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12
HE-Series Indoor
ERV
1.2 AIRFLOW
FIGURE 1.2.0 AIRFLOW ORIENTATIONS
OVERVIEW
There are two different airflow options for the HE1.5XIN. They are:
u
HE1.5XINH
u
HE1.5XINV
The airflow configuration is indicated by digit 9 of the Configuration Code.
2.0 COMPONENT DESCRIPTIONS
2.1 CABINET
The cabinet for the HE1.5XIN is made of 20 gauge galvanized steel and has 1" thick high-
density, foil-backed insulation on the inside. Units are available in either single-wall or double-
wall construction. Doors are hinged and are fitted with stainless steel machine screws through
the faces to prevent accidental opening of the doors when the unit is in operation. Doors may be
completely removed by removing the hinge pins. All units are equipped with adjustable-height
leveling legs for purposes of leveling the unit. Duct flanges are provided at all four airstream
openings for connection of field-supplied ductwork.
2.2 ENTHALPIC CORES
All HE1.5XIN ERVs use a static-plate enthalpic core. The enthalpic cores transfer both latent and
sensible energies between the airstreams. Gasketing is pre-installed on the cores and must be
positioned to provide a proper air seal. For information on annual maintenance of the cores, see
Section 7.0 Maintenance in this manual.
2.3 FAN/MOTOR ASSEMBLIES
2.4 E-BOX
Every HE1.5XIN is equipped with what is known as an “E-Box.” High-voltage supply wiring and
low-voltage control wiring is all terminated here. If optional integrated programmable controls
are installed, an additional 24 VAC transformer is installed here to power both the controller and
its dedicated sensors.
There are two fan and motor assemblies in each ERV.
Low airflow can cause
fouling of the enthalpic
cores. The ERV must
never be operated without
clean filters in place and
minimum airflow must be
greater than 250 CFM per
full-sized core.
CAUTION
MODEL
DESCRIPTION OF DUCT CONNECTION CONFIGURATION
HE1.5XINH
Room Air [RA] and Outside Air [OA] enter on the same side of the unit.
HE1.5XINV
Room Air [RA] and Outside Air [OA] enter on opposite sides of the unit.
FA
OA
RA
EA
HEIN except 6x 8x, LE_IN
INH
FA
OA
EA
RA
HEIN except 6x 8x, LEIN
INV
