
Form 43343120
-4-
July 2021
4.0)
MINIMUM CLEARANCES TO COMBUSTIBLES
Install the warnings card (ordered separately) and complete the blank spaces using the clearances from
combustibles table below. See Section 26 for a printed copy of the warnings card.
Minimum clearances to combustibles shall be measured from the outer surfaces as shown in the following
diagram:
MINIMUM CLEARANCES TO COMBUSTIBLES
Model No.
Mounted Horizontally
Sides
Ceiling
(Vented)
*Ceiling
(Unvented)
Below
Ends
PGR40
22
”
6”
8
”
62
”
15”
PGR 50
22
”
6”
8
”
66
”
15”
PGR 60
22
”
6”
8
”
66
”
15”
PGR 75, 80
22
”
6”
8
”
7
0”
15”
PGR 100
28
”
6”
8
”
8
0”
15”
PGR 125
28
”
8
”
10
”
86
”
20
”
▲WARN
ING: Certain materials or objects, when stored under the heater, will be subjected to radiant heat and
could be seriously damaged. Observe the Minimum Clearances to Combustibles listed in the manual and on the
heater at all times.
NOTE:
1. The clearances specified above must be maintained to combustibles and other materials that may be
damaged by temperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the
burner box. In areas used for storage of combustible materials where they may be stacked below the heater,
NFPA54 requires that the installer must post signs
that will “specify the maximum permissible stacking heigh
t
to maintain the required clearances from the heater to combustibles.” Space
-Ray recommends posting these
signs adjacent to the heater thermostat or other suitable location that will provide enhanced visibility.
2. The stated clearance to combustibles represents a surface temperature of 90 ºF (32 ºC) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyle siding, canvas, tri-ply, etc.)
may be subject to degrad
ation at lower temperatures. It is the installer’s respons
ibility to assure that adjacent
materials are protected from degradation.
Содержание PGR 100-L5
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Страница 56: ...Form 43343120 July 2021 55 21 10 REMOVING GAS VALVE AND MANIFOLD ASSEMBLY 21 11 AIR SWITCH PRESSURE CHECK ...