FORM 100.10-NOM2
51
YORK INTERNATIONAL
CONDENSATE PAN AND DRAIN LINE
Check the drain pan and drain line periodically to see
that condensate water is being properly drained. Faulty
water drainage could cause sweating and dripping.
FREEZE PROTECTION
All chilled water, hot water and steam coils can be dam-
aged during freezing weather. Pre-cautionary measures
must be taken to prevent freezing such as:
1. For all year operation, ethylene glycol and other
antifreeze solution must be circulated.
During winter operation and shutdowns such as
power failure, night shutdown and weekend shut-
down, the controls must be installed so the valves
will go to the full heat position, and all fresh air
dampers go to the full closed position. The water
FIG. 53 –
DETERMINING LEFT - OR RIGHT-HAND COIL CONNECTION / DRIVE SIDE
circulation pumps must keep circulating water
through the coils and/or auxiliary heat must be main-
tained inside the CurbPak unit cabinet.
2. Draining each coil and relating piping such as traps
and making sure that all low areas also drain.
3. After draining, flush coils with an antifreeze solu-
tion such as ethylene glycol. A solution of 50% eth-
ylene glycol and 50% water will protect from freez-
ing to approximately 35°F below zero at sea level.
WINTERIZING DRAIN TRAPS
During the winter months when the cooling system is
turned off and the unit is exposed to freezing condition,
an antifreeze solution should be poured in the conden-
sate drain trap to prevent freezing and possible dam-
age. The condensate drain trap may also be drained.
LD06361
4
