ISU-217:2004 cz
ęść
angielska
40
model electromagnet is positive, replace
the gas-water unit with the new one
•
plugged water filter
•
remove the impurity
•
damaged elements in gas-water
unit
⇒
damaged water membrane
⇒
damaged control mechanism of gas
valve head
⇒
plugged gas flow to the ignition
burner
•
replace the gas-water unit with the new
one
2. Heater does not
heat the water
sufficiently
•
small flame on the burner
•
check the gas pressure in the installation
•
check the setting of gas pressure
regulator
•
impure burner
•
remove the impurity from the cover
plates and nozzles of the burner
•
impure ribs in the heat exchanger
•
remove the impurities from the ribs
•
descale
•
improper gas content
•
check if main burner, ignition burner
and gas-water unit are designed for gas
being used
•
excessive discharge of water
•
check small water flow – if the flow is
greater than 1,5 gal/min , it must be
adjusted by a small water discharge
screw
•
damaged elements of gas-water
unit
•
replace the gas-water unit with the new
one
3. Heater
overheats
the water
•
badly set gas pressure regulator
•
readjust the gas pressure regulator to the
local conditions
•
improper gas content
•
check if the main burner, ignition burner
and gas-water unit are adapted to the gas
being used
•
small discharge of water
•
check small water flow – if the flow is
smaller than 1,5 gal/min , it must be
adjusted by a small water discharge
screw
•
mechanical damage of mechanism
controlling gas valve head
•
replace the gas-water unit with the new
one
4. The heater does not
shut off after
closing the water
flow
•
mechanical damage of elements in
gas-water unit
•
replace the gas-water unit
5. Explosive
ignition
of main burner
•
small flame on ignition burner
•
increase the flame on the ignition burner
by means of a adjusting screw.
•
Plugged nozzle of ignition burner –
clean or replace
•
Plugged inflow of gas to the
ignition burner in the gas-water
unit
•
Replace gas-water unit with the new one
6. There are leaks in
the gas circuit in
the heater
•
Damaged sealing ring at the inlet of
gas-water unit
•
Replace the sealing ring with the new
one
