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let 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. 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. 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 (Figure 5.9).
3. Water pressure must be sufficient to ac-
tivate the water heater, the maximum
pressure for the appliance is 10 bar, even
with the effects of water dilation, the water
pressure in the appliance shall not exceed
this value.
• Hot water outlet
1. It is recommended that copper pipe is
used to connect the hot water outlet to
the installation hot water distribution pipe
work.
Installation of the flue
• Flue duct installation of forced-exhausted
gas water heater (C13 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 and
can exhaust the waste gas to an 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. The appliance is set up for connection to
a 60/100 coaxial air intake and flue gas
exhaust ducting system. For split types of
suction and exhaust, using the specified
INSTALLATION
adapter (Figure 5.10). If the specified adapt-
er is used, the path of the flue gas exhaust
and combustion air channels must be the
same and must leave the installation room
on the same wall at the minimum distance.
If the flue duct is too short, you can extend
it (Figure 5.11 and Figure 5.12). Check the
flue duct and see if there is any damage or
leakage every year.
2. The length of the flue duct should be
less than 3 m, and the number of elbows
should not be more than 3 (one elbow is
the equivalent to 1 m of straight pipe).
3. The horizontal distance of the flue duct is
the shorter the better. The flue duct end
should have 2° downward inclination (Fig-
ure 5.12), so as to let the condensing water
flow out.
4. The distance between the flue duct and
combustible materials should be more
than 150 mm. 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 a thickness over
20 mm (Refer to Figure 5.4).
5. It is a UK legal requirement that the flue is
sealed to the wall using a sand and cement
mortar.
6. The flue duct should be fixed tightly.
Self-adhesive may be used on joints the
waste gas going back into the room.
Figure 5.10
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