5
IOM, WD Models
Enertech Global
⚠
CAUTION
⚠
GEOTHERMAL equipment is designed for indoor
installation only. DO NOT install or store unit in
a corrosive environment or in a location where
temperature and humidity are subject to extremes.
Equipment is not certified for outdoor applications. Such
installation will void all warranties.
Pre-Installation Steps
1.
Compare the electrical data on the unit nameplate with
packing slip and ordering information to verify that the
correct unit has been shipped.
2.
Inspect all electrical connections
and wires. Connections must be clean and tight at the
terminals, and wires should not touch any sharp edges
or copper pipe.
3.
Verify that all refrigerant tubing is free of dents and
kinks. Refrigerant tubing should not be touching other
unit components.
4.
Before unit start-up, read all manuals and become
familiar with unit components and operation.
Thoroughly check the unit before operating.
Section 2: Installation Introduction
Components
Master Contactor: Energizes Compressor
Logic Board: Logic Board operates the compressor and
protects unit by locking out when safety switches are engaged.
It also provides fault indicator(s).
Terminal Strip: Provides connection to the thermostat or other
accessories to the low voltage circuit.
Transformer: Converts incoming (source) voltage to 24V AC.
Low Voltage Breaker: Attached directly to transformer,
protects the transformer and low voltage circuit.
Reversing Valve: Controls the cycle of the refrigerant system
(heating or cooling). Energized in cooling mode.
High Pressure Switch: Protects the refrigerant system from
high refrigerant pressure, by locking unit out if pressure
exceeds setting.
Low Pressure Switch: Protects the refrigerant system from low
suction pressure, if suction pressure falls below setting.
Flow Switch (Freeze Protection Device): Protects the water
heat exchanger from freezing, by shutting down compressor if
water flow decreases. (SOLD SEPARATELY)
Compressor (Copeland Scroll): Pumps refrigerant through
the heat exchangers and pressurizes the refrigerant, which
increases the temperature of the refrigerant.
⚠
CAUTION
⚠
Before drilling or driving any screws into cabinet, check
to be sure the screw will not hit any internal parts or
refrigerant lines.