Page 10
3 - When testing is completed, replace service port cap
and tighten as follows:
• With Torque Wrench: Finger tighten and then tight-
en per table 3.
• Without Torque Wrench: Finger tighten and use an
appropriately sized wrench to turn an additional 1/6
turn clockwise as illustrated in gure 2.
To Open Liquid Line Service Valve:
1 - Remove stem cap with an adjustable wrench.
2 - Using service wrench and 5/16" hex head extension
if needed (part #49A71) back the stem out
counterclockwise until the valve stem just touches
the retaining ring.
3 - Replace stem cap. Tighten nger tight, then tighten
an additional 1/6 turn. Do not over torque.
Liquid And Suction Line Service Valve
(Valve Open)
Schrader
valve
service
port
service port
cap
insert hex
wrench here
to indoor coil
to outdoor coil
stem cap
Schrader valve open
to line set when valve
is closed (front seated)
service
port
service
port cap
stem cap
insert hex
wrench here
Liquid And Suction Line Service Valve
(Valve Closed)
(valve front seated)
to outdoor coil
to indoor coil
FIGURE 11
To Close Liquid Line Service Valve:
1 - Remove stem cap with an adjustable wrench.
2 - Using service wrench and 5/16" hex head extension
if needed (part #49A71), turn stem clockwise to seat
the valve. Tighten rmly.
3 - Replace stem cap. Tighten nger tight, then tighten
an additional 1/6 turn. Do not over torque.
Service (Ball) Valve
Some ELP units are equipped with a full service ball valve,
as shown in gure 12. One service port that contains a
valve core is present in this valve. A cap is also provided
to seal o the service port. The valve is not rebuildable so
it must always be replaced if failure has occurred.
Opening the Suction Line Service Valve
1 - Remove the stem cap with an adjustable wrench.
2 - Using a service wrench, turn the stem
counterclockwise for 1/4 of a turn.
3 - Replace the stem cap and tighten it rmly.
Closing the Suction Line Service Valve
1 - Remove the stem cap with an adjustable wrench.
2 - Using a service wrench, turn the stem clockwise for
1/4 of a turn.
3 - Replace the stem cap and tighten rmly.
SUCTION LINE (BALL TYPE) SERVICE VALVE
VALVE CORE
SERVICE PORT
STEM CAP
STEM
USE ADJUSTABLE WRENCH
ROTATE STEM CLOCKWISE 90
TO CLOSE
ROTATE STEM COUNTERCLOCKWISE 90
TO OPEN
BALL
(SHOWN OPEN)
FROM INDOOR COIL
TO COMPRESSOR
SERVICE PORT
CAP
FIGURE 12
III-START-UP
Use the following procedure prior to starting up the unit for
the rst time.
1 - Rotate fan to check for binding.
2 - Inspect all factory- and eld-installed wiring for
loose connections.
3 - Open the liquid line and suction line service valves
to release the refrigerant charge (contained in
outdoor unit) into the system.
4 - Replace the stem caps and secure nger tight, then
tighten an additional one-sixth (1/6) of a turn as
illustrated in gure 9.
5 - Check voltage supply at the disconnect switch. The
voltage must be within the range listed on the unit’s
nameplate. If not, do not start the equipment until
you have consulted the power company and the
voltage condition has been corrected.
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