21
Operations
Installations Above 2000 ft
Installation at altitudes greater than 2000 ft will require
adjustments to the gas manifold pressure.
For installations above 2000 feet the firing rate should
be reduced by 4% per 1000 feet. Example: Recom-
mended firing rate for a 4.8@3000 is 4.2 wc-in. For an
installation at 3500 feet reduce this pressure by 16% by
setting the manifold pressure to 4.2*.84 = 3.5 wc-in.
This adjustment should only be made by a properly
trained service technician. A manometer capable of
reading to the nearest 0.1 wc-in will be required for this
adjustment.
In Canada, certification for installation at altitudes over
4500 feet is the jurisdiction of local authorities.
Gas Valve Replacement
If you replace your gas valve the manifold pressure for
the new valve will need to be adjusted to match the
specification plate for the machine. Follow the installa-
tion and adjustment instructions provided with your
replacement valve. A manometer capable of reading to
the nearest 0.1 wc-in will be required for this adjust-
ment
CAUTION: All gas conversion must be done by a
qualified service person in accordance with these
instructions and in compliance with all codes and
requirements. In Canada, gas conversion shall be
carried out in accordance with requirements of the
Provincial Authorities having jurisdiction and in
accordance with the requirements of the CAN/GGA-
B149.1 and .2 installation code.
ATTENTION: Toutes les conversions au gaz
doivent être effectuées par un technicien qualifié
conformément à ces instructions et en conformité
avec tous les codes et toutes les exigences. Au
Canada, la conversion au gaz doit être effectuée
conformément aux exigences des autorités
provinciales compétentes et conformément aux
exigences du code d'installation CAN/GGA-B149.1
et .2.
MANUAL, OPERATOR, HOTSY, STAT ELEC NG-LP 9.808-037.0-A
