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UNIT MOUNTING
Table 4.1 - Maximum Mounting Heights
Horizontal Type
Height (ft)
Model No.
Std. L.O.T.
HSB/HC 18
8
9
HSB/HC 24
9
11
HSB/HC 33
10
12
HSB/HC 47
12
14
HSB/HC 63
14
16
HSB/HC 86
15
17
HSB/HC 108
17
19
HSB/HC 121
16
18
HSB/HC 165
19
21
HSB/HC 193
18
—
HSB/HC 258
19
22
HSB/HC 290
20
23
HSB/HC 340
20
23
—
—
—
—
—
—
➀ With horizontal louvers opened 30° from the vertical plane. HSB units have top and bottom piping connections, HC units have side connections. All have copper tubes.
➁ V and PT models have copper tubes, VN and PTN models have cupronickel tubes. Mounting heights are maximum for heaters operating at standard conditions
(2 lbs. steam or 220°F water with 60°F entering air). Heights listed for Louver or Cone-Jet are with deflectors in fully-opened position. Refer to Figure 4.2 for correction of
mounting heights under other operating conditions. Maximum mounting height will be reduced as entering air temperatures exceed 60°F.
figure 4.2 - Maximum Mounting Heights Correction factors
1.3
1.2
1.1
1.0
.9
.8
.7
.6
.5
150
160
170
180
These correction factors are to be used as multipliers to correct the maximum recommended mounting heights of unit heaters when operated with steam pressures other
than 2 pounds or with water at other than average temperature of 220°F.
figure 4.3 - Horizontal Unit Delivery
H
figure 4.3 - Vertical Cone Jet
H
4
Power-Throw Type ‚
Height (ft)
Model No.
Std. L.O.T.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
PT/PTN 279 ‚
16
PT/PTN 333 ‚
17
PT/PTN 385 ‚
17
PT/PTN 500 ‚
18
PT/PTN 610 ‚
20
PT 952 ‚
21
2
5
190
200
210
220
230
figure 4.6 - Vertical Truncone
H
Vertical Type with Deflectors ‚
No Deflector
Height (ft)
Model No.
Std.
—
V/VN 42 ‚
11
—
V/VN 59 ‚
14
—
V/VN 78 ‚
15
—
V/VN 95 ‚
15
—
V/VN 139 ‚
18
—
V/VN 161 ‚
20
—
V/VN 193 ‚
22
—
V/VN 212 ‚
22
—
V/VN 247 ‚
26
—
V/VN 279 ‚
30
—
V/VN 333 ‚
30
—
V/VN 385 ‚
30
—
V/VN 500 ‚
37
22
V/VN 610 ‚
36
—
V 952 ‚
37
Steam Pressure
10
20
30
240
250
260
270
280
Average Water Temp – F
figure 4.4 - Vertical One-Way & Two-Way Louvers
H
1-550.28
Cone-Jet
Truncone
Height (ft)
Height (ft)
L.O.T.
Std.
L.O.T.
Std.
13
15
17
8
16
19
22
9
19
20
26
11
19
20
26
11
23
24
31
13
26
27
35
14
27
30
36
16
27
30
36
16
32
34
42
17
36
37
45
18
36
37
45
17
36
36
43
17
45
44
54
19
44
43
52
19
45
—
—
—
50
70
100
290
300
310
320
330
H
Louvers
Height (ft)
L.O.T.
Std.
L.O.T.
9
13
15
11
16
18
14
17
22
14
17
22
17
21
26
18
23
30
19
25
31
19
25
31
21
30
37
22
35
41
20
35
41
20
35
41
24
42
51
24
41
50
—
—
—
150
340
350
360
370
H
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