
Page 10 P/N:974-6638 S400/S400T Manual, Rev: 5.74
INSTALLATION
The Sure Flame Models S400 & S400T are direct red gas heaters in-
tended to be used primarily for the temporary heating of buildings under
construction, alteration, or repair. Since all the products of combustion are
released into the area being heated, it is imperative that adequate venti-
lation is provided. The ow of supply air and combustion gases must not
be obstructed in any way. Do not use the heater with ductwork as this will
restrict the ow of supply air.
1. Install the heater in a horizontal position at least 6 feet from any LP-
gas container, and allow the following clearances from any combus-
tible materials:
Front Outlet: 12 feet (3.6 M) Sides:2 feet (0.6 M)
Intake: 2 feet (0.6 M) Top:4 feet (1.2 M)
Front Outlet must not be directed at any LP-gas container within 20
feet (6 M).
Make sure that no ammable vapours are present in the space where
the heater is being used.
The installation of this heater MUST be in accordance with the appro-
priate following Standard:
Natural Gas and Propane Installation Code, CSA B149.1.
2. When connecting the heater to a natural gas or propane supply line
ensure that the pressure at the heater inlet is within the specied range.
Please refer to Propane and Natural Gas Installation sections on page
8. Excessive pressure (over 1/2” psi) will damage the controls and void
the warranty.
3. Visually inspect the hose assembly and ensure that it is protected from
trafc, building materials, and contact with hot surfaces. If it is evident
that there is excessive abrasion or wear, or the hose is cut, it must be
replaced.
4. After installation, check the hose assembly for gas leaks by applying a
water and soap solution to each connection.
5. Connect the heater to an adequate 115 volt electrical supply as specied
on the rating plate. For protection against shock hazard the supply cord
must be plugged directly into a properly grounded three-prong recep-
tacle. The electrical installation of the heater MUST be in accordance
with CSA Standard C22.1 Safety Standard for Electrical Installations.
6. In all applications, install the heater in such a manner that it is not
directly exposed to water spray, rain and/or dripping water.