AHRI GAS-FIRED COMMERCIAL WATER HEATER, Руководство по установке и эксплуатации

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11
Minimum Clearances
The location of this water heater is of the utmost importance. Before installing this water heater, you should read the
Installation section of these instructions. After reading these Installation and Operating Instructions, select a location for
the water heater where the floor is level and is easily accessible to water lines, gas supply (type identified on the rating
plate), an adequate open drain, and a chimney or exhaust gas vent.
DO NOT locate the water heater where water
lines could be subjected to freezing temperatures . Make sure the cold water pipes are not located directly above
the gas control box or any other electrical control so that condensate during humid weather does not drip on the
controls
.
This installation must allow access to the front of the water heater and adequate clearance must be provided for servicing
and operating this water heater. The water heater may be installed on either a combustible or non-combustible floor. If
the water heater is to be installed directly on carpeting, it must be installed on top of a metal or wood panel (or equivalent)
extending beyond the full width and depth of the appliance by at least three (3) inches (
7.6 cm) in any direction or, if the
appliance is to be installed in an alcove or closet, the entire floor must be covered by the panel. The minimum clearances
to combustibles for this water heater are given on the following pages. A minimum of 24 inches front clearance must be
provided for inspection and servicing. Adequate clearances must be provided for easy access to controls by service
personnel to enable proper cleaning, servicing, and operation of the water heater. Under no circumstances is the front of
the water heater to be placed in a position where the burner tray assembly cannot slide out for removal when servicing.
This water heater MUST be installed indoors out of the wind and weather.
Note: For California installation this water heater must be braced, anchored, or strapped to avoid falling or
moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained
from DSA Headquarters Office, 1102 Q Street, Suite 5100, Sacramento, California 95811.
Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors.
Examples of some typical compounds that are potentially corrosive are: spray can propellants, cleaning solvents,
refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes and process
chemicals. These materials are corrosive at very low concentration levels with little or no odor to reveal their presence.
DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED
BY THE WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE HAS OR WILL OCCUR. DO
NOT STORE ANY POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER.
NOTICE
The National Fuel Gas Code (ANSI Z233.1- latest edition) or in Canada The Natural Gas or Propane
Installation Code CAN/CGA (B149.1, B149.2- latest edition), expressly prohibits the following:
a. Installation of a water heater in a bathroom, bedroom, or any occupied room normally kept closed.
b. Installation of a water heater in a garage, unless the unit is installed so that the burner and ignition devices are
at least eighteen (18) inches ( 45.8 cm ) above floor level and protected to avoid damage by a moving vehicle.
If the buildings cold water supply has a back-flow preventer, check valve or water meter with check valve, provisions
for thermal expansion of water in the hot water system must be provided.
CAUTION
IF COMBUSTIBLE FLOORING IS USED, A THERMAL BREAK LEG KIT MUST BE INSTALLED BEFORE
SETTING WATER HEATER IN PLACE. THE APPROPRIATE LEG KIT HAS BEEN INCLUDED WITH THIS
WATER HEATER.
WARNING