24
Installation manual
Fig.7-1
Fig.7-2
Turn on air pipe stop valve, liquid pipe stop valve, oil balance
valve and air balance valve totally. If the above valves do not
be turned on totally, the unit should be damaged.
Check whether the power phase sequence of outdoor unit is
correct.
All dial switch to indoor and outdoor unit have been set
according to the Technical Requirement of Product.
7.3 Fill the name of connected system
7.4 Caution on refrigerant leakage
7.5 Turn over to customer
To clearly identify the connected systems between two or
more indoor units and outdoor unit, select names for every
system and record them on the nameplate on the outdoor
electric control box cover.
Model(indoor unit)
Room Name
Eg: Indoor unit (A) of the
first system on second floor
is recorded as:-2F-1A
This air conditioner adopts R410A as refrigerant, which is
safe and noncombustible.
The room for air conditioner should be big enough that
refrigerant leakage can not reach the critical thickness.
Besides this, you can take some action on time.
Critical thickness-----the max thickness of Freon without
any harm to person. R410A critical thickness:0.3 [ kg/m
3
]
Outdoor unit
Indoor unit
Room full of leaking refrigerant
(All the refrigerant has leaked)
Fig.7-3
A [ kg]
B [ m
3
]
Countermeasure against overhigh thickness
Install mechanical ventilator to reduce the refrigerant
thickness under critical level. (ventilate regularly)
Install leakage detector alarming device related to
mechanical ventilator if you can not regularly ventilate.
≤
Critical thickness˖0.3 [kg/m
3
]
Indoor unit
OA
a:Ventilation peristome
b.
Leakage detector alarming device
related to mechanical ventilator
Be sure to deliver the Installation Manual of the indoor unit,
and the outdoor unit to the user.
Calculate the critical thickness through following steps,
and take necessary actions.
Calculate the sum of the charge volume (A[kg])
Total refrigerant volume=refrigerant volume when
delivered(nameplate)+superaddition
Calculate the indoor cubage (B[m
3
]) (as the minimum
cubage)
Calculate the refrigerant thickness.
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