Mininum Clearance Requirements - Hatco Powermite PMG-100 Manuel D'installation Et D'utilisation

English
Combustion/Ventilation Air
The flow of air to the heater for combustion and ventilation
MUST NOT be obstructed. Air vents on the bottom and side
of the unit should never be blocked. All panels should be
in place during normal operation for optimal performance
and safety.
This unit is designed to vent to the outside or into an open
Equipment Hood, and is intended for commercial food
service water heating only. NOT FOR RESIDENTIAL USE.
See "Venting Installation" in the INSTALLATION section of
this manual.
Flue gases exit top side or back of this unit and must not
be obstructed, specified clearances must be maintained
for safe operation. See "Venting Installation" in the
INSTALLATION section for vent piping alternatives.
The use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel (polyphenylsulfone) in nonmetallic venting
®
systems is prohibited. Covering non-metallic vent pipe and
fittings with thermal insulation is also prohibited.
The Booster Water Heater must be located in an area that
allows for an adequate supply of air for proper combustion
and ventilation in accordance with Section 5.3 and 7.2.2 of the
National Fuel Gas Code NFPA54/ANSI Z223.1 or applicable
provisions of the local building codes. Only a single booster
appliance may be installed in this manner. Installations under
the jurisdiction of Canadian CSA-B149.1, Natural Gas and
Propane Installation Code, require a gas interlock tied into
the ventilation hood system.
Minimum Clearance Requirements
Floor*
6"
(152 mm)
* Includes legs supplied with Booster Water Heater.
† Minimum clearance of 8" (203 mm) from the side of the appliance where the vent is installed.
PMG100200M-0222
WARNING
CAUTION
Top Left Side
1" 2"
(25 mm) (51 mm)
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 that 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 unnecessary field 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.
• The 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.
Orifice Kits for altitude installations may be ordered through
Hatco Customer Service. Please call for orifice sizing
information.
Right Side
2"
(51 mm)
9
INSTALLATION
Back †
Front
20" 2"
(508 mm) (51 mm)