3
3. Install the appropriate LP/Propane gas burner orifices into
the gas manifold assembly.
NOTE:
To prevent cross threading, hand tighten the orifices into
the gas manifold assembly until snug, then tighten with a wrench.
WARNING:
Do not use Teflon tape or pipe joint compound
on the orifice threads. The hole in the orifice may
become blocked and cause fire, explosion, property
damage, carbon monoxide poisoning, personal
injury, or death.
4. Reinstall the gas manifold assembly to the burner assembly
with the 4 screws, that were removed earlier.
NOTE:
It is
important that the center of the orifices are aligned with the
center of the burners.
5. Reconnect the gas piping to the gas valve inlet.
6. Reconnect the wires to the gas valve terminals.
GAS PRESSURE ADjUSTMENT
Measuring the Supply Gas Pressure
1. Turn OFF the gas supply at the manual valve located on the
outside of the unit.
2. Using a 3/16“ Allen wrench, remove the plug from the inlet
pressure tap (INLET side of gas valve). See Figure 3.
3. Install an 1/8” NPT pipe thread fitting, which is compatible
with a Manometer or similar pressure gauge.
4. Connect the Manometer or pressure gauge to the Inlet Pressure
Tap.
5. Turn ON the main gas supply at the manual valve.
6. Check and adjust the incoming gas line pressure to 11.0-14.0
inches Water Column for LP/Propane gas.
7. Turn OFF the gas supply at the manual valve.
8. Disconnect the Manometer or pressure gauge.
9. Remove the NPT fitting and reinstall the INLET pressure tap
plug. Hand tighten the plug first to prevent cross-threading.
Tighten with 3/16” Allen wrench.
High Fire
Cap Screw
High Fire
Adjustment Screw
Low Fire
Cap Screw
Low Fire
Adjustment Screw
Spring
Spring
Figure 2. Gas Valve Conversion
Figure 3. Inlet & Manifold Pressure Tap Locations
Inlet
Pressure
Tap
Manifold
pressure
Tap
Model VR9205Q1127
ON/OFF
Switch
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Never test for gas leaks with an open flame.
Use a commercially available soap solution
made specifically for the detection of leaks
to check all connections. A fire or explosion
may result causing property damage, personal
injury or loss of life.
WARNING:
RISQUE D’INDENDIE OU D’EXPLOSION
Le non-respect des avertissements de sécurité
pourrait d’entraîner des blessures graves, la mort
ou des dommages matériels.
Ne jamais utiliser une flamme nue por
vérifier la présence des fuites de gaz. Pour la
vérification de tous les joints, utiliser plutôt une
solution savonneuse commerciale fabriquée
spécifiquement pur la détection des fuites de gaz.
Un incendie ou une explosion peut entraîner des
dommages matériels, des blessures ou la mort.
AVERTISSEMENT
:
HIGH ALTITUDE CONVERSION
(FOR NATURAL GAS INSTALLATIONS AT
ALTITUDES BETWEEN 2,000 & 4,500 FT)
When converting to high altitude with natural gas, conversion
requires replacement of the burner orifices and/or adjustment
of the manifold pressure. For detailed instructions, refer to the
“High Altitude Application” section of the Installation Instructions
supplied with the furnace.
