506694-01
Issue 1720
Page 3 of 16
Shipping and Packing List
Check the unit for shipping damage. If damaged, or if parts
are missing, immediately contact the last shipping carrier.
1 — Assembled 13ACD unit
1 — Refrigerant flow control (RFC) kit (orifice) (see Table 3
for a complete list of available fixed orifice kits)
Torque Requirements
When servicing or repairing HVAC components, ensure
the fasteners and caps are appropriately tightened. Table
1 lists torque values for fasteners.
Parts
Recommended Torque
Service valve cap
8 ft. lb.
11 NM
Sheet metal screws
16 in. lb.
2 NM
Machine screws #10
28 in. lb.
2 NM
Compressor bolts
90 in. lb.
10 NM
Gauge port seal cap
8 ft. lb.
11 NM
Table 1. Torque Requirements
Operating Gauge Set and Service Valves
Using Manifold Gauge Set
When checking the system charge, only use a manifold
gauge set that features low-loss anti-blow back fittings.
Operating Service Valves
The liquid and vapor line service valves are used for
removing refrigerant, flushing, leak testing, evacuating,
checking charge and charging.
Each valve is equipped with a service port which has a
factory-installed valve core. Figure 2 provides information
on accessing and operating both angle and ball-type
service valves.
To prevent stripping of the various caps used, the
appropriately sized wrench should be used and fitted
snugly over the cap before tightening.
IMPORTANT
(VALVE STEM SHOWN
CLOSED) INSERT HEX
WRENCH HERE
SERVICE PORT CORE
SERVICE PORT
CAP
ANGLE-TYPE SERVICE VALVE
(FRONT-SEATED CLOSED)
TO OUTDOOR
UNIT
STEM
CAP
(VALVE STEM SHOWN
OPEN)
INSERT HEX WRENCH
HERE
TO INDOOR
UNIT
ANGLE-TYPE SERVICE VALVE
(BACK-SEATED OPENED)
BALL (SHOWN
CLOSED)
SERVICE PORT
CORE
TO INDOOR UNIT
TO OUTDOOR
UNIT
TO
OPEN
ROTATE STEM
COUNTERCLOCKWISE 90°.
TO
CLOSE
ROTATE STEM
CLOCKWISE 90°.
SERVICE PORT
SERVICE PORT
CAP
STEM CAP
VALVE
STEM
Operating Angle-Type
Service Valve:
1. Remove stem cap with an
appropriately sized wrench.
2. Use a service wrench with a
hex-head extension (3/16” for
liquid line valve sizes and 5/16”
for vapor line valve sizes) to back
the stem out counterclockwise as
far as it will go.
Operating Ball-Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use an appropriately sized wrenched to open. To open valve,
rotate stem counterclockwise 90°. To close rotate stem
clockwise 90°.
1
2
3
4
5
6
7
8
9
10
1112
1/12 TURN
To Access Service Port:
A service port cap protects the service port core from contamination and
serves as the primary leak seal.
1. Remove service port cap with an appropriately sized wrench.
2. Connect gauge set to service port.
3. When testing is completed, replace service port cap
and tighten as follows:
With torque wrench: Finger tighten and torque cap
per table 1.
Without torque wrench: Finger tighten and use an
appropriately sized wrench to turn an additional
1/6 turn clockwise.
1
2
3
4
5
6
7
8
9
10
1112
1/6 TURN
When service valve stem is
CLOSED
, the service port is
open to the line set and indoor
unit.
When service valve stem is
OPEN
, the service
port is open to line set, indoor and outdoor unit.
Reinstall Stem Cap:
Stem cap protects the valve stem from damage and serves as
the primary seal. Replace the stem cap and tighten as follows:
With Torque Wrench: Finger tighten and then torque
cap per table 1.
Without Torque Wrench: Finger tighten and use an
appropriately sized wrench to turn an additional
1/12 turn clockwise.
Figure 2. Operating Angle and Ball-Type Service Valves
