20
GAS CONNECTION
The VIVA L is shipped from the factory with a flexible gas connector that has a 1/2” NPT female
connection. The gas supply piping should have a separate gas shut-off valve and a 1/8” NPT plugged tapping
upstream of the valve. The VIVA L and its inlet regulator and main burner 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 psi
(3.5kPa). The VIVA L must be isolated from the gas supply piping system by closing the main control valve
during any pressure testing of the gas supply system at test pressures equal to or less than 1/2 psi (3.5kPa).
After the gas supply has been connected, use a commercial gas leak detector or apply a soapy water solution
to all the fittings to check for gas leaks. Never use a flame to test for leaks.
ROUTING OF GAS LINE
Correctly size and route the gas supply line from the supply regulator to the area where the appliance is to be
installed as per requirements outlined in the latest edition of the National Fuel Gas Code, NFPA 54 (USA) or
CAN/CSA-B1491(Canada).
Never use galvanized or plastic pipe, unless specified specifically for use with gas. Refer to the table below for
proper sizing of the supply gas line. Gas lines must be routed, constructed and made of materials that are in strict
accordance with local codes and regulations. A qualified individual such as a plumber or gas fitter should be hired
to correctly size and route thegas supply line to the appliance.
Installing a gas supply line from the fuel supply to the appliance involves numerous considerations of materials,
protection, sizing, locations, controls, pressure sediment, and other criteria. Sizing and/or installing of gas piping
should only be performed by a qualified individual.
Schedule 40 Black Iron Pipe
Inside Diameter (Inches)
Schedule 40 Pipe
Natural
Propane
Length (feet)
Gas
Gas
0 - 10
½
⅜
10 - 40
½
½
40 - 100
½
½
100 - 150
¾
½
150 - 200
¾
½
Cold Climate Insulation
For cold climate installations, seal all cracks around your appliance with noncombustible material and wherever cold
air could enter the room. It is especially important to insulate outside chase cavity between studs and under floor on
which appliance rests, if floor is above ground level. Gas line holes and other openings should be caulked or stuffed
with un-faced fiberglass insulation.
If the fireplace is being installed on a cement slab in cold climates, a sheet of plywood or other raised platform can be
placed underneath to prevent conduction of cold transferring to the fireplace and into the room. It also helps to
sheetrock inside surfaces and tape for maximum air tightness and caulk fire-stops.
21
Fine-Tuning
The recommended settings have been optimized based on extensive testing, however, additional
adjustments may be required to accommodate specific installation circumstances. For example, a north wall installation
may require slightly different settings than a south wall.
Fine-tuning can be accomplished with the stove installed and operating
. Please take care not to burn yourself on any of
the hot surfaces. Always wear gloves and other protective equipment.
It is important that the fine-tune adjustments are made only after the stove is thoroughly heated so allow the stove to burn
for at least 20-30 minutes at high fire while observing the flame.
The type of adjustments that you might try are somewhat dependent on the type of fuel that is being used. When
burning natural gas, flames that are too short or too blue will be the most common observation. When burning propane,
flames that are too long and too sooty will be most common.
Summary of Contents for VIVA L Series
Page 7: ...13 Vertical Roof Termination on angle 14 Vertical Roof Termination with bends...
Page 14: ...24 25...
Page 15: ...26 27...
Page 19: ...31 Viva 100 LG with side glass 32 Viva 120 L without side glass...
Page 20: ...33 Viva 120 LG with side glass 34 Viva 160 L without side glass...
Page 21: ...35 Viva 160 LG with side glass 36 Appendix 2 Mertik Symax controls...