Sensors Mounted By Factory; Optional Accessories - Greenheck HRE-20 Installation, operationand Maintenance Manual

OPTIONAL ACCESSORIES

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 .
EF-A
TO
OUTSIDE
EXHAUST
BLOWER
OAF-P
OA
FROM
OUSTIDE
FILTER
28
EW-P
EAW
OAI OAAW
OAW-P
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
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
RAI
OAF-A
COOL HEAT
COIL COIL
SUPPLY
BLOWER
ACC
RAF-P
RA
FROM INSIDE
FILTER
TO INSIDE
OAD