Page 9
To Close Service Valve:
1 − Remove the stem cap with an adjustable wrench.
2 − Using the adjustable wrench to keep the valve station-
ary, use a service wrench with a hex−head extension to
turn the stem clockwise to seat the valve. Tighten the
stem firmly.
NOTE − Use a 3/16" hex head extension for 3/8" line
sizes or a 5/16" extension for large line sizes.
3 − Replace the stem cap. Tighten finger tight, then tighten an
additional 1/6 turn.
NOTE − Stem cap must be replaced to help prevent
valve leakage.
Service Valve
(Valve Closed)
Schrader valve open
to line set when valve is
closed (front seated)
service
port
service
port cap
stem cap
insert hex
wrench here
(valve front seated)
to outdoor coil
to indoor coil
Service Valve
(Valve Open)
Schrader
valve
service
port
service port
cap
insert hex
wrench here
to indoor coil
to outdoor coil
stem cap
FIGURE 11
Vapor Line Ball Valve – 5 Ton Units Only
Vapor line service valves function the same way as the other
valves, the difference is in the construction. A ball valve is
illustrated in figure 12.
The ball valve is equipped with a service port with a factory−
installed Schrader valve. A service port cap protects the
Schrader valve from contamination and assures a leak−free
seal.
Ball Valve (Valve Open)
FIGURE 12
Schrader valve
service port
service port
cap
stem cap
stem
Use Adjustable Wrench
To open: rotate Stem Clockwise 90°.
To close: rotate Stem Counter-clockwise 90°.
ball
(shown open)
to outdoor coil
to indoor coil
IV − CHARGING
WARNING
R−410A refrigerant can be harmful if it is inhaled.
R−410A refrigerant must be used and recovered re-
sponsibly.
Failure to follow this warning may result in personal
injury or death.
A − Leak Testing
After the line set has been connected to the indoor and out-
door units, check the line set connections and indoor unit
for leaks.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting
of (CFC’s and HFC’s) as of July 1, 1992. Approved
methods of recovery, recycling or reclaiming must be
followed. Fines and/or incarceration my be levied for
noncompliance.
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