Hatco POWERMITE PMG-100 Installation, Operating, Service And Parts Manual page 11

Minimum Clearance Requirements: {Exigences quant au dégagement minimum:}
Floor Top
{Sol} {Dessus}
6"* (152 mm) 1" (25 mm)
* Includes legs supplied with booster heater {Comrend pieds fournis avec appareil de chauffage auxiliare}.
† Minimum clearance of 8" (203 mm) from the side of the appliance where the vent is installed.
High Altitude Installation and Operation
Atmospheric conditions at elevations above 2000 ft.
(610 m) have an effect on the performance of most
gas fired products. For this reason, historical models
for altitude de-rating were developed for gas
appliances with atmospheric burners. The National
Fuel Gas Code, ANSI Z223.1 is an accepted model
which requires a de-rating of 4% per 1000 ft.
(305 m) elevation when no testing to the contrary
exists for that product. This could require modifying
the equipment and adjusting settings in the field to
achieve de-rating. Testing has shown this to be a
very conservative approach.
Manufacturers discourage
adjustments in order to maintain a level of
performance and quality designed into the product.
For these and other reasons, testing was
underwritten through CSA International to verify an
improved satisfactory performance with little or no
modification to effect input rate or control. The
following text and charts are a result of this testing
and should be used during application sizing and
installation.
• The PMG-100 can operate at better levels than
ANSI Z223.1 without manifold pressure setting
adjustments or orifice changes up to the 8500 ft.
(2593 m) elevation for both natural gas and liquid
propane gas units. Above this level only a slight
decrease in manifold pressure may be needed to
meet the approved BTU rate. This is shown in
the Altitude Summary chart. Also, note that GPH
capacity will be reduced and a guideline is given
as to the percent of sea level capacity expected.
For Canadian installations between 2000-4500 feet
(610-1370 m) de-rate unit by 10% to 94,500 BTU.
{Pour les installations au Canada entre 610 et 1370
m (2000 et 4500 pi) reclassifier l'appareil de 10% à
94 500 BTU.}
Left Side
{Côté gauche}
2" (51 mm)
unnecessary field
9
Right Side
{Côté droit} {Devant}
2" (51 mm) 20" (508 mm)
• PMG-200 will require orifice changes at levels
shown in the Altitude Summary chart. This
follows the 4% de-rating scheme outlined in
ANSI Z223.1 for both natural gas and liquid
propane gas. Also note that the GPH capacity
will be reduced and a guideline is given as to the
percent of sea level capacity expected.
For Canadian installations between 2000-4500 feet
(610-1370 m) de-rate unit by 10% to 175,500 BTU.
{Pour les installations au Canada entre 610 et
1370 m (2000 et 4500 pi) reclassifier l'appareil de
10% à 175 500 BTU}
Orifice Kits for altitude installations may be ordered
through Hatco Customer Service. Please call for
orifice sizing information.
INSTALLATION
Front Back
{Derrière}
2" (51 mm)†
Form No. PMG-100/200M-0805