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British Gas Service Listed G.C. No. 47 094 22 (24e) G.C. No. 47 094 23 (28e)
HAND THESE INSTRUCTIONS TO THE USER
Gas Safety (Installation and Use) Regulations 1994
In your own interests and that of safety, it is the law that all gas appliances are installed and serviced by a competent person in accordance with the regulation.
IF A FAULT OR GAS LEAK IS SUSPECTED. TURN OFF THE APPLIANCE AND CONTACT YOUR INSTALLATION COMPANY, LOCAL GAS REGION OR NEAREST VOKÈRA OFFICE.
Your Vokera Maxin is a central heating boiler supplying central heating and instantaneous domestic hot water only. In the winter when both Central Heating and Hot Water are needed the central heating circulation stops when hot water is being drawn off. This normally will not affect the level of heating.
Connection should be made to a 230v 50Hz supply. The appliance must be protected by a 3amp fuse if a 13amp (BS 1363) plug or fused spur is used.
As the colour of the wires in the mains lead to this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:-
The wire which is coloured green-and-vellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol 🛨 or coloured green or green-and-yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black
Minimum - above casing 225mm (9in) Minimum - below casing 200mm (8in) Minimum - In front 600mm (24in) Minimum - At sides 12mm (1/2in) from casing
If the appliance is fitted in a compartment it should not be used as a storage cupboard (e.g.for food).
The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red
MAXIN 24e & 28e USERS
3.0 Safety Limits
The water pressure gauge (7) should read between 1bar and 1.5 bar when the system is cold. Leaks or radiator venting will reduce this. Call in your service installer if excessive topping up of the system to restore pressure is necessary.
Fig. 3
Fig. 4
MAXIN 24e & 28e USERS
A built-in safety valve operates if boiler pressure exceeds 3bar whether hot or cold. If the safety valve operates (water/steam discharges to drain) switch off and call your Installer or Service Engineer.
3.2 If the appliance water temperature rises too high, a high limit thermostat operates to extinguish the burner. This automatically resets when the appliance cools sufficiently.
If the High Limit thermostat operates again the appliance must be checked by your Installer or Service Engineer.
4.0 Shutting Down The System
Turn ON/OFF/Mode selector switch (5) to 'O' (Fig. 7)
For longer periods also: Turn off gas cock (Fig. 8) and Turn off main electricity supply to boiler.
However, if the building is vacated when there is risk of freezing shut down the boiler as described and drain the system: Open all heating radiator valves and drain through the cocks usually provided at the lowest point of the system. To ensure draining of radiators open radiator air vents remembering to close them when the operation is complete.
Alternatively, install a frost stat and leave the mains electricity and gas supply turned on.
Relight by following steps 1.0 or 2.0 given previously, after ensuring that refilling of the sealed system has been carried out.
6.0 Cleaning The Outer Case
Use a clean damp cloth. Do not use abrasive cleaners.
Your Vokera Maxin must be serviced annually. Please contact your local Vokera Service Agent, your local Gas Region or a competent installer.
Setting the time.
The time of day can be set by grasping the outer edge of the black dial and turning it in a clockwise direction until the correct time is in line with the white pointer.
Setting the 'switching times'
The 'ON' periods are set by sliding the green tappets, adjacent to the time periods required, to the outer edge of the dial.
The tappets that remain at the centre of the dial will be the 'OFF' periods.
N.B. The smallest switching time (ON or OFF) is 15 minutes.
To select 'Timed' mode move the selector switch in the middle of the clock face to the position. To select 'Constant' mode move the selector switch in the middle of the clock face to the 'I' position. To select 'Off' mode move the selector switch in the middle of the clock face to the 'O' position.
time and programme times
The Vokera digital timeswitch has besides the normal group timing facility, capacity to pro gramme individual daily settings. It has a total of 20 storage spaces for switching operations, each space can be programmed as either an ON or OFF instruction, and can be applied to any one day or four day combinations.
Days of week 1234567 ON selection • OFF selection • Continuously ON • Continuously OFF • Winter/Summer time +1hr Timed mode • Override selection • Programme spaces _: ____ Number of free spaces FR
Press the reset button using a pencil or similar instrument. This clears the memory of unwant ed information in readiness for programming. The reset button should be used in the event of local interference causing the timeswitch to appear to malfunction. Local interference dependant on location may be present from time to time.
Important Note: After programming is complet ed, and you return the timeswitch to the current time display with the (B) button, the timeswitch will not activate any switching instruction re quired for the current time. You may need to manually select the desired switching state with
the X button. Thereafter, as the unit encoun ters further switching instructions in the memory in real time, it will correctly activate all subse quent switching instructions.
With the 🔨 button you can manually operate the switch to switch ON or OFF outside the programmed times, or you can put the switch into a permanent ON or OFF condition. The first press of the 🅄 button advances the output to ON or OFF ( ( or ( ) together with the 🕄 symbol displayed to show that the programme has been overridden) without disrupt ing the programme sequence. The second press fixes the output in the continuously ON [ ] condition. The third press fixes the output in the continuously OFF [ ] condition. In either fixed condition, the timeswitch will only revert to the timed condition if you press the 🔨 button once more.
Press the 'Prog.' button repeatedly to view each of your programmed instructions in the order in which they were programmed. You can stop to alter any of the instructions using the buttons as described in 'Entering switching times' above.
In the case of mains electrical failure, the internal battery will ensure that the actual time of day continues to operate and that the automatic switching programme remains intact. The clock can be programmed completely even without mains supply, provided the battery back up is fully charged. (Charging time 70 hours approx.)
From summer time to winter time: Depress the +/-1h key once (symbol +/-1h disappears from display)
From winter to summer time: Depress the +/-1h once. Display shows +/-1h symbol) Alternatively you can follow the instructions described in 'Set current time and day' above.
Vokèra Ltd
Head Office and Accounts: Clarisham House, Morson Road, Enfield, Middlesex EN34NQ Tel. 0181-804 7202 Fax. 0181-804 8163 Northern Region: Stubs Beck Lane, West 26 Business Park, Whitehall Road, Cleckheaton, West Yorkshire BD19 4TT Tel. 01274 865556 Fax. 01274 865557 Scottish Region: Shuna Street, Maryhill, Glasgow G20 9NW Tel. 0141-945 4944 Fax. 0141-945 5136