IO-752:2018/EN 05.12.2018
5
2.2.2. Technical data
2.3 Protection equipment
•
Protection against flue gas outflow into the room (case of draught loss)
consists of a temperature limiter (item
8) connected in series with electric supply. This protection unit shuts down the main gas valve in the water - gas
fittings and cutting off the gas supply to the burner if the draught of the chimney duct is below 3 Pa or overpressure
occurs.
After the protection switches off the water heater,
it is necessary to turn off a water tap
. After about 10 minutes
(after cooling down the temperature limiter; this time depends, among others, on the room temperature), the
protection is
automatically unlocked.
After turning on a water tap there will flow hot water.
If activation of this protection device repeats, it is necessary to contact proper chimney sweep service
company in order to check-up the draught of a flue system.
Protection against a lack of chimney system draught must not be switched off.
The user must not make any modifications on the protection equipment.
Switching off or damaging the protection system may cause the leakage in a flue system.
•
Anti-outflow protection
– basing on ionization flame control - causes cutting off the gas supply to the burner by
means of electric system - in the case of flame disappearance.
•
Protection against the heat exchanger overheating
, i.e. the temperature limiter (item 9) actuates if the water
temperature in the heat exchanger exceeds 95
0
C, by cutting off the voltage in the supply system, and also closing
the gas supply to the burner.
It is forbidden to make any modifications in the water heater protection systems.
3. WATER HEATER INSTALLATION
After all installation works are completed, it is necessary to check up if all gas and water connection are tight.
Diagram of the water, gas and flue
– gas discharge system is presented on the Fig. 3.1.3.1
NOTE:
The wires, water and gas connection elements (filters, valves), neither flue
– gas discharge elements are not included
in water heater equipment.
Parameter
Unit
GE-19-02
GH-19-02
Nominal input power
kW
19,2
Minimal input power
kW
7,7
Nominal heat load
kW
21,8
Minimal heat load
kW
8,8
Efficiency
%
88
Nominal gas consumption
1)
of a main burner, for:
Natural gas: 2H-G20
Liquefied gas: 3+-G30/G31-28
÷30/37mbar
m
3
/h
kg/h
2,3
1,7
1)
Consumption of particular types of gas is given for reference gases, in reference conditions: (15
0
C, pressure1013 mbar) allowing for 87% of water heater efficiency
Rated gas kinetic pressure on the water heater connection
with a gas supply, for:
Natural gas: 2H-G20
Liquefied gas: 3+-G30/G31-28
÷30/37mbar
kPa (mbar)
2,0 (20)
3,7 (37)
Water operating pressure
kPa (bar)
20
÷1000 (0,2÷10,0)
Hot water outflow (
t
50
0
C)
Hot water outflow (
t
25
0
C)
dm
3
/min
dm
3
/min
3,2
÷5,7
5,7
÷11,5
Maximal temperature of outflow water
0
C
65
Flue connection (external diameter)
mm
ø114
Overall dimensions:
height / width / depth
mm
590/360/230
Hater weight
kg
9,5
Installation dimensions
mm
fig. 3.6.1
Gas connection
Inch
G 1/2
Cold water connection
Inch
G 1/2
Hot water connection
Inch
G 1/2
