OA
2
2
0.75mm 500m RVVP-0.75mmx 2
Model (indoor unit)
Room Name
E.g.: Indoor unit (A) of the
first system on second floor
is recorded as: 2F 1A.
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.
FILL THE NAME OF CONNECTED SYSTEM
CAUTION ON REFRIGERANT LEAKAGE
This air conditioner adopts R22 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. R22 critical
thickness:
3
0.3 [ kg/m ]
Outdoor unit
Indoor unit
Room full of leaking refrigerant
(All the refrigerant has leaked)
Calculate the critical thickness through following
steps, and take necessary actions.
Total refrigerant volume= refrigerant volume when
delivered(13[kg])+superaddition
3
2. Calculate the indoor cubage (B[m ]) (as the
minimum cubage)
1. Install mechanical ventilator to reduce the refrigerant
thickness under critical level. (ventilate regularly)
2. Install leakage detector alarming device related to
mechanical ventilator if you can not regularly
ventilate.
1. Calculate the sum of the charge volume (A[kg])
3. Calculate the refrigerant thickness
A [ kg]
3
B [ m ]
3
Critical thickness
0.3 [
kg/m ]
Countermeasure against overhigh thickness
b.
Leakage detector alarming device
related to mechanical ventilator
Indoor unit
(Leakage detector alarming device should
be installed in places easily keeping refrigerant)
a.
Ventilation
peristome
The owner's manuals of indoor unit and outdoor
unit and Service manual must be turned over to
the customer.
TURN OVER TO CUSTOMER
Particularize the contents in the owner's manual
to the customers.
Dimension and the quantity of electric wire
Name
Size
Signal wire
of indoor/
outdoor unit
Type
2-core
CAUTION
Signal wire of indoor/outdoor unit and wiring
of wire controller belong to low voltage circuit,
which should not contact power cord with high
voltage.
1. Signal wire of indoor/outdoor unit adopts 2-core shielded
wire which has polarity. For least interference, the closed
ends of shield wire should be connected continuously and
the shielding layer should be connected to the end E on
outdoor terminal block.
3. The controlling between indoor and outdoor units is
realized by RS485 communication, and the address is
set while installation.
2. 5-core shield wire is used for wire controller (terminals
A, B, C, D and E)
Summary of Contents for MDV-D Series
Page 12: ......
