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7.3. Connecting the appliance to the water supply system
7.3.1. In order to increase the appliance's working lifespan and improve its exploitation characteristics is
recommended to install a water filter by the appliance's inlet (see scheme 6)
7.3.2. In order to facilitate further technical service it is necessary to install by the appliance's inlet a stop
valve on the cold water supply pipeline. The stop valve must be easily accessible.
7.3.3. Connecting appliance to the water supply system should be effectuated with metallic tubes or
flexible hoses with inner diameter not less than 13 mm. The length of the flexible hose for water inlet or
output should be not more than 2,5 m. Rules of flexible hoses installation are represented in the p. 7.6, page
13.
7.3.4. Cold water connection must be effectuated to the fitting of cold water supply 5, and hot water
connection - to the fitting of hot water outlet 7 (see scheme 1, 2), having previously removed protective gags
from the fittings.
7.3.5. Connection of pipes of hot and cold water should not be accompanied by mutual interference of
pipes and parts of the appliance in order to avoid displacement or breakage of separate details and parts of the
appliance and disturbance of water system's air-tightness.
7.3.6. Before connecting the appliance to the water supply network it is necessary to open the cold water
supply for some time to clean the pipe of water supply to the appliance and prevent unwanted entering of the
contamination and sediments at its first starting up.
7.3.7. After connecting the pipelines to the appliance it is necessary to test joints on air-tightness. Air-
tightness check is done as follows:
a) Open the hot water tap;
b) Open the cold water stop valve by the appliance's inlet;
c) After filling the appliance's duct with water, close the hot water tap and examine the joints.
Leakage in the joints is unacceptable. It is also recommended to examine the joints of the appliance's
water duct, as their air-tightness disturbance is possible in case of the appliance's transportation and
storage conditions violation. Tighten the joints if necessary.
7.4
Connecting the appliance to the gas system
7.4.1. In order to increase the appliance's working lifespan and improve its exploitation characteristics is
recommended to install a gas filter by the appliance's inlet (see scheme 6, page 11)
7.4.2 In order to ensure stable operation of the appliance it is necessary to effectuate the gas line connection
with metal pipes or flexible hose with an internal diameter not less than 13 mm. The flexible hose for
supplying gas, in accordance with the SNiP 42-01-2002 requirements must be resistant to the supplied gas at
set temperature and pressure. Flexible hose length should not be more than 2.5 meter. Flexible hoses
installation rules are given in p. 7.6. Pipes or a flexible hose should be connected to the fitting 6 (see scheme.
1,2, page 6) after removing the protective gag from it.
7.4.3. Installation of the gas pipelines' dismountable joints should be kept to a minimum.
7.4.4. When connecting a gas line to the appliance, there should be obligatory a stop valve installed by the
appliance's inlet. The stop valve must be easily accessible.
7.4.5. Connecting the gas pipe must not be accompanied by mutual interference of pipes and parts of the
appliance in order to avoid displacement or breakage of individual details and parts of the appliance and a
violation of the gas line air-tightness.
7.4.6. After connecting the appliance to the gas line, the joints of connection of the appliance with the pipes
should be tested on air-tightness. Air-tightness check in the joints of gas supply is made on non-operating
appliance and when the appliance's inlet stop valve is open. Gas leakage is not allowed.
Technical staff manual
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