Sangamo CHOICEPR3N User Manual

ON
OFF
AUTO
ALL DAY

RESET

Choice PR3n

ON
OFF
AUTO
ALL DAY

RESET

Choice PR3n

Fit & forget...

Choice PR3n - 3 Channel Programmer

User Instructions

Introduction

This programmer can automatically switch your
central heating or hot water ON and OFF up to 3 times
a day, at whatever times you choose. Timekeeping is
maintained through power interruptions by a non­replaceable battery designed to last for the lifetime
of the programmer. The clock is automatically put
forward 1 hour at 1:00am on the last Sunday of March
and back 1 hour at 2:00am on the last Sunday of
October. The clock is factory pre-set to UK time and
date, but you can alter the time setting if you wish.

During installation, the installer selects 24 hour, or

5 day/2day, or 7 day programming and 2 or 3 on/o

periods per day, via a 4 position DIP switch on the
back of the unit (see installation instructions).

IMPORTANT: These settings should only be

changed by a qualied person. Contact your
installer.

IMPORTANT: This programmer is not suitable
for the switching of devices greater than 2 Amp
rated per channel. (e.g. Not suitable for use as an
immersion timer)

Conguration

When setting time, date or changing programme

times the rst screen displayed indicates the
conguration as set up by the installer. (See ‘Setting

The Time section)

Conguration Display

2 ON/OFF Pumped System 2PU

3 ON/OFF Pumped System 3PU

Times for Central Heating and How Water can be
independently set.

The 24 hour, or 5 day/2day, or 7 day programming

option as set up by the installer can also be veried

at this stage by how the Monday to Sunday indicators
are displayed.

Programming
Option

7 DAY Mon to Sun individually

5/2 DAY Mon to Fri together then

24 HOUR Mon to Sun together shown

Now press any button to move to Setting the Time
and Day.

Built In Programme

For convenience, the programmer has a built in
programme which will be satisfactory for many
people, but which can be changed very easily (see
section CHANGING PROGRAMME TIMES). Once the
unit is powered up this built in programme will run.

If the user changes from the built in programme and
wishes to return to it, then pressing the reset button
with a non metallic pointed tool will return the unit
to the built in / default programme.

Mon to Sun Indicators

ash

shown

Sat & Sun together

[5]

NOTE: Every time the reset is pressed, the time
and date must be set again. See the sections

‘Setting The Time & Setting The Date’

Factory Programme Settings

2Pu 3Pu Mon-Fri Sat-Sun

1st ON 1st ON 6:00am 7:00am

1st OFF 1st OFF 8:30am 9:00am

- 2nd ON 12:00 noon 12:00 noon

- 2nd OFF 12:00 noon 12:00 noon

2nd ON 3rd ON 4:30pm 4:30pm

2nd OFF 3rd OFF 10:30pm 11:30pm

If the unit is installed as a 24 hour programmer the
built in programme will be the same for each day (i.e.
Sat-Sun be same as Mon-Fri above).

Selecting Operating Mode

CH1 MODE

ON Central Heating and Hot Water is ON

AUTO Central Heating and Hot Water will be

ALL
DAY

OFF Central Heating and Hot Water is OFF

continuously

switched ON or OFF as programmed

Central Heating and Hot Water will
be switched ON only once each day

between the rst ON time and last OFF

time

continuously

CH2 MODE

HW MODE

Setting The Time

• Press the SET button once. The conguration
setting will appear on the screen.

• Press the SET button again. The clock icon [1] on

the screen will ash.

• Press the +/- buttons to adjust the time. Time will
change quicker if pressed continually.

• Press SET once to move on to setting the DATE or
press multiple times to return to RUN mode.

Setting The Date

• Press the SET button until the Y:XX icon (year)

appears and the D (DATE) icon [2] ashes.

• Press the +/- button to set the year.

• Press NEXT button. M:XX appears (month).

• Press +/- button to set month.

• Press NEXT button. D:XX appears (Day).

• Press +/- button to set day.

[6]

[1] [2][3] [4]

You can review or edit the date you have set just
by pressing NEXT button again and repeating the

sequence above. To conrm the date and move on to

PROGRAM mode press SET button once or press SET
button multiple times to return to RUN mode.

Changing Central Heating Times

The built in programmes can easily be changed to
better suit your lifestyle.

• Press SET button until radiator icon [3] ashes in
the display and 1 ON [4] appears. This indicates

the time shown on the display is the rst ON time.

• By pressing the +/- buttons you can alter the ON
time to the time you want.

• Press NEXT button, display will now show 1 OFF
[4].

• By pressing the +/- buttons you can alter the OFF
time to the time you want.

