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HEATING/COOLING ASHRAE CYCLE
[COMPANY NAME]
DRAWN
CHECKED
DATE
DRAWING NO.
SWITCH
OPEN
CLOSE
N.O.
NORMALLY OPEN
COIL VALVE
SOLENOID
AIR VALVE
N.C
N.O
OUTSIDE &
RETURN AIR
DAMPER
MOTOR
\ / \ / \ / \ / \ /
STEAM
WATER
EXHAUST
TC
PRESSURE
REDUCING
VALVE SET
PRESSURE/ELECTRIC
ELECTRIC STEP CONTROLLER
FOR ELECTRIC HEAT COIL
CONTROL AIR
RESTRICTOR TEE
MODULATING
CAPILLARY
THERMOSTAT
LOWER LIMIT
ELEMENT IN UNIT
DISCHARGE