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8.2 Testing the refrigerant lines for leaks
Checking the refrigerant circuit for leaks
R32 is an air-displacing, non-toxic gas. Uncontrolled release of refrigerant may result in breathing difficulties and
asphyxiation.
Check the connections for refrigerant leaks
• All flared connections on the refrigerant lines between the indoor and outdoor unit.
• All soldered joints and screw connections on the refrigerant lines in the indoor and outdoor
8.3 Installation guide
1. Install 4 pieces shockproof rubber pad under the fit of the unit
2. If the unit works with a water tank, the vertical distance between the unit and the water tank should be less than
6 m. and the horizontal distance should be less than 20m
3. Connect the condensate drainage connector to the hole at the bottom sheet.
Accessories
Accessories inside the package as below table
No
1
2
3
Design of the buffer tank in the system
kW is the unit for cooling capacity, L is the unit for (G) minimum water flow volume in the formula. Comfortable
type air conditioner
G= cooling capacity×2.6L
Process type cooling
G= cooling capacity×7.4L
In certain occasion (especially in manufacture cooling process), for conforming the system water content requi-
rement, it's necessary to mount a tank equipping with a cut-off baffle at the system to avoid water short-circuit,
Please see the following schemes:
Minimum and maximum water flow rates:
Model
A-0732
A-0932
A-1332 A-1332-T
A-1732-T
Ethylene glycol solutions
Water and ethylene glycol solutions used as a thermal vector in the place of water reduce the performance va-
lues given in the following table.
0
0
Cpf
1
Cq
1
Cdp
1
CPF: correction factor refrigerant capacity
CQ: correction factor flow rate
CDP: correction factor pressure drop
During winter leaving the unit unused, please drain water out completely from unit if no antifreeze were charged
into pipeline, or keep power on (at standby or off status) and ensure that water is contained inside of unit.
Item
Instruction Manual
Condensate drainage connector
Shockproof rubber pads
Water flow (m3/h)
Nominal
0.85
1.4
1.7
2.1
Freezing point
-5
-10
Ethylene glycol percentage
12%
20%
0.98
0.97
1.02
1.04
1.07
1.11
Minimum
0.75
1.3
1.5
1.8
-15
-20
28%
35%
0.965
0.96
1.075
1.11
1.18
1.22
Quantity
1
2
4
Maximimum
1.25
2.0
2.4
2.8
-25
40%
0.955
1.14
1.24
85
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