HCM-IMM (10/16) 8
Installation
– Refrigerant Connections
The Hybrid Cooling Module has two refrigerant connections on the service side of the unit as
shown in Figure 1.
Each connection is 7/8”. Each connection is identified with a label saying
“Compressor” or “Earth loops”. Check Figure 1 and the table on page 4 to determine coupling
sizes to match the line set vapor tube size
.
The refrigerant connections have caps brazed on at the factory. They should be un-brazed at
the time that tubing is to be connected to the Hybrid Cooling Module.
After locating the Hybrid Cooling Module as noted earlier, a trench 3 to 4 feet deep is to be
excavated running from the Hybrid Cooling Module to the earth loop line set. If the lines to and
from the Hybrid Cooling Module are to be run parallel to and within 10 feet of the building
foundation or basement wall, both lines are to be insulated with ½
” wall thickness Armaflex
®
or
InsulTube
®
tubing insulation, cased within a PVC pipe. The PVC pipe must be a minimum of 3
feet from the building foundation or wall. This is illustrated for a typical application in Figure 3.
Figure 3. Hybrid Cooling Module Refrigerant Piping
IMPORTANT!
The Hybrid Cooling Module is factory charged with dry nitrogen. Relieve
the nitrogen from the system by means of the Schrader valve located on
the compressor unit connection and/or earth loop connection shown in
Figure 1.
