Vaillant ecoMAX 646 Installation And Maintenance Manual Download Page 10

Installation and maintenance manual ecoMAX 646

10

3.4 

Required minimum gaps/assembly clearances

Both for the installation/assembly of the appliance and 
for carrying out maintenance tasks later, you need the 
minimum gaps and assembly clearances given below:

250

350

Fig. 3.3 Required minimum gaps/assembly clearances

Leaving gaps to the sides is not necessary.
Furthermore, it is not necessary to keep a gap between 
the appliance and components made of combustible 
constituents, since at the rated heating power of the ap-
pliance, the temperature here is never higher than the 
permitted temperature of 85 °C.

3.5 

Mounting the appliance

•  Hang the appliance up into the appliance holder (1) 

from above with the bracket (3).

•  Mount the cable connections to the appliance, making 

sure they are disconnected from the power supply.

85

50

240

75

75

23

50

3

1

2

Fig. 3.4 Mounting the appliance

3.6 

Removing/Attaching the appliance casing

Removing the casing
To dismount the front casing of the appliance, proceed 
as follows:
•  Unscrew the screw (1) on the bottom of the appliance.
•  Press in both holding clips (2) on the bottom of the ap-

pliance so that the casing comes loose.

•  Pull the casing (3) forwards by its bottom edge and lift 

the casing up and off (4).

1

2

4

3

Fig. 3.5 Removing/Attaching the appliance casing

Attaching the casing

To mount the casing, proceed as follows:
•  Place the casing on the upper appliance holders.
•  Push the casing onto the appliance so that the holding 

clips (2) on the casing click into place.

•  Fix the casing by screwing in the screw (1) on the bot-

tom of the appliance.

3 Mounting

Summary of Contents for ecoMAX 646

Page 1: ...Installation and maintenance manual ecoMAX ecoMAX 646 For the installer Wall hung room sealed fan assisted condensing boiler GB...

Page 2: ...Water circulation system 18 5 1 1 Treating the heating water 18 5 1 2 Heating side filling and bleeding 18 5 1 3 Hot water side filling and bleeding 19 5 1 4 Filling the siphon 19 5 2 Checking the gas...

Page 3: ...list No 00 20 02 01 60 Sticker with name of appliance No 83 42 24 Installation template No 12 41 82 Safety sticker No 83 55 93 Service aids The following test and measuring equipment is required for i...

Page 4: ...cription of the appliance 1 1 Design 1 2 3 4 7 8 9 10 11 5 6 Fig 1 1 Function elements 1 Connection for the flue pipe 2 Heat exchanger 3 Pressure switch 4 Pump 5 Electronics box 6 KFE cock 7 Air separ...

Page 5: ...bility Coun cil Directive 89 336 EEC The appliances meet the basic requirements of the efficiency requirements directive Council Directive 92 42 EEC The appliances meet the basic requirements of the e...

Page 6: ...nly propane in accordance with DIN 51622 may be used Important When tightening or slackening screwed connec tions always use suitable open ended spanners not pipe wrenches or extensions etc Incorrect...

Page 7: ...ation of a boiler in a room containing a bath or shower Note Where a room sealed boiler is installed in a room containing a bath or shower any electrical switch or boiler control utilising mains elect...

Page 8: ...the appliance Caution Do not install the appliance in rooms prone to frost In rooms with aggressive steam or dust the appliance must be operated independently of the ventilation When choosing the plac...

Page 9: ...1 180 4 94 1 A 80 125 6 Fig 3 2 Connection dimensions 1 Flue connection 80 125 mm Dimension A with 87 elbow 253 mm Dimension A with 87 T piece 270 mm 2 Appliance holder 3 Heating return 4 Charging ci...

Page 10: ...above with the bracket 3 Mount the cable connections to the appliance making sure they are disconnected from the power supply 85 50 240 75 75 23 50 3 1 2 Fig 3 4 Mounting the appliance 3 6 Removing A...

Page 11: ...rams are schematic diagrams They do not replace the full profes sional diagrams The system diagrams do not contain the shut off devices and safety devices necessary for correct mounting Observe the ap...

Page 12: ...0 K 15 K 20 K ecoMAX 646 WH 95 WH 40 WH 40 double cascade WH 160 WH 95 WH 95 triple cascade WH 280 WH 160 WH 160 quadruple cascade WH 280 WH 160 WH 160 Table 4 2 Selection of the hydraulic switch WH m...

