Alpha 240eco User's

User's

Instructions

Alpha 240eco

Wall Mounted, Fan Assisted, Room Sealed, Gas Fired

Combination Boiler

For Technical help or for Service call ...

ALPHA HELPLINE

Tel: [phone]

0051

Nepicar House, London Road,

Wrotham Heath, Sevenoaks,

Kent TN15 7RS

Service Listed

Alpha 240eco G.C. No. 47 532 05

For use with Natural Gas only

Leave these instructions with the User

1 DESCRIPTION

The Alpha 240eco boiler is a wall mounted, fan assisted room-sealed combination boiler, providing both central heating and
domestic hot water at mains pressure.

As supplied, the boiler is suitable for central heating systems requiring between 9.3 and 23.3 kW (31 700 and 79 500 Btu/h).
After initial lighting of the boiler, it will provide central heating (as required) during the 'on' times set on your clock (if fitted). Hot

water is always available whenever a hot tap is opened.

2 USER CONTROLS

Pull the controls panel cover forward and down to gain access to the controls.

Pilot
Viewing
Window

Clock

Central
Heating
Thermostat

THERMOSTAT0THERMOSTAT

0

Domestic
Hot Water
Thermostat

0

Selector
Switch

SELECTOR GAS

Gas
Control

OFF

Indicator
Neons

2

3

1

04

bar

System
Pressure
Gauge

(if fitted)

Fig. 1

3 BOILER CONTROLS

1. CENTRAL HEATING THERMOSTAT

This thermostat controls the temperature of the water leaving the boiler for the heating system. For maximum output from the
radiators the thermostat should be left at maximum. If lower heating temperatures are required, turn the thermostat anti-clockwise.

2. DOMESTIC HOT WATER THERMOSTAT

This thermostat controls the temperature of the domestic hot water leaving the boiler. For maximum hot water temperatures the
thermostat should be left at maximum. If lower temperatures are required, turn the thermostat anti-clockwise.

3. SELECTOR SWITCH

This control allows the boiler to provide central heating and hot water or hot water only.
Note: The '0' (off) position must not be selected unless the boiler is turned off for long periods and the pilot is turned off (refer to

section 4). The internal clock and frost thermostat will not operate when the selector switch is in this position.

4. GAS CONTROL

This control is used for lighting and turning off the pilot.

5. PRESSURE GAUGE

This indicates the central heating system pressure. It should always be within the green band when cold, increasing slightly
when hot.
If the pressure falls below the green band, ie red area, refer to the label on the front cover for guidance on re-pressurising the
system. Or contact your Installer to have the system checked and pressurised.

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6. INDICATOR NEONS

When illuminated, the following conditions apply:-

Warning light (continuously on) - blocked flue or fan fault, contact your Service Engineer.
Electrical supply to the boiler is on.

Boiler is supplying hot water.
Boiler is supplying central heating.

7. OVERHEAT THERMOSTAT

This thermostat automatically switches the boiler off in the unlikely event of the boiler overheating. When the thermostat
operates, it turns the pilot off. If this continually happens, contact your Service Engineer.

8. PRESSURE RELIEF VALVE

If the central heating system overheats and steam or water is discharged from the pipe connected to this valve, turn the boiler
off and contact your Service Engineer. Your Installer should have told you where this pipe terminates.

9. FROST THERMOSTAT

The boiler has a built-in frost thermostat, which automatically operates the boiler if the water temperature falls below 5°C,
providing the electrical supply neon

is illuminated and the pilot is alight.

4 LIGHTING INSTRUCTIONS

Refer to Fig. 1 for boiler controls.

1. Ensure the following:­a. Electrical supply to the boiler is off.
b. All heating controls and thermostats are set to OFF or minimum position.
c. All isolation valves at the bottom of the boiler are in the open position (flats on the spindle in line with the valves).
d. The gas and water supplies are on at the mains.
e. The heating system pressure is within the green band as shown on the pressure gauge.

2. Turn the heating and hot water thermostats fully anticlockwise to 0 and set the selector switch to 0.

3. Switch on the electrical supply to the boiler.

4. Set any room thermostats to maximum and ensure that any clock is in an 'on' position. Refer to section 8, if a clock is fitted
in the boiler control panel.

5. Set the selector switch to

6. Fully depress the gas control and keep it pressed in. After a delay of about 20 seconds the ignition sparks will start and
the pilot will light. When the pilot lights (view through the window in the boiler case) keep the control pressed in for a
further 20 seconds then release. The pilot should remain alight.
If the pilot does not remain alight, release the control and turn it off in the direction of the arrow.

Warning: If the pilot is extinguished at this or any other time, wait at least 3 minutes before attempting to relight the boiler.

7. When the pilot remains alight:­a. Turn the hot water thermostat fully clockwise. Open a hot water tap, the main burner will light and the boiler will provide

hot water. Close the tap and the burner will go out.

b. Set the selector switch to

main burner will light and the boiler will provide central heating.

8. Set the boiler and all other controls, ie room thermostat etc, to the desired positions.

(hot water only). The neon will illuminate, indicating the electrical supply to the boiler is on.

(central heating and hot water) and turn the heating thermostat fully clockwise. The

To turn the central heating off i.e. in Summer:- Set the selector switch to
To turn the boiler off for short periods:- Set the selector switch to

Note: In this position the pump will automatically operate for 5 minutes in every 24 hours. If the pilot is alight and the water

temperature falls below 5°C, the built-in frost thermostat will operate the boiler automatically until the temperature of the water
in the heating system has been raised.

To turn the boiler off for longer periods:- Set the selector switch to 0 and turn the gas control in the direction of the arrow.
This will turn off the pilot. Switch off the electrical supply to the boiler. If required, all supplies i.e. gas, water and electricity may
be turned off at the mains. If there is any possibility of the boiler being left during frost conditions, then the boiler and system
should be drained and a label attached to the boiler drawing attention that the system has been drained. If this is required,
contact your Service Engineer.

(hot water only).

(hot water only).

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