Enertech Global, LLC
12
WS Rev. E Models
Installation and Operations Manual
Interior Piping
All interior piping must be sized for proper flow rates and
pressure loss. Insulation should be used on all inside piping
when minimum loop temperatures are expected to be less
than 50°F. Use the Pipe Insulation Table for insulation sizes
with different pipe sizes. All pipe insulation should be a closed
cell and have a minimum wall thickness of 3/8”. All piping
insulation should be glued and sealed to prevent
condensation and dripping. Interior piping may consist of the
following materials: HDPE, copper, brass, or rubber hose
(hose kit only).
Typical Single Compressor Unit Piping Connection
The following drawings indicate typical GSHP connections.
Please refer to product dimensional drawings for actual fitting
and port locations
Pipe Insulation Table
Piping Material
Insulation Description
1” IPS Hose
1-3/8” ID - 3/8” Wall
1” IPS PE
1-1/4” ID - 3/8” Wall
1-1/4” IPS PE
1-5/8” ID - 3/8” Wall
2” IPS PD
2-1/8” ID - 3/8” Wall
Section 5: Unit Piping Installation
In (Ground Loop)
Out (Load Loop)
Out (Ground Loop)
To / From
Earth Loop
Water In
Ra
di
an
t I
n
fl
oo
r
Heating
Water Out
Hydronic Fan Coil
Check Valve
Water to Water
Heat Pump
Pressure Reducing
Valve
Shuto
ff
Valve
Backflow
Preventer
Make-up
Water Line
Expansion Tank
Air Vent
Pressurized
Storage Tank
Shuto
ff
Valve
In ( Load Loop)