ON THE
REMOTE UNIT -
Operation – The pumpdown system shuts
off the flow of refrigerant in the high side
liquid line when the case cycles off or dur-
ing a defrost cycle and pumps the refriger-
ant from the evaporator into the condenser
and receiver.
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