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warmhaus.com

We congratulate you for preferring the Warmhaus combi to maintain your 

heating and hot use water comfort for long years and thank for your trust. 

Warmhaus combi, manufactured in accordance with European Union 

standards and advanced technology, are also being imported to many 

countries. You can benefit from our Authorized Technical Service network 

having occupational competency certificate for all kinds of ordinary 

maintenance requirements for this product manufactured with rigorous 

studies. Our Authorized Services guarantee protection of your device 

performance as they always provide original spare parts service. Carefully 

read this guide in order to use the combi in an economic, comfortable and 

efficient way and keep as a source of application.

In order to ensure efficient use, we initially recommend you to have the 

installation performed by a certified dealer experienced and competent in 

installation by the local gas authority.

1.1.  GENERAL WARNINGS

Guide Book is an inseparable and integral part of the product and should be 

delivered to the new user when the device is transferred. The aforementioned 

book should be carefully protected and used as well as be applicable when 

required as it contains important information regarding installation. 

Radiator and DHW installations should be engineered and 

produced by a competent and certified engineering company in 

accordance with measurements defined based on laws by 
considering legal regulations in force. 

Installation and Maintenance operations should be performed by 
the expert personnel having adequate technical knowledge in 
installations sector and occupational competency certificate in 
accordance with legal regulations in force. As the result of a false 

installation, dangers may occur which the manufacturer company cannot be 
held responsible for and may damage people, other live beings (animals, 
plants) or commodities. 

Natural Gas Installation Project; One of the dealers authorized by a 
gas company located at your city should be preferred for performing 
project and etude studies.

In order to enable use of the combi with LPG tubes or LPG tanks, 
conversation of the combi should be performed by our authorized 
Warmhaus service. Project design and application for LPG use 
should be performed by the company supplying the tank in 

accordance with local and legal rules. 

1.2.  GENERAL WARRANTY CONDITIONS

The Manufacturer company shall not have any responsibilities 

within or out of the agreement scope due to failures arising from 

failing to follow legal regulations in force and standards and 

information given in this guide book (and information and instructions 

provided by the manufacturer under any circumstances) during 

installation, use or maintenance operations and device warranty shall also 

be void. 

Only the authorized Warmhaus Service is authorized to make the 
electrical connection of Combi and supplying electricity to the 
combi. 

The maintenance and repairs as the result of failure of the product within the 
warranty period due to material, production and installation errors shall be 
performed as free of charge without claiming any workmanship costs and 
spare part payments.

(Also See: 3.5. ISSUES REQUIRED TO BE TAKEN INTO CONSIDERATION BY 
USERS FOR WARRANTY CONDITIONS)

This device should only be used for its designed intended 
purposes (to be used in closed-circuit heater installation and 
production of open circuit domestic hot water production). All 

kinds of other uses are not suitable as well as may create a potential danger. 

Manufacturer shall not be responsible for damages occurring due to 
interventions, false installation and initial starting performed by unauthorized 
persons and warranty scope shall be void. As the Combi is a device having 
heating system, domestic hot water, natural gas/LPG and electrical 
connections, do not make and have any interventions made without the 
authorized service.

Forbid any interference with a sealed component.

Device maintenance operations should be performed by the 
authorized and expert technical personnel, and

It is strictly forbidden to try to detect the gas leakage with the help 
of flame.

This device has been manufactured to be installed in the country 
given on the technical registry label. Performing the installation in 
countries other than the country written on the table may damage 

individuals, animals and commodities. 

Combis bear CE mark in accordance with below given directives:
- Gas Appliances Directive 2009/142/EC
- Boiler Efficiency Directive 92/42/EEC
- Low Voltage Directive 2014/35/EU
- Electromagnetic Compatibility Directive 2014/30/EU

Please visit the below given web site of Warmhaus for acquiring more 
detailed information regarding legal regulations on installation of gas fired 
heating devices: www.warmhaus.com 

Manufacturer:

 WARMHAUS Isıtma ve Soğutma Sistemleri Tic. A.Ş. Bursa 

Organize Sanayi Bölgesi Park Cad. No:10 16140 Nilüfer-Bursa / Türkiye

WARMHAUS

Warmhaus Authorized Technical Service Centres maintain an assurance 
regarding quality and professionalism on that issue. WARMHAUS is not 
responsible for damages arising from repairs, part replacements and 
maintenances performed by third persons and companies and combi 
remains out of the warranty scope under such conditions.

