General Data - LG MULTI F Engineering Manual
Multi-zone heat pump systems, 1.5 to 5 tons
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- Installation manual (361 pages) ,
- Engineering manual (224 pages) ,
- Install (9 pages)
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MULTI F MAX BD UNIT
General Data
Table 29: Multi F MAX BD Unit General Data.
Model Number
No. of Connectable Indoor Units
Max. Nominal Capacity / Port (Btu/h)
Connected Indoor Unit Capacity (Btu/h)
Max. Nominal Capacity / Branch Distribution Unit
(Btu/h)
Operation Temperature Range (°F DB)
Maximum Humidity
Unit Data
Refrigerant Type
Power Supply V, Ø, Hz
Power Input (W)
Rated Amps (A)
Dimensions W x H x D (in.)
Net Unit Weight (lbs.)
Shipping Weight (lbs.)
Communication / Connection (Power) Cables
From Outdoor Unit to Branch Distribution Unit
(Qty. x AWG)
3
From Branch Distribution Unit to Indoor Unit
(Qty. x AWG)
3
Piping Connections
Outdoor Unit to
Liquid (in., OD)
Branch Distribution
Vapor (in., OD)
Unit
Branch Distribution
Liquid (in., OD) x Qty.
Unit to Indoor
Vapor (in., OD) x Qty.
Units
Piping Lengths
Maximum Total System Piping (ft.)
Maximum Main Pipe Length (Outdoor Unit
to Branch Distribution Units [ft.])
Total Branch Piping (Branch Distribution Units
to Indoor Units [ft.])
Maximum Branch Pipe Length Between
Branch Distribution Unit and Each Indoor Unit [ft.])
Maximum Outdoor Unit to Indoor Unit
Pipe Length (ft.)
Piping Length (No Additional Refrigerant [ft.];
approx. 16 ft. of Main Piping + 131 ft. of
Branch Piping)
Maximum Elevation between Branch Distribution
Unit and Indoor Unit (ft.)
Maximum Elevation between Branch Distribution
Unit and Branch Distribution Unit (ft.)
At least one Branch Distribution Unit is required for system operation; a maximum of two can be installed per outdoor unit with use of Y-branch accessory (PMBL5620) To connect only one (1) indoor unit to a
1
branch distribution unit, the system must include another branch distribution unit with at least one (1) connected indoor unit.
2
Branch Distribution Unit can accommodate from one (1) indoor unit up to four (4) indoor units depending on the ports available on the Branch Distribution Unit.
3
All power wiring / communication cable to be minimum 14 AWG, 4-conductor from the outdoor unit to the BD unit (Multi F MAX systems only), and 14 AWG, 4-conductor from the BD unit to the indoor unit,
stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and must comply with applicable local and national codes.
4
Piping lengths are equivalent.
46 | BD UNIT
PMBD3620
1-2
1
2
24,000
7,000 ~ 24,000
48,000
0 ~ 150
80%
R410A
208-230, 1, 60
16
0.08
17-3/32 x 6-13/32
x 10-23/32
13
15
3
4C x 14
4C x 14
Ø3/8
Ø3/4
Ø1/4 x 2
Ø3/8 x 2
4
475.7
180.4
295.3
49.2
229.6
147.6
32.8
49.2
©
PMBD3630
PMBD3640
1-3
1-4
24,000
24,000
7,000 ~ 24,000
7,000 ~ 24,000
72,000
73,000
0 ~ 150
0 ~ 150
80%
80%
R410A
R410A
208-230, 1, 60
208-230, 1, 60
24
32
0.12
0.16
17-3/32 x 6-13/32
17-3/32 x 6-13/32
x 10-23/32
x 10-23/32
14.3
15.7
17
18
4C x 14
4C x 14
4C x 14
4C x 14
Ø3/8
Ø3/8
Ø3/4
Ø3/4
Ø1/4 x 3
Ø1/4 x 4
Ø3/8 x 3
Ø3/8 x 4
475.7
475.7
180.4
180.4
295.3
295.3
49.2
49.2
229.6
229.6
147.6
147.6
32.8
32.8
49.2
49.2
F
MULTI
F
MULTI
MAX
PMBD3641
1-4
Ports A, B, C: 24,000;
Port D: 36,000
Ports A, B, C: 7,000 ~ 24,000;
Port D: 24,000 or 36,000
73,000
0 ~ 150
80%
R410A
208-230, 1, 60
32
0.16
17-3/32 x 6-13/32 x 10-23/32
15.7
18
4C x 14
4C x 14
Ø3/8
Ø3/4
Ø1/4 x 4
Ø3/8 x 3; Ø1/2 x 1
475.7
180.4
295.3
49.2
229.6
147.6
32.8
49.2
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