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6
Nominal Cooling BTU/h
Nominal Heating BTU/h
Voltage/Frequency/Phase
Recommended Static Pressure
In. W. C.
Air Circ. C.F.M. (m
3
/h) Clg/Htg: Hi
Medium
Low
Quiet
Noise Level
dB(A) (Clg/Htg): Hi
Medium
Low
Quiet
Running Current
Rated (A): Cooling
Heating
Power Use
Rated (W): Cooling
Heating
Fan Speeds Stage
Air Filter
Connection Method
Conn. Pipe Diameter
Inch
Net Weight lbs. (kg)
Dimensions: Height Inch (mm)
Width Inch (mm)
Depth Inch (mm)
Supply Duct Flange
Dimensions: Height Inch (mm)
Width Inch (mm)
Depth Inch (mm)
Return Duct Flange
Dimensions: Height Inch (mm)
Width Inch (mm)
Depth Inch (mm)
Refrigerant
Compact Duct 9, 12, 18 and 24,000 BTUs
ARU9RLF, ARU12RLF, ARU18RLF, ARU24RLF
ARU9RLF
Heat Pump
ARU12RLF
Heat Pump
ARU18RLF
Heat Pump
ARU24RLF
Heat Pump
9,000 12,000 18,000 24,000
10,200 13,500 20,000 27,000
208-230/60/1 208-230/60/1 208-230/60/1 208-230/60/1
0 ~ 0.36 0 ~ 0.36 0 ~ 0.36 0 ~ 0.20
353 (600) 383 (650) 554 (940) 783 (1,330)
324 (550) 353 (600) 518 (880) 730 (1,240)
294 (500) 324 (550) 483 (820) 648 (1,100)
265 (450) 283 (480) 442 (750) 607 (1,030)
28/28 29/29 32/33 33/35
27/26 28/28 31/32 32/34
26/25 27/27 30/31 30/32
25/24 26/24 29/29 29/29
0.30 0.35 0.44 0.66
0.30 0.35 0.44 0.66
49 58 73 111
49 58 73 111
4 + Auto 4 + Auto 4 + Auto 4 + Auto
Washable Washable Washable Washable
Flare Flare Flare Flare
suc 3/8 dis 1/4 suc 3/8 dis 1/4 suc 1/2 dis 1/4 suc 5/8 dis 1/4
41 (19) 41 (19) 50 (23) 59 (27)
7-25/32 (198) 7-25/32 (198) 7-25/32 (198) 7-25/32 (198)
27-9/16 (700) 27-9/16 (700) 35-7/16 (900) 43-5/16 (1,100)
24-13/32 (620) 24-13/32 (620) 24-13/32 (620) 24-13/32 (620)
5-15/16 (151) 5-15/16 (151) 5-15/16 (151) 5-15/16 (151)
25-19/32 (650) 25-19/32 (650) 33-15/32 (850) 41-11/32 (1,050)
3/4 (19) 3/4 (19) 3/4 (19) 3/4 (19)
6-27/32 (174) 6-27/32 (174) 6-27/32 (174) 6-27/32 (174)
22-19/32 (574) 22-19/32 (574) 30-15/32 (774) 38-11/32 (974)
3/4 (19) (Flat) 3/4 (19) (Flat) 3/4 (19) (Flat) 3/4 (19) (Flat)
R410A R410A R410A R410A
Standard Features
l
Dry Mode
l Weekly Timer
l Sleep Timer*
l 24-Hour Timer*
l Minimum Heat Mode*
l Auto Mode
l
Quiet Mode
l Auto Restart/Reset
l
Auto Changeover
l
Condensate Pump
l
Fresh Air Intake
Compact Duct
Adaptable when ceiling cavity
is small and there is no slope
for drain.
Drain
Pump
13”
9.4”
Traditional
Compact Duct
ARU9, 12RLF ARU18RLF
*Available only with optional wireless
remote control.
ARU24RLF
Field Supplied Filters Used With Compact Duct Units
ARU
9RLF
ARU
12RLF
ARU
18RLF
ARU
24RLF
353
353
547
806
12 x 20
12 x 20
14 x 25
18 x 30
212
212
225
215
0.36
0.36
0.36
0.20
1" Fiberglass Filter
0.04
0.04
0.04
0.04
0.32
0.32
0.32
0.16
1" MERV 8 Pleated Filter
0.12
0.12
0.14
0.13
0.24
0.24
0.22
0.07
2" MERV 8 Pleated Filter
0.07
0.07
0.08
0.07
0.29
0.29
0.28
0.13
CFM
Typical Filter Size
Velocity, FPM
Unit External SP, in. W.C.
SP Loss, in. W.C.
Available Static Pressure
SP Loss, in. W.C.
Available Static Pressure
SP Loss, in. W.C.
Available Static Pressure
A fiberglass filter is shown in
blue to the left. A MERV pleated
filter is shown in white.
Return Air-intake Choices
Back
Bottom
Compact Duct Units require field supplied filters. They can be installed
at the unit or for more convenient servicing, in filter grilles. The chart
to the right provides guidelines for determining filter sizes.
Filters are sized to keep velocities and
static pressure loss low. This will insure
sufficient static pressure is available for
ductwork, fittings and supply and return
grilles. lternative filter sizes with
equivalent face areas can be used.
After deducting filter loss, available
static pressure values are shown.