WSU PRODUCT DATA | 13
Water Source Unit Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
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Combination Unit Model Number
6.0 Ton
ARWM072BAS5
8.0 Ton
ARWM096BAS5
10.0 Ton
ARWM121BAS5
12.0
ARWM144BAS5
Individual Component Model Numbers
– – – –
Cooling Performance
Nominal Cooling Capacity (Btu/h)
1
72,000 96,000 119,700 144,000
Heating Performance
Nominal Heating Capacity (Btu/h)
1
81,000 108,000 135,000 162,000
Operating Range (Entering Water Temperature)
2
Cooling (°F)
50 – 113 50 – 113 50 – 113 50 – 113
Heating (°F)
50 – 113 50 – 113 50 – 113 50 – 113
Synchronous Operation (°F)
50 – 113 50 – 113 50 – 113 50 – 113
Compressor
Inverter Quantity
HSS DC Scroll x 1
Oil/Type
PVE/FVC68D
Unit Data
Refrigerant Type
R410A
R410A Refrigerant Factory Charge (lbs)
7.7 7.7 7.7 7.7
Refrigerant Control / Location
EEV / Indoor Unit
Max. Number Indoor Units / System
13 16 20 23
Sound Pressure dB(A)
3
48 (62) 50 (62) 56 (62) 56 (62)
Net Unit Weight (lbs.)
322 322 322 322
Shipping Weight (lbs.)
340 340 340 340
Communication Cables
5,6
2 x 18 AWG
Heat Exchanger (Stainless Steel Plate)
Maximum Pressure Resistance (psi)
640 640 640 640
Flow at Rated Condition (GPM)
20.3 25.4 30.4 35.5
Total Heat of Rejection (Btu/h)
94,100 125,900 157,900 190,100
Total Heat of Absorption (Btu/h)
74,200 98,600 122,700 146,800
Pressure Drop (ft-wg)
3.47 5.20 7.23 9.63
Δt
4
(°F)
9.3 9.9 10.4 10.7
Piping
7
Liquid Line (in.,OD)
3/8 Braze 3/8 Braze 1/2 Braze 1/2 Braze
High Pressure Vapor Line (in.,OD)
3/4 Braze 3/4 Braze 7/8 Braze 7/8 Braze
Low Pressure Vapor Line (Heat Recovery only; in.,OD)
3/4 Braze 7/8 Braze 1-1/8 Braze 1-1/8 Braze
Water Inlet / Outlet Connection (in.,ID)
1-1/2 FPT 1-1/2 FPT 1-1/2 FPT 1-1/2 FPT
Condensate Pipe Diameter (in.,ID)
3/4 MPT 3/4 MPT 3/4 MPT 3/4 MPT
Table 1: Single-Frame 208-230V Units.
1
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
2
Variable water flow control kit PWFCKN000 is required for applications with entering
water temperatures below 590F (one kit per frame). Minimum flow rate must be 40% of the
nominal flow rate, 2-10V signal with a linear flow response valve.
3
Sound pressure levels are tested in an anechoic chamber under ISO 3745 standard
at rated AHRI operating conditions.Sound pressure level may increase during heating
operation at maximum compressor frequency. Value in parenthesis is the maximum sound
pressure at those conditions.
4
Value is calculated as follows: Δt = Total Heat of Rejection ÷ (Rated Flow Rate x 500).
Data is for pure water.
5
Communication cable between WSU, IDU(s) / HRU(s), and Central Controller must be a
minimum of 2-conductor, 18 AWG, twisted, stranded, and shielded. Ensure the
communication cable shield is properly grounded to the WSU chassis only. Do not
ground the communication cable at any other point. Wiring must comply with all applicable
local and national codes.
6
Power wiring is field provided, solid or stranded, and must comply with the applicable
local and national codes.
7
LG requires that LATS software be used on all projects to ensure correct line sizing.
Designer must verify the shop drawing design against the as built design using LATS.
Contractor must also use LG manufactured Y-Branch and Header Kits only.
GENERAL DATA
Single Frame 208-230V Water Source Unit Specications
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