38MURA: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10
Step 3 - Condensate Drain Installation
NOTE: Install drains must meet local sanitation codes.
Install the outdoor unit drain joint
Fit the seal into the drain joint, then insert the drain joint into the base pan
hole of the outdoor unit. Rotate 90° to securely assemble them. Connect
the drain joint with an extension drain hose to avoid condensate from
draining off the outdoor unit during the heating mode.
Fig. 11 — Drain Joint
NOTE: Images are for illustration purposes only.
NOTE: Basepan built-in with multiple holes for proper draining
during defrost. For applications where it is required to seal
these holes, and re-direct the condensate drain, rubber plugs
are available through RCD.
Table 6 — Base Pan Rubber Plugs
Step 4 - Operating Ambient
Step 5 - Refrigerant Piping Connections
Table 7 — Piping and Refrigerant
Base pan hole of
outdoor unit
Drain fitting
Seal
Seal
OUTDOOR UNIT MODEL
NUMBER
PER UNIT
BASE PAN RUBBER PLUGS
RCD PART NUMBER
38MURAQ18AA3
38MURAQ18AB3
38MURAQ24AA3
38MURAQ24AB3
38MURAQ30AA3
38MURAQ30AB3
38MURAQ36AA3
38MURAQ36AB3
38MURAQ48AA3
38MURAQ48AB3
38MURAQ60AA3
38MURAQ60AB3
12600801A00077
EQUIPMENT DAMAGE HAZARD
In cold climates, ensure the drain hose is as vertical as possible to
ensure swift water drainage. If water drains too slowly, it can freeze
in the hose and flood the unit.
CAUTION
OPERATING RANGE AND HUMIDITY
HIGH HEAT
MODELS
REGULAR
MODELS
Operating Range
Cooling Outdoor
Min - Max DB
°F -22~130 5~130
°C -30~55 -15~55
Heating Outdoor
Min - Max DB
°F -22~86 -5~86
°C -30~30 -15~30
Operating Humidity % 0~80 0~80
System Size 18K
18K High
Heat
24K
24K High
Heat
30K
30K High
Heat
36K
36K High
Heat
48K
48K High
Heat
60K
60K High
Heat
(208/230 V)
Min. Piping Length ft.(m) 9.8 (3)
Standard Piping Length ft.(m) 24.6 (7.5)
Max. outdoor-indoor
height difference
(OU higher than IU)
ft.(m) 65.6 (20) 65.6 (20) 82 (25) 82 (25) 82 (25) 82 (25) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30)
Max. outdoor-indoor
height difference
(IU higher than OU)
ft.(m) 65.6 (20) 65.6 (20) 82 (25) 82 (25) 82 (25) 82 (25) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30) 98.4 (30)
Suction Pipe
(size - connection type)
in (mm) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø3/4” (19) ø7/8” (22) ø7/8” (22)
Liquid Pipe (
size-connection)
in (mm) ø3/8” (9.52)
Refrigerant Type Type R410A
Charge Amount lb. (kg) 3.53 (1.6) 5.07 (2.3) 4.63 (2.1) 6.39 (2.9) 6.72 (3.05) 8.38 (3.8) 8.16 (3.7) 10.36 (4.7) 10.4 (4.7) 10.58 (4.8) 10.8 (4.9)
10.58 (4.8)
Total Maximum Piping
Length per system
ft. (m 98.4(30) 98.4(30) 164 (50) 164 (50) 164 (50) 164 (50) 213 (65) 213 (65) 213 (65) 213 (65) 213 (65) 213 (65)
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