Horstmann Channelplus H27Xl Users Manual U

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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.

CH
US ANN
ER EL
IN PLU
ST S
RU H
CT 27
IO XL
N

FULLY PUMPED OR GRAVITY SYSTEM

Horstmann’s ChannelPlus H27XL - Two Channel Programmer Offers up
to three programmed operating periods per day, seven days a week,
with independent Boost and Advance control on Fully Pumped Systems.
Can be used as a direct replacement for Horstmann 425 Diadem, Tiara
and H527(Allowing for new programmer position).

BATTERY
The programmer is fitted with a non-rechargeable, long life battery, which will maintain the
programmed time settings for a minimum of ten months with the supply disconnected.
THIS SHOULD BE SUFFICIENT TO COVER POWER INTERRUPTIONS DURING THE LIFE OF THE UNIT.
During power interruptions the display will be blank, after 3 days the current time of day will be lost.
If the programmer is not to be used for a long period of time, the switch on the rear of the unit
should be returned to the BATTERY OFF position. These are both to prolong the battery life.

The following are some of the easy to operate features:Flexible 7 Day Control
1 or 2 Hour Boost on each channel
Independent timing on Hot Water and Heating
Advance control gives instant On/Off override
Up to 3 On/Off periods per channel in each 24 Hr operation.
Programme options: Auto / All day / On constantly / Off

SERVICE AND REPAIR
This programmer is NOT user serviceable. Please do not dismantle the unit.
In the unlikely event of a fault developing please refer to the RESETTING THE PROGRAMMER section of
this user guide located on page 2. If this fails to resolve the problem please contact a local heating
engineer or a qualified electrician.

QUESTIONS AND ANSWERS

3

The display only reads bAt

Turn the battery on.The switch on the rear of the unit must be in either the Fully
Pumped or Gravity position.

The unit display has become frozen

This could be due to local electrical interference
Using the RESET procedure may rectify the fault.

The indicator neon fails to illuminate on
Hot Water or Central Heating channel

Using the RESET procedure may rectify the fault. If the problem persists the programmer
will need replacing.

1

2

5 4
7

6

8
9

The indicator neon will illuminate but
the pump and/or boiler fails to
operate

This may indicate a problem elsewhere in your system;
E.g. A zone valve, etc. please contact a registered installer for advice.

There is no display on the
programmer

Try the RESET procedure on page 2, if this fails to rectify the problem please have the
mains supply checked

13

How do I know if the programmer is
still under warranty

The ChannelPlus XL range comes with a 5 year guarantee from the date of manufacture.
This date is located on the rear of the unit, indicated by a month over a year

15

How is the programmer removed from
the wall

WARNING: The ChannelPlus programmer must only be removed from it’s backplate by
either a qualified electrician or heating engineer; The programmer plugs in to a 9 pin
backplate located on the rear of the unit and is secured using 2 screws located on the
top surface of the unit. Undo these screws and pull forward and down in an arc motion

10

11

12
14

Email: sales@horstmann.co.uk
Website: www.horstmann.co.uk

Page 4

Horstmann Controls Limited
Bristol
BS4 1UP

LEAFLET No P32621
ISSUE 3

HEATING

WATER

CLOCK

17

HOLIDAY

Internal Slide Switch located under front cover
PROG.RUN

When setting the programme times, the This indicates that you have reached an existing set time period, you will be unable to
setting ‘bounces’ by 10 minute periods set a new ON/OFF time unless there is an alteration to the existing timed period

LCD DISPLAY FEATURES
1 Current TIME OF DAY
2 Day of Week Indicator
3 Switch time SETTING indicator
4 ADVANCE symbol
5 BOOST symbol
6 Current Hot water programme
7 Current Central heating programme
8 Next Central heating switch time
9 Next Hot water switch time

16
16 SET slider switch
17 SET Positions

LED INDICATOR
10 Central heating ON indicator
11 Hot water ON indicator
EASY TO USE PROGRAMME AND FEATURE BUTTONS
12 Central heating ADVANCE(ENTER) button
13 Hot water ADVANCE (PLUS) button
14 Central heating BOOST(COPY) button
15 Hot water BOOST (MINUS)button
Both the Central heating and Hot water SELECT
buttons are located under the front cover Page 1

RESETTING THE PROGRAMMER

SPECIAL FEATURES

Lower the front flap of the unit. On the Heating channel press the
ADVANCE and SELECT buttons together then release the buttons and
the programmer will return to the preset factory settings.

