OPERATING INSTALLATION MANUAL FOR AHU-KIT UNIT
4
3 Preparations for Installation
3.1
Before Installation
Notes: Product graphics are only for reference. Please refer to actual products.
Unspecified measure unit is mm.
①
This equipment is designed for R410A system, and the designed working pressure is 4.2
MPa or 42 bar.
②
Precautions for R410A:
a).The refrigerant requires strict cautions for keeping the system clean, dry and tight.
—Clean and dry
：
Foreign materials (including mineral oils or moisture)should be prevented
from getting mixed into the system.
—Tight
：
Read this manual carefully and follow these procedures correctly.
b).Since R410A is a mixed refrigerant, the required additional refrigerant must be charged
in its liquid state. ( If the refrigerant is in state of gas, its composition changes and the
system will not work properly).
c).The connected air handling units must have heat exchangers designed exclusively for
R410A
．
③
Never use this appliance under inflammable and explosive gas.
④
For the following items, take special care during construction and check after installation
is finished:
Tick
√ when checked
□
Are the thermistors fixed firmly?
Thermistor may come loose.
□
Is the capacity code setted correctly?
The performance of system may not achiev
e it’s requirement.
□
Is the control box fixed firmly?
The unit may drop, vibrate or make noise.
□
Do electrical connections comply with specifications?
The unit may malfunction or components may burn out.
□
Are wiring and piping correct?
The unit may malfunction or components may burn out.
□
Is the unit safely grounded?
Dangerous at electric leakage.
3.2 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No.
Name
Appearance
Quantity
1
Magnetic ring
1
2
Swell screw
4
