MAKING MODERN LIVING POSSIBLE
Danfoss Heating
SET3M
Electro-mechanical 24 hour programmer
for heating and hot water
User Guide
For a large print version of these instructions
please call Marketing on 0845 121 7400.
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other
printed material. All trademarks in this material are property of the respective companies.
Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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Thank you for buying a Danfoss product
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User Instructions
SET3M
Electro-Mechanical 24-Hour Programmer
for Heating and Hot Water
Index
1.0 User Guide ....................................................................................................5
1.1 Your Programmer...............................................................................5
1.2 Setting the Clock ................................................................................5
1.3 Programming the Unit .....................................................................5
1.4 Using the Programmer ....................................................................6
1.5 Overrides...............................................................................................7
1.6 Manual Use ..........................................................................................8
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SET3M
1.0 User Instructions
1.1 Your Programmer
The SET3M programmer allows you to switch your hot water and
heating on and off at times that suit you.
Four tappets on the timing dial let you decide when you want
your hot water and heating to come on and go off each day. The
programmer provides 2 ON times and 2 OFF times per day. Using two
simple rocker switches you can control your heating and hot water
separately, to suit your lifestyle.
1.2 Setting the Clock
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• Remove the dial cover.
• Turn the dial clockwise until the
correct time is lined up with the
TIME setting line.
Day segment, covering 6.00am-
6.00pm, has an aluminium fi nish.
Night segment, covering 6.00pm-
6.00am, is coloured black.
IMPORTANT:
If you have a powercut you will
have to reset the time - and also
when the clocks change in Spring
and Autumn.
TIME
setting
line
Day
segment
Night
segment
1.3 Programming the Unit
There are four TAPPETS on your timing dial, two red and two blue:
• The red tappets are the ON
switches.
• The blue tappets are the OFF
switches.
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Tappets
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1 If you have not already done so, remove the dial cover.
2 Hold the black and silver dial with one hand and move the red
tappet marked ‘A’ clockwise to the time you want your HEATING/
HOT WATER to switch on in the morning.
NB. you may fi nd the tappets quite stiff , so you may have to push
them quite fi rmly to move them.
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3 Hold the black dial with one hand and move the blue tappet
marked ‘B’ to the time you want your HEATING/HOT WATER to
switch off in the morning.
4 You can set your other two tappets in the same way to set your
HEATING/HOT WATER for the afternoon or evening.
DO NOT switch the programmer on and off with the mains switch as
this will stop the clock/timer and aff ect the timed programme.
1.4 Using the Programmer
The 2 rocker switches are used to select how the SET3M controls your
hot water and heating. The heating and hot water can be operated
together or independently of each other (i.e. during the summer
when only hot water is required).
WATER switch
• OFF - the Hot Water is manually switched OFF and will stay off
until you change the position of the switch.
• Timed - the Hot Water will come on and go off at the times you
have programmed.
• Constant - the Hot Water will come on manually and stay on
constantly until you change the position of the switch.
A red light adjacent to the WATER switch is lit whenever the Water is
switched on.
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HEATING switch
• OFF - the Heating is manually switched OFF and will stay off until
you change the position of the switch.
• Timed - the Heating will come on and go off at the times you have
programmed.
• Constant - the Heating will come on manually and stay on
constantly until you change the position of the switch.
A red light adjacent to the HEATING switch is lit whenever the Heating
is switched on.
1.5 Overrides
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Sometimes you may need to change the way you use your heating or
hot water temporarily, i.e. due to unusually cold weather. The SET3M
has one convenient override which can be selected without aff ecting
the set programme.
The RED/BLUE wheel on the lefthand corner of the unit is an
OVERRIDE SWITCH.
Override
wheel
• When it shows RED the clock is ON
• When it shows BLUE the clock is OFF
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1.6 Manual Use
If you do not wish to use the timer facility, you can switch your
heating and hot water on or off manually by using the OVERRIDE
wheel without having to change the settings on the timer itself.
To use, turn the override wheel anti-clockwise until the thumbwheel
displays the setting you require.
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The override will automatically cancel at the next pre-set time
change.
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Danfoss Randall Ltd.
Ampthill Road
Bedford MK42 9ER
Tel: 0845 1217 400
Fax: 0845 1217 515
Email: danfossrandall@danfoss.com
Website: www.danfoss-randall.co.uk
Part No. 3548v01 03/11
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