AHU-KIT
12
(2) Working Ambient Temp. Tmax=109
℉
(45 °C)
(3) Precautions for R410A:
(4) a).The refrigerant requires strict cautions for keeping the system clean, dry and tight.
(5)
—Clean and dry
：
Foreign materials (including mineral oils or moisture) should be
prevented from getting mixed into the system.
(6)
—Tight
：
Read this manual carefully and follow these procedures correctly.
(7) 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).
(8) The connected air handling units must have heat exchangers designed exclusively for
R410A
．
(9) Never use this appliance in a place with inflammable and explosive gas.
(10) For the following items, take special care during construction and check after installation
is finished:
Tick √ when checked
□
Are the temperature sensors fixed firmly?
Temperature sensor may come loose.
□
Is the capacity code set correctly?
System performance may not reach relevant requirements or will lead to reliability problem.
□
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 Location for Installation
Select an installation site where the following conditions are fulfilled and that meets your
customer’s approval.
(1) The EXV box can be installed inside and outside. The control box should be installed
inside.
(2) Do not install the EXV box in or on the outdoor unit.
(3) Do not put the option boxes in direct sunlight. Direct sunlight will increase the
Содержание GMV-N12U/A-T(U)
Страница 24: ...AHU KIT 21 Fig 4 1 2 3 Size of EXV box for GMV N192U A T U Unit mm in Fig 4 1 3...
Страница 45: ......
