Table 2
Additional refrigerant charge amount Indoor unit
Additional refrigerant charge amount
kg/HP
Table 3
Pipe dia. at liquid side
mm
Additional refrigerant amount/1m
kg/m
Charging of refrigerant
• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the
liquid side.
• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and
gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas
side. In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.
• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.
135-EN
1117101201-3 EN.indd 68
1117101201-3 EN.indd 68
Air to Air Heat
Standard
Fresh Air Intake
Hot Water
exchanger with
Indoor unit
Indoor Unit
Module
DX-coil
0.4
0.2
0.2
0
6.4
9.5
12.7
15.9
19.0
Ø
Ø
Ø
Ø
Ø
Ø
0.025
0.055
0.105
0.160
0.250
Full opening of the valve
Open the valves of the outdoor unit fully.
MAP080
MAP100
MAP120
22.2
Packed valve
0.350
Using a 4mm-hexagonal wrench,
fully open the valve rods.
Liquid side
Balance packed valve
Balance pipe
Using a 4mm-hexagonal wrench, fully open the valve rods.
Balance valve
Using a wrench, turn it counterclockwise by 90° until it hits the stopper.
(Full open)
Gas side
– 68 –
MAP140
MAP160
MAP180
MAP200
MAP220
Ball valve
Using a flathead screwdriver, turn it counterclockwise by 90° until it
hits the stopper. (Full open)
Position of screwdriver slot
Service
Fully closed
Fully opened
port
Valve unit
Using flathead
screwdriver, turn it
counterclockwise by
(1)
90° until it hits the
Slot
stopper. (Full open)
* When opened fully, do not apply excessive
(2)
torque after the screwdriver hits the
Flare nut
stopper; otherwise a problem may be
caused on the valve. (5 N•m or less)
Fully closed
Fully opened
136-EN
8/8/2559 BE 3:49 PM
8/8/2559 BE 3:49 PM