INST
ALLER'S
INSTRUCTION
INST
ALLER'S
INSTRUCTION
P27 OF 38
P28 OF 38
CONNECT REFRIGERANT PIPES BETWEEN INDOOR AND OUTDOOR UNITS
Remove the wiring diagram cover where also the
handle for moving unit is located.
Following the wiring diagrams on the unit or the wiring
diagram manual that comes with the indoor unit to
get familiar with
wiring and make sure
. If there is any discrepancy, always
use the
.
the
everything
is correct
diagram that is attached to the units
Connect wires between indoor unit and outdoor
unit-power wire from outdoor to Indoor, control
wires from Indoor unit to outdoor unit. Pass wire
through certified wire pipes, harnesses and
knockouts. Enough length shall be left for future
service. Only copper wire is allowed.
Bring in line-voltage power input wires from circuit
breaker to line-voltage wire terminal block at
outdoor unit. Pass through certified wire pipes,
harnesses and knockouts. Enough length shall be
left for future service. Only copper wire is allowed.
Strictly follow NEC or state or local codes to select
wires, circuit breaker, conduits and to perform
installation work.
Disconnect switch box for outdoor unit
OUTDOOR WIRING: OUTDOOR-INDOOR UNIT & DISCONNECT SWITCH
BOX/CIRCUIT BREAKER/FUSE
WIRING OUTDOOR UNIT
PIPING AND WIRING SIZES
INSTALLATION-OUTDOOR UNIT
INSTALLATION & PICTURES-WALL MOUNT BRACKET FOR OUTDOOR UNIT(S)
(PART VARIES UPON MODELS/AVAILABILITY)
Select a secured location where the outdoor unit will be installed properly.
Orient the unit rear side (intake grill) towards wall and front side (discharge grill) away from wall.
For ground installation, use factory-provided riser and accessories. Not to bolt unit feet directly onto ground.
Riser or brackets shall be levelled at outdoor unit foot surfaces. Secure unit foot by tightening bolts, nuts and
anti-vibration pads.
(Actual unit/parts looking/installation may vary from the illustrated)
CONNECT WIRING BETWEEN OUTDOOR UNIT AND INDOOR UNIT
* Check the nameplate for rated electrical data. Connect unit to the correct electrical power source.
O
O
* Select power wire of proper type and size. Suggest to use UL approved 105 C/221 F multi-strand copper wire
for outdoor use. Refer to the following tables, for proper selection of wire gauge, size and circuit breaker.
Non-Metalic Power Whip for Outdoor Use
(Field-Supplied, Not Spliced and Not Knotted,
Water-Proof Sealed Tight, UL Approved)
Firstly, connect copper tubes at indoor unit. Bend
pipes by tools but not by hands. Extra length is
needed for future service.
REFRIGERANT PIPES:
For distance other than 25' between indoor and
horizontal venting condensing units, refer to the
following table for copper sizes.
Make sure the pipe section where is to be cut is
straight and smooth. Apply cutting blade straightly
perpendicular to the pipe surface. Don't cut too fast
or too hard. Turn and tighten the tube cutter slowly.
Remove residual left and de-bur at the cutting edge.
The cutting edge should be clear and clean and
smooth.
Running Interconnection Refrigerant Lines:
Use clean refrigeration grade of copper pipe only.
Keep the copper lines from kinking and transmitting
noise to walls, cabinets, etc. Pipe length not to exceed
150', elevation not to exceed 35. Insulate both the
liquid and gas copper lines with at least 3/8" thick
insulation tubes. Band and tape and secure refrigerant
lines. Support copper lines at proper distance apart to
keep tubes from sagging.
CUT REFRIGERANT PIPE:
Connect Copper Pipes-Flare/nut Connection at Both Indoor and Outdoor Units
Proper torque shall be applied to make good connection at female nut, flare and male nut, as recommended in
the following table. Too much torque may damage and break flare/nut seal. Too less torque may not ensure
good seal. ALWAYS use a pair of wrenches.
Flare Nut
1/4-3/8"
1/4-1/2"
1/2-3/4"
7/8-1 1/8"
Tightening Torque
25 Ft. LBs (350 Kgf.cm)
40 Ft. LBs (560 Kgf.cm)
60 Ft. LBs (840 Kgf.cm)
110Ft. LBs (1540 Kgf.cm)
Refrigerant Pipe Flare/Nut Connection Tightening Torque
Refrigerant Pipe Length and Height
CONNECT REFRIGERANT PIPES
In this case, put wet rag to protect valves or other components from being overheated. When using flux, rub the
tube surface using steel wool to shine and clean
dry
and
in order to keep contamination from entering the system.
Connect Copper Pipes-Sweat Connection
Refrigerant Valve and Pipe Size/Length
K
Btu/h
09
12
18
Valve Size
Liq, Gas
1/4", 3/8"
1/4", 3/8"
1/4", 1/2"
15-30ft
1/4", 3/8"
1/4", 3/8"
1/4", 1/2"
31-60ft
1/4", 3/8"
1/4", 3/8"
1/4", 1/2"
Line Sizes at Different Length
1,000 Btu/h
09
12
18
Height (Ft.)
3.82
3.6
3.8
Length (Ft.)
23
24.3
31.4
Cut too
hard
Cut too
hard/fast
Angle
Inclined
Twist to cut pipe
O
90
Bad cut
De-burring tool
Fixed
Need to properly
select dimensions A per D
Pipe flare
expander
Canter line
Canter line
Expander
Head
Copper line
Model Liquid/Gas
Line
Min/Max.Length/
+/-Elevation
Power Wire Min.
Disconnect Switch Box to
Outdoor Unit
Power/ Control Wire Min.
Outdoor to Indoor Unit
Recommended HVAC
Circuit Breaker/Fuse
AMP
(to Outdoor Unit)
09K
1/4" & 3/8"
15/70 /35/45
L/N/G, 115/1/60, 12AWG
N(1)/2/3/G, 115/1/60, 16AWG
20/30
12K
1/4" & 3/8"
15/75 /35/45
L/N/G, 115/1/60, 12AWG
N(1)/2/3/G, 115/1/60, 16AWG
20/30
18K
1/4" & 1/2"
15/100/50/60
L1/L2/G, 208-230/1/60, 10AWG N(1)/2/3/G, 208~230/1/60, 16AWG
20
24K
30K
36K
1/4" & 5/8"
1/4" & 5/8"
1/4" & 5/8"
15/100/50/60
15/125/50/60
15/125/50/60
L1/L2/G, 208-230/1/60, 10AWG
L1/L2/G, 208-230/1/60, 8AWG
L1/L2/G, 208-230/1/60, 8AWG
N(1)/2/3/G, 208~230/1/60, 16AWG
N(1)/2/3/G, 208~230/1/60, 16AWG
N(1)/2/3/G, 208~230/1/60, 16AWG
30
30
40
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
For ground installation,
it is recommended to use YMGI optional accessories like risers.