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filled as soon as cold water flows
from all taps;

3. Close all hot water drain taps.

3.1.2 Putting into operation:

1. Check whether the device has been

filled with water and whether the
gas supply to the water heater is
open;

2. Turn the temperature control knob

clockwise and place the control knob
in the ‘PILOT’-position (

);

3. Remove the outer and inner door of

the combustion chamber.

4. Keep the control button pushed-in

and press the piezo-ignitor several
times until the pilot burns (see
drawing 6);

5. Keep the control button (

) pushed-

in for approximately 20 seconds.
After releasing the button the pilot
should remain burning. If the pilot
extinguishes you should wait 5
minutes before repeating the ignition
procedure;

6. Subsequently remount the inner and

outer door; see “Mounting the inside
door”;

7. Turn the control button to the ‘ON’

( ) position;

8. Place the temperature control button

in the correct position, preferably
position 4 (approximately 60°C). The
appliance will now operate fully
automatically;

3.1.3 Use

The appliance is under water supply
pressure (with a maximum of 8 bar).
The amount of cold water that is added
is equal to the amount of hot water
used. The gas control block
automatically regulates the gas supply.
The main burner will ignite as soon as a
reduction in water temperature is
sensed by the control thermostat. The
main burner will shut down as soon as
the water temperature returns to the
preset temperature.

Position 1 = approximately 30°C
Position 2 = approximately 40°C

Position 3 = approximately 50°C
Position 4 = approximately 60°C
Position 5 = approximately 70°C
Higher water temperatures will cause
more scale build up in the appliance. It is
for this reason that it is recommended to
place the temperature control knob in
position 4 as the accumulation of scale
will be reduced at lower temperatures.
In addition a safety thermostat has been
fitted. This thermostat completely shuts
off the gas supply if the water
temperature reaches 82°C, also
extinguishing the pilot burner.

3.1.4 Putting out of operation

1. For short periods of time the control

knob should be turned to (

); the

pilot keeps burning;

2. For longer periods of time the knob

should be turned to the (

) position;

the pilot is extinguished;

3. Close the gas tap in the supply pipe.

In case of longer interruptions or in
the event of risk of frost it is
recommended to also close the cold
water tap and to drain the appliance
after cooling (open the drain tap; it is
possible to connect a drain hose to
the drain tap; open the nearest hot
water drain point to prevent
airlocks).
To be able to drain the appliance
completely it should be disconnected
and tilted slightly in the direction of
the drain tap.

3.1.5 Maintenance

The inlet combination has to be tested
regularly by relieving it (via the relief
button). The water has to flow out in a
forceful jet. Check whether the
discharge pipe is open.
We recommend a service agreement on
an annual basis.

To be able to order spare parts it is
important to note the type of appliance
as well as the serial number of the
appliance. Based on this information the
data concerning the spare parts can be
determined.

Summary of Contents for PRV 30 NORS G

Page 1: ...INSTALLATION AND USER INSTRUCTIONS HOTWATERSTORAGEHEATERS UNITEDKINGDOM IRELAND MODELS PRV 30 NORS G PRV 40 NORS G PRV 50 NRRS G ...

Page 2: ...ly harm Installation and commissioning should be carried out by a qualified competent installer The type of gas and the value at which the appliance is set standard in the factory are registered on the rating plate The appliance may only be installed in a room if this room meets the ventilation requirements STATE WATER HEATERS accepts no responsibility for warranty service and or product liability...

Page 3: ...ner door 15 2 3 Pilotadjustment 15 2 4 Putting out of operation 15 2 5 Temperature regulation 16 2 6 Setting the nominal heat input 17 2 7 Conversion procedure 18 2 8 Maintenance 19 2 8 1 Sacrificial anode 19 2 8 2 Cleaning 19 2 8 3 Decalcification 20 2 8 4 Spare parts 20 2 9 Inletcombination 20 2 10 Fault finding 20 2 10 1 Safety thermostat 20 2 10 2 Flue down draught safety device 21 2 10 3 Hot ...

