Adjustments; Set Gas Input Rate - Bryant 351DAS Installation, Start-Up & Operating Instructions

Fig. 29—Inducer Housing Drain Tube
Fig. 30—Filling Condensate Trap
IV. ADJUSTMENTS
WARNING: The conversion from natural gas to pro-
pane gas or propane gas to natural gas shall be installed
by a qualified service agency in accordance with the
manufacturer's instructions and all applicable codes and
requirements of the authority having jurisdiction. If the
information in these instructions is not followed exactly,
a fire, explosion, or production of carbon monoxide may
result causing property damage, personal injury, or loss of
life. The qualified service agency is responsible for the
proper installation of this furnace with these instructions.
The installation is not proper and complete until the
operation of the converted appliance is checked as
specified in these manufacturer's instructions.
AVERTISSEMENT: La conversion du gaz naturel au
gaz propane ou du gaz propane au gaz naturel doit être
effectuée par une agence de service qualifiée conformé-
ment aux instructions du fabricant et à tous les codes et à
toutes les exigences applicables de l'autorité compétente.
Si ces instructions ne sont pas observées exactement, il
peut en résulter un incendie, une explosion ou une
production d'oxyde de carbone pouvant résulter en dom-
mages matériels, lésions corporelles ou mort. L'agence de
service qualifiée est responsable d'installer correctement
cette
L'installation n'est ni correcte ni complète tant que le
fonctionnement de l'appareil converti n'a pas été vérifié
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de la manière précisée dans ces instructions du fabricant.
A. Set Gas Input Rate—Natural Gas (See Section IV. B
for Propane Gas Adjustment.)
Furnace gas input rate on rating plate is for installations at altitudes
up to 2000 ft.
In the U.S.A., the input ratings for altitudes above 2000 ft must be
reduced by 2 percent for each 1000 ft above sea level.
In Canada, the input ratings must be derated by 5 percent for
altitudes of 2000 ft to 4500 ft above sea level.
Furnace input rate must be within ±2 percent of input on furnace
rating plate adjusted for altitude.
1. Determine natural gas orifice size and manifold pressure for
correct input.
a. Obtain average yearly heat value (at installed altitude)
from local gas supplier.
b. Obtain average yearly specific gravity from local gas
supplier.
c. Find installation altitude in Table 9.
NOTE: For Canada altitudes of 2000 to 4500 ft, use U.S.A.
altitudes of 2001 to 3000 ft in Table 9 or 10.
d. Find closest natural gas heat value and specific gravity
on Table 9.
e. Follow heat value and specific gravity lines to point of
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intersection to find orifice size and manifold pressure
settings for proper operation.
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fournaise conforément à ces instructions.