Carrier WeatherMaster 50HCQ04-12 Service And Maintenance Instructions page 13

Single package rooftop heat pump/electric heat with puron (r-410a) refrigerant
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CAPILLARY TUBE
DIAPHRAGM
PUSHRODS
FEEDER TUBES
INLET
COIL
OUTLET
NEEDLE
VALVE
SPRING
DISTRIBUTOR
BULB
EXTERNAL EQUALIZER TUBE
Fig. 17 — Thermostatic Expansion Valve (TXV) Operation
CHECK VALVE CLOSED
CHECK VALVE OPEN
Fig. 18 — Thermostatic Expansion Valve (TXV) with Bypass
13

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