Danfoss FP735Si User manual

FP735Si
Electronic 3-Channel Full Programmer for
Heating and Hot Water with Service Interval Timer
Danfoss Heating
MAKING MODERN LIVING POSSIBLE
Installation Guide

FP735SI
2
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For a large print version of these instructions
please call Marketing on 0845 121 7400.
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other
printed material. 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.
This product complies with the following EC Directives:
Electro-Magnetic Compatibility Directive.
(EMC) (2004/108/EC)
Low voltage Directive.
(LVD) (2006/95/EC)
®
Certification Mark

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Index
1.0 Installation Guide................................................................................4
2.0 System Overview .................................................................................4
3.0 Installation..............................................................................................5
3.1 Removing the wallplate.............................................................5
3.2 Installation considerations........................................................5
3.3 Wiring ...............................................................................................5
3.3 Mounting the unit........................................................................6
3.4 Unit startup.....................................................................................6
4.0 Programming Options ......................................................................6
4.1 Normal programming.................................................................6
4.2 Advanced programming ...........................................................7
5.0 Pre-programmed Parameters........................................................8
5.1 Advanced programming ...........................................................8
5.2 Normal programming.................................................................8
6.0 Display Information......................................................................... 10
7.0 Advanced Programming ............................................................... 11
8.0 Service Interval Timer..................................................................... 14
9.0 Copy Functions .................................................................................. 14
10.0 The Information Key........................................................................ 16
11.0 How to Reset The Unit .................................................................... 16
11.1 Reset............................................................................................... 16
11.2 Full reset........................................................................................ 17
12.0 System Wiring Example ................................................................. 18
Installation Instructions
FP735Si
Electronic 3-Channel Full Programmer for
Heating and Hot Water with Service Interval Timer

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Timer Features FP735Si
Power supply 230V ±15%, 50Hz
Memory backup Retained for the life of the product
Factory set calendar clock Automatic summer/winter time change
Switching action of output relay 3 x SPDT, Type 1B
Switch rating of relay contact 3(1) A, 230 VAC
Rated Impulse Voltage 2.5 kV
Dimensions (mm) 140 wide x 91 high x 29 deep
Ball Pressure Test 75°C
Design Standard EN 60730-2-7
Control Pollution Situation Degree 2
Time accuracy ± 1 minute per month
IP rating IP30
Software Classication A
2.0 System Overview
Please Note:
This product should only be installed by a qualied electrician or
competent heating installer and should be in accordance with the
current edition of the IEEE wiring regulations.
1.0 Installation Guide

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3.1 First remove the wallplate from the back of the unit.
3.2 From the top left hand corner of the wallplate, there must be
clearances of at least 21mm to the right, 21mm to the left, 36mm
above and 106mm below in order to mount the plug-in module.
3.3 Wiring
Note: A typical system wiring example is shown on page 18
3.0 Installation
3 on LN 2 on 2 off 1 on 1 off

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FP735Si is delivered with a set of parameters that have been pre-
programmed to cover the most typical type of installations. See
(5.0). If a dierent parameter setup is wanted the unit provides two
programming options:
4.0 Programming Options
4.1 Normal programming
Normal Programming is meant for setting the timing prole that
controls the ON and OFF periods for the room heating and for the hot
water. A daily prole may be programmed and a prole can control
the entire week where the weekend may be handled separately. Also a
timing prole for a holiday can be entered.
As part of the normal daily operations, a simple one-button press
(+HRS) can extend a running ON period for room heating and/or hot
water by one hour. This can be repeated 3 times giving up to 3 hours
extension.
3.4 Mount the unit on the wallplate
3.5 With the unit powered up, it is recommended to press and
release the RESET button to start up the FP735Si unit.
Note: Always switch
the mains o rst
and never t/remove
the timer to/from a
live wallplate.

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4.2 Advanced Programming
Advanced Programming is meant for changing certain parameters
that are usually only set once. Advanced Programming can typically
be made by the installer as part of the system installation and setup.
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By pressing ADV (advance), the user can jump to the next event in the
daily timing prole. If for instance, the user wants to bring on the room
heating immediately whereas the prole has been programmed to
bring it on in two hours, the user can simply press ADV and the heat
will be turned on.
See the User Guide for normal programming instructions.

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5.0 Pre-programmed Parameters
FP735Si is delivered with a set of pre-programmed parameters.
5.1 Advanced Programming
The following pre-programmed parameters can be changed in the
Advanced Programming:
Function/parameter Pre-programming
A+B days (disabled, enabled) Disabled
Copy functions
(standard or advanced copy function)
Standard
Summer/winter shift
(automatic or manual)
Automatic
Backlight (always o, always on,
15s after last key press)
15s after last key press
4 events or 6 events per day 6 events
Operating mode
(7 days, 24 hours, 5 + 2 week days)
7 days
Keyboard lock (locked, not locked) Not locked
Service interval (disabled, enabled) Disabled
Note: for the UK market, the FP735Si comes with a default 12 hours clock (AM/
PM) setup.
5.2 Normal Programming
The following pre-programmed parameters can be changed in the
Normal Programming. See User Guide.

