Ventilation - Master TENTEvent125 TB116A Owner's Manual

11. Minimum heater clearances from com-
bust ble materials: Outlet: 8 ft. (2.40 m),
Sides: 1 ft. (30 cm), Top: 3 ft. (0.91 m),
Rear: 1 ft. (30 cm)
12. Keep heater at least 6 ft. (1.83 m) from
propane/LP tank(s). Do not point heater
at propane/LP tank(s) within 20 ft. (6 m).
In Canada keep heater at least 10 ft. (3 m)
from propane/LP tank(s).
13. Keep propane/LP tank(s) below 100° F
(38˚ C).
14. The minimum surrounding air temperature
rating for this heater is -20º F (-29º C).
15. Check heater for damage before each
use. Do not use a damaged heater.
16. Check hose before each use of heater.
If highly worn or cut, replace with hose
specified by manufacturer before using
heater.
17. Locate heater on stable and level surface
if heater is hot or operating.
18. Never block air inlet (rear) or air outlet
(front) of heater.
19. Keep heater away from strong drafts, wind,
water spray, rain, or dripping water.
20. Keep children and animals away from
heater.
21. Never move, handle, or service a hot
or operating heater. Severe burns may
result. You must wait 15 minutes after
turning heater off.
22. To prevent injury, wear gloves when han-
dling heater.
23. Never attach duct work to heater.
24. Space heaters used in the vicinity of tarpau-
lins, canvas or similar enclosure materials
shall be located a safe distance from such
materials. These enclosure materials shall
be of a fire retardant nature. These enclo-
sure materials shall be securely fastened to
prevent them from igniting or from upsetting
the space heater due to wind action.
25. Do not alter heater. Keep heater in its
original state.
26. Do not use heater if altered.
27. Turn off propane/LP supply to heater and
unplug when not in use.
28. Use only original replacement parts. This
heater must use design-specific parts.
Do not substitute or use generic parts.
Improper replacement parts could cause
serious or fatal injuries.
120942-01E
SaFeTy
Continued
29. The heater must be installed so that the
location of the heater does not obstruct or
interfere with normal or emergency exits
and doors or walkways in the structure.
30. Only use lifting handles to pick up appli-
ance (see Figure 1, page 6). Do not use
plastic top hand holds for lifting.
mum fresh, outside air ventila-
tion requirements. If proper
fresh, outside air ventilation is
not provided, carbon monoxide
poisoning can occur. Provide
proper fresh, outside air ventila-
tion before running heater.
Provide a fresh air opening of at least 42 in
(271 cm
Example: 3" high x 14" long = 42 in
extra fresh air if more heaters are being used.
Determining Correct Heater Size
1. Determine volume of space to heat:
Length x Width x Height
50 feet x 30 feet x 15 feet = 22,500 ft
2. Determine desired temperature rise:
Desired temperature 65° - 25° outside
temperature = 40° rise
3. Multiply volume x rise: 22,500 x 40 = 900,000
4. To determine how many BTU's are needed
multiply by 0.133
The heater thermostat will cycle on and off to
maintain the desired room temperature more
often if the BTU/hr is oversized for the space
being heated. The air infiltration and leakage
of heated air through cracks, passageway
openings, etc., will adjust the required BTU's
needed for the desired temperature.
Ventilation Air Requirements - National
Fuel Gas Code ANSI Z223.1/NFPA 54
1 inch
1 inch
125,000 BTU/hr ÷ 3,000 = 41.66
Provide 42 inch
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venTiLaTion

WARNING: Follow the mini-
) opening of fresh, outside air.
2
900,000 x 0.133 = 119,000 Btu
of opening per 3,000 BTU with
2
outside air
of opening per 1,000 BTU with non-
2
outside air
Determine fresh air needed
Input Max. divided by 3,000
of opening to fresh, outside air
2
3" high x 14" long - 42 inches
2
. Provide
2
3
2
5