
3
LEGEND NOTES:
1. Cooling capacity based on 80 F dry bulb/67 F wet bulb indoor and
a 45 F entering/55 F leaving chilled water temperature.
2. Heating capacity based on water temperature of 180 F inlet /160 F
outlet and an air temperature of 70 F dry bulb.
3. Ducted air volume based on maximum air volume available
through one branch duct 6 ft long, with cassette fan(s) at high
speed and corresponding fascia aperture closed.
4. Fresh air volume based on maximum fresh air through all knock-
outs connected to one 10 ft long duct with fan at high speed.
42WKN UNIT SIZE 08 12 18 20 33 36
NOMINAL TONS
3
/
4
11
1
/
2
1
3
/
4
2
1
/
2
3
COOLING CAPACITY (Btuh) 6,601 11,091 17,592 19,087 29,722 35,258
DIMENSIONS/WEIGHTS
Height – Chassis/Fascia (in.)
(not additive)
11
3
/
4
/ 1
1
/
4
11
3
/
4
/ 1
1
/
4
11 / 1
3
/
4
11 / 1
3
/
4
13 / 1
3
/
4
13 / 1
3
/
4
Width – Chassis/Fascia (in.) 22
1
/
2
/ 25 22
1
/
2
/ 25 33
1
/
4
/ 37 33
1
/
4
/ 37 45
1
/
2
/ 49
1
/
4
45
1
/
2
/ 49
1
/
4
Depth – Chassis/Fascia (in.) 22
1
/
2
/ 25 22
1
/
2
/ 25 33
1
/
4
/ 37 33
1
/
4
/ 37 33
1
/
4
/ 37 33
1
/
4
/ 37
Weight – Chassis/Fascia (lb) 40 / 5 40 / 5 64 / 18 64 / 18 97 / 21 97 / 21
CHILLED WATER COIL
Type Finned Tube
Quantity 111111
Face Area (sq ft) 1.8 1.8 2.8 2.8 5.2 5.2
Nominal Airflow (cfm)
High 350 350 630 700 970 1160
Medium 300 300 530 630 890 970
Low 260 260 500 530 785 890
Discharge 4-way 4-way 4-way 4-way 4-way 4-way
Unit Water Volume (gal) 0.29 0.29 0.45 0.45 0.79 0.79
FAN
Type Centrifugal
Quantity 111122
Diameter (in.) 12 12 15 15 14 14
Horsepower per fan (Hp)
1
/
8
1
/
8
1
/
8
1
/
8
1
/
8
1
/
8
CONNECTIONS
Chilled Water Inlet, OD (in.)
5
/
8
5
/
8
7
/
8
7
/
8
7
/
8
7
/
8
Chilled Water Outlet, OD (in.)
5
/
8
5
/
8
7
/
8
7
/
8
7
/
8
7
/
8
Condensate, ID (in.)
3
/
8
3
/
8
3
/
8
3
/
8
3
/
8
3
/
8
FILTRATION
Type Cleanable Wire Framed
Quantity 112233
Arrestance 80% 80% 80% 80% 80% 80%
CONDENSATE PUMP
Maximum Head (in.) 30 30 30 30 30 30
Nominal Flow Rate (gpm) 0.1 0.1 0.1 0.1 0.1 0.1
HEATING OPTION
Electric Heating Capacity (kW) 1.5 1.5 3.0 3.0 5.0 5.0
Hot Water Heating Capacity (Btuh) 13,799 N/A 29,258 30,946 46,455 51,600
Hot Water Coil Connection, OD (in.)
5
/
8
N/A
5
/
8
5
/
8
5
/
8
5
/
8
BRANCH DUCT OPTION
Branch Duct Connections (quantity) 1-3 1-3 1-4 1-4 1-4 1-4
Branch Duct Diameter (in.) 555566
Ducted Air Volume (cfm) 80 80 100 125 200 220
FRESH AIR OPTION
Fresh Air Connections (quantity) 1-2 1-2 1-3 1-3 1-3 1-3
Fresh Air Duct Diameter (in.) 333333
Fresh Air Volume (cfm) 40 40 60 65 90 95
ID — Inside Diameter
N/A — Not Applicable
OD — Outside Diameter
Physical data
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