Greenheck Fan HEAT RECOVERY UNIT WITH EVAPORATIVE COOLING HRE-20 - Manual (Page 28)

28
OPTIONAL ACCESSORIES
RAI
RAF-P
RA
FILTER
OAAW
COOL
COIL
ACC
HEAT
COIL
OAF-A
OAD
SUPPLY
BLOWER
TO INSIDE
FROM INSIDE
EW-P
OAW-P
ENERGY WHEEL
EAW EF-A
OAI
OA
FILTER
OAF-P
TO
OUTSIDE
FROM
OUSTIDE
EXHAUST
BLOWER
Sensors Mounted by Factory
Factory mounted temperature, pressure, and current sensors are available in the locations indicated on the unit
diagram below . A list of available sensors is shown below . The specific sensors provided on a given unit are
labeled in the unit control center on the terminal strip . Sensors are wired to the terminal strip to make it easy for
the controls contractor to connect the Building Management System for monitoring purposes .
Pressure Sensors (analog or digital)
Drawing Labels Terminal Strip Labels
OAF-P OA/Supply Filter Pressure
OAW-P Outdoor Air Wheel Pressure
RAF-P RA/Exhaust Filter Pressure
EW-P Exhaust Wheel Pressure
Amp - Current Sensors (analog or digital)
Drawing Labels Terminal Strip Labels
OAF-P Supply Fan Amps
EF-A Exhaust Fan Amps
Temperature Sensors - 1K Ohm RTD
Drawing Labels Terminal Strip Labels
OAI OA/Supply Inlet Temp
OAAW OA After
ACC After Cooling Coil Temp
OAD Supply Discharge Temp
EAW Exhaust After Wheel Temp
RAI RA/Exhaust Inlet Temp