85-03-01108
FV46
Page
49
Gas Input Rate Verification
Natural Gas Input Rate Verification
1.
Verify main orifice size. The main orifice body has the orifice hole size stamped on it. NG orifice size shall be #37
(rear burner) and #44 (front burner) for all elevations in between 0-2000ft. NG orifice size shall be #38 (rear
burner) and #44 (front burner) for all elevations exceeding 2000ft.
2.
Verify that the Manifold Gas Pressure is within 3.5" WC +/- 1/8". Once setup, read the main home gas supply
meter reading.
3.
Write the initial reading here >> initial gas meter reading
Turn off all other appliances and their pilot flame
in the home.
4.
Run this appliance for a period of 30 minutes on maximum flame size. Turn off main burner and pilot flame.
Read the main home gas supply meter reading after the 30 minutes of burn time.
5.
Write the reading here >> final gas meter reading Calculate the following:
6.
FINAL GAS METER READING - INITIAL GAS METER READING...Subtract initial gas meter from final gas meter
reading. This will yield the number of Therms used during the 30-minute burn time.
7.
Multiply the result in Item #6 by 100,000.
8.
Multiply the result in Item #7 by 2. Write down the result here >>
9.
The result in item #8 shall be at least maximum input rate (45,500 Btu) for altitudes below 2000 Feet. For
altitudes higher than 2000 feet, the result in item #8 shall be at least 44,500 Btu.
LPG Input Rate Verification
Verify main orifice size. The main orifice body has the orifice hole size stamped on it. LPG orifice size shall be 1/16” (rear burner)
and #55 (front burner) for all elevations.
Verify that the manifold gas pressure is within 10.0" WC +/- 1/8".
High Altitude De-Rating
Consult with your local gas supplier regarding high altitude derating necessity. It may not be necessary to
change orifice sizes if the gas supply is already adjusted for high altitude usage.
If you are de-rating this appliance at a high altitude, attach the High-Altitude De-Rating Label, supplied in the Owner’s
Manual Packet, to the back surface of the listing label plate located in the air gap below the glass frame. If you are also
converting the Fireplace for LP Gas attach the labels included with the conversion kit to the same surface.
Prior to attaching the label, fill in all the information that is requested on the label.
For installations from 610-1370 meters (2000-4500 ft.) the orifice sizes (DMS) for Natural Gas are #38(Rear) and
#44(Front) and Propane Gas are 1/16” (Rear) and #55(Front), respectively. See data plate for additional information. For
high altitude installations consult the local gas distributor or the authority having jurisdiction for proper rating methods. If
the installer must convert the unit to adjust for varying altitudes, the information sticker must be filled out by the installer
and adhered to the appliance at the time of conversion."
This appliance has been converted for use at an altitude of:
Orifice size:
Manifold Pressure:
Input (Btu/h):
Fuel Type:
Date of conversion:
Converted by:
Cet appreeil a été converti au ____
Injecteur ________
Pression à la tubulure d'alimentation _____________
Déoit calorifique ______________
Summary of Contents for FV46
Page 2: ...85 03 01108 FV46 P a g e 2 HOMEOWNER NOTES...
Page 16: ...85 03 01108 C FV46 Page 16 Figure 3 9 Figure 3 8...
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