Installation; Determining Confi Ned Or Unconfi Ned Space - Napoleon Knightsbridge VF Series Installation And Operation Manual

! WARNING
• Provide adequate ventilation and combustion air (see "determining confi ned or unconfi ned space" section).
• Provide adequate accessbility clearance for servicing and operating the appliance.
• Never obstruct the front opening of the appliance.
As long as clearance to combustibles is kept within the required distances, the most desirable and benefi cial loca-
tion for an appliance is in the centre of a building, thereby allowing the most effi cient use of the heat created. The
location of windows, doors and the traffi c fl ow in the room where the appliance is to be located should be consid-
ered.
Maintain these minimum clearances to combustibles:
BACK WALL
B
A. 6" B. 6" C. 2"* D. 4'
No additional fl oor protection is required.
Minimum 46" from appliance top to ceiling.
* At a distance of 2" from the wall, access to the blower switch, on-off switch or the blower power cord may not
be practical.
2.1 determining confi ned or unconfi ned space
The GVFS60-1 is rated at 30,000 BTUs per hour and therefore requires a minimum unconfi ned space of 1,500
cubic feet.
This appliance shall not be installed in a confi ned space or unusually tight construction unless provisions are provided for
adequate combustion and ventilation air.
The National Fuel Gas Code, ANSI Z223.1
cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space
and an unconfi ned space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per
kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space
in which the appliances are installed, through openings not furnished with doors are considered a part of the unconfi ned
space.
To determine the volume of the room where the appliance is to be installed, multiply the width x the length x the ceiling
height of that room measured in feet. If any adjoining rooms are connected by grilles or openings such as kitchen pass-
throughs, etc., the volume of those rooms may be added to the total.
Multiply the room volume by 1000 and divide this amount by 50 to determine the maximum BTU/hr that the space can
support with adequate combustion and ventilation air.
Add the Btu/hr of all fuel burning appliances located within the space such as gas furnace, gas water appliance, etc.
Do not include direct vent gas appliances which draw their input air from the outdoors and expel their exhaust to the
outdoors.
A
A
ALCOVE
/ NFPA 54 defi nes a confi ned space as a space whose volume is less than 50

2.0 installation

B
A
D
OBJECT
EN
BACK WALL
45°
C
9
W415-1966 / 07.08.19