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MULTI
F
MAX
MULTI
F
18
MULTI F / MULTI F MAX Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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GENERAL DATA
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Table 6: Branch Distribution Unit General Data.
1
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 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
Communication / power (connection) cable must be a minimum of 14 AWG, 4-conductor from the outdoor unit to the branch distribution unit (Multi F MAX systems only), and 14 AWG,
4-conductor from the branch distribution 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.
Model Number PMBD3620 PMBD3630 PMBD3640 PMBD3641
No. of Connectible Indoor Units
1
1-2 1-3 1-4 1-4
Max. Nominal Capacity / Port (Btu/h)
2
24,000 24,000 24,000
Ports A, B, C: 24,000;
Port D: 36,000
Connected Indoor Unit Capacity 7,000 ~ 24,000 7,000 ~ 24,000 7,000 ~ 24,000
Ports A, B, C: 7,000 ~ 24,000;
Port D: 24,000 or 36,000
Max. Nominal Capacity / Branch Distribution
Unit (Btu/h)
48,000 72,000 73,000 73,000
Operation Temperature Range (°F DB) 0 ~ 150 0 ~ 150 0 ~ 150 0 ~ 150
Maximum Humidity 80% 80% 80% 80%
Unit Data
Refrigerant Type R410A R410A R410A R410A
Power Supply V, Ø, Hz 208-230, 1, 60 208-230, 1, 60 208-230, 1, 60 208-230, 1, 60
Power Input (W) 16 24 32 32
Rated Amps (A) 0.08 0.12 0.16 0.16
Dimensions W x H x D (in.)
17-3/32 x 6-13/32
x 10-23/32
17-3/32 x 6-13/32
x 10-23/32
17-3/32 x 6-13/32
x 10-23/32
17-3/32 x 6-13/32
x 10-23/32
Net Unit Weight (lbs.) 13 14.3 15.7 15.7
Shipping Weight (lbs.) 15 17 18 18
Communication / Connection (Power) Cables
3
From Outdoor Unit to Branch Distribution Unit
(Qty. x AWG)
3
4C x 14 4C x 14 4C x 14 4C x 14
From Branch Distribution Unit to Indoor Unit
(Qty. x AWG)
3
4C x 14 4C x 14 4C x 14 4C x 14
Piping Connections
Outdoor Unit to
Branch Distribution
Unit
Liquid (in., OD) Ø3/8 Ø3/8 Ø3/8 Ø3/8
Vapor (in., OD) Ø3/4 Ø3/4 Ø3/4 Ø3/4
Branch Distribution
Unit to Indoor Units
Liquid (in., OD) x Qty. Ø1/4 x 2 Ø1/4 x 3 Ø1/4 x 4 Ø1/4 x 4
Vapor (in., OD) x Qty. Ø3/8 x 2 Ø3/8 x 3 Ø3/8 x 4 Ø3/8 x 3; Ø1/2 x 1
Piping Lengths
Maximum Total System Piping (ft.)
4
475.7 475.7 475.7 475.7
Maximum Main Pipe Length (Outdoor Unit
to Branch Distribution Units [ft.])
180.4 180.4 180.4 180.4
Total Branch Piping (Branch Distribution Units
to Indoor Units [ft.])
295.3 295.3 295.3 295.3
Maximum Branch Pipe Length Between Branch
Distribution Unit and Each Indoor Unit [ft.])
49.2 49.2 49.2 49.2
Maximum Outdoor Unit to Indoor Unit
Pipe Length (ft.)
229.6 229.6 229.6 229.6
Piping Length (No Additional Refrigerant [ft.];
approx. 16 ft. of Main Piping + 131 ft. of
Branch Piping)
147.6 147.6 147.6 147.6
Maximum Elevation between Branch Distribution
Unit and Indoor Unit (ft.)
32.8 32.8 32.8 32.8
Maximum Elevation between Branch Distribution
Unit and Branch Distribution Unit (ft.)
49.2 49.2 49.2 49.2
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