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..

TO

OUTSIDE

FROM

OUSTIDE

EF-A

EXHAUST BLOWER

OAF-P

OA

FILTER

EAW

OAI

EW-P

ENERGY WHEEL

OAW-P

RAI

OAAW

COOL

HEAT

COIL

COIL

ACC

RAF-P

RA

FILTER

OAF-A

SUPPLY

BLOWER

FROM INSIDE

TO INSIDE

OAD

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

 

 

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Greenheck Fan HRE-20, 90, 55, 45 manual Sensors Mounted by Factory, Temperature Sensors 1K Ohm RTD

45, 55, 90, HRE-20 specifications

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