– 12 –
Final Tubing Check
IMPORTANT:
Check to be certain factory tubing on both indoor and
outdoor unit has not shifted during shipment. Ensure
tubes are not rubbing against each other or any sheet
metal. Pay close attention to feeder rubes, making sure
wire ties on feeder tubes are secure and tight.
Triple Evacuation Method chart
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
RELEASE CHARGE INTO SYSTEM
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACCUM)
Open service valves
Open or close the valve.
▼
Liquid side
Open the valve with a
0.16
”
(4 mm)
hexagon wrench.
▼
Gas side
Valve unit
Using a straight blade
screwdriver, turn it 90°
counter clockwise until
the valve is fully open
(against the stop).
Charge orifice
Handle position
Flare nut
Fully closed
Stop pin
Main stopper
Fully opened
• While the valve is fully opened, after the screwdriver
has reached the stopper, do not apply torque
exceeding 4 ft•lbs (5 N•m). Applying excessive
torque may damage the valve.
Valve handling precautions
• Open the valve stem until it reaches the stop.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Valve size
Ø3/8” (9.5 mm)
24 - 31 ft•lbs (33 - 42 N•m)
Ø5/8” (15.9 mm)
15 - 18 ft•lbs (20 - 25 N•m)
Charge port
10 - 13 ft•lbs (14 - 18 N•m)
23-EN
24-EN
EN
7
Electrical work
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
• The unit cabinet must have an uninterrupted or
unbroken ground to minimize personal injury if an
electrical fault should occur. The ground may consist
of electrical wire or metal conduit when installed in
accordance with existing electrical codes.
• The appliance shall be installed in accordance with
national wiring regulations.
• Before performing service or maintenance, be sure
main power switch is turned OFF.
CAUTION
All wiring and connections must comply with NEC, CEC,
local codes.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage
or improper operation.
• Unit failure as a result of operation on improper line
voltage or excessive phase imbalance constitutes
abuse and may cause damage to electrical
components.
• Wrong wiring may cause a burn-out of some electrical
parts.
• Do not damage or scratch the conductive core or
inner insulator of the power and inter-connecting
wires when peeling them.
Electrical control box
Field wiring
terminal
blocks
Banding
band
Piping knockout
Front panel
Conduit connection
holes
Front pipe cover
Field wiring
The dashed lines show field wiring.
• System interconnection wire size must be AWG16.
• Breaker must have a capacity specified in the
following table.
• All wiring must comply with local electric codes and
NEC (National Electric Code) or CEC (Canadian
Electric Code).
Model RAV-
SP302, 362, 422, 482
Power supply
208/230V, 60 Hz
MCA
30A
MOCP (MAX Fuse/CB)
40A
Breaker
32A
System interconnection wires
AWG16
Field power supply wires
AWG10
MCA = Minimum Circuit Amps
MOCP =Maximum Over Protection Device Amps.
• Connect the system interconnection (indoor to
outdoor) wires to the identical terminal numbers on
the terminal block of each unit.
Incorrect connection may cause a failure.
1. With the front panel removed the electrical control
box is exposed at the top right corner of the unit.
2. Terminate the field wiring conduit (if used) at the
conduit connection holes provided.
3. Route the field power wires and the system
interconnection wires as shown on the following
pages. Terminate the wires at field wiring terminal
blocks located immediately below the electrical
control box.
(Field power
supply)
Remote
controller
Input
power
208/230V~,
60 Hz
(System
interconnection wires)
circuit breaker
Outdoor unit
Indoor unit
ground
L
1
L
1
L
1
L
2
L
2
L
2
S
S
Pump down process
1. Turn off the Air Conditioner system.
2. Connect the charge hose from the manifold valve to
the service port of the packed valve at gas side.
3. Turn on the Air Conditioner system in cooling
operation more than 10 minutes.
4. Check the operating pressure of the system should
be normal value.
(Ref. with product specification)
5. Release the valve rod cap of both service valves.
6. Use the Hexagon wrench to turning the valve rod of
Liquid side fully close.
(*Make sure no entering air into the system)
7. Continue operate Air Conditioner system until and
the gauge of manifold dropped into the range of
0.5 - 0 kgf/cm
2
8. Use the Hexagon wrench to turning the valve rod of
Gas side fully close.
And turn off the Air Conditioner system immediately
thereafter.
9. Remove the gauge manifold from the service port of
the packed valve.
10. Securely tighten the valve rod cap to the both
service valves.
CAUTION
Should be check the compressor operating condition
while pumping down process. It must not any
abnormal sound, more vibration. It is abnormal
condition appears and must turn off the Air Conditioner
immediately.
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