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Modulating Unitary Range
VA-LT206_11292016al
CLEARANCE TO COMBUSTIBLES
Reflector Configurations
Model
Number
Clearance to Combustibles in (cm)
A
B
C
D
HORIZONTAL
VA-80
2 (5)
26 (66)
62 (157)
26 (66)
VA-115
4 (10)
33 (84)
71 (180)
33 (84)
VA-150
4 (10)
36 (91)
74 (188)
36 (91)
VA-200
6 (15)
44 (46)
80 (203)
44 (46)
A general clearance of 18 in (.5 m) in every direction is recommended for servicing.
In addition to this it is very important to observe the minimum clearance to combustibles at all times to
avoid any possibility of property damage or personal injury.
WARNING
◊
Clearances as marked on the heater body must be maintained from vehicles parked beneath.
Signs should be posted identifying any possible violation of the clearance distances from the
heater in all vehicle areas.
◊
Maximum allowable stacking height in storage areas should be identified with signs or
appropriate markings adjacent to the thermostat or in a conspicuous location.
Table 2 lists the minimum clearance to combustible materials for various installation configurations. Note
that standard clearances also apply to installation above T-bar ceilings and above decorative grills. Additional
clearance may be required for glass, painted surfaces and other materials which maybe damaged by radiant or
convective heat.
Combustible materials
are considered to be wood, compressed paper, plant fibers, plastics, Plexiglas or other
materials capable of being ignited and burned. Such materials shall be considered combustible even though
flameproofed, fire-retardant treated or plastered.
Elbows and U-bends are non-heat treated aluminized material and are typically installed without reflectors.
Reflector miter kits are available for U-bends and elbows. Clearance around non-reflector fittings is 18”, unless a
reflector kit is used, refer to table 2.
Adequate clearance to sprinkler heads must be maintained (NFPA 13: Standard for the Installation of Sprinkler
Systems).
The stated clearance to combustibles represents a surface temperature of 90°F (32°C) above room temperature.
Building materials with low heat tolerance (i.e. plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to
degradation at lower temperatures.
It is the installer’s responsibility to ensure that adjacent materials are protected from degradation.
Table 2: Minimum Clearance to Combustibles (pp. 6-8)
◊
Note 1: Bottom Shields are approved for all burner sizes. The “below” clearance (dimension C in
Table 2)may be reduced by 25% when an approved Bottom Shield is used.
◊
Note 2: Reduced clearances downstream from the burner are approved for all configurations.
Dimensions “B”, “C”, and “D” in Table 2 can be reduced for locations 25' (7.6 m) or more
downstream from a burner, before the next burner, maximum reduction is 50%
Содержание VA Range
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