37MARAQ: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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REFRIGERANT PIPING
Table 8 — Refrigerant Piping Table
DO NOT install the connecting pipe until both the indoor and
outdoor units have been installed.
Insulate both the gas and liquid piping to prevent condensation.
CAUTION
OUTDOOR MODEL 37MARAQ12AA1 37MARAQ09AA3 37MARAQ12AA3 37MARAQ18AA3 37MARAQ24AA3 37MARAQ30AA3 37MARAQ36AA3
Power supply V;Ph;Hz 115V;1Ph;60HZ 208/230V;1Ph;60HZ
PIPING AND REFRIGERANT INFORMATION
Refrigerant Type Type R454B R454B R454B R454B R454B R454B R454B
Charge Amount lb. (kg) 2.09(0.95) 2.03(0.92) 2.03(0.92) 3(1.36) 4.41(2.0) 5.29(2.4) 7.05(3.2)
Additional refrigerant
charge
Oz/ft (g/m) 0.16(15) 0.16(15) 0.16(15) 0.16(15) 0.32(30) 0.32(30) 0.32(30)
Liquid Pipe
(size - connection type)
In (mm) 1/4in(6.35mm) 1/4in(6.35mm) 1/4in(6.35mm) 1/4in(6.35mm) 3/8in(9.52mm) 3/8in(9.52mm) 3/8in(9.52mm)
Suction Pipe
(size - connection type)
In (mm) 3/8in(9.52mm) 3/8in(9.52mm) 3/8in(9.52mm) 1/2in(12.7mm) 5/8in(15.9mm) 5/8in(15.9mm) 5/8in(15.9mm)
Min. Piping Length ft. (m) 10(3) 10(3) 10(3) 10(3) 10(3) 10(3) 10(3)
Standard Piping Length ft. (m) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)
Max. Piping Length with
no additional refrigerant
charge per System
ft. (m) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)
Total Maximum Piping
Length per system
ft. (m) 82.02(25) 82.02(25) 82.02(25) 98.42(30) 164.04(50) 164.04(50) 213.25(65)
Max. outdoor-indoor
height difference (OU
higher than IU)
ft. (m) 49.21(15) 49.21(15) 49.21(15) 65.62(20) 82.02(25) 82.02(25) 98.43(30)
Max. outdoor-indoor
height difference (IU
higher than OU)
ft. (m) 49.21(15) 49.21(15) 49.21(15) 65.62(20) 82.02(25) 82.02(25) 98.43(30)
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