Table of Contents
Advertisement
14
Always use a non-oxidizing brazing material for brazing the parts
and do not use flux. If not, oxidized film can cause clogging or
damage to the compressor unit and flux can harm the copper pip-
ing or refrigerant oil.
!
WARNING
When installing and moving the air conditioner to another site, be
sure to make recharge refrigerant after perfect evacuation.
• If a different refrigerant or air is mixed with the original refrigerant,
the refrigerant cycle may malfunction and the unit may be damaged.
• After selecting diameter of the refrigerant pipe to suit total ca-
pacity of the indoor unit connected after branching, use an ap-
propriate branch pipe set according to the pipe diameter of the
indoor unit and the installation pipe drawing.
INSTALLATION OF WATER PIPE
Water pipe system diagram
- The water pressure resistance of the water pipe system of this prod-
uct is 1.98MPa
- When the water pipe passes indoors, make sure to execute heat in-
sulation on the pipe so that water drops do not form on the outer side
of the water pipe.
- The size of the drain pipe must be equal to or larger than the diame-
ter of the connecting product.
Always install a trap so that the drained water does not back flush.
- Always install a strainer (50Mesh or above) at the entrance of the water
pipe. (When sand, trash, rusted pieces get mixed into the water supply, it
can cause problems to the product due to blocking)
If On/Off valve is applied, by interlocking with outside unit, it can save
the energy consumption of pump by blocking the water supply to the
outside unit not operating. Select appropriate valve and install on site
if necessary.
- Install a pressure gauge and temperature gauge at the inlet and outlet
of the water pipe.
- Flexible joints must be installed not to cause any leakage from the vi-
bration of pipes.
- Install a service port to clean the heat exchanger at the each end of
the water inlet and outlet.
- For the components of the water pipe system, always use compo-
nents above the designed water pressure.
Pressure gauge Temperature gauge
Water pipe
outlet
Gate valve
Service port
Water pipe
Inlet
Gate valve
Service port
!
CAUTION
Do not directly connect the drain outlet to the water pipe outlet.
(It can cause problems to the product.)
Water pipe connection
- The water pipe should be the same size of the connection on the
product or more.
- If necessary install the insulation material in the water pipe inlet/out-
let to prevent water drop, freeze and to save energy.
(Use the above 20mm thickness PE insulation material.)
- Tightly connect the socket to the water pipe refer to below table for
recommended specification.
(Too much torque may cause the damage of the facility.)
Strainer
Condensed
Drain line
water drain
Pipe thickness
Shear stress
Tensile stress
mm
inch
(kN)
(kgf)
(kN)
12.7
1/2
3.5
350
19.05
3/4
12
1200
25.4
1
11.2
1120
31.8
1 1/4
14.5
1450
38.1
1 1/2
16.5
1.7
50.8
2
21.5
2.2
13.5
DEVICE PROTECTION UNIT
Strainer on water pipe
To protect the water cooling type product, you must install a strainer
with 50 mesh or more on the heat water supply pipe.
If not installed, it can result in damage of heat exchanger by the follow-
ing situation.
1
Heat water supply within the plate type heat exchanger is com-
posed of multiple small paths.
2
If you do not use a strainer with 50 mesh or more, alien particles
can partially block the water paths.
3
When running the heater, the plate type heat exchanger plays the
role of the evaporator, and at this time, the temperature of the
coolant side drops to drop the temperature of the heat water sup-
ply, which can result in icing point in the water paths.
4
And as the heating process progresses, the water paths can be par-
tially frozen to lead to damage in plate type heat exchanger.
5
As a result of the damage of the heat exchanger from the freezing,
the coolant side and the heat water source side will be mixed to
make the product unusable.
1. Pollution of
Heat source
Heat Source
Refrigerant
Water
Head loss of strainer on water pipe
60
50
45
30
15
0
0
30
60
90
120
150
96
I/min
ARWB100LAS4
Upper graph is a theoretical value for selection and it may be different
according to specification of strainer.
Bending
Torque
moment
(N . m)
(kgf . m)
(N . m)
(kgf)
2.5
250
20
23
5
2.5
250
20
2
115
4
400
45
4.5
155
6.5
650
87.5
8.75
265
9.5
0.95
155
16
350
1.4
255
26
600
Water pipe outlet
Water pipe
connection
Water pipe inlet
2. Partially frozen
3. Damage
: Suggestion range
: Allowed range
60
50
45
30
15
0
0
60
120
180
240
192
I/min
ARWB200LAS4
15
(kgf . m)
3.5
11.5
15.5
26.5
35.5
61
300
Hide quick links:
Advertisement
Table of Contents
