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Model ERCH-HP Energy Recovery Unit
Models and Capacities
This unit is manufactured in four different platform sizes;
20, 45, 55 and 90. Each platform has multiple options
for heating and cooling capacities.
All 4, 5 and 6 ton capacity units have a single scroll
type compressor and all other units have two scroll type
compressors and use a split airside heat pump coil.
Heat Pump Capacity
Unit Size Tons
ERCH-HP 20 4, 5, 6
ERCH-HP 45 8, 10, 12.5, 15
ERCH-HP 55 15, 17.5, 20
ERCH-HP 90 20, 25, 30
Product Overview
This unit brings in fresh, outdoor air and removes
stale exhaust air from the building. The intake and
exhaust airstreams move through the unit in opposite
directions in separate passages, and each airstream
passes through an energy wheel. In cooling mode, the
energy wheel removes both heat and moisture from
the incoming airstream and rejects it into the exhaust
airstream. In heating mode, the energy wheel removes
heat and humidity from the exhaust air and rejects
it into the intake air, thus reclaiming energy already
expended to heat the building air.
In addition to the energy wheel, this unit incorporates
a packaged water source heat pump The heat pump
system comes from the factory fully-charged with
refrigerant and is ready for connection to a water source
upon arrival.
For purposes of providing temporary emergency heat,
an optional secondary heating source such as indirect
gas furnace or electric heaters may also be installed.
The smaller tonnage units (4-6 tons) contain a single
compressor, allowing for one stage of cooling. Larger
units (8-30 tons) come standard with two compressors
and a split airside coil. This allows for staging of
compressors to meet a wider range of outdoor air loads
while reducing the amount of cycles per compressor.
Simply put, this unit preconditions the outdoor air to
save money on heating and cooling costs and then
provides supplemental heating and cooling by means
of a highly efficient heat pump.
Coaxial
Refrigerant-to-Water
Heat Exchanger
Heat Pump Module
(component locations
will vary)
Heat Pump
Compressor(s)
Supply Air
Motor & Blower
Reheat
Coil
Heat Pump
Airside Heating
and Cooling Coil
Energy Wheel
Cassette
Filters
Outdoor
Air Intake