8
Installation, Operation & Maintenance - HEH/HEV Series
Horizontal Installation
Figure 3: Typical Horizontal Unit Installation
Air Coil
- To obtain maximum performance, the air coil
should be cleaned before start-up. A 10% solution of
dishwasher detergent and water is recommended for
both sides of the coil. A thorough water rinse should
follow. UV based anti-bacterial systems may damage
coated air coils.
Notice! Installation Note - Ducted Return: Many
horizontal WSHPs are installed in a return air ceiling
plenum application (above ceiling). Vertical WSHPs are
commonly installed in a mechanical room with free return
(e.g. louvered door). Therefore, filter rails are the industry
standard and are included on Comfort-Aire/Century
commercial heat pumps for the purposes of holding the
filter only. For ducted return applications, the filter rail
must be removed and replaced with a duct flange or filter
frame. Canvas or flexible connectors should also be used
to minimize vibration between the unit and ductwork.
Unit Hanger Kits
(included)
Insulated supply duct with
at least on 90 deg. elbow
to reduce air noise
Suppy Air
Unit Power
Disconnect
Ball valve with optional
integral P/T plug
Unit Power
Power Wiring
Thermostat
Wiring
Stainless Steel
Braid Hose with
Integral “J” Swivel
3/8” [10mm] thread rods
(by others)
Building
Water out
Water in
Loop
Figure 2: Horizontal Unit Pitch
1/4” (6.4mm) pitch
toward drain for drainage
Drain Connection
Summary of Contents for Comfort-Aire Century HE Series
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Page 32: ...32 Installation Operation Maintenance HEH HEV Series Typical Wiring Diagram Single Phase Unit...
Page 33: ...33 Installation Operation Maintenance HEH HEV Series Typical Wiring Diagram Three Phase Unit...
Page 34: ...34 Installation Operation Maintenance HEH HEV Series Typical Wiring Diagram 460 Volt Unit...