Page 4: ...When the appliance is filled with water it continuously is under water pressure As hot water is drained from the tank cold water is added immediately A flue baffle has been placed in the flue tube to improve heat transfer The flue gasses pass their heat on to the water by means of radiation and convection The flue gasses are guided to the chimney via the draught diverter The exhaust of the flue ga...

Page 5: ...e tube 5 Glass lined tank 6 Gas control valve 7 Cold water inlet 8 T P valve connection 9 Outer casing Figure 1 Cross section of the heater 10 Flue baffle 11 Sacrificial anode 12 Drain tap 13 Atmospheric burner 14 Pilot light burner with thermocouple AOS 0478 ...

Page 6: ...a combustion products discharge safety device It is the function of the safety device to prevent flue gasses from the water heater entering the room where the water heater has been placed instead of passing through the flue to outside atmosphere The gas supply is disconnected as soon as the device is activated by hot gasses flowing over the sensor After the cause of the re entry of flue gasses has...

Page 7: ...l valve 1 Combustion products discharge safety device thermostat 2 Sensor Combustion products discharge safety device thermostat 3 Thermocouple with built in interrupter 4 Thermocouple 5 Gas control block 6 Reset button 7 Pilot burner 8 Temperature regulator knob AOS 0479 ...

Page 8: ...RS PRV 40 NORS PRV 50 NRRS seedraw 3 A 1280 1370 1670 B 1120 1210 1540 D 465 515 515 F 545 595 605 G 80 80 100 K 325 325 380 L 270 295 395 M 1160 1250 1590 N 1160 1250 1590 R 230 230 255 S 945 1030 1380 V 205 205 205 1 Cold water inlet 2 Hot water outlet 3 Gas control valve 4 Drain tap 5 T P valve tapping All dimensions are given in mm rounded off on 5 mm See figure 3 ...

Page 9: ...9 Figure 3 Dimensions AOS 0481 ...

Page 10: ...essure mbar 20 20 20 Burnerpressure mbar 12 5 12 5 10 5 Gasconsumption m3 h 0 9 1 1 1 7 Diametermainorifice mm 2 35 2 60 3 50 Diameterpilotorifice mm 2x0 27 2x0 27 2x0 27 Heating time T 44 K min 45 49 40 DATABUTANEG30 28 30mbar Nominalload gross k W 10 1 12 2 17 6 Supplypressure mbar 30 30 30 Burner pressure mbar 30 30 30 Gasconsumption kg h 0 7 0 9 1 3 Diametermainorifice mm 1 40 1 50 1 95 Diamet...

Page 11: ...uthority and fire regulations and the following British standards 5440 5546 6644 6700 6798 and 6891 Some chemicals produce vapours which can cause rapid failure of thermocouples burners and storage tanks if they are drawn into the combustion air supply Therefore if this water heater will be used to supply hot water to hairdressers dry cleaners industrial degreasing processesor any other area where...

Page 12: ...rally as shown on the following diagram See figure 4 STATE WATER HEATERS are tested to a maximum pressure of 12 bar and a maximum working pressure of 8 bar 2 1 3 Gasconnection The gas supply to this appliance must be installed in accordance with BS 6891 1988 Fit the gas supply cock supplied with this unit immediately before the gas control block No heat or soldered joints should be applied in the ...

Page 13: ...nalling returning flue gases The probe of the down draught supervision must remain installed on the draught hood Connect the slide connectors of the down draught supervision to the thermocouple see Figure 5 and install the head of the down draught supervision in the bracket see Figure 5 The draught hood must be positioned in its normal place with the temperature probe at the front of the boiler Pa...

Page 14: ...d press the piezo ignitor several times until the pilot burns see figure 6 5 Keep the control button pushed in for approximately 20 seconds After releasing the button the pilot should remain burning If the pilot extinguishes you should wait 5 minutes before repeating the ignition procedure The size of the pilot flame can be adjusted see also Pilot adjustment 6 Subsequently remount the outer and in...

Page 15: ...he burner venturi 3 Turn both clamps outward 3 pushing them over the edge of the burner chamber 2 3 Pilot adjustment The pilot can be adjusted by means of the regulating screw under the plastic cover on the right hand side of the gas control block Turn the screw clockwise to reduce the gas pressure and anti clockwise to increase the pressure Care should be taken to ensure the pilot covers the ther...

