FORWARD
This design complies with CAN
Instalation, operation and maitenance information is provided in this manual. Installation and operation instructions should be thoroughly reviewed before proceeding with installation of the BOSCH instantaneous gas water heater.
The BOSCH instantaneous gas water heater is designed to operate on natural or propane gas; however, make sure that gas on which heater is to operate is the same as specified on the heater’s model/rating plate.
In addition to these instrutions,the water heater shall be installed in accordance with
INSTALLATION INSTRUCTIONS
Note: Proper plumbing, venting, gas connections and an adequate supply of combustion air are required for safe and reliable operation. Ability equivalent to that of a licensed tradesman in the field involved is required for installation and/or servicing of these water heaters.
LOCATION
Before installing the BOSCH instantaneous gas water heater consideration must be given to proper location. The BOSCH W125K... instantaneous gas water heater may be installed to supply hot water to remote locations. Location should be as close to a chimney or gas vent as practical, in an area with an adequate air supply and as centralized with the piping system as possible. The heater should not be located in an area where it will be subject to freezing. The heater should be located in an area where leakage of the heater or its connections will not result in damage to the area adjacent to the heater or to lower floors of the structure.
Note: When such locations can not be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the heater. The pan must not restrict combustion air flow.
AIR REQUIREMENTS
For safe operation, sufficient air for combustion, ventilation and dilution of flue gases must be available. An insufficient supply of air will result in a yellow luminous burner flame, causing carboning or sooting of the heat exchanger.
In unconfined spaces, in buildings of normal construction, infiltration normally is adequate to provide air for combustion, ventilation and dilution of flue gases. However, a confined space must be provided with two permanent openings to provide combustion and ventilation air to the appliance. Each opening shall have a free area of on square inch per 1,000 Btu/hr of total input rating of all the appliances in the enclosure, but not less than 100 square inches. One opening shall be within 12 inches of the top and one within 12 inches of the bottom of the enclosure.
For either a confined or unconfined space in a building of tight construction, with inadequate infiltration, air must be drawn from the outdoors or from spaces that freely communicate with the outdoors. Two permanent openings located as indicated above are to be provided as follows:
1.When communicating with outdoors directly, or by means of vertical ducts, each opening shall have a free area of not less than one square inch per 4,000 Btu/hr of total input of all appliances in the space.
2.When communicating with outdoors by means of
horizontal ducts, each opening shall have a free area of not less than one square inch per 2,000 Btu/hr of total input of all appliances in the space.
3
