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5

Concord CXSD - 

User's Guide

7 USING THE BOILER FEATURES AND CONTROLS - continued

ON / STANDBY [1/0] BUTTON

Turns the boiler ON and to STANDBY.

WARNING

.

STANDBY does 

NOT

 electrically isolate the boiler.

 When this switch is in the STANDBY position the display will
show :-

To switch the boiler ON press the On/Standby [1/0] button.
The display will show :-

This display will be retained for 5 seconds before the
information screens are displayed.

INFORMATION SCREENS

On initial start up the boiler will indicate the hardware and
software code, the boiler type and indicate if the boiler is ON
or at STANDBY.

If the boiler is at STANDBY the rotating information screens
will not be in evidence.

If the optional outside temperature kit, enabling weather
compensation, has been fitted the display will indicate the
compensated set point temperature.
An example of the display is as follows :-

MONDAY

14 : 10 19 / 09 / 94

ON HIGH 50

°

°

°

°

°

C

HOURS RUN 250

TEMP SET 82

°

°

°

°

°

 C

PROGRAMMER ON

"ENTER" FOR MENU

MENU

To access the menu screen ensure that the information
screens are being displayed.
Any key, except the [1/0] button, may now be pressed to
access this feature but, as indicated on the information
screen, the [ENTER] button is the preferred means.

On entering this option the first screen displayed will be:-

The [DOWN] button can be pressed consecutively to access
the features required, which are as follows:-

If the weather compensation option is fitted then a further
screen will be displayed after commissioning.

The [UP] button will access the above options in reverse.
When the option required is displayed and the [ENTER]
button pressed another set of menus will be available as
discussed on the following pages.

PROGRAMMER TIMER

The programmer has 3 time zones per day for each day of
the week. Each day can be programmed for the
requirements of that day, giving 7 programmed days, or,
using the [Copy] facility, any number of days can be the
same. If a particular time zone is not required then the ON
and OFF periods should be programmed for the same
time.

Each button has an auto repeat function.

The programmer is based on a 24 hour clock and the
boiler comes with a default programme set for :-

All Day

The boiler will respond to this programme unless an
alternative is programmed in.

Using the [UP] or [DOWN] button select the  "Programmer
Timer" from the menu and press [ENTER].  The following
menus will be available using the [UP] or [DOWN] buttons:-

or

or

or

To select any of the above use the [UP] or [DOWN] button
until the option required is displayed and press [ENTER].

Summary of Contents for Concord CXSD 40

Page 1: ...U S E R S I D E A L I D E A L I D E A L I D E A L I D E A L T H E T H E T H E T H E T H E G U I D E Concord CXSD 40 120 User s guide to commercial central heating boilers...

Page 2: ...OL SYSTEM In addition to the operational characteristics described above the control system incorporates the following features accessible to the user or service engineer ADJUSTABLE BOILER TEMPERATURE...

Page 3: ...rn the boiler ON If necessary adjust the temperature set point etc as required AFTER LONG PERIODS Remove the casing lower front panel and turn the gas cock ON Refit the casing front panel and follow t...

Page 4: ...4 Concord CXSD User s Guide 6 USING THE BOILER FEATURES AND CONTROLS The diagram below shows the sequence of steps to be taken when reading the instructions on the following pages...

Page 5: ...on screen the ENTER button is the preferred means On entering this option the first screen displayed will be The DOWN button can be pressed consecutively to access the features required which are as f...

Page 6: ...0 85 o C Using the UP or Down button select the TEMP SET from the menu and press ENTER The following will be displayed with the temperature flashing 8 USING THE BOILER FEATURES AND CONTROLS continued...

Page 7: ...off The information screen will display The boiler will remain OFF for a minimum of 3 minutes or until the boiler flow temperature has dropped by 3 o C whichever is the greater time If the boiler load...

Page 8: ...137 Registered Office National Avenue Kingston upon Hull HU5 4JN A subsidiary of Caradon plc Caradon Plumbing Limited pursues a policy of continuing improvement in the design and performance of its p...

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