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Event Time Room heating/water heating status
1 06:30 ON
2 08:30 OFF
3 11:30 ON
4 13:30 OFF
5 16:30 ON
6 22:30 OFF
Weekends (Saturday-Sunday):
Event Time Room heating/water heating status
1 07:30 ON
2 09:30 OFF
3 11:30 ON
4 13:30 OFF
5 16:30 ON
6 22:30 OFF
Pre-programmed ON and OFF periods for 4 events per day
Weekdays (Monday-Friday):
Event Time Room heating/water heating status
1 06:30 ON
2 08:30 OFF
3 16:30 ON
4 22:30 OFF
Weekends (Saturday-Sunday):
Event Time Room heating/water heating status
1 07:30 ON
2 09:30 OFF
3 16:30 ON
4 22:30 OFF
Pre-programmed ON and OFF periods for 6 events per day:
Weekdays (Monday-Friday):

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6.0 Display Information
Channel Status
(Event number when programming)
Channel Number
TIME
Days of Week (Numbers or Text)
KEY TO SYMBOLS
Flame: shows when heating is on
Hourglass: shows during programming delays
Padlock: indicates keyboard is locked
Suitcase: indicates Holiday Mode is set
Clock: Timed Modes
Hand: Manual Modes
Alarm: Indicates alarm is active. Also used for service
due
3 on and 3 o events per day
2 on and 2 o events per day
1 on and 1 o event per day. All Day Mode
Timer (OFF) Mode
+ HRS: Extends function by 1, 2 or 3 hours
Timer (ON) Mode

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To access the Advanced Programming follow the steps below:
a) Press and hold PROG and Vfor 5 seconds.
The display will change to look like this.
b) Press the +and - keys to scroll backwards and forwards between
parameters.
Press the Vand Λkeys to change the parameter setting.
The ashing digits in the center of the display indicate the
number of the selected option. The large characters in the top or
bottom of the display indicate the option value selected.
c) Press and hold PROG until the display
returns to RUN mode.
Parameter setting
Parameter number
7.0 Advanced Programming

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In the Advanced Programming mode, the following parameters can
be changed:
Parameter1 – Enable/Disable A+B Days
This allows the unit to operate in A+B days.
A and B days can be grouped arbitrarily: 5+2, 4+3, etc.
The days do not have to run in sequence.
Press +until parameter 1 is displayed.
Press Vor Λto select the required setting.
Note: A+B setting is only possible if operating mode
5+2 has been set in Advanced Programming.
WARNING: Changing this parameter will reset event
times to default values.
0 = disabled (default)
1 = enabled
Parameter 2 – Copy functions
This parameter sets the unit to operate with the
Standard Copy function or the Advanced Copy
function.
Press + until parameter 2 is displayed.
Press V or Λto select the required setting.
Note: Advanced Copy setting is only possible if
operating mode 7 day has been set in Advanced
Programming.
0 = Standard Copy (default)
1 = Advanced Copy
Parameter 3 – Summer/winter
The Summer/winter parameter makes it possible
to let the unit change between summer and winter
period automatically or manually. The parameter can
also disable the change between summer and winter.
Press +until parameter 3 is displayed.
Press Vor Λ to select the required setting.
0 = disable summer/winter change
1 = enable manual summer/winter change
2 = enable automatic summer/winter change (default)

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Parameter 6 – Operating Mode
(7 Day, 5+2 Day or 24 Hour)
This parameter sets the unit to operate using either 7
day, 5+2 day or 24 hour mode.
Press + until Option 6 is displayed.
Press Vor Λto select the required setting.
WARNING: Changing this parameter will reset event
times to default values.
24 = 24 hour
5-2 = 5+2 Day (or A+B if set in parameter 1)
7 = 7 day (default)
Parameter 4 – Backlight
The backlight parameter allows the backlight to be
always on, always o, or on for 15 seconds after the
last key press.
Press +until parameter 4 is displayed.
Press V or Λ to select the required setting.
0 = backlight always o
1 = backlight on for 15 seconds after the last key press (default)
2 = backlight always on
Parameter 5 – Number of events per day
This parameter sets the unit to operate with 4 or
6 events per day. An event being an ON or an OFF
period of room heating and/or hot water heating.
Press + until parameter 5 is displayed.
Press Vor Λto select the required setting.
WARNING: Changing this parameter will reset event
times to default values.
2 = 2 ON/OFF periods per day
3 = 3 ON/OFF periods per day (default)

