ELECTRAFLOW CONTROLLER
USER INSTRUCTIONS
INTRODUCTION
This Controller has been specifically developed for the Electraflow heating system to
efficiently provide you with both hot water and central heating at times tailored to meet the
needs of your household.
Through the night, water in the storage cylinder will be heated by low cost off-peak electricity,
available for use the following day. Depending on your hot water requirements, there should
normally be sufficient to last the whole day. Further hot water can be quickly obtained by
using the hot water Boost feature. The Boost will re-heat the hot water for a fixed period.
The central heating is heated by an electric boiler. The Controller provides a 7-day
programmable timer to turn on the central heating, up to three times each day of the week.
For your convenience a heating Advance feature is also provided to allow easy extension of
the programme times.
USER CONTROLS
The Controller has a backlit display and two LED indicators to show the system status during
normal operation. The display is also used to change the controller’s settings via an easily
accessible configuration menu.
During normal operation, the Boost key is used to enable hot water Boost and the Up key is
used to enable the central heating Advance feature. The Left key is used to set the CH
mode of operation and the Right key sets the HW mode.
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BUILT IN PROGRAMME
Day
Time
Period
On Time
Off Time
Weekend
1st
07:30
10:00
2nd
12:00
12:00
3rd
17:00
23:00
Week Day
1st
06:30
8:30
2nd
12:00
12:00
3rd
16:30
22:30
16:30
HW On
16:30
CH Off
16:30
1st Jan
16:30
Saturday
Hot Water Status
Central Heating Status
Display
Description
Display
Description
HW Off
Hot Water is off
CH Off
Central Heating is off
HW On
Hot Water timer is
active.
CH On
Central Heating timer
is active.
HW 115
Hot Water Boost
will remain on for a
further ‘115’ mins.
CH Adv
Central Heating timer
has been Advanced.
For your convenience the Controller’s central heating timer has been pre-programmed with
commonly used heating time periods during a typical week-day and weekend.
The default time settings for the central heating timer are as follows:
For many people these times will be satisfactory. However if you wish to change the times,
follow the instructions given in the section CHANGING PROGRAMME TIMES.
The hot water 24hr timer will have been set during installation to follow the off-peak tariff
offered by your electricity provider. In the event that your electricity provider changes your
off-peak tariff, please contact your Heating Engineer.
GENERAL FUNCTIONALITY
During normal operation the first line of the Controller’s display shows the current time, whilst
the second line alternately shows the status of the hot water (HW) and central heating (CH)
followed by the current day and date:
The following table lists the hot water (HW) and central heating (CH) status messages:
Note the symbol when displayed means that the thermostats of the associated heater are
calling for heat.
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Hot Water Status
Central Heating Status
LED
Description
LED
Description
ON
Hot Water timer or
Boost is on
ON
Central Heating timer
is on or CH has been
Advanced
CH Mode
Description
O FF
Disables all the CH 7 day timers. The CH Advance is still functional.
Timed
The CH 7 day timers and CH Advance are functional
Constant
The CH is on continuously
HW Mode
Description
O FF
Disables the HW 24hr timer. The HW Boost is still functional.
Timed
The HW 24hr timer and HW Boost are functional
Constant
The HW is on continuously
The two indicators labelled ‘HW’ and ‘CH’ provide the following status information:
SELECTING THE OPERATING MODE
The Controller has 3 operating modes for both the CH and the HW control, and these are
selected directly from the keypad.
The CH operating mode is selected using the Left key, with each key press changing the
operating mode to the next available setting:
The HW operating mode is selected using the Right key, with each key press changing the
operating mode to the next available setting:
For the majority of people the Controller’s CH Mode and HW Mode will always be set to
Timed. It is common practice to turn off the Central Heating timers during the summer
months by setting CH Mode to OFF. Both CH Mode and HW Mode may be required to be
set to OFF if the dwelling is empty for any length of time.
Note: HW Boost is available even when the Hot Water timer is off; and the CH Advance is
available even when the Central Heating timer is off.
CONFIGURATION MENU
To enter the Configuration menu press the up and down cursor keys simultaneously.
Once in the menu, the four navigation keys together with the Boost key are used to review
and revise the settings. The left and right cursor keys are used to traverse the menu items
and sub-menu items (where applicable). The Boost key is used to view menu items and to
select sub-menus (where applicable).
When a menu item is viewed the current option setting will appear flashing. The up and down
cursor keys are used to scroll through the selection options available. To select an option,
press the Boost key.
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The items contained in the menu are as follows:
Menu Item
Description
Date
To set the current date
Time
To set the current time
CH Timer
To set the central heating 7-day timer, On and Off times for
each day of the week
Exit
Return to normal Controller operation
Sat 1
st
Jan 2005
Sat 1
st
Jan 2005
6:30
Hrs BST
6:30
Mins BST
Note whilst in the menu, if no keys are pressed for a period of approximately 30 seconds,
then the controller will automatically exit back to normal operation.
SETTING THE DATE AND TIME
Note:
It is important that the date is set before attempting to set the current time. If the date is
incorrect the user may find that they have to change the time again after setting the date
as the GMT/BST setting may change.
