VAH | 157
Vertical / Horizontal
Air Handler
Due to our policy of continuous product innovation, some specifications may change without notification.
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Table 117: Vertical / Horizontal (NK Frame) Air Handler Unit General Data.
General Data
NK Frames
VERTICAL / HORIZONTAL AIR HANDLER
Model No.
ARNU423NKA4
ARNU483NKA4
ARNU543NKA4
Cooling Mode Performance
Capacity (Btu/h)
42,000
48,000
54,000
Max Power Input
1
(W)
366
366
366
L/M/H Power Input at Factory Default (W)
186 / 215 / 260
186 / 264 / 330
264 / 312 / 370
Heating Mode Performance
Capacity (Btu/h)
46,000
54,000
60,000
Max Power Input
1
(W)
366
366
366
L/M/H Power Input at Factory Default (W)
186 / 215 / 260
186 / 264 / 330
264 / 312 / 370
Entering Mixed Air
Cooling Max. (°F WB)
76
76
76
Heating Min. (°F DB)
2
59
59
59
Unit Data
Refrigerant Type
3
R410A
R410A
R410A
Refrigerant Control
EEV
EEV
EEV
Sound Pressure
4
dB(A) (H/M/L)
46 / 44 / 41
49 / 47 / 41
50 / 49 / 47
Net Unit Weight (lbs.)
165
165
165
Shipping Weight (lbs.)
181
181
181
Communication Cable
5
(No. x AWG)
2 x 18
2 x 18
2 x 18
Fan
Type
Sirocco
Sirocco
Sirocco
Motor
1
1
1
Housing
1
1
1
Motor/Drive
Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode
1,250 / 1,100 / 1,000
1,400 / 1,260 / 1,000
1,475 / 1,400 / 1,260
Airflow Rate H/M/L (CFM)
High Mode (Factory Set)
1,250 / 1,100 / 1,000
1,400 / 1,260 / 1,000
1,475 / 1,400 / 1,260
External Static Pressure (in. wg)
Standard Mode
0.3
0.3
0.3
External Static Pressure (in. wg)
High Mode (Factory Set)
0.5
0.5
0.5
Piping
Liquid Line (in., O.D.)
3/8 Brazed
3/8 Brazed
3/8 Brazed
Vapor Line (in., O.D.)
5/8 Brazed
5/8 Brazed
5/8 Brazed
Condensate Line (in., I.D.)
1
1
1
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national codes.
This unit comes with a dry nitrogen charge.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change without notice.
Current certified ratings are available at www.ahridirectory.org.
1
Max power input is rated at maximum setting value.
2
Low ambient performance with LGRED° heat technology is included in Multi V 5 Air Source Units
produced after February 2019.
3
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy
R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608
of CAA.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5
All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded and must
comply with applicable local and national codes. Ensure the communication cable is properly grounded
at the master outdoor unit only.
Do not ground the ODU-IDU communication cable at any other
point.
