Schwank P40U Fenwal - Manual (Page 8)

8
P40U-F / P40U-IF I&O Manual
IM101220
RD: MAY 2014
RL: 5A
VENT END CLEARANCE: Clearances from the vent pipe are determined by local or national
installation codes, but must not be less than 6 inches (15 cm). For ‘unvented’ installation, a
minimum distance of 24 inches (61 cm) is required from the end of heater to a combustible
surface.
In locations used for the storage of combustible materials:
Signs must be posted specifying the maximum permissible
stacking height to maintain the required clearances from the heater to the combustibles.
The signs must be posted either adjacent to the IR heating system thermostats or in the ab-
sence of such thermostats, in a conspicuous place.
For your convenience a “peel and stick” sign
is provided with this heater. Use a permanent
marker to record the required dimensions on
the sign.
‘H’ is a value calculated at site: (H = T - C)
 Measure the on site distance between bottom of
the hanger and the floor = ‘T’ inches (cm).
 The minimum clearance to combustibles below
this model heater is 55 inches (140 cm)
 Subtract 55 inches (140 cm) from ‘T’ to get
value ‘H’.
 Enter the calculated value ‘H’ on the sign
For model P40U enter the values for other dimen-
sions are: ‘S’ = 24” (61 cm), ‘F’= 36” (91.5 cm) and
‘B’ = 12” (30.5 cm). See Figure 1 and Table 1
Post this sign as instructed above.
It is the installer’s responsibility to ensure that building materials with a low heat toler-
ance which may degrade at lower temperatures are protected to prevent degradation.
Examples of low heat tolerance materials include vinyl siding, fabrics, some plastics,
filmy materials, some coatings and laminated finishes, etc.
24”
12”
36”
WARNING