Related Manuals for Junkers miniMAXX WRD 11-2.B Series
Summary of Contents for Junkers miniMAXX WRD 11-2.B Series
- Page 1 Installation Manual and Operating Instructions Gas Heaters miniMAXX WRD 11 -2 .B.. WRD 14 -2 .B.. WRD 18 -2 .B..
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Page 2: Table Of Contents
Table of contents Table of contents Safety information Explanation of symbology Information about the heater Category, type and approval no. Technical identification code Supplied materials Description of the heater Special accessories Dimensions Functional diagram of the heater Electrical diagram Function 1.10 Technical characteristics Regulations Installation... -
Page 3: Safety Information
Safety information Safety information Explanation of symbology The safety instructions which appear in If you smell gas: the text have a grey background and are B Close the gas valve. identified in the margin by a triangle sur- B Open the windows. rounding an exclamation mark. -
Page 4: Information About The Heater
Information about the heater Information about the heater Category, type and approval no. • Great savings in comparison with conventional hea- ters, due to the possibility of power adjustment and no permanent pilot flame 0464 • Natural gas/LPG burner • Semi-permanent pilot burner which only functions Model WRD 11/14/18 -2 B... -
Page 5: Dimensions
Information about the heater Dimensions Fig. 1 Heat exchanger Switch / LED - Battery status check Burner Front Temperature/volume selector Opening for mounting on the wall Gas connection Connection collar to the combustion gases pipe Ignition unit Flue with non-return device Battery compartment Gas automatic Power selector... -
Page 6: Functional Diagram Of The Heater
Information about the heater Functional diagram of the heater Fig. 2 Functional diagram Pilot burner Maximum gas adjusting screw Spark plug Gas supply pipe Ionisation probe Gas filter Heat exchanger Hot water pipe Main burner Ignition unit Injector Battery compartment Screw for measurement of pressure in burner Servo valve Screw for measurement of input pressure... -
Page 7: Electrical Diagram
Information about the heater Electrical diagram Fig. 3 Electrical diagram Spark plug Temperature limiter Ionisation probe Monitoring of combustion gases Micro-switch Diaphragm valve Ignition unit LED - Burner status check Battery compartment Switch / LED - Battery status check Servo valve (normally open) Temperature sensor Pilot valve (normally closed) Digital display... -
Page 8: 1.10 Technical Characteristics
Information about the heater 1.10 Technical characteristics Technical characteristics Symbol Units WRD11 WRD14 WRD18 Power and flow Nominal useful power 19,2 23,6 30,5 Minimum useful power Pmin Useful power (adjustment range) 7 - 19,2 7 - 23,6 7 - 30,5 Nominal thermal flow 21,8 34,5... -
Page 9: Regulations
Regulations Regulations and various domestic detergents. If necessary, take adequate measures. Any local by-laws and regulations pertaining to • Respect minimum installation clearances installation and use of gas-heated appliances must be indicated in Fig. 4. observed. Please refer to the laws that should be •... -
Page 10: Heater Mounting
Installation If these conditions cannot be met, a different location B Connect the water pipes to the water automatic must be selected for the gas intake and evacuation. using the provided connection accessories. Surface temperature The maximum surface temperature of the heater is less than 85 °C, with the exception of the combustion gases evacuation device. -
Page 11: Use
Open all water and gas blocking devices. Purge the pipes. Caution: The front panel in the burner and pilot burner area may reach high temperatures, with risk of burning in case of contact. Digital display - description Fig. 8 Replacing the batteries Precautions when using the batteries •... -
Page 12: Power Adjustment
Temperature/flow adjustment B Turn anti-clockwise Increases flow and decreases water temperature. Fig. 10 Turning off Fig. 13 B Press the switch , position B Turn clockwise. Decreases flow and increases water temperature. Power adjustment Regulating the temperature to the minimum required Lower water temperature. -
Page 13: Adjustments
Adjustments Adjustments Heater adjustment B Turn on the heater with the power selector set to the left (maximum position). * Sealed elements must not be opened. Natural gas Heaters for natural gas (G 20) are supplied sealed from the factory after being adjusted to the values indicated on the rating plate. -
Page 14: Maintenance
Maintenance Maintenance Maintenance must only be performed by a Warning: Without a water filter in- qualified technician. After one or two stalled, turning on the heater is prohibit- years of use a general overhaul must be performed. Startup after maintenance work Warning: Before performing any main- B Tighten all connections once more. - Page 15 Maintenance Danger: The user must never touch the device. Maintenance* If the probe malfunctions, proceed in the following man- ner: B Unscrew the probe fixing screw. B Detach the ignition unit terminal. B Replace the damaged part and proceed with its assembly using the steps indicated in the previous table, in reverse order.
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Page 16: Problems
Problems Problems Problem/cause/solution Assembly, maintenance and repairs must be performed by qualified technicians only. The following chart offers solu- tions to possible problems (solutions followed by an * must be undertaken by qualified technicians only). Problem Cause Solution The heater does not ignite and dig- Batteries flat or not inserted correctly, Check battery position and/or replace them, ital display is turned off.
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