1.0 Safety • Clearance to Combustibles
* Heaters mounted on an angle between 0° to 30° must maintain clearances posted for 0° or 30°; whichever is
greater.
Important!
If the heater is mounted beneath a non-combustible surface an 8 in. minimum top clearance must be
maintained from the top of the heater to prevent overheating the controls.
Clearance to combustible distances represent a surface temperature of 90° F (32°C) above ambient. Ensure that
building materials with a low heat tolerance (i.e. awnings, fabrics, plastics, sprinklers, insulation) are protected
against degradation. This may require the heater to be mounted at a distance in excess of the published clearances
to combustibles. Contact the factory.
Model No.
Mounting
Angle*
Sides
Back
Top
Below
End(s)
Front
PH 28 (-SS)
28,000 [N,P]
0°
14”/35.6cm
N/A
13”/33.0cm 46”/116.8cm 22”/55.9cm
N/A
30°
N/A
8”/20.3cm 17”/43.2cm 46”/116.8cm 22”/55.9cm 46”/116.8cm
PH 31 (-SS)
31,000 [N,P]
0°
14”/35.6cm
N/A
13”/33.0cm 46”/116.8cm 22”/55.9cm
N/A
30°
N/A
8”/20.3cm 17”/43.2cm 46”/116.8cm 22”/55.9cm 46”/116.8cm
PH 34 (-SS)
34,000 [N,P]
0°
14”/35.6cm
N/A
13”/33.0cm 46”/116.8cm 22”/55.9cm
N/A
30°
N/A
8”/20.3cm 17”/43.2cm 46”/116.8cm 22”/55.9cm 46”/116.8cm
Chart 1.1
•
Clearance to Combustibles in Inches and CM
(see Figure 1.1)
Figure 1.1
•
Clearance to Combustibles
Top
(to ceiling)
Side
Side
Below
Below
Top
(to ceiling)
Back
Front
Inlet side down
End
End
END VIEW
0° MOUNTING ANGLE
END VIEW
30° MOUNTING ANGLE
SIDE VIEW
30°
5
