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9.10. MLB Multi-Zone Specications (4 Ton)
Nominal Size - Tons 4
Outdoor Unit Model No. MLB048S4M
Number of Zones Up to 5
Ambient Temperature Range - °F Cooling –22 - 122
Heating –22 - 86
Sound Data (dBA) Cooling 64
Heating 64
Refrigerant Charge furnished (R-410A) 10 lbs. 3 oz.
Maximum line length with furnished charge (per zone) - ft. 25
Additional charge required per ft. - oz. 0.16 (1/4 in.) / 0.32 (3/8 in.)
Compressor No. and Type Rotary
Refrigerant oil type Ester Oil VG74
Refrigerant oil charge - oz. 49
Connections - in. Liquid+Gas pipe (are) (5) 1/4 + (3) 3/8 + (2) 1/2
Maximum pipe length for all rooms - ft. 262
Maximum pipe length for one indoor unit - ft. 115
Max. height difference between indoor and outdoor units - ft. 49
Max. height difference between indoor units - ft. 33
Outdoor
Fan
(No.) Diameter - in. (2) 22
Total air volume - cfm 4500
rpm 800/700/600
Outdoor Coil Number of rows 2
Fins per inch 18
Fin type Hydrophilic aluminum
Tube outside diameter - in. 3/8
Tube type Ried copper tubing
Net face area - ft.² 6.43+6.97
Design Pressure PSIG 550/340
Shipping Data Net/Shipping weight (lbs.) 239 / 270
ELECTRICAL DATA
Electrical Characteristics - 60 Hz - 1 Phase 208/230V
1
Maximum Overcurrent Protection (amps) 50
2
Minimum circuit ampacity 35
Outdoor Fan Motor Rated load amps (2) 0.39
Output - W (2) 85
NOTE - Extremes of operating range are plus and minus 10% of line voltage.
1
HACR type circuit breaker or fuse.
2
Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.
NOTE - Adaptors are furnished for the gas pipe connections:
036 - (3) 3/8 x 1/2 in. and (1) 1/2 x 3/8 in.
048 - (3) 3/8 x 1/2 in., (2) 1/2 x 3/8 in., (2) 1/4 x 3/8 in. and (2) 1/2 x 5/8 in.
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