Use and Care Manual

1-550.28
4
Figure 4.3 - Horizontal Unit Delivery
Figure 4.3 - Vertical Cone Jet
Figure 4.4 - Vertical One-Way & Two-Way Louvers
H
H
H
H
H
1.3
1.2
1.1
1.0
.9
.8
.7
.6
.5
Correction Factor "R"
150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370
Average Water Temp – F
Steam Pressure
25 10 20 30 50 70 100
150
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.
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.
UNIT MOUNTING
Figure 4.2 - Maximum Mounting Heights Correction Factors
H
Figure 4.6 - Vertical Truncone
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.
Horizontal Type  Power-Throw Type 
Vertical Type with Deectors 
No Deector Cone-Jet Truncone Louvers
Model No.
Height (ft)
Model No.
Height (ft)
Model No.
Height (ft) Height (ft) Height (ft) Height (ft)
Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T.
HSB/HC 18 8 9 — — — V/VN 42  11 13 15 17 8 9 13 15
HSB/HC 24 9 11 — — — V/VN 59  14 16 19 22 9 11 16 18
HSB/HC 33 10 12 — — — V/VN 78  15 19 20 26 11 14 17 22
HSB/HC 47 12 14 — — — V/VN 95  15 19 20 26 11 14 17 22
HSB/HC 63 14 16 — — — V/VN 139  18 23 24 31 13 17 21 26
HSB/HC 86 15 17 — — — V/VN 161  20 26 27 35 14 18 23 30
HSB/HC 108 17 19 — — — V/VN 193  22 27 30 36 16 19 25 31
HSB/HC 121 16 18 — — — V/VN 212  22 27 30 36 16 19 25 31
HSB/HC 165 19 21 — — — V/VN 247  26 32 34 42 17 21 30 37
HSB/HC 193 18 — PT/PTN 279  16 — V/VN 279  30 36 37 45 18 22 35 41
HSB/HC 258 19 22 PT/PTN 333  17 — V/VN 333  30 36 37 45 17 20 35 41
HSB/HC 290 20 23 PT/PTN 385  17 — V/VN 385  30 36 36 43 17 20 35 41
HSB/HC 340 20 23 PT/PTN 500  18 — V/VN 500  37 45 44 54 19 24 42 51
— — — PT/PTN 610  20 22 V/VN 610  36 44 43 52 19 24 41 50
— — — PT 952  21 — V 952  37 45 — — — — — —
Table 4.1 - Maximum Mounting Heights