Greenheck HRE-55 User Manual
Energy Recovery Ventilator
Model HRE
• Commercial • Institutional
• Summer Evaporative Cooling
• Winter Heat Recovery
February
2005
Features & Accessories
Model HRE
Heat Recovery Ventilator
with Evaporative Cooling
The model HRE incorporates a sensible energy
recovery wheel and evaporative cooling modules to
condition outdoor air without mechanical
refrigeration. This product is specifically designed for
hot, relatively arid climates. Four sizes provide airflow
capacities from 1,000 cfm to 8,300 cfm with external
static pressures up to 1.5 in. wg.
Evaporative Cooling Modules
Evaporative cooling modules include Munters
CELdek media (GLASdek optional) and a stainless
steel frame. Evaporative cooling media is 12 inches in
depth and capable of 90% cooling effectiveness.
A cooling module in the exhaust airstream for indirect
evaporative cooling is standard with the model HRE.
For combination indirect and
direct evaporative cooling, an
evap section may also be
added to the outdoor air
stream.
Indirect
Evaporative
Cooler
Direct Evaporative
Sensible
Wheel
Unit shown with following accessories: A) indirect gas
heater, B) intake filters, C) exhaust filters, and D) direct
evaporative cooling.
Cooler
Forward
Curved
Blowers
PostHeating
Optional features available
with evaporative cooling:
• Automatic drain and fill
with freeze protection
Sensible Wheel
Summer Cooling
The sensible wheel
transfers energy from the
cooled exhaust air to the
outdoor air
transferring the moisture
om the exhaust side
fr
evaporative cooling
process.
Winter Heating
The sensible wheel
transfers heat fr
outdoor air stream in typical energy recovery fashion.
, without
om the exhaust air str
eam to the
Heating Options
ect Gas-Fir
Indir
•
• Hot Water
• Electric
2
ed (outdoor only)
Standard Features
An indirect evaporative cooling module and
sensible energy recovery wheel provide a low cost
alternative for conditioning of outdoor air. Double
wall construction is standard keeping insulation
out of the airstream. Compartments requiring
routine maintenance have hinged doors for quick
and easy access.
Accessories
• Direct Evaporative Cooler
• Dampers - Internally mounted
• Painted Exteriors
• Roof Curbs
Timed Exhaust Frost Control
•
eheat Fr
Pr
•
eather Hoods
W
•
• Dirty Filter Sensors
• Rotation Sensors
• Filters
Economizer Mode
•
• Remote Panels
• Spare Wheel Segments
• Duct Flanges
• GFCI Receptacle (wiring by others)
• Service Lights (wiring by others)
ost Control
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