Hot–water supply (ecoMAX 800). Vaillant ecoMAX

834177_13GB_042005.qxd 09.03.2005 17:57 Uhr Seite 40

6 Functional checks (commissioning part II)

6.1.2 Hot–water supply (ecoMAX 800)

• Switch the unit on.

• Fully open one of the hot water taps in the system.

• Press the ”i” button

Status code ”S.14” appears on the display to indicate that the hot–water supply is functioning correctly.

• Refit the boiler casing.

• Attach the bottom cover to the boiler by sliding the front edge of the cover into the lip at the bottom front edge of the appliance chassis.

• Carefully push the rear of the bottom cover upwards until the spring retaining clips engage at the side of the appliance. It may be necessary to apapt the bottom cover by removing the easy break sections.

Fig. 6.2 Hot–water supply display messages (ecoMAX 800)

6.1.3 Heating system

• Switch the unit on.

• Ensure that there is a heating demand.

• Press the ”i” button.

Status code ”S.4” appears on the display to indicate that the heating system is functioning correctly.

Fig. 6.3 Heating mode display messages

6.1.5 Handing over to the user

• Set the maximum radiator temperature control to the desired setting.

• Set the maximum hot water temperature control to the desired setting.

• Instruct the user in the safe and efficient operation of the boiler, in particular the function of

–the boiler on/off control

–the maximum radiator temperature control

–the maximum hot water temperature control

(ecoMAX 800)

–the pressure gauge

• Show the user how to operate any external controls.

• Explain to the user the importance of having the boiler regularly serviced by a competent servicing company.

To ensure regular servicing, it is strongly recommended that arrangements are made for a Maintenance

Agreement. Please contact Vaillant Service Solutions

(0870 6060 777) for further details.

• Record central heating operating pressure in the

Benchmark gas boiler commissioning checklist along with the heat input (kW) and temperature difference between flow and return.

Failure to install and commission this appliance to the manufacturers instructions may invaludate the warranty (Note: This does not affect your statutory rights).

• Leave the users instructions and installation instructions with the user.

6.1.4 Final system flush (”Hot”)

• Turn on the boiler for central heating and allow the boiler and system to reach temperature.

• Check that the heating system is watertight.

• Turn the boiler off and rapidly drain both boiler and system while still hot

• Refill the system and release all air.

• Release water from the system until the system design pressure of 1.0 bar is attained. (The actual reading on the pressure gauge should ideally be 0.5 bar plus an additional pressure corresponding to the highest point of the system above the base of the boiler – 10 m head equals an additional 1 bar reading on the pressure gauge. The minimum pressure should not be less than

1 bar in any installation.) If the system is to be treated with an inhibitor it should be applied at this stage in accordance with the manufacturer’s instructions.

Further information can be obtained from Sentinel,

Betz Dearborn Ltd., Tel: 0151 4951861, or Fernox,

Alpha–Fry technologies. Tel: 0870 6015000.

• Disconnect the temporary filling connection.

Attention!

The device may only be used

• for initial operation

• for testing

• for continuous operation with the chamber cover closed and with the flue system fully mounted and sealed.

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Note

When you have finished the installation, attach the sticker supplied (835593) to the appliance in the user’s language.

Danger:

Note that if the boiler is run with an empty condensate trap there is a danger that fumes might escape. Into the room and cause poisoning. For this reason, it is important to ensure that the trap is topped up each time the unit is cleaned.

Instructions for installation and servicing ecoMAX

834177_13GB_042005.qxd 09.03.2005 17:57 Uhr Seite 41

Servicing 7

7. Servicing

7.1 Inspection and servicing

To ensure the continued safe and efficient operation of the boiler it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage, but in general the boiler should be inspected once per year and serviced every second year.

We therefore recommend that a service contract be taken out for the boiler. It is law that all servicing work is carried out by a competent person (CORGI registered).

be connected to this point to establish the combustion performance of the boiler.

It is not necessary to check the CO

2 content or adjust the air ratio of the boiler during inspection or annual service.

This value requires checking and adjusting only in the following instances: replacement of gas valve, conversion to or from Natural Gas/ LPG or if incorrect combustion is suspected.

Important

Before starting any maintenance work:

For safety reasons only genuine Vaillant spare parts should be used when servicing the boiler.

Important

Failure to carry out work in accordance with these instructions could result in personal injury or damage to the property

7.2 Initial inspection

Every year the boiler should be inspected to check its general condition. This inspection should include the boiler, flue, pipework and electrical connections for any indications of damage or deterioration. A gas rate check of the boiler and a visual inspection of the combustion should also be carried out.

• Isolate the mains electricity supply by disconnecting the plug at the socket outlet (if there is only an isolating switch remove the fuse from the switch).

• Turn OFF the gas supply at the gas service valve fitted to the boiler.

• When removing any water carrying components ensure that water is kept away from all electrical components.

• Always use new seals and O–rings when replacing parts.

• Always test for gas soundness and always carry out functional checks after any service work and after exchanging any gas carrying component.

• Always check earth continuity, polarity and resistance to earth with a multimeter after any service work and after exchanging any electrical component.

Every second year the compact thermal module should be removed and the burner and heat exchanger cleaned.

All inspection and servicing work should be performed in the order as per Table 7.1

Before commencing any servicing or maintenance work, carry out an initial inspection of the system as follows:

• Inspect the flue, pipework and electrical connections for indications of damage or deterioration.

• Inspect the air supply and ventilation arrangements of the installation.

• Check the heating and water system, in particular the condition of radiator valves, evidence of leakage from the heating system and dripping hot water taps.

No Description

1 Carry out functional check of boiler

2 Remove the compact thermal module

3 Clean primary heat exchanger

4 Clean burner

5 Refit compact thermal module, replace burner seals

(Spare part number 98 1046)

6 Check general condition of boiler and clean as necessary X

7 Check electrical plugs and connections X

8 Check/re-pressurise expansion vessel as necessary

9 Check and clean condensate trap and connection pipes X

10 Check ignition and burner flame picture X

11 Check boiler for any leaks

12 Check air/gas flue system

X

X

13 Complete benchmark logbook

Table 7.1

X

Inspection Service

X X

X

X

X

X

X

X

X

X

X

X

X

X

7.2.1 Removing the compact thermal module

Turn off the boiler

• Isolate the electrical supply to the boiler.

• Remove boiler bottom cover by releasing the two spring retaining lugs and lowering the rear of the bottom cover.

• Gently pull the bottom cover backwards to remove from the appliance. Turn off the gas service valve.

• Turn off the boiler CH service valves.

• Loosen case retaining screw and release the front case spring retaining clips located beneath the front edge of the appliance.

• Remove the front casing by easing forward the bottom edge and gently lifting.

• Lower electronic control box.

Note:

The boiler is fitted with a combustion analysis test point. A suitable combustion analyser can

Instructions for installation and servicing ecoMAX