Danfoss FP975 Data sheet
Datasheet
FP975
Electronic 7-Day Programmer
Application
The FP975 7-day full programmer o ers all the control flexibility and user features of its counterpart, FP715, in the regular Mk18 range, but with two important di erences:
1)This unit is intended specifically to replace, or upgrade systems with, Danfoss Randall Mk.9 time controls. They have British Gas Standard wallplates which are used by many other models, including the Danfoss Randall SET range, the Horstmann 425 Diadem and Tiara, and their 525 and 527 models.
2)This model has voltage-free output contacts, making it applicable to systems with low voltage control circuits, e.g. combination boilers or warm air.
The unit is supplied with a SET wallplate but, simply by re-positioning a small switch on the back, interchangeability is achieved with Mk.9 controls.
Replace models |
With |
922 & 972 |
FP975 |
The FP975 is supplied as a full 7-day control, but the installer can easily and quickly convert it to a weekday/weekend or 24 hour unit if preferred.
•British Gas Standard wallplate provides interchangeability with other popular time controls
•Total control fl exibility
•Easy Programming
•Stylish, compact design
•Easy change toWeekday/Weekend control
•Easy GMT/BST time change
•Day programme copy facility
•AM/PM or 24 hour clock display
•Up to 3 Ons/O s each day
•Built-in, ready-to-use programmes
•Battery back-up
Systems
The FP975 will plug on to the wallplates of both Danfoss Randall Mk.9 and SET time controls.
When used on an existing correctly wired MK.9 wallplate, no wiring changes need to be made but the small switch on the back of the new unit should be re-positioned as shown overleaf.
For SET replacement, no such adjustment is necessary.
FP975 Heatshare System (mid-position valve)
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DHW DHW |
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HTG |
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ON |
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OFF |
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ON |
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Cylinder |
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‘stat |
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N |
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‘stat |
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N |
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Boiler |
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Pump |
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3 Port |
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N |
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Mid Position |
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Valve |
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Earth not shown. |
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Ensure earth continuity |
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N |
throughout. |
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Mains |
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DHW |
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HTG |
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922 or 972 |
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COM |
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COM |
ON |
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SET5 |
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ON |
COM |
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OFF |
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COM |
OFF |
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E |
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N |
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FP975 Heatplan System (2x2 port valves)
N |
DHW |
DHW |
HTG HTG |
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ON |
COM |
ON COM |
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Cylinder |
Room |
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Pump |
‘stat |
‘stat |
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N |
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Boiler |
Spring return |
Spring return |
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valve in DHW |
valve in HTG |
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Mains |
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DHW |
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HTG |
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922 or 972 |
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OFF |
COM |
ON |
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COM |
ON |
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SET5 |
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ON |
COM |
OFF |
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COM |
OFF |
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N |
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1 |
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Links |
Links |
Part No. 208 Issue 07 10/09 |
1 |
Datasheet |
FP975 Electronic 7-day Programmer |
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Specifications |
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Features |
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FP975 Full Programmer |
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7-day, 5-day/2-day or 24 hour |
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Water/Heating linkable for basic systems |
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Output Channels |
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Independent HW and CH |
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On |
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O |
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Programmes Selectable |
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Auto |
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Allday |
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(per channel) |
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Weekdays |
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Saturday & Sunday |
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6:30am |
ON |
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7:00am |
ON |
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Factory pre-set ON/O times |
8:30am |
OFF |
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10:00am |
OFF |
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12:00pm |
ON |
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12:00pm |
ON |
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All changeable |
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12:00pm |
OFF |
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12:00pm |
OFF |
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5:00pm |
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5:00pm |
ON |
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10:30pm |
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10:30pm |
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Ons and O s per day |
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Up to 3 |
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Advance Override |
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Per channel |
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+1 Hour Override |
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Per channel |
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Voltage Rating |
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220/240 Vac, 50 Hz |
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Contact Rating |
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3 (1) A |
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Switching Action |
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2 x SPDT Voltage Free |
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Maximum AmbientTemperature |
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45°C |
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Memory back-up |
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Lithium - minimum of 24 hours |
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Dimensions |
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150 wide x 99 high x 42 deep |
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Wallplate and Conversion
The FP975 programmer is supplied exfactory as a 7-day unit.
Simply by re-positioning small switches as shown, it can become a weekday/ weekend or 24 hour control. The same switch determines whether or not the FP975 is HW/CH linked for use with basic gravity heating systems.
Outline of unit |
Allow screwdriver access above unit |
Wall or plaster box tting
Terminal block
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43mm |
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Rear entry cable access |
Surface xed cable |
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Allow 20mm clearance below unit |
bottom entry knockouts |
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Setting Operating Mode
Four small switches on the rear of the case are used to set the operating mode.
TOP
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<![if ! IE]> <![endif]>9.MK |
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<![if ! IE]> <![endif]>PUMPED |
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<![if ! IE]> <![endif]>DAY/24 7 |
<![if ! IE]> <![endif]>HR 24 |
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<![if ! IE]> <![endif]>HR |
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LEFT |
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RIGHT |
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<![if ! IE]> <![endif]>SET |
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<![if ! IE]> <![endif]>GRAVITY |
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<![if ! IE]> <![endif]>DAY 5/2 |
<![if ! IE]> <![endif]>DAY 7 |
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Wiring |
Electronics |
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N/O |
N/C |
N/O |
N/C |
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Please note: |
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Operating mode switch at factory setting, |
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ie. for new installation or for direct replacement of SET range. |
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N |
L |
1 |
2 |
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3 |
4 |
5 |
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6 |
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Mains |
ON |
C |
OFF ON |
C |
OFF |
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DHW |
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HTG |
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Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.
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.
Danfoss Ltd.
Ampthill Road
Bedford MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Email: ukheating@danfoss.com
Website: www.heating.danfoss.co.uk
2 |
Part No. 208 Issue 07 10/09 |
VDAFB212 |
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