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Installation, Operation & Maintenance - HEH/HEV Series
Vertical Installation
Sound Attenuation for Vertical Units
- Sound
attenuation is achieved by enclosing the unit within a
small mechanical room or a closet. Additional measures
for sound control include the following:
1. Mount the unit so that the return air inlet is 90° to the
return air grille. Refer to Figure 9. Install a sound baffle
as illustrated to reduce line-of sight sound transmitted
through return air grilles.
2. Mount the unit on a rubber or neoprene isolation pad
to minimize vibration transmission to the building
structure.
Return
Air Inlet
Figure 9: Vertical Sound Attenuation
Condensate Piping for Vertical Units
- A condensate
line must be installed and pitched away from the unit to
allow for proper drainage. This connection must meet
all local plumbing/building codes. Vertical units utilize
a condensate hose inside the cabinet as a trapping
loop; therefore an external trap is not necessary. Figure
10a shows typical condensate connections. Figure 10b
illustrates the internal trap for a typical vertical heat
pump. Each unit must be installed with its own individual
vent (where necessary) and a means to flush or blow
out the condensate drain line. Do not install units with a
common trap and/or vent.
Vent
*3/4" FPT
3/4" PVC
Alternate
Condensate
Location
Water
Connections
* Some units include a painted drain connection. Using a
threaded pipe or similar device to clear any excess paint
accumulated inside this fitting may ease final drain line installation.
1/8" per foot
slope to drain
Figure 10a: Vertical Condensate Drain
Figure 10b: Vertical Internal Condensate Trap
located on corner post
Notice! Units with clear plastic drain lines should
have regular maintenance (as required) to avoid
buildup of debris, especially in new construction.
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.
Summary of Contents for Comfort-Aire Century HE Series
Page 1: ...www marsdelivers com Installation Operation and Maintenance HEH HEV Series...
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...