RESET

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.
ADVANCE
BOOST

The SET slide switch must be in the PROG.RUN position for the following instructions.
The following actions work independently on either Hot Water or Central Heating.
Press SELECT once.
Programme goes from
AUTO to ALL DAY

Press SELECT again.
Programme goes from
ALL DAY to ON

Press SELECT again.
Programme goes from
ON 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

SELECT

FRONT COVER
The normal working position for the SET switch is in the PROG.RUN position. In order to remind the user
of this, the flap is unable to be closed with the switch in any other position.
The simple instructions below are designed to help with the programming of the unit. All the following
instructions require the front flap to be lowered. Please replace the flap when normal operation is
required.

SETTING DAY AND TIME OF DAY
Move the SET
switch to the CLOCK
position.

Use PLUS and
MINUS buttons to
adjust day
MON

Use PLUS and
MINUS buttons to
adjust time

Press
ENTER
TUE

12:OOPM

10:00AM

SUN
ALL DAY
ON UNTIL
8:30PM

SUN

AUTO
ON UNTIL
10:30AM

10:00AM

SUN

AUTO
ON UNTIL
10:30AM

ON

OFF

BOOST FUNCTION Return SET switch to
PROG.RUN position

Press BOOST button
once for 1 hour of
Hot Water or
Central Heating

10:00AM
AUTO
ON UNTIL
10:30AM

SUN

10:00AM
AUTO
ON UNTIL
10:30AM

AUTO
ON UNTIL
10:30AM

1 or 2 hour temporary override

Press BOOST button
twice for 2 hours of
Hot Water or
Central Heating

At any time during a BOOST
period press BOOST again to
return to normal programming

SUN

10:00AM

AUTO
ON UNTIL
11:30AM

BOOST 1 2

AUTO
ON UNTIL
11:30AM

1:45PM

On the ChannelPlus display - Boost 1 is Hot water extension 1 or 2 hour and Boost 2 is Heating extension 1 or 2 hours
SET
SETTING

ADVANCE FUNCTION - Brings forward next on or off operation
DEFAULT TIME SETTINGS
The default factory settings
are shown, however if you
wish to change these
proceed as instructed below.

1st ON 1st OFF 2nd ON

2nd OFF

3rd ON

3rd OFF

MON-FRI

6:30 AM 8:30 AM

12:00 PM

12:00 PM

4:30 PM

10:30 PM

SAT/SUN

7:30 AM 10:30 AM

12:00 PM

12:00 PM

5:00 PM

11:00 PM

SETTING THE ON AND OFF TIMES
Move SET switch to
Central Heating
or Hot Water
position

Press
ENTER

Use PLUS
and MINUS
buttons to
adjust day

Repeat this
process for 2nd
and 3rd settings

Use PLUS and
MINUS
buttons to adjust
the 1st ON time.

Press
ENTER

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
ENTER

Programme the
remaining days.

SUN
SETTING 1ST
ON

6:30AM

Page 2

OFF

8:30AM

Should you encounter any problems, please refer to the
Question and Answer section located on page 4.

Press ADVANCE button once
to move to the next
ON/OFF time

HOLIDAY FUNCTION
Move SET switch to the
HOLIDAY position

Use the PLUS
and MINUS
buttons to adjust
the 1st OFF time.

To cancel the advance press the ADVANCE
button again. This will return the unit to
its normal programme

- Allows system to be programmed for up to 32 days

Use the PLUS button to enter the
required number of nights
(MAX OF 32 NIGHTS)

Return SET switch to the
PROG.RUN position

08
SETTING

Whilst the HOLIDAY FUNCTION is in operation the system will remain OFF, the display will show the
number of nights remaining. The HOLIDAY setting is an instant function and cannot be set in advance.
The HOLIDAY FUNCTION can be cancelled at any time by pressing any of the SELECT buttons. Normal
programme functions will resume at the first ON period after the pre-set number of nights has expired.

Return SET
switch to PROG.RUN
position.

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
Your programmer will prevent you from accidentally overlapping ON and OFF times.
Example: If the 2nd ON time is set at 12:00pm and then you try and set the 1st OFF at 12:30 pm the
OFF setting will ‘bounce’ by a 10 minute period until the 2nd ON time has been adjusted.
Page 3



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