WARMHAUS A.Ş. reserves the right to make all kinds of technical and 
commercial amendments without giving information and rejects all 
responsibilities depending on misspelling.

1.  DEAR WARMHAUS CUSTOMER 

1015 18

24 kW, 28 & 33 kW

Summary of Contents for EWA 24

Page 1: ...CONDENSING COMBI BOILERS INSTALLATION USER MANUAL EWA24 EWA28 EWA33...

Page 2: ...EWA 24 EWA 28 EWA 33...

Page 3: ...mptying Radiator Installation 13 2 3 3 Circulation Pump 15 2 3 4 Controls for Initial Operation of Combi 15 2 3 5 Parts Comprising the Combi 16 2 4 COMBI FLUE CONNECTIONS 16 2 4 1 Exhaust Gas Flue Pip...

Page 4: ...and instructions provided by the manufacturer under any circumstances during installation use or maintenance operations and device warranty shall also be void Only the authorized Warmhaus Service is...

Page 5: ...YES II 2E 3P Natural Gas 20 mbar 25 mbar G20 Available Available Not Available BE FR YES II 2H3B P Natural Gas 20 mbar G20 Available Available Not Available AT CH CY CZ DK EE FI GR IT LT NO RO SE SI...

Page 6: ...es operating with natural gas and your gas meter Immediately evacuate the place with gas odour Natural Gas Emergency Line from your neighbour or another suitable place Do not make any intervention on...

Page 7: ...Figure 2 User s Guide Figure 5 Exhaust gas flue set 471 1000 GAS G3 4 G3 4 G3 4 80 mm 65 mm 65 mm 64 mm 725 mm 592 mm 422 mm G1 2 G1 2 75 mm 73 mm 110 m m 114 mm OPTIONAL Ewa Priwa ERP Priwa ERP Plus...

Page 8: ...r semi full brick wall according to installation scheme and with connection screws and not to be used for other purposes In case of using different materials for installation combi shall be out of the...

Page 9: ...2 2 7 In Case of Using LPG Tank LPG use is recommended for heat requirements over 24 kW New LPG stock tanks may contain settled gas residues nitrogen however that pauperises the mixture assigned to t...

Page 10: ...ceptable to use gas and water connection pipes for earthing WARMHAUS A cannot be held as responsible for any damages and losses on individuals or commodities arising from failing to provide earth conn...

Page 11: ...ensor is activated when connected as independent from the used room thermostat typology and functions as common with room thermostats The relation between installation input temperature and exterior w...

Page 12: ...0 600021 WT RF03 Large Screen Modulated Weekly Program Scheduled Wireless room thermostat Product code 153 11 660 600022 150 cm Min 30 cm Room thermostat shall be mounted 1 25 to 1 5 m above the groun...

Page 13: ...d in the hot tap water Hydrophore should be used if required Prior to filling the radiator installation it must be flushed and all wastes must be cleaned Warning In order to prevent invalidity of devi...

Page 14: ...mum 3 storey buildings Drainage and Ventilation Pipe Min 19 mm Water Air proof insulation Figure 2 26 Connection of condensate Drainage Pipe to External Soil Vent Stack Connection of Condensate Draina...

Page 15: ...ppointment request Gas opening approval certificate should be taken from the local gas company for your gas line Combi electricity connection should be made via 2 or 3 Amps fuse Figure 22 Ewa 28 Ewa 3...

Page 16: ...on of hermetic combi should be original Warmhaus flue sets and they should be used by considering measurements and restrictions given in installation instructions In case of using exhaust gas pipe and...

Page 17: ...ontent 10 00 tolerance 0 5 0 5 maximum allowable draught and maximum allowable pressure difference between combustion air inlet and flue gas outlet including wind pressures 120 Pa characteristics and...

Page 18: ...t are given technical table c combustion product mass flow rate at minimum heat input allowed by the controls are given technical table d G20 CO2 or O2 content of the combustion products at nominal op...

Page 19: ...H C R A I J K I L S B T U Likely flue positions requiring a flue terminal guard Figure 32 Environmental locations of flue Terminal Position with Minimum Distance mm A1 Directly below an opening air br...

