Technical information

ø in mm.

MODELS

GAS TYPE BURNER PILOT

D61B-D61E PROP/BUTANE 0,72 (6 off) 0,19

D61B Natural 1,35 (6 off) 0,32

G11E PROP/BUTANE 0,72 (12 off) 0,19

G11E Natural 1,18 (12 off) 0,32

A.2.3. - LOOKING AFTER THE APPLIANCE

• PRECAUTIONS

- Against furring up (lime scale)

If the appliance is installed in an area with very hard water, with time, the following

may occur:

- A fall in the hot water temperature, or

- A reduction in the hot water flow.

This means that the heat exchanger may be furred up, creating the above situations.

As the level of scale build up is proportional to the selected outlet temperature, (the

hotter the water the greater the scale build up) In order to reduce scale build up it

is recommended that the water temperature required at the outlet is achieved by

selecting the desired temperature at the heater, and not by mixing the hot and cold

water at the outlet to obtain the correct temperature i.e. for showering purposes.

Note: Defurring/descaling should be carried out using proprietary agent or dilute

hydrochloric acid. It is recommended to circulate the descaling fluid around the

heat exchanger in order to speed up the process. Depending on the amount of

scale build up and the strength of the descaling solution used, the time to totally

descale will vary.

• MAINTENANCE

• MINIMUM ANNUAL MAINTENANCE

Gas water heaters are rugged pieces of equipment which are designed to work for

a long time with minimum maintenance requirements. The only regular

maintenance required is the (annual) cleaning of the heating body and the burner.

If the appliance is installed in a caravan or boat it is essential this is done at the

beginning of each season.

• CLEANING THE MAIN BURNER

- To carry out the annual cleaning of the burner, proceed as follows:

- Turn off the gas supply, remove the cover and remove the burner.

- Clean the surface of the burner heads gently with a brush. Then blow through

them to remove any particles of dust loosened during the brushing operation.

- Check the venturis for contamination from insects and spiders webs.