User Guide
1-558.0
4
Figure 4.3 - Horizontal Unit Delivery
H
These correction factors are to be used as multipliers to correct the maximum recommended mounting heights of unit heaters when operated with water at other than
average temperature of 140°F.
UNIT MOUNTING
Figure 4.2 - Maximum Mounting Heights Correction Factors
Horizontal Type Downward Deector Hood k
Model No. Max Mounting Height (ft)
30° 60° 90°
Max Mounting Height (ft) Max Mounting Height (ft) Max Mounting Height (ft)
HCH 22 8 14 15 32
HCH 39 8 12 12 35
HCH 67 9 16 16 24
HCH 104 11 19 19 40
HCH 170 11 19 19 52
HCH 195 11 18 18 41
Table 4.1 - Maximum Mounting Heights
j With horizontal louvers opened 30° from the vertical plane.
Mounting heights are maximum for heaters operating at standard conditions, Heights listed for Downward Deflector Hoods 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.
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
2.4
2.6
90 100 110 120 130 140 150 160 170 180
Correction Factor "R"
Maximum Mounting Heights Correction Factors