Page 20: ...5 mm when compared with the external pipe For security purposes combi suction discharge flue should not blocked even temporarily 1 90 bend 2 Sealing gasket 3 Sealing gasket 4 Centering wire 5 Exterio...

Page 21: ...sed for 80 intake and exhaust pipes is 30 metres regardless from whether they are used for intake or exhaust Figure 41 Vertical flue set installation application Figure 42 Hermetic flue type installat...

Page 22: ...rill fitted The air pipe can be situated at the side or beneath the flue pipe to a minimum dimension of 140 mm see Table 1 It must not be sited above the flue pipe The flue and air pipes must extend b...

Page 23: ...apter L 1533 153 11 660 600013 60 100 Condensed Flue Extension L 500 mm 153 11 660 600014 60 100 Condensed Flue Extension L 1000 mm 153 11 660 600015 60 100 Condensed Flue Extension L 2000 mm 153 11 6...

Page 24: ...m 153 11 660 600092 80 Condensed Twin Flue Extension Pipe L 1000 mm 153 11 660 600093 80 Condensed Twin Flue Extension Pipe L 2000 mm 153 11 660 600094 80 Twin Flue Bend 90 153 11 660 600095 80 Twin F...

Page 25: ...minals For GB recommendations are given in BS 5440 Pt 1 For IE recommendations are given in the current edition of I S 813 Domestic Gas Installations 2 If the terminal discharges onto a pathway or pas...

Page 26: ...ut is not blocked If a room thermostat or control device is connected ensure that it is at ON position If you will shut off the combi for a long period perform below written operations Discharge the r...

Page 27: ...he combi and eliminating the failure in case of combi failure MODE Winter Summer OFF mode is used for position adjustment Operating positions and related notifications POSITION EXPLANATIONS CLOSED or...

Page 28: ...re adjustment buttons see Figure 39 between 25 80 C screen lights when buttons are pressed and C symbol flashes besides the radiator temperature value If you have a ground heating system as our Author...

Page 29: ...ght turns off Analogue manometer is located near to right bottom side of the combi Installation pressure should be seen in this manometer even in the absence of electricity If you have a ground heatin...

Page 30: ...ment of installation place Thus the combi automatically operates with variable gas flow rates depending on heat load of installation between the minimum and maximum power P21 Lowe temperature region s...

Page 31: ...4 RESET boiler and check if problem removed 5 Call for authorised service at first E 07 Safety thermostat intervention Boiler does not work E07 error code flashing on the screen Lack of water on the...

Page 32: ...removed 5 Call for authorised service at first E 28 Maximum allowed consecutive lock out reset reached Usable RESET number reached Too many consecutive lock out failures followed by reset due to other...

Page 33: ...ssure Aging or rust on the electrode Recirculation on fluegas path Blokage on flue or wrong flue Electrode position Cabeling disconnections Combustion calibration Electronic board Gas valve failiure 1...

Page 34: ...lve failiure Electronic board 1 Call for authorised service at first 2 Check wrong flue OR flue gas blockage 3 Check recirculation flue gas leak from flue gas path to fresh air side check flue gas sea...

Page 35: ...least execute maintenance operations on a yearly basis in compliance with what is stated in the relative point at annual check and maintenance of the appliance in compliance with national regional or...

Page 36: ...400 2400 2400 Pump Energy Efficiency Index EEI 0 20 0 20 0 20 Domestic Hot Water Circuit Maximum DHW Heat Input kW 25 8 29 7 34 2 Minimum DHW Heat Input kW 3 5 3 75 4 35 Max Domestic Hot Water flow ra...

Page 37: ...on was determined by applying the spesifications of the relevant European directives Differences to product information listed elsewhere may result in different test conditions Only the data that is c...

Page 38: ...ual electricity consumption AEC kWh 26 37 34 39 42 Water Heating Energy Efficiency hwh 81 84 83 84 82 Daily fuel consumption Qfuel kWh 14 809 23 152 23 615 23 078 29 317 Annual fuel consumption AFC GJ...

Page 39: ...been carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information contained in this leaflet All goods are sold subject...

Page 40: ...Ewa Installation User Manual code 150 11 606 000075 Revision Date R00 05 2019 EWA24 EWA28 EWA33 CONDENSING COMBI BOILERS INSTALLATION USER MANUAL...

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