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Parameter 7 – Keyboard Lock
This parameter sets the unit to operate with
an enabled (functioning) or a disabled (locked)
keyboard.
Press +until parameter 7 is displayed
Press Vor Λ to select the required setting.
0 = the keyboard is enabled (default)
1 = the keyboard is disabled (locked)
8.0 Service Interval Timer
FP735Si provides 3 copy functions: Standard Copy, Advanced
Copy and Channel Copy. Standard Copy is the default setting.
If the Advanced Copy function is wanted, it must be changed in
Advanced Programming mode (page 13). Channel Copy is always
available.
Standard Copy
Pressing COPY/i will copy the previous day’s events into the
displayed day. The unit will then display the 1st event for the new
day.
The Standard Copy function is only present if the unit is set to run in
7 day mode, or 5+2 day mode.
9.0 Copy Functions
The FP735Si is equipped with an installer setback service interval
timer. If this feature is required please contact our technical
department. Setting instructions for this gas safety feature are only
available to bona de heating installers.

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To perform a standard copy operation:
a) Press CH to select the channel.
b) Press PROG to go to event programming.
c) Press DAY/HOL to select the day to copy to.
d) Press COPY/i to copy the previous day’s events to the displayed
day.
Advanced Copy
The Advanced Copy function is available in 7 day mode only. This
allows any day to be copied to any other day, or days.
To use the Advanced Copy function, go into the event programming
using the PROG button, then:
1) Press DAY/HOL to select the day to be copied from.
2) Press COPY/i to copy from the selected day.
When selected, the day will begin to ash.
3) Press DAY/HOL to select the day to be copied to.
4) Press COPY/i to copy to the selected day.
5) Repeat steps 3 and 4 to select and copy other days.
6) To stop copying, use the DAY/HOL button to go back to the
ashing day and press the COPY/i button. The previously
ashing day will stop ashing to indicate it has been de-selected.
NOTE: When a day has been copied to, it will remain visible and not
ashing when the DAY/HOL button is used to select other days.
Channel Copy
Channel Copy is used to copy events from one channel to another
channel.
To perform a Channel Copy operation:
a) Press CH to select the channel to copy to.
b) Press COPY/i to copy from the previous channel.

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10.0 The Information Key
When running in normal operation, the Information key COPY/i will
provide the following information:
1st COPY/i key press: the model number is displayed.
2nd COPY/i key press: the software version is displayed.
3rd COPY/i key press: the next event time is displayed.
4th COPY/i key press: the Service Due end date is displayed (if set).
In holiday mode, the information key will provide the holiday end
date only.
Note: the rst COPY/i key press will only turn on the backlight if no
keys have been pressed for 2 minutes.
11.0 How to Reset The Unit
FP735Si has three levels of reset:
Reset
Full Reset
11.1 Reset
Reset restores operation in the unlikely event that the unit has
become unresponsive.
Press and release the RESET button.

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This does not reset any programmes or the time or date, but will
cancel any manual overrides that have been selected.
11.2 Full Reset
1) Go to Advanced Programming: press and hold PROG and V for 5
seconds.
2) Press and hold PROG and press/release R/S.
At a Full Reset:
• Event times are reset to their default values (section 5.2).
• Next event overrides are cancelled.
• +HRS overrides are cancelled.
• Pre-programmed Parameters (see 5.1) are reset to default values.
• Time and date are not changed.

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3on 2on 2o1on 1oL N
Links tobe made by installer
10 16 9 L N
Permanent links
Wiring Box - WC4B
1234567891011121314 15 16 L N
32
32 124
L3N
COM CALL N
RET B
RMT230
RET230
4N67
BrownBlue Orange Grey
Out In
HP22 2Port Valve (Heating Zone 1)
Aux. Sw.
Motor
LN
LN12
Perm LNSw. L
Boiler *
HW Zone 1
Zone 2
3.3 For wiring connections please refer to the diagram below: 12.0 System Wiring Example

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16 1
32 124
L3N
COM CALL N
Room Thermostat - Zone 2
RET B
RMT230
RET230
5N67
BrownBlue Orange Grey
Out In
HP22 2Port Valve (Heating Zone 2)
8N67
BrownBlue Orange Grey
Out In
HP22 2Port Valve (Hot Water)
Aux. Sw. Aux. Sw.
Motor
LN
Motor
LN
Room Thermostat - Zone 1
13N
LN
Pump * ATC
321
14 15
The above wiring diagram refers to a 3 Zone system using 3x2 port valves to control ow to each heating zone and the hot water. For systems using 3 port valves or a combination of 2 and 3 port valves please consult your local Danfoss contact. * Refer to boiler wiring information for boilers with pump overrun

Part No. 013R9577/VIHVC102 - 05/2013
Danfoss Ltd.
Ampthill Road
Bedford MK42 9ER
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.heating.danfoss.co.uk