UNITROL MODEL #8000, 8012
CHILLER
DIAGNOSTICS
7
LOW AIR FLOW ACROSS THE CONDENSER CAUSED BY
INSTALLATION OF CHILLER TOO CLOSE TO A WALL: If
the air intake (air intake filter) is less than 36” from a wall, or the
air exhaust grill on the back of the chiller is less than 36” from a
wall, air flow will be restricted and will reduce the ability of this
air to remove heat from the condenser coil. The chiller has to
be moved to eliminate this problem.
USE OF AN INTAKE AIR FILTER DURING EXTREMELY
HOT DAYS: If the room temperature exceeds 95ºF, it is
possible that the small reduction caused by even a clean intake
air filter will cause the system to overheat and trip the HIGH
FREON safety switch. Remove the air filter and replace it when
air temperature falls below 90ºF.
THE NEED FOR MORE AIR FLOW OVER THE CONDENSER
COIL: In extreme cases of high room temperature and
restricted air flow around the chiller, it might be necessary to
use an additional fan to force air across the condenser coil.
This can be done using a commercial fan blowing air into the
front of the coil (where air filter is located), or by installing a
factory fan booster kit. Consult the Unitrol service department
on this.
To Next Page