Carrier RBM-Y0613FUL User Manual

– 14 –
Adding refrigerant
After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging
of refrigerant.
Calculation of additional refrigerant charge amount
Selection of installation place
• The cooling performance may decline considerably when total operating capacity of cooling indoor units is
less than 38 kBtu/h while ambient temperature is below 32°F (0°C).
L2
L3
a2 b2 c2 d2
L1
d1
a1 b2 c1
FS unit
Additional refrigerant charge
amount
Liquid pipe outer dia.
Additional refrigerant amount/1ft (lbs)
Ø1/4”
0.017
Outdoor unit capacity type
072 type
096 type
120 type
144 type
168 type
192 type
216 type
240 type
L1
Additional charge amount (lbs) =
=
=
=
{ (Lx × 0.017 lbs/ft)+(Ly × 0.037 lbs/ft)+(Lz × 0.071 lbs/ft) } × 1.3+ 27.5 (lbs)
{ ((a2+d2) × 0.017 lbs)+((L3+a1+b1+c1+d1+b2+c2) × 0.037 lbs)+(L1+L2) × 0.071 lbs } × 1.3+27.5 (lbs)
{ (30 × 0.017 lbs)+(150 × 0.037 lbs)+(135 × 0.071 lbs) } × 1.3+27.5 (lbs)
47.84 lbs
Lx : Actual total length of liquid pipe Ø1/4” (ft)
Ly : Actual total length of liquid pipe Ø3/8” (ft)
Lz : Actual total length of liquid pipe Ø1/2” (ft)
Ø1/2": 90ft L2 Ø1/2": 45ft L3 Ø3/8":30ft
5.5
20.9
27.5
5.5
23.1
30.8
34.1
37.4
072 type
096 type
120 type
072 type
096 type
096 type
120 type
120 type
—
—
—
072 type
072 type
096 type
096 type
120 type
Adjustment amount of refrigerant
(lbs)
Combined outdoor units
Ø3/8”
0.037
Ø1/2”
0.071
Ø5/8”
0.108
Ø3/4”
0.168
Actual length of liquid
pipe
(lbs)
= ×× 1.3 +
Additional refrigerant charge
amount per liquid pipe 1ft
[Table 3]
Adjustment amount of
refrigerant
[Table 4]
Table 3
Table 4
Example:
(120 type)
a1 Ø1/4": 30ft b1 Ø3/8": 30ft c1 Ø1/4": 15ft d1 Ø1/4": 15ft
a2 Ø1/4": 15ft b2 Ø3/8": 15ft c2 Ø1/4": 15ft d2 Ø1/4": 15ft

Carrier RBM-Y0613FUL Specifications

General

Brand	Carrier
Model	RBM-Y0613FUL
Category	Air Conditioner
Language	English