Page 13: ...4 5 Heating side connection Caution Ensure the connecting cables are disconnected from the power supply when mounting them so that no leaks are caused in the heating system The appliance is connected...

Page 14: ...ch off the power sup ply to the boiler first Only once this is done may you carry out the installation There is continuous operating voltage at the power supply terminals L and N even when the main sw...

Page 15: ...uous pump for VRC MF TEC or the multicircuit controller increase the pump run out time to 15 20 minutes diagnosis point d 1 see chapter 6 2 4 8 3 Connecting accessories and external system components...

Page 16: ...g 20 V remove bridge on connection Room thermostat 24 V connections 7 8 and 9 Caution Do not connect supply voltage Risk of electronics being destroyed Mains supply 230 V 50 Hz Room thermostat 230 V 5...

Page 17: ...red X 2 10 white X 2 15 blue X 2 8 black X 2 20 black X 4 X 10 X 7 X 6 X 2 X 2 9 red 22 VDC X 2 24 blue earth X 2 12 blue earth X 2 7 grey PWM X 2 3 black hall signal X 2 17 red 22 VDC X 2 23 black ea...

Page 18: ...6015000 5 1 1 Treating the heating water Caution Do not enrich the heating water with frost or corrosion protection fluid If you enrich the heating water with frost or corrosion protection fluid chang...

Page 19: ...the gas setting 5 2 1 Factory gas setting Caution Before starting up the appliance compare the data on the set gas type on the data badge with the gas on site Checking the amount of gas is not necessa...

Page 20: ...t correct the error notify the gas supplier Proceed as follows Put the appliance out of operation Close the appliance s gas stop cock Remove the pressure gauge and screw the seal plug 1 fig 5 3 back...

Page 21: ...h m3 Table 5 2 Factory gas setting 5 3 Functional test After installing the appliance and setting the gas per form a functional test before commissioning the appli ance and handing it over to the user...

Page 22: ...tem Instruct the user about the methods used for combus tion air supply and flue conducting Be especially sure to point out that these must not be altered Instruct the user on how to check the require...

Page 23: ...the display Then the set par tial load is displayed in kW By pressing the or keys you can now increase or decrease the value in 1 kW increments The displayed value flashes during the setting proce dur...

Page 24: ...activated for a certain time after every time it has been switched off The burner lockout time can be adjusted to fit the characteristics of the heating system The burner lockout time is only activat...

Page 25: ...t be required are listed in the relevant current spare parts catalogues Information can be obtained from Vaillant Customer Service Centres Note If inspection and maintenance work is neces sary with th...

Page 26: ...burner may not be opened It can only be guar anteed that this component is gas tight after it has been inspected at the factory Cut off the gas supply to the appliance Lower the switch cabinet Undo t...

Page 27: ...burner is maintenance free and needs no cleaning The surface should be checked for damage and the burner replaced if necessary After checking replacing the burner install the com pact thermo module as...

Page 28: ...hose to a suitable discharge point Make sure that the boiler s maintenance cocks are open Open the draining cock Open the air release valves on the radiators Start with the radiator that is highest u...

Page 29: ...ing S 0 No heat required S 1 Heating pump supply S 2 Heating fan start S 3 Heating ignition S 4 Heating burner on S 5 S 6 Heating fan run out S 7 Heating pump run out S 8 Remaining lockout time heatin...

Page 30: ...ontrol d 22 Hot water request 1 on 0 off d 23 Operating mode summer winter mode 1 on 0 off d 24 Air pressure sensor actual value actual value in Pa d 25 Hot water enabling via warm restart clock 1 yes...

Page 31: ...program F 24 Water shortage Temperature rise too quick System not bled correcly pump jammed reduced output of the pump air in the appliance system pressure too low supply and return NTC mixed up start...

Page 32: ...Test programs 9 Vaillant Service To ensure regular servicing it is strongly recommended that arrangements are made for a Maintenance Agree ment Please contact Vaillant Service Solutions 0870 6060 777...

Page 33: ...pressure natural gas p 20 mbar connection pressure gas flow pressure propane p 50 mbar flue gas mass flow min max 5 7 20 5 g s flue gas temperature min max 40 70 C rated water volume when T 20 K 1935...

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Page 36: ...0020020158_00GB 03 2006 Subject to alteration...

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