50
9.9. MLB Multi-Zone Specications (1.5 - 3 Ton)
Nominal Size - Tons 1.5 2.5 3
Outdoor Unit Model No. MLB018S4M MLB030S4M MLB036S4M
Number of Zones 2 Up to 3 Up to 4
Ambient Temperature Range - °F
Cooling –22 - 122 –22 - 122 –22 - 122
Heating –22 - 86 –22 - 86 –22 - 86
Sound Data (dBA) 61 63 63
Refrigerant Charge furnished (R-410A) 5 lbs. 11 oz.. 8 lbs. 6 oz.. 10 lbs. 2 oz..
Maximum line length with furnished charge (per zone) - ft. 25 25 25
Additional charge required per ft. - oz. 0.16 0.16 0.16
Compressor
No. and Type (1) Rotary (1) Rotary (1) Rotary
Refrigerant oil type VG74 VG74 VG74
Refrigerant oil charge - oz. 21 33.8 47.3
Connections - in. Liquid+Gas pipe (are) (2) 1/4 liq. + (2) 3/8 gas (3) 1/4 liq. + (3) 3/8 gas
(3) 1/4 liq. + (3) 3/8 gas
(1) 1/4 liq. + (1) 1/2 gas
Maximum pipe length for all rooms - ft. 131 197 262
Maximum pipe length for one indoor unit - ft. 82 98 115
Max. height difference between indoor and outdoor units - ft. 49 49 49
Max. height difference between indoor units - ft. 33 33 33
Outdoor
Fan
(No.) Diameter - in. (1) 21 (1) 22 (2) 22
Total air volume - cfm 2130 2150 4500
rpm 1050 / 900 / 850 1000 / 900 / 750 800 / 700 / 600
Outdoor Coil
Number of rows 2 2.6 2
Fins per inch 18 16 18
Fin type Hydrophilic aluminum
Tube outside diameter - in.
3/8 3/8 3/8
Tube type Ried copper tubing
Net face area - ft.2
8.18 8.16
6.54
Application area - sq. ft.
235 - 345 355 - 515 690 - 1010
Design Pressure PSIG 540 / 340 540 / 340 550/340
Shipping Data Net/Shipping weight (lbs.) 138 / 149 168 / 180 239 / 270
ELECTRICAL DATA
Electrical Characteristics - 60 Hz - 1 Phase 208/230V 208/230V 208/230V
2
Maximum Over-current Protection (amps) 25 40 50
3
Minimum circuit ampacity 20 25 35
Outdoor Fan Motor
Rated load amps 0.9 1.3 (2) 0.39
Output - W 120 120 (2) 85
NOTE - Per AHRI, the certied ratings for systems are valid for all combinations of indoor units with the specic outdoor units listed above and in the AHRI Directory of
Certied Equipment. Please visit http://www.ahridirectory.org for further details and latest updates.
1
Ratings are AHRI certied to AHRI Standard 1230-2010 with Addendum 2;
• Cooling Ratings - 80°F dry bulb/67°F wet bulb entering indoor coil air and 95°F dry bulb/75°F wet bulb outdoor air temperature.
• High Temperature Heating Ratings - 70°F dry bulb/60°F wet bulb entering indoor coil air and 47°F dry bulb/43°F wet bulb outdoor air temperature.
• Low Temperature Heating Ratings - 70°F dry bulb/60°F wet bulb entering indoor coil air and 17°F dry bulb/15°F wet bulb outdoor air temperature.
NOTE - Extremes of operating range are plus and minus 10% of line voltage.
2
HACR type circuit breaker or fuse.
3
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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