VOKERA Linea Especificações descarregar pdf (Página 5)

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2.1 BEFORE SWITCHING ON

Before switching the appliance on please famil-

iarise yourself with:

● How to isolate the appliance from the gas, wa-

ter, and electricity supplies.

● How to check and top-up – if necessary – the

system water pressure.

● The time clock or boiler control.

● Any external thermostats and their functions.

● The appliance controls.

2.2 APPLIANCE CONTROLS (see fig. 1)

The appliance controls are concealed behind the

front flap. To gain access to the controls simply

press the top centre of the flap, release, and pull

downwards.

The appliance has a mode selector switch, vari-

able thermostats for controlling the temperature

of the heating flow outlet and the hot water outlet,

system pressure gauge, and an aperture for an

integral clock. The mode selector switch has three

positions:

● Hot water only

● Off

● Heating & hot water

The variable hot water thermostat allows you to

set the temperature of the water to your hot wa-

ter taps between 37.5°C (min) and 65°C (max).

The appliance will have been commissioned by

your installer to deliver hot water at both a rea-

sonable temperature and flow rate.

Should you wish to increase the temperature of

the hot water and the hot water thermostat is al-

ready set at maximum, simply reduce the flow of

water as it comes out of the tap. Please consult

your installer for further advice if required.

The variable heating thermostat allows you to set

the temperature of the water to your radiators be-

tween 40°C (min) and 80°C (max).

The pressure gauge shows the current pressure

of the system, the gauge should be set between

1 and 1.5 BAR. When the appliance is operating

the gauge may rise or fall slightly, this is quite

normal. The minimum permissible level for the

safe and efficient operation of the appliance is

0.5 BAR. Should the pressure fall below 0.5 BAR,

the boiler shuts off automatically.

Depending on the type of controls specified by

your installer you may have an integral Vokera

time clock or the Vokera remote control fitted, if

so, supplementary instructions can be found at

the back of this booklet. If an external time clock

has been fitted, please refer to the instructions

supplied with such.

2.3 LIGHTING THE BOILER

Ensure the gas and electrical supplies to the boiler

are turned on.

Turn the mode switch to the ‘heating & hot water’

position. The status indicator should be ‘Green’ if

the status indicator is flashing ‘Red’ refer to 3.2.

Refer to the particular instructions for the type of

time clock or control fitted and ensure there is a

demand for heating. If there is a room thermostat

you should ensure that this is also calling for heat.

When there is a demand for heating via the above

controls the boiler will go through an ignition se-

quence, whereby the burner will light.

If the appliance fails to ignite during the ignition

sequence, allow a period of two minutes before

re-setting.

To adjust the output temperature of the appliance

turn the thermostat knob clockwise to increase

or anti-clockwise to decrease.

When the appliance reaches the set tempera-

ture, the burner will go off for minimum period of

approximately 3 minutes.

When the time clock or external thermostats heat-

ing request has been satisfied, the appliance will

switch off automatically.

When the mode selector switch is in the hot wa-

ter only or heating & hot water position, the boiler

will light to supply hot water whenever a hot wa-

ter outlet (tap) is opened.

Periodically the appliance will light on minimum

output as a function of the pre-heat facility.

Fig. 3

Normal

Operating

Position

Filling

Position

Closed

Position

1.9 FILLING VALVE

The filling valve is located underneath the boiler.

The filling valve lever has 3 positions:

● Normal operating position.

● Closed position.

● Filling position

The valve lever should never be turned to the fill-

ing position unless the filling loop has been con-

nected and the system pressure requires topping-

up (see 3.1).

GETTING STARTED

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