Horstmann C27 - Resetting and Programming Basics; Resetting the Programmer; Setting ON;OFF Times; System Type Impact

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Electronic equipment can in some circumstances be affected by electrical interference. If the

programmer’s display becomes frozen or scrambled; or if you wish to revert back to the default time

settings please use the following procedure.

SETTING DAY AND TIME OF DAY

Should you encounter any problems, please refer to the

QQuueessttiioonn aanndd AAnnsswweerr

section located on page 4.

RESETTING THE PROGRAMMER

Press SELECT once.

Programme goes from

AUTO to ALL DAY

Press SELECT again.

Programme goes from

ALL DAY to 24 HRS

Press SELECT again.

Programme goes from

24 HRS to OFF

Press SELECT again.

Programme goes from

OFF to AUTO

Channel will operate

from first ON until last

OFF period

Channel will be

continuously ON

Channel will be

continuously OFF

Programmer will return

to normal ON and OFF

times

BOOST FUNCTION - 1hour temporary override

Press BOOST button:

Your Hot Water will be

Boosted for 1 hour

At any time during a BOOST

period press BOOST again to

return to normal

programming

ADVANCE FUNCTION - Brings forward next ON or OFF operation

Press ADVANCE button

to move to the next

Heating ON/OFF time

To cancel the advance press the ADVANCE

button again. This will return the unit to

its normal programme

INFORMATION AND ADVICE

Programming ON/OFF times

If a Heating or Hot water period is not required it can be cancelled by setting the ON and OFF

settings to the same time. Example ON 10:00am OFF 10:00am

FULLY PUMPED OR GRAVITY SYSTEM

The installer will have set the programmer to suit the installed system. If this is a Fully pumped

system this will allow independent control of the Central heating and Hot water, however on a Gravity

system the Central heating and Hot water are linked so that it is not possible to use the Central

heating independently.

This will allow only one common time setting for both Hot Water and Central Heating.

PPaaggee 22

PPaaggee 33

Press the SET

button until the SET

indicator is next to the

CLOCK position.

Use

PLUS and

MINUS

buttons to

adjust time

Use PLUS

and MINUS

buttons to

adjust day

Press

ENTER

Press SET button

until the SET

indicator is next to

the Central Heating

or Hot Water

position

Repeat this

process for 2nd

and 3rd settings

Press

ENTER

Press

ENTER

Press

ENTER

SETTING THE ON AND OFF TIMES

The SET indicator must remain in the RUN position for the following instructions.

The following actions work independently on either Hot Water or Central Heating.

SPECIAL FEATURES

Use PLUS

and MINUS

buttons to

adjust day

Use PLUS and

MINUS

buttons to adjust

the 1st ON time.

Use the PLUS

and MINUS

buttons to adjust

the 1st OFF time.

Programme the

remaining days.

If you require this

programme on any other

day of the week use the

PLUS and MINUS buttons to

select day and press COPY

Press the SET

button until the SET

indicator is next to the

RUN position.

Press

ENTER

Press SET button

until the SET

indicator is returned

to RUN position

6:35

M T W T F S Su

SET

M T W T F S Su

AUTO

ALL DAY

24 HRS

OFF

AUTO

ALL DAY

24 HRS

OFF

AUTO

ALL DAY

24 HRS

OFF

AUTO

ALL DAY

24 HRS

OFF

HW CH

12:00

RUN

CLOCK

HW PROG

CH PROG

M T W T F S Su

DAY

RUN

CLOCK

HW PROG

CH PROG

M T W T F S Su

6:30

RUN

CLOCK

HW PROG

CH PROG

RUN

CLOCK

HW PROG

CH PROG

6:35

AUTO

ALL DAY

24 HRS

OFF

6:35

RUN

CLOCK

HW PROG

CH PROG

BOOST

M T W T F S Su

AUTO

ALL DAY

24 HRS

OFF

6:35

RUN

CLOCK

HW PROG

CH PROG

ADVANCE

HW CH

Press the SET and CH buttons together

then release the buttons and the programmer

will return to preset factory settings.

MON-FRI

SAT/SUN

1st ON 1st OFF 2nd ON 2nd OFF 3rd ON 3rd OFF