Samsung AJ020MCS3CH Installation Manual - page 19
19
English
Installation Pr
oc
edur
e
Once you have completed all the connections, check for
possible leaks using leak detector specifically designed for
HFC refrigerants.
Step 10 Adding refrigerant (R-410A)
Calculating the quantity of refrigerant to add
The quantity of additional refrigerant is variable according
to the installation situation. Thus, make sure the outdoor
unit situation before adding refrigerant.
If you install the excessive length of pipe, add additional
refrigerant as 0.22 oz per unit ft ; refer to the table below.
Refer to the Service Manual for more details on this
operation.
Model Name
Total connecting
pipe length (L)
Adding refrigerant
AJ७७७MCS७CH
(LT)
ft
ख़ߣߥߣߤ˙ϩ
Chargeless
क़ߣߥߣߤ˙ϩ
(LT- 131.2) ft x 0.22 oz
Charging the refrigerant under conditions of
liquid by using a liquid pipe
R410A is a mixed type of refrigerant. It is necessary for
recharging under conditions of liquid. When recharging
refrigerant from the refrigerant cylinder to the
equipment, follow the instructions below.
• Before recharging, check whether the cylinder has
a siphon or not. There are two ways to recharge the
refrigerant.
Cylinder with siphon
Cylinder without siphon
siphon
Charge the refrigerant standing
the cylinder upright.
Charge the refrigerant turning
the cylinder upside down.
NOTE
• If R410A refrigerant is charged with gas, the
composition of the charged refrigerant changes and
the characteristics of the equipment vary.
• During the measuring operation of refrigerant quantity
added use an electronic balance. If cylinder doesn’t
have syphon, upset it.
Step 11 Connecting the drain hose to
the outdoor unit
When heating, ice may accumulate. During the process of
defrosting, check if condensation draining is adequate.
For adequate draining, do the following :
1 Insert the drain plug into the drain hole on the
underside of the outdoor unit.
2 Connect the drain hose to the drain plug.
3 Ensure that condensation draining is adequate.