3
Table 1 — 42WKN Physical Data
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
knockouts 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
1
1
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
32
3
/
8
/ 37
32
3
/
8
/ 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
32
3
/
8
/ 37
32
3
/
8
/ 37
32
3
/
8
/ 37
32
3
/
8
/ 37
Weight – Chassis/Fascia (lb)
40 / 5
40 / 5
64 / 18
64 / 18
97 / 21
97 / 21
CHILLED WATER COIL
Type
Finned Tube
Quantity
1
1
1
1
1
1
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
1
1
1
1
2
2
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 (Sweat)
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
1
1
2
2
3
3
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.) (Sweat)
5
/
8
N/A
5
/
8
5
/
8
5
/
8
5
/
8
BRANCH DUCT OPTION
Branch Duct Connections (quantity)
2
2
2
2
2
2
Branch Duct Diameter (in.)
5
5
5
5
6
6
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.)
3
3
3
3
3
3
Fresh Air Volume (cfm)
40
40
60
65
90
95
ID
—
Inside Diameter
OD —
Outside Diameter
