McQuay MDB075B Manual page 96

System Refrigerant Charge Level Guidelines
COOLING ONLY
Indoor
MDB075B MMC075B
MDB075B MMC075C
MDB100B MMC100B
MDB100B MMC100C
MDB125B MMC125B
MDB125C MMC125B
MDB150B2 MMC075B x 2
MDB150B2 MMC075C x 2
MDB150C2 MMC075B x 2
MDB150C2 MMC075C x 2
MDB150B1 MMC150C
MDB150C1 MMC150C
MDB200B2 MMC100B x 2
MDB200B2 MMC100C x 2
MDB250B2 MMC125B x 2
MDB300B3 MMC100B x 3
MDB300B3 MMC100C x 3
MDB350B3 MMC100B + MMC125B x 2
MDB350B3 MMC100C + MMC125B x 2
MDB400B4 MMC100B x 4
MDB400B4 MMC100C x 4
MDB450B3 MMC150C x 3
MDB500B4 MMC125B x 4
MDB600B4 MMC150C x 4
MDB750B5 MMC150C x 5
Remark:
With Scroll compressor and bi-flow TXV at the outdoor unit specification.
Additional Charge
Based on liquid pipe size per meter length:
Liquid Pipe Size, inch
1/4"
5/16"
3/8"
1/2"
5/8"
3/4"
7/8"
Note: Refer to the table of the Recommended Maximum Pipe Length.
Outdoor Liquid Pipe
1/2"
1/2"
5/8"
5/8"
5/8"
5/8"
1/2"
1/2"
1/2"
1/2"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
5/8"
Additional Charge, kg/meter
Gas Pipe
1"
1"
1-1/8"
1-1/8"
1-1/4"
1-1/4"
1"
1"
1"
1"
1-3/8"
1-3/8"
1-1/8"
1-1/8"
1-1/4"
1-1/8"
1-1/8"
1-1/8" & 1-1/4"
1-1/8" & 1-1/4"
1-1/8"
1-1/8"
1-3/8"
1-1/4"
1-3/8"
1-3/8"
0.02
0.04
0.05
0.10
0.17
0.26
0.37
95
Refrigerant Charge
CFM
(kg/7.5m pipe length)
2500 4.00
2500 4.50
3200 7.60
3200 7.00
4200 7.95
4200 7.80
4600 4.00 x 2
4600 4.50 x 2
4600 4.00 x 2
4600 4.50 x 2
4600 10.1
4600 8.8
6400 7.60 x 2
6400 7.00 x 2
8000 7.95 x 2
9000 7.60 x 3
9000 7.00 x 3
10500 7.60 + (7.95 x 2)
10500 7.00 + (7.95 x 2)
12000 7.60 x 4
12000 7.00 x 4
13500 10.10 x 3
15000 7.95 x 4
18000 10.10 x 4
22500 10.10 x 5