8
The water-cooled HEPAir system requires cooling water to be piped to the unit for proper
operation. The cooling water absorbs the refrigerant heat through the unit’s water-cooled
condenser coil. Warm water is then directed out of the unit back to the cooling water system or
to a drain.
IMPORTANT
The air exhaust from the condenser fan on air-cooled units is hot and will be 25 to 35 degrees F
(15
– 18 degrees C) above the entering temperature. This may cause overheating problems in the
summer months, especially with high humidity. Exhaust the hot air to the outside. In the winter,
this heated air can help to heat the surrounding space.
Standard Specifications
NOTE: Design and specifications are subject to change without notice.
The HEPAir Unit Contains
✓
A thermal expansion valve to control the flow of refrigerant into the evaporator coil
✓
A manual reset high pressure switch to protect the system from high pressures
✓
The unit uses only R-134a refrigerant
✓
A built-in condensate drain trap. (no external trap is required)
✓
A hot gas bypass valve for coil lat adjustment, as required (factory set)
The HEPAir
60Hz models
meets or exceeds its rated capacities for total BTU/H and CFM at
design conditions and external static pressures. Both the evaporator and condenser fans are
capable of rated CFM against the external static pressure imposed by recommended ductwork.
Both fans are motorized impeller plug fans, statically and dynamically balanced, and use
permanently lubricated, direct drive motors that require no maintenance.
All exterior framing of the HEPAir unit is powder coated 0.063” (1.6mm) gauge aluminum to
prevent rust and corrosion. All coils are aluminum or copper tubes with aluminum fins. The unit
uses an external drain to remove excess moisture and not reintroduce it into the conditioned or
ambient space. Removable, multiple access doors are provided to facilitate cleaning and
maintenance, duct connections, and access to components and wiring.
The condenser coils have pre-filters on the inlet to prevent dust and dirt from fouling the coils,
thereby reducing capacity. Each unit has multiple discharge outlets on both the evaporator and the
condenser coils to facilitate custom installations. Water-cooled units have copper straight tube
connections for both cooling water inlet and outlet.
Each unit is provided with pre-wired, 24v controls compatibility and tested for remote mounting.
Compressors are self-lubricating, permanently sealed, hermetic reciprocating type compressors,
with internal overload protection and capacitor start. Compressors are mounted on rubber-in-shear
isolators to reduce noise and vibration.
Electric power is supplied by a furnished power cord(s).