Lennox Diplomat 10HP12, Информация

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Page 8
OUTDOOR
COIL
10HP COOLING CYCLE (SHOWING GAUGE MANIFOLD CONNECTIONS)
DEFROST THERMOSTAT
EXPANSION VALVE
FILTER / DRIER
WITH INTERNAL CHECK VALVE
STRAINER
TO
R–22
DRUM
SUCTION
HIGH
PRESSURE
COMPRESSOR
REVERSING
VALVE
VAPOR
LINE
VALVE
MUFFLER
CHECK
VALVE
NOTE – ARROWS INDICATE DIRECTION OF
REFRIGERANT FLOW
SERVICE
PORT
SUCTION
FIGURE 16
INDOOR
UNIT
OUTDOOR UNIT
LIQUID
LINE
SERVICE
PORT
INDOOR
COIL
THERMOMETER
WELL
INTERNAL
COMPRESSOR
LIMIT
EXPANSION
VALVE OR
RFCIII
SUCTION
MUFFLER
ACCUMULATOR
10HP12, 48 AND
60 ONLY
10HP12
ONLY
OUTDOOR
COIL
10HP HEATING CYCLE (SHOWING GAUGE MANIFOLD CONNECTIONS)
DEFROST THERMOSTAT
EXPANSION
VALVE
FILTER / DRIER
WITH INTERNAL CHECK VALVE
STRAINER
TO
R–22
DRUM
HIGH
PRESSURE
COMPRESSOR
REVERSING
VALVE
VAPOR
LINE
VALVE
MUFFLER
CHECK
VALVE
NOTE – ARROWS INDICATE DIRECTION OF
REFRIGERANT FLOW
SERVICE
PORT
SUCTION
FIGURE 17
INDOOR
UNIT
OUTDOOR UNIT
LIQUID
LINE
SERVICE
PORT
INDOOR
COIL
THERMOMETER WELL
INTERNAL
COMPRESSOR
LIMIT
EXPANSION
VALVE OR RFCIII
SUCTION
SUCTION
MUFFLER
10HP12
ONLY
ACCUMULATOR
10HP12, 48 AND
60 ONLY
A – Service Valves
The liquid line and vapor line service valves and gauge
ports are accessible from outside of the unit. Full
service liquid and vapor line valves are used. See
figures 18 and 19. The service ports are used for leak
testing, evacuating, charging and checking charge.
1 – Liquid Line Service Valve
A full-service liquid line valve made by one of several
manufacturers may be used. All liquid line service
valves function the same way, differences are in
construction. Valves manufactured by Parker are
forged assemblies. Valves manufactured by Primore
are brazed together. Valves are not rebuildable. If a
valve has failed it must be replaced. The liquid line
service valve is illustrated in figure 18.
The valve is equipped with a service port. There is no
schrader valve installed in the liquid line service port. A
service port cap is supplied to seal off the port.
The liquid line service valve is a front and back seating
valve. When the valve is backseated the service port is
not pressurized. The service port cap can be removed
and gauge connections can be made.
CAUTION
The service port cap is used to seal the liquid line
service valve. Access to service port requires
backseating the service valve to isolate the
service port from the system. Failure to do so
will cause refrigerant leakage.