HCM-410CP-IM (12/15)
Page 7
Installation
– Refrigerant Connections
The Hybrid Cooling Module has two refrigerant connections on the service side of the unit as shown
in Figure 1. The connections are the same size as each other. Each connection is identified with a
label saying “Compressor” or “Earth loops”. Check Figure 1 and the table on page 3 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
A top view of typical Hybrid Cooling Module and line set vapor line connections are illustrated in
Figure 4. For new installations of an EarthLinked system with an HCM, an alternate method to the
one shown in Figure 4 is to run a single piece vapor line from the compressor unit to the HCM and
another single piece vapor line from the HCM to the vapor manifold of the earth loop system.
IMPORTANT!
The Hybrid Cooling Module has a factory charge of dry nitrogen at
approximately 35 psig. Relieve the nitrogen from the system by means of the
Schrader valve located on the compressor unit connection shown in Figure 1.
