Pre-Installation Information; Installing Above 000 Feet; Installation Planning; Orifice Sizes, Pressures And Btus - Majestic 490IDVNV Installation And Operating Instructions Manual

PRE-INSTALLATION INFORMATION

INSTALLING ABOVE 2000 FEET
• In the USA, the appliance must be derated 4% for every 1,000 ft above 2,000 ft elevations.
• In Canada, these appliances are certified for altitudes of 0 – 2000 ft, and must be de-rated by 10 percent for installations
between 2000 and 4,500 ft. (derate an additional 4% for every 1,000 ft. above 4,500 ft. elevations).

ORIFICE SIZES, PRESSURES AND BTUs

NATURAL GAS
Manifold Press: (W.C.)
Maximum Supply Pressure
Minimum Supply Pressure
Model Number
Max. Btu/hr Input
Min. Btu/hr Input
Orifice sizes (as shipped)
The 490IDVNV, 490IDVPV, 380IDVNV, and 380IDVPV are equipped with a variable output gas control.
NOTE: 490IDVNV, 490IDVPV, 380IDVNV, and 380IDVPV inserts work without any electrical supply.
Blower must be attached to 110/120 VAC.

INSTALLATION PLANNING

Plan for the installation of your insert. This includes determining the size of fireplace in which unit is to be installed, length of
venting to be used, and finishing details, and whether any optional accessories (i.e. wall switch, or remote control) are desired.
Consult your local building code agency to ensure compliance with local codes, including permits and inspections.
6
PROPANE GAS
3.5" Manifold Press: (W.C.)
10.5" Maximum Supply Pressure
4.5" Minimum Supply Pressure
490IDVNV
NATURAL
40,000
26,500
#30
10"
13"
11"
490IDVPV 380IDVNV
PROPANE NATURAL
37,500 30,500
29,000 20,500
#50 #35
380IDVPV
PROPANE
28,000
22,000
#53
57D0215