• Press NEXT button to access remaining ON/OFF
periods and alter in same manner as above.

• To return to RUN mode, press the SET button until
the display indicates RUN on the display

NOTE: Programming is in 10 minute segments.

Changing Hot Water Times

Press SET button until tap icon [3] ashes in the
display and 1 ON [4] appears. This indicates the time

shown on the display is the rst ON time and proceed
in same manner as ‘To change the Central Heating

Times’ above.

7 Day Programmer Option

If the unit is installed as a 7 day programmer, the
initial programme displayed will be for Monday.

You can go to any date of the week by pressing the
DAY button repeatedly.

The ON/OFF times can be changed for each day
as described above in the section “CHANGING
PROGRAMME TIMES”.

If you press the COPY button, the current programme
will be copied onto the next day.
NOTE: it is not possible to copy Sunday to Monday.

5/2 Day Programmer Option

If the unit is installed as a 5 day/2 day programmer,
the initial programme displayed will be for Monday
to Friday.

Pressing the DAY button will take you to the
programme for Saturday and Sunday.

The ON/OFF times can be changed for each day
group as described above in the section “CHANGING
PROGRAMME TIMES”.

If you press COPY button, the current programme
will be copied onto the next day group.

ON
OFF
AUTO
ALL DAY

RESET

Choice PR3n

24 Hour Programmer Option

If the unit is installed as a 24 hour programmer, the
built in programme will be the same for each day.
The COPY & DAY buttons have no aect if installed
as a 24 hour programmer.

Programming Notes

The unit will automatically return to normal running
mode if a period of 30 seconds passes without any
buttons being pressed.

For convenience, to allow for programmes to go past
midnight, the programme day is from 03:00am to
02:50am the next day.

If a programme is required to run from 1.00 am to

8.00 am then 2 programmes must be used because it
is not possible to programme through 2.50 am. (The
programme should be split up into two sections; 3.00
am > 8.00 am and 1.00 am > 2.50 am).

[6]

Reset

Press the reset button with a non-metallic pointed
tool to restore the built in programme. As well as
restoring the built in programme, it also resets the
time to 12:00pm and the date to 01/01/2014. Initially
the display shows all segments lit for a few seconds,

but then will show the current conguration. See
‘Setting The Time’ section to continue.

As a safety feature aer reset the unit will be in OFF

operating mode. Reselect your required operating
mode.

Using Advance

The ADVANCE function allows the user to move to

the next ON or OFF programme for a “one o” event,

without having to change the programme or change
the operating mode.

Warning: The ADVANCE function is only available
when programme is in AUTO or ALL DAY operating
modes.

To advance Central Heating 1 or 2

Press the appropriate Central Heating channel ADV
button. This will turn the Central heating ON if it is in
an OFF period and OFF if it is in an ON period. It will
stay in this state until either ADV button is pressed
again, or until a programmed ON/OFF period

commences. The word ADV [5] will appear in the le

hand of the LCD.

To advance Hot Water

Press the Hot Water channel ADV button. This will
turn the Hot Water ON if it is in an OFF period and
OFF if it is in an ON period. It will stay in this state
until either ADV button is pressed again, or until a
programmed ON/OFF period commences. The word

ADV [5] will appear in the tle of the LCD.

SERVICE AND WARRANTY

Your product is not user serviceable. PLEASE DO NOT TRY TO DISMANTLE THE UNIT.
This product is guaranteed by your supplier for 5 years from the date of manufacture. If it should become defective
please contact your installer or supplier for a replacement unit or visit www.sangamo.co.uk/returns

This product must meet Waste Electronic and Electrical Equipment Regulations (WEEE) for suitable environmental
recycling, recovery and/or disposal. End of life products should be handled in line with local regulations. Alternatively
return end of life product to Sangamo for correct disposal.

CUSTOMER CARE POLICY

As part of Sangamo’s continuous improvement program, the company operates a Customer Care policy. This means we
welcome your comments and complaints, as it can help us to improve our services to you, our customer.

Using +HR Boost

For +Hr Central Heating 1 or 2

Press the appropriate Central Heating channel +HR
button to make the desired selection with one, two
or three hours extra heating [6] and cancel options

oered.

Warning: The +HOUR function is only available
when programme is in AUTO, ALL DAY or OFF
operating modes.

If the Central heating operating mode is OFF, then
it will switch on for the extra hours selected. If the
Central heating mode is AUTO or ALL DAY, then
during an OFF period, it will switch on for the extra
hours selected. If during an ON period, then it will
temporarily extend that programme by the number
of hours selected.

For +Hr Hot Water

Press the Hot Water channel +HR button. to make
the desired selection with one, two or three hours
extra heating [6] and cancel options oered.
Warning: The +HOUR function is only available
when programme is in AUTO, ALL DAY or OFF
operating modes.

