Installation Of Outdoor Unit; Connection Of Pipes - Haier HSU109VHG-G Service Manual

Connecting the indoor/outdoor electric Cable
Removing the wiring cover
Remove terminal cover at right bottom corner of indoor unit, then take off
wiring cover by removing its screws.
When connecting the cable after installing the indoor unit
1. Insert the cable from the outside into the unit through the same
hole that has the interconnecting tubing.
2. Pull out the cable on the front side, and connect the cable
making a loop.
When connecting the cable before installing the indoor unit
Insert the cord from the back side of the unit, then pull it out on the front side.
Fasten the unit wire harness to the conduit holder using the lock nut.
Position the conduit holder to its original state using screw.
Note When connecting the cable, con rm the terminal number of indoor and
outdoor units carefully. If wiring is not correct, the unit will not operate
properly and could cause a defect.
Control wiring :
4 wire 18AWG²
Indoor unit A
Control wiring :
4 wire 18AWG²
Indoor unit B
HSU218VHG-W
3 Wire with ground 12AWG
Power cable:
1. If the supply cord is damaged, it must be replaced by the manufacturer or its
service agen. The type of connecting wire is H05RN-For H07RN-F.
2. If the fuse on PC board is broken please change it with the type of
T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor), the fuse must be
changed by an authorized servicer.
3. The wiring method should confirm to local electrical codes.
4. Use an HVACR circuit breaker or time delay fuse.
Outdoor unit
Install according to the instructions on the 1st page of this manual
When bending the interconnect tubing, ensure the radius is at least 1 1/4" to 1 3/4",
30mm to 40mm to ensure against crushing the tubing.
Connecting the pipe of gas side rst makes working easier.
Ensure the interconnecting tubing is approved for R410A.
Spanner
Ensure that no dirt or debris enters the tubing. The standard tubing length is 25ft/7.6m.
If a different length is required, adjust the refrigerant amount by 1/4 oz/ft, 20 g/M for the
9k, 12k and 18k models. For the 24k model, adjust by 1/2 oz/ft, 40 g/M.Before opening
the service valves, evacuate the interconnecting tubing and indoor unit. Follow the
instruction in section 5 on page 4.
CAUTION
Outdoor unit
Outdoor unit
{
Cutting and Flaring Work of Piping
Pipe cutting is carried out with a pipe cutter and burs must be removed.
After inserting the are nut, aring work is carried out.
Outdoor unit
Flare tooling die
68

Installation of Outdoor Unit

Connection of pipes

Forced fastening without careful centering may
Half union
Flare nut
damage the threads and cause a leakage of gas.
Pipe Diameter( )
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8") 42 N.m/30.1Ft.lbs
Gas side 12.7mm(1/2")
Torque wrench
Gas side 15.88mm(5/8")
Indoor unit
B1
A1
B2
Indoor unit
A2
A2
Outdoor unit
Max.Elevation: A1 max =15m/50ft A2 max =15m/50ft
Indoor unit
In case the elevation B is more than 5m,
oil trap shoud be installed every 5~7m
Oil trap
B
Max. Length: B1 max = 20m/65ft B2 max = 20m/65ft
Indoor unit
In case the pipe total length (B1+B2) is more than
20m/65ft, the refrigerant should be charged, according
to 20 g/m.
Flare tool for R410A
Clutch-type clutch-type(Rigid-type) Wing-nut type (Imperial-type)
1.0~1.5mm
0~0.5mm
A
0~1/51 inch 3/76 ~1/17 inch
1.Cut pipe
3.Insert the are nut
C r o e r t c
Lean Damage of are
Installation
Fastening torque
18N.m/13.3Ft.lbs
55N.m/40.6Ft.lbs
60 N.m/44.3Ft.lbs
Indoor unit
B1
B1
Outdoor unit
Indoor unit
A1
A3
Indoor unit
B2
Indoor unit
B2
A3 max =15m/50ft
(B1+B2) max = 30m/100ft
Conventional are tool
1.5~2.0mm
1/17 ~1/8 inch
2.Remove burs
4.Flare pipe
n I c r o e r t c
Partial Too outside
Crack
Domestic Air Conditioner