CONTROL
If the heater or the controls have been subjected to flooding, shut off the gas at the manual
The heater operates under a fully automatic control. Once the desired water temperature has been selected, the gas control will maintain that temperature within close limits.
DO NOT TAMPER WITH THE GAS CONTROL!
CAUTION
Hydrogen gas can be produced in a hot water system served by this heater that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance. If hydrogen is present, there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow. There should be no smoking or open flame near the faucet at the time it is open.
3.Do not use this heater as a replacement for an existing boiler installation.
4.Do not introduce toxic chemicals such as those used for boiler treatment into the potable water used for space heating.
5.If the space heating water system requires water with temperatures in excess of 140°F, a mixing valve or other means must be installed in the potable hot water supply to temper the water and reduce scald hazard potential.
6.If the heater is installed with a
7.Proper sizing of the water heater for the given space and potable heating application is essential to ensure adequate heating capacity. The sizing and installation of such combination system must be performed by qualified personnel and be in accordance with public utility requirements and/or Codes having jurisdiction.
The sizing of the water heater should be based on the design heat loss of the structure to be heated plus the potable water requirements.
IT IS IMPORTANT THAT THE WATER HEATER USED BE OVERSIZED TO ALLOW ADEQUATE HEATING AND POTABLE WATER HEATING CAPACITY.
INSTALLATION INSTRUCTIONS FOR WATER HEATERS APPROVED FOR SPACE HEATING AND POTABLE WATER HEATING
When using this water heater in the application of a combination space and potable water heating system, be sure to follow instructions provided with the water heater and the manual shipped with the air handler.
NOTE the following warnings:
1. The piping and components connected to the water |
heater for the space heating applications shall be |
suitable for use with potable water. The system should |
be installed with new |
pumps, valves, fittings, solder, gluing and pipe sealant |
that are not completely compatible with potable water |
piping. |
2. A water heater which will be used to supply potable |
water must not be connected to any heating system or |
components previously used with a |
CHECK VALVE
HOT
WATER
TO
HOUSE
DIRECT
VENT
WATER
HEATER
CIRC. PUMP
COLD TO
WATER HEATER
AIR HANDLER
heating appliance. Do not use: piping that has been |
treated; broiler seal chromates; or other chemicals. |
RADIATOR OR RADIANT FLOOR PIPING ARE VIABLE ALTERNATIVES TO AIR HANDLER.
Figure 9
– 11 –