(GMT/BST = Greenwich meantime/British Summertime)
The item Set Date is used to set the calendar (day-of-month, month and year). The
Controller automatically switches between GMT and BST at the appropriate date and time
during the year.
The year or day-of-month will flash to show which item is currently being changed. The left
and right keys will change from year to day-of-month and back again. To change the year
or day-of-month the up and down keys will increase or decrease the current setting. When
the date is set, the day (Mon – Sun) should be checked and if correct pressing the Boost
button will save the settings.
Also the year should be checked and/or changed before the day-of-month is set. If the year
is wrong while setting the day-of-month the calculated day of the week may be incorrect.
The item Set Time is used to set the Controller’s clock. The display shows the current time
setting on the first line. The hour or minute digits will be flashing to show they are the current
item. The second line will indicate this by displaying ‘Hrs’ or ‘Mins’. Use the Left and Right
cursor keys to select between the hours and minutes.
The Up and Down cursor keys are used to increase or decrease the time. N.B. holding either
key down will cause the numbers to auto-scroll.
To confirm the entered time setting, press the Boost key.
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CHANGING THE PROGRAMME TIMES
1st 6:30
8:30
1st 6:30
8:30
2nd 12:00
12:00
3rd 5:30
10:30
3rd 5:30
10:30
2nd 12:00
12:00
The Controller’s Central Heating 7-day timer has three time periods for each day of the week.
Each time period can be set at minimum intervals of 5 minutes.
The Controller will prevent the On and Off times from being entered in the wrong order.
Attempting to move the On time past the associated Off time, will cause the Off time to move
as well.
The Controller will not allow the three on-time periods to overlap. If the displayed On or Off
time flashes ‘LIMIT‘ while the time is being changed it indicates an incorrect time setting is
being attempted. Incorrect times could be:
- On time cannot be set before midnight of the current day.
- On time is clashing with the next period On time.
- On time cannot be set past midnight of the current day.
- Off time cannot be set before the On time in the current period.
- Off time cannot be set after the On time of the next period.
If a timing clash occurs while setting the time period, the incorrect time must be altered
before the current setting can be correctly entered.
The 3rd time period on any day may be extended into the next day. The Controller will not
allow this period to overlap the next day’s time periods.
The menu item CH Timer is used to configure the Controller’s CH timer; which has three
time periods for each day of the week.
On entry the display shows the current day on the first line. The ‘day’ will be flashing to show
it is the current item. Use the Left and Right keys to select a specific day. To view and edit
that day’s time periods, press the Boost key.
Note that any specific on-time period is disabled by setting the On and Off times to exactly
the same time.
On selecting a specific time setting, the display shows the time period ‘1
rd
‘3
’ and the On time setting on the first line. The period Off time is displayed on the
second line.
Use the Left and Right cursor keys to move between each of the On and Off times. As each
time becomes the current item, the digits will be flashing and the symbol ‘ ‘will be
positioned next to it. Using the Left and Right keys also moves between each available time
period as shown below:
st
’,‘2
nd
’ or
The Up and Down cursor keys are used to increase or decrease the selected time in 5
minute intervals. N.B. holding either key down will cause the numbers to auto-scroll.
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To confirm the entered timer settings, press the Boost key. Once confirmed another day can
Boost!
OFF
Boost!
ON 120
Boost!
ON 30
Boost!
ON 60
be selected.
At any time whilst in a timer setting, pressing the up and down cursor keys simultaneously
will cause you to exit the menu, and place the controller back in Status display mode. Any
changes made to the time setting will be saved.
HOT WATER BOOST
The Hot Water may be turned on for a fixed time period of 30, 60 or 120 minutes using the
Boost button. Each consecutive press of the HW Boost Button will change the time period
to the next available setting as shown below.
Note that the Boost button is disabled whilst the Hot Water 24timer is on.
When the Boost is on it can be cleared by a single press of the Boost button.
CENTRAL HEATING ADVANCE
The CH timer settings may be manually advanced using the CH Advance button (the UP
key). The advance function is initiated by briefly pressing the UP key.
This will turn the Central Heating on if it was in an off period and vice versa. It will stay in this
state until either Advance is pressed again or until the next timed On/Off event.
The display will indicate when the Advance is operational (CH Adv).
POWER INTERRUPTION
The Controller uses a long-life non-rechargeable battery which will maintain the configuration
settings without any mains electricity supply. This will provide cover for all unexpected power
interruptions during the life of the Controller.
REPAIR AND SERVICE
The Controller is NOT user serviceable.
Do not dismantle the Controller.
The Controller has several in-built safety features to ensure that it functions correctly. In the
unlikely event of a fault developing please contact your installer or a qualified electrician.
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McDonald Engineers Ltd.
Flemington Road,
Queensway Ind. Est.,
Glenrothes, Fife
KY7 5QF.
Tel. 01592 611123
Fax. 01592 611166
info@mcdonald-engineers.com
www.mcdonald-engineers.com
This product complies with the following EC Directives:
Electro-Magnetic Compatibility Directive.
(EMC) (89\336\EEC), (92\31\EEC)
Low Voltage Directive.
(LVD) (72\23\EEC), (93\68\EEC)
Copyright © 2006 3Minds Limited.
All rights reserved.
8 of 8 Electraflow Rev1.0
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