If the Hot Water operating mode is OFF, then it will
switch on for the extra hours selected. If the Hot
Water mode is AUTO or ALL DAY, then during an OFF
period, it will switch on for the extra hours selected.
If during an ON period, then it will temporarily
extend that programme by the number of hours
selected.

NOTE: If the programmer is in the OFF mode and
then +HR button is pressed (+1 HR, + 2 HR, or + 3 HR)
and the resulting time of the boost overlaps a START
/ ON time in the AUTO mode programme memory
then the boost will disengage. If this happens simply
press +HR button again and the boost will activate
for the time period chosen.

[1] [2][3] [4]

[5]

Holiday Mode

The Holiday function allows the user to turn all
channels to the OFF operating mode, for a settable
amount of days from 01-99 days. During this
function a suitcase icon will be displayed.

The number of days will decrease at midnight each
day.

The +HR boost override can be used during a
holiday period.

1. Press & Hold DAY button for 4 seconds to enter

the holiday function , d:01 ashes.

2. Press +/- button to set the holiday days.

3. Press DAY button to activate.

4. Press & Hold DAY button for 4 seconds to

cancel a holiday period.

Warning: The Holiday function is only available in
AUTO, ALL DAY or ON operating modes.

Power Interruption

In the event of a mains supply failure the screen will
go blank but the back-up battery ensures that the
programmer continues to keep the time and retain
your stored programme. When power is restored,
if there has been no change to the rear DIP switch,
the programmer returns to its expected operating
condition.

If the conguration setting on the rear DIP switch

has been altered during the power interruption the

screen will initially show the new conguration. And

the appropriate factory default programme (see
BUILT IN PROGRAMME section) will be installed.
Press SET button to return to RUN mode.

If you have a problem or require any

further information please contact us on:

01475 745131

Sangamo Limited

Industrial Estate, Port Glasgow,

Renfrewshire, PA14 5XG

Tel [phone]

Fax: [phone]

Email: [e-mail]

Web: www.sangamo.co.uk

Due to our policy of continuous product improvement and development, the specications in this guide may be subject

to change without prior notice.

143797 Issue C

WEE/JH0069TY

Fit & forget...

16

Tahama 5 bold font or
as approved

PR1n & PR3n
143786

24Hr

4

5/2 Day

Gravity

Pumped

1 2

PR2n
143787

2 on/offs 3 on/offs

7 Day

3

REV DRAWN BY

ENGINEERING

CHANGE

NUMBER

ALTERATION DETAIL

J Dewar

n/a

First issue

16

3

5

4

Choice PR3n - 3 Channel Programmer

Installation Instructions

Pre-Installation Set Up

Before installing, set the bank of 4 DIP

Switches on the back to congure the unit
according to the chart below:

Not Used

2

24Hr

2 on/offs

31 4

DIP Switches Shown in Factory Default

Positions. (black = raised actuator of

switch)

24 Hr Runs same programme every day.

5/2 Day Allows dierent on/o times at

weekend.

7 Day Allows dierent on/o times every
day.

Installation Safety Notes

This unit must be installed by a suitably
qualied person in accordance with the

latest IEE Wiring Regulations.

Isolate mains supply before commencing

installation. Please read all installation
instructions before proceeding.

Ensure that the xed wiring connections to
the mains supply is via a fuse rated at not
more than 3 amps and a class ‘A’ switch

having a contact separation of a minimum

of 3mm in all poles. The recommended

cable sizes are 1.0mm2 or 1.5mm

Not Used

7 Day

5/2 Day

3 on/offs

2

Technical Data

Power Supply: 230V AC, 50Hz
Operating Temperature: 0°C to 40°C
Switch Rating: 230V AC, 2(1)A per channel
Contact Type: 1B , Micro-Disconnection
Battery Type: Lithium Cell CR2032
Enclosure Protection IP30

Plastics Thermoplastic, ame retardant

Insulation Class Double

Wiring: For xed wiring only
Backplate Industry standard
Dimensions: 140mm x 87mm x 37mm

Clock 12 hour am/pm, 1 minute resolution
Summer/Winter time change Automatic

Clock Accuracy +/- 1.5 sec/day
Program Cycle 24hr, 5/2day or 7day selectable.
Program On/os per day 2on/o, 3on/o selectable

Program Resolution 10mins

Program Selection Auto, On all day, On constant, O
Program Override +1,2 or 3 Hr Boost & Advance to next program
Complies with EN60730-1, EN60730-2.7,
EMC Directive 2004/108/EC,

LVD Directive 2006/95/EC

Fitting Back Plate –
Direct Wall Mounting

1. Position the back-plate (terminals

along top edge) with 100mm (min)

clearance to its right, 25mm (min)

above, 10mm (min) below and le.