Page 16: ...er used The gas control block automatically regulates the gas supply The main burner will ignite as soon as a reduction in water temperature is sensed by the thermostat The main burner will shut down as soon as the preset temperature is achieved Position 1 approximately 30 C Position 2 approximately 40 C Position 3 approximately 50 C Position 4 approximately 60 C Position 5 approximately 70 C At h...

Page 17: ...ation and ignite the burner 3 Check the burner pressure and if necessary reset by means of the adjusting screw pr adj pressure adjustment see Figure 9 To make this possible the temperature control knob should be removed by pulling it straight forward making the pr adj visible Turning clockwise reduces the pressure turning anti clockwise increases the pressure It is recommended to check the heat in...

Page 18: ...ut the pressure regulation of the gas control block out of operation To do this the temperature regulating knob should be pulled straight forward Turn the no pr no pressure regulation screw down tight see figure10 Seal this setting with lacquer Remount the burner in reverse order Open the main gas tap 4b Conversion from LP gas to natural gas Put the pressure regulator into operation To do this the...

Page 19: ...sary to replace the anode it should always be replaced by one of the same type Figure 10 Conversion to another gas The type of anode required can be determined on the basis of the type of the appliance and the serial number 2 8 2 Cleaning 1 Close the gas supply and demount the burner after it has cooled down 2 Disconnect the burner pilot pipe and thermo couple from the gas control block see drawin...

Page 20: ...s important to note the type of appliance as well as the serial number of the appliance Based on this information the data concerning the spare parts can be determined 2 9 Inlet combination Not applicable in U K and Ireland 2 10 Fault finding In case of failure the following should be checked 2 10 1 Safety thermostat All appliances have been fitted with a safety thermostat that shuts off the gas s...

Page 21: ...leakage 1 Check whether the drain tap is fully closed 2 Check whether all water connections are water tight 3 Check whether the possible water leakage could be caused by condensation 2 11 Gas smell Warning Immediately shut the main gas tap Do not light any fire or switch on any lights do not use any electrical switches or alarm bells Open windows Thoroughly inspect all gas connections and if the g...

Page 22: ...on 2 approximately 40 C Position 3 approximately 50 C Position 4 approximately 60 C Position 5 approximately 70 C Higher water temperatures will cause more scale build up in the appliance It is for this reason that it is recommended to place the temperature control knob in position 4 as the accumulation of scale will be reduced at lower temperatures In addition a safety thermostat has been fitted ...

Page 23: ...ontact your installer or the local gas company Clean the pilot burner Find the cause and remove it Set the temperature regulator at a lower temperature Replace the thermocouple Restore the connection Open the gas tap Connect by sliding the two connectors of the down draught supervision on to the thermocouple Set the temperature regulator at a higher temperature Turn the temperature regulator compl...

Page 24: ...our installer See Condensation Tighten the threaded connections Trace the cause Reduce your hot water use Allow the appliance enough time to warm up water Safety thermostat has closed the gas supply because the water temperature was too high Hot water storage empty Cause cannot be determined Condensation of flue gasses Insufficient sealing of the water connections thread Leakage from other water a...

Page 25: ...d or energy inputs which do not exceed those stated on the rating plate of the water heater d in a non corrosive atmosphere or area e with an approved temperature and pressure relief valve of adequate capacity not exceeding the working pressure rating shown on the water heater and installed in conformity withSTATEWATERHEATERS installation instructions f when anode s have been inspected and renewed...

Page 26: ...able for purpose except within the terms of warranty detailed above STATE WATER HEATERS will not be liable by virtue of this guarantee or otherwise for damage to any persons or property when arising out of contracts or tort The terms of this guarantee do not effect your statutory rights under United Kingdom Consumer Legislation This warranty applies to the following models PRV 30 NORS G PRV 40 NOR...

Page 27: ...MODEL SERIALNUMBER ORIGINALDATEOFINSTALLATION NAMEOWNER ADDRESS TOWN STAMP INSTALLER Important This form should be filled in completely within two weeks of installation 27 ...

Page 28: ...0307 993 R0 28 ...

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