Installation Manual

INSTALLATION INSTUCTIONS INSTALLATION INSTUCTIONS
P23 OF 36 P24 OF 36
VACUUM AND LEAKAGE CHECK
Evacuate the pipes between indoor and outdoor units, using vacuum pump and manifold/gauge set, to a
minimum of 500 microns (service valves remain front seated). Hold for 30 minutes to check if the vacuum level is
maintained. Using dry nitrogen or other leakage detection tool for leak checking. Be certain there is no pressure
in the system when repairing a leak.
Vacuum and Check Leakage before Releasing Refrigerant from Outdoor Unit to Indoor Unit
VACUUM REFRIGERANT PIPES
Service valve
Hexagon
Allen wrench
VACUUM
Humid air left inside the refrigerant circuit can
cause compressor malfunction and failure.
After having connected the indoor and outdoor
units, remove the air and humidity from the
refrigerant circuit using a vacuum pump.
1) Unscrew and remove the caps from the
2-way and 3-way valves.
2) Unscrew and remove the cap from the
service valve.
3) Connect the vacuum pump hose to the
service valve.
4) Operate the vacuum pump for 10-15
minutes until an absolute vacuum of 500
micron has been reached.
5) With the vacuum pump still in operation,
close the low-pressure knob on the vacuum
pump coupling.
Stop the vacuum pump.
6) Open the 2-way valve by 1/4 turn and then
close it after 10 seconds. Check all the
joints for leaks using liquid soap or an
electronic leak device.
7) Turn the body of the 2-way and 3-way
valves. Disconnect the vacuum pump hose.
8) Replace and tighten all the caps on the
valves.
Vacuum pump
INDOOR UNIT
Refrigerant fluid direction of flow
3-way valve
Service
inlet
(2) Turn
(8) Secure
Valve cap
(7) Turn to open fully
(2) Turn
(8) Secure
Connect to the
indoor unit
(8) Secure
(2) Turn
2-way valve
(6) Open by 1/4 turn
(7) Turn to open
fully
Valve cap
3-way valve
Blank cap
Refrigerant pipe
Outdoor unit
Cap
Service hose
with valve core
Compound pressure gauge
Gauge manifold
Pressure gauge
High pressure
side valve
(closed)
Service hose
Vacuum pump
Service hose
Low pressure
side valve
-100 kPa
-76cm.Hg
-1 bar
(For a description of how to use the
gauge manifold, refer to the gauge
manifold operation manual.)
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INSTALLATION OF ACCESSORIES
CONNECT REFRIGERANT PIPES
* Use factory-recommended components, as briefly
illustrated below.
* Cover line set in a sequence, either from indoor to
outdoor, or the other way.
* Secure line set covers onto the wall using factory-
recommended accessories.
Not to damage line sets.
Seal Copper Line Set/Wire Cable/Drain
Hose Line Combination:
LINE SET COVERS
OUTDOOR UNIT FOOT RISER OR BRACKETS
A
B
Model
BRKT-0918-SC1
BRKT -SC1-1860
A B
LBs
Btu/h
CapacitySize(Inch)
17.7
21.7
15.4
18.3
320
360
09K-18K
18K-60K
* Made of stainless steel.
Model
BRKT-0918-ST1
BRKT -ST1-1860
A B
LBs
Btu/h
CapacitySize(Inch)
17.7
21.7
15.4
18.3
320
360
09K-18K
18K-60K
A
B
C
D
Model
RIST-0918-PVC
RIST-1860-PVC
A B
C
LBs
Btu/h
CapacitySize(Inch)
14.2
17.7
3.7 3.1
3.7 3.1
220
260
09K-18K
18K-60K
D
4.1
4.1
A
B
RIST-XXXX-PVC
Foot Riser
Accessories: End Caps (Optional)
* Shock-proof PVC, Weatherproof & UV resistant.
* Supplied with fastening screws and anchor bolts.
* Easy to install.
* The "honeycomb" structure acts as an anti-vibration
& humming absorption for a quite operation.
* Made of steel.
* Coated with weatherproof polyester powder.
BRKT-XXXX-SC1
BRKT-XXXX-ST1
NOT TO CROSS-WIRE & NOT TO CROSS PIPE
Indoor Unit E
1/4" 3/8"
Indoor Unit D
1/4" 3/8"
Indoor Unit C
1/4" 1/2"
Indoor Unit B
1/4" 1/2"
Indoor Unit A
1/4" 5/8"
Service Valves
for All
Indoor Units
Adaptors for
outdoor valve
or indoor
connections,
if needed.
DO NOT cross any wiring or any refrigerant piping
between any 2+ zones.