Ensure that the supporting surface
will fully cover the back of the
programmer.

2. The ideal location would be 1.4M

above oor level, easily accessible,
reasonably lit and free from
condensation or temperature
extremes.

3. Oer the back plate to the wall in the
position where the programmer is to

be mounted remembering that the
back plate ts to the le hand side
of the programmer. Mark the xing

positions through the slots in the

backplate, drill and plug wall, then

secure back plate in position using
screws.

4. All necessary electrical connections

should now be made. Ensure that the

wiring to the back-plate terminals

leads directly away from the terminals
and is completely enclosed within
the back-plate aperture. Wire ends
must be stripped and screwed to the

terminals so that minimal bare wire is
showing.

be used to secure the unit to the wall.

2. All necessary electrical connections

should now be made. Ensure that the

wiring to the back-plate terminals

leads directly away from the terminals
and is completely enclosed within
the back-plate aperture. Wire ends
must be stripped and screwed to the

terminals so that minimal bare wire is
showing.

New Installations

Example circuit diagrams for typical

installations are shown over. These

diagrams are schematic and should be
used as a guide only. Please ensure that

all installations comply with the current
IEE regulations.

For reasons of space and clarity not
every system has been included and
the diagrams have been simplied, for

instance some Earth connections have

been omitted.

Other control components shown in

the diagrams i.e. Valves, Room Stats

etc. are general representations only.

However the wiring detail can be applied
to the corresponding models of most

manufacturers.

Continued Over...

If the unit is tted to a metal surface, IT IS

ESSENTIAL that the metal be earthed.
DO NOT use a surface mounting box.

No earth connection is required as the
product is double insulated but ensure

continuity of earth throughout the system.

Fitting Back Plate –
Wiring Box Mounting

1. Fix the wall-plate to a ush mounting
single conduit box type UA1 (BS4662)
using M3.5 x 14 screws. Take care
to ensure the opening is adequate
and will allow mounting of the unit

onto the base plate. The use of glue,
mastic, or other sealants MUST NOT

New Installations

Cylinder and Room Thermostat Key:

C=Common Call = Call for heat or break on rise SAT = Satiseld on rise N= Neutral

Fitting The Programmer

Loosen the two retaining screws on the
bottom of the back plate.

Now t the programmer to the back plate,

ensuring the lugs of the
back plate engage with the
slots on the programmer.

Swing the bottom of the
programmer into position
ensuring the connection
pins on the back of the unit
locate into the terminal
slots in the back plate.

Tighten the two screws to x the unit

securely.

Commisioning

Switch on mains supply. Referring to the

user guide:

Existing Installations

1. Remove old programmer from its
back plate mounting loosening any

securing screws as dictated by its
design.

2. Check compatibility of existing back
plate & wiring arrangement with that

of the new programmer. See online

Programmer Compatibility Guide for
direction.

3. Make all necessary changes to back

plate & wiring arrangement to suit

new programmer

Electrical Connections

1. Use the buttons to ensure correct
product functionality.

2. Set timing and programme details
in accordance with customer

requirements.

3. Normally unit will be le with channel

in ‘Auto’ mode.

4. Leave these installation instructions
with customer for reference.

In the interests of continuous product

improvement we reserve the right to alter

designs, specications and materials
without prior notice and cannot accept

liability for errors.

SERVICE AND WARRANTY

Your product is not user serviceable. PLEASE DO NOT TRY TO DISMANTLE THE UNIT.
This product is guaranteed by your supplier for 5 years from the date of manufacture. If it should become defective please contact your

installer or supplier for a replacement unit or visit www.sangamo.co.uk/returns

This product must meet Waste Electronic and Electrical Equipment Regulations (WEEE) for suitable environmental recycling, recovery and/
or disposal. End of life products should be handled in line with local regulations. Alternatively return end of life product to Sangamo for
correct disposal.

CUSTOMER CARE POLICY

As part of Sangamo’s continuous improvement program, the company operates a Customer Care policy. This means we welcome your
comments and complaints, as it can help us to improve our services to you, our customer.

Due to our policy of continuous product improvement and development, the specications in this guide may be subject to change without

prior notice.

143794 Issue C

If you have a problem or require any
further information please contact our

technical team on:

01475 745131

Sangamo Limited

Industrial Estate, Port Glasgow,

Renfrewshire, PA14 5XG

Tel [phone]

Fax: [phone]

Email: [e-mail]

Web: www.sangamo.co.uk

WEE/JH0069TY