1. When facing the heater, the cold-water inlet is on your right and the hot water outlet
is on your left. Although water piping throughout your structure may be other than
copper, we recommend that copper piping be used for at least 0.92 m before and
after the heater (follow local codes). Keep water inlet pipe to no less than 1/2"
diameter to allow the full flow capacity.
2. Remember that water pressure must be sufficient to activate the heater when
drawing hot water from the top floor. If the hot and cold connections to the heater are
reversed, the heater will not function. 1/2''Copper or brass fittings work best when
connected to the connectors. The flexible type connectors will make instillation easier
and seals to the water valve by means of a union connection with a washer type
gasket at the joint. No pipe dope or thread tape is to be used at this joint. Be certain
there are no loose particles or dirt in the piping. (Fig. 10)
3. Water pressure must be sufficient to activate the water heater, the maximum
pressure for the appliance is 10bar, even with the effects of water dilation, the water
pressure in the appliance shall not exceed this value.
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Hot water outlet
Use a flexible or rigid pipe to connect with the sprayer without valve. If a valve or switch
is connected to the sprayer, the outlet pipe shall not use heat and pressure unendurable
material such as plastics, aluminum pipes, so as to avoid the pipe from breaking and
scalding the user.
3. Installation of the flue:
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Flue Duct Installation of Forced-Exhausted Gas Water Heater (B23, B53 type)
This product is forced exhaust type gas water heater; it can be used only after the flue
duct is installed according to the requirements strictly and can exhaust the waste gas to
the outdoor area. It's not allowed to use the gas water heater without installing the flue
duct correctly. Please follow the below requirements during the installation of flue duct.
1. Refer to Fig.11 about the installation method. If the flue duct is too short, you can
extend it aptly. Check the flue duct and see if there is any damage or leakage every
half a year.
2. The length of the flue duct should be less than 8m,
3. The horizontal distance of the flue duct is the shorter the better. The flue duct end
should have a 2° downward inclination (Fig. 11), so as to let the condensing water
flows out.
4. The distance between the flue duct and the combustible materials should be more
than 150mm. If the flue duct needs to get through the combustible materials or wall,
it should use the heat shield material to pack the flue duct with the thickness
over20mm. (Refer to Fig.8)
5. No cement between the flue duct and wall for the convenience of maintenance.
6. The flue duct should be fixed tightly. The connection part could use self-adhesive foil
to avoid the waste gas going back into the room.
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