36
Installation
13.1 Gas Connections
Before connecting the appliance to the gas supply line, double check that the appliance you have purchased is designed for the
gas type you are using. The gas type markings are located on the rating plate (See
Section 4.0
and
Section 6.6
) and also on the
appliance’s gas valve.
Adequate clearance for proper installation and checking of the gas connections must be provided.
All gas connections must be
checked for gas leaks
.
After securing the fireplace to the framing, have your gas supplier or a qualified gas fitter run a gas supply line to the install location.
The line must be properly sized and fitted according to the installation codes. Immediately upstream of the supply connection, the fitter
shall provide an accessible manual shut-off valve. When connecting the supply line to the gas valve, the installer shall brace the gas
valve to ensure that the gas valve is not moved from its bracket. If the valve is not braced when the supply line is connected, the valve
may be moved and cause a “break” in the main burner supply line. Such damage is not covered by the manufacturer’s warranty.
CAUTION:
The appliance and its individual shut-off valve must be disconnected from the gas supply piping system during any
pressure-testing of that system at test pressures in excess of 1/2 psig (3.5 kPa). The appliance must be isolated from the gas supply
piping system by closing its individual manual shut-off valve during any pressure-testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig (3.5 kPa). Failure to do so will damage the appliance’s gas valve. Such damage is not covered
by the manufacturer’s warranty.
Natural Gas Pressure Settings:
The inlet supply or line pressure must be a minimum of 5.0” W.C. (1.24 kPa) and a maximum of 14.0" W.C. (3.48 kPa). The orifice is a
#43
DMS (2.26 mm) drill size.
ELEVATION
INPUT RATING
0-4500 ft (0-1372 M)
25,000 BTU/hr (9.1 kW)
4500 ft (1372 M) and above.
25,000 BTU/hr (9.1 kW) less 4% per 1000 ft. (305 M) above sea level.
Please contact your local distributor for the appropriate orifice size you require.
Propane Pressure Settings:
The inlet supply or line pressure must be a minimum of 12.0” W.C. (2.99 kPa) and a maximum of 14.0” W.C. (3.48 kPa). The orifice is a
#54 DMS (1.397 mm) drill size.
ELEVATION
INPUT RATING
0-4500 ft. (0-1372 M)
25,000 BTU/hr (9.1 kW)
4500 ft. (1372 M) and above.
25,000 BTU/hr (9.1 kW) less 4% per 1000 ft. (305 M) above sea level.
Please contact your local distributor for the appropriate orifice size you require.
13.2 Clocking Procedure
(for high altitude derating)
IMPORTANT:
THE INPUT RATING SHOULD ALWAYS BE CHECKED WHEN FIRST FIRING THIS APPLIANCE.
Before you begin, shut off all other gas appliances including any standing pilots. Light the fireplace and wait 15 minutes. Clock the
time to burn 1ft3 of gas on the meter. Check with your gas supplier for the gas BTU content at your elevation. Input is the rate of flow
multiplied by the heating value of the gas (cubic feet/hour x BTU per cubic feet).
Note:
This assumes a dry gas meter at 1/2 psi. If using
a 2 psi dry gas meter the unit will rate lower as the calculation has to correct for the higher pressure in the meter. If the unit is over-
rated, contact your authorized Brigantia dealer. The following calculation equation gives a rough estimation as it does not correct for
temperature and pressure.
Rough Calculation Equation:
3600
X
gas caloric value
in BTU/ft
3
= Rating in
BTU
time to burn 1ft
3
gas in seconds
hr
