Creda Credanet II User manual

Page 1
USER’S GUIDE
Controller
Heating System
Credanet II
This Handbook is for theUser
Please leave thisguide in thevicinity of the
Controller (for future reference).
Note to Installer : For the benefit of the customer please complete
•The RoomAllocation Chart on Page 6 and
•Your contact details on Page 14.

Page 2
Credanet II – A User’s Guide
Contents
1. Welcome to Credanet II ……………………………………... Page 3
a) Parts of the Credanet IIcontroller
2. Getting Started ……………………………………………….. Page 4
a) Settingthe dayand time
b) Programme Run (Pre-set programme)
3. Planning your heating ……………………………………….. Page 5
a) Room Allocation Chart
b) Your HeatingPlan
4. Changing the settings at the controller ………………………Page 9
a) ProgrammingZone 1
b) ProgrammingZone 2 and 3
5. Useful features …………………………………………………Page 11
a) What to do if Ifeel cold
•Boost the whole Zone, atthe Controller
•Boost the room only,at the heater
b) What to do if Igo away
c) Switchingthe heatingoff
d) Switchingoff an individual heater
e) Checkingthe settings without changingthem
f) Returningthe Controller to its original settings
6. Contact details …………………………………………………Page 14
a) Sales Hotline
b) Creda Spares
c) Creda Technical Services
d) Brochure Hotline
e) Your electricitysupplier
f) The Credanet II Installer
7. Guarantee …………………………………………………….. Page 15

Page 3
1. Welcome to Credanet II
Before programming your requirements, this section will help you switch on your new Credanet II
system and begin to heat your home
•Your installer will have set your heatingsystem sothat the controller will run the heaters
connected to it according to a pre set profile of times and temperatures.
•A picture of a controller in its normal (Program Run) condition is shown below.
a) Parts of the Credanet IIcontroller
•To get your heatingsystem workingwithout alteringanyof the time and temperature profiles the
Set switch is left in the “PROG. RUN” position.
•If the Clock needs adjustingsee Page 4. (“Setting the day and time”)
IMPORTANT
•The power supplyswitches next to the heaters MUST be left ON at all times.
All the Credanet IIheaters contain an electronic control circuit. The heating will not work properlyif
anyof the switches next to the heaters are switched off.
If no heating is required in a particular zone then the heaters can be switched of using the controller.
See Page 12 “Switching the heating off ”.

Page 4
2. Getting Started
Your heating system has already been programmed with the heating requirements of a typical home.
Once the day and time are correct, your system will automatically start to operate.
NOTE : Please refer to Page 7 (Your Heating Plan) if the heatingrequirements need to be changed.
a) Setting the day and time (Refer to “Parts of the Credanet II controller” on Page 3)
Check in the displaythat the dayand time are correctlyset.
If not, open the pull down flap on the front of your Credanet IIcontroller.
•Slide the SET switch to CLOCK
•Thedaywill flash
•Use the left hand “+” and“ -” buttons
to change the day
(e.g. Changefrom MON to WED)
•Press the left hand SELECT button
when the correct dayis shown.
•The time will flash
•Now use the left hand “+” and “ - ”
buttons to change the time
(e.g. Changefrom 12:01 to 12:15)

Page 5
b) Programme Run (Pre-set programme)
•When the Dayand Time are correct : Slide the SET switch to PROG. RUN
Your Credanet IIsystem is now readyto operate ~simplyclose the flap andyour heatingwill follow the
pre-set programme.
NOTE
If the word OFF appearsin the displayabove anyof the “+” or “ -” buttons, you will need to open the
flap and press the SELECT button below them, before your system will operate. The word OFF will be
replaced bya number.
3. Planning your heating
Your installer will have programmed your Credanet II Controller so that the heating can be set to
different temperatures in different parts of the house. This section explains how to alter these to suit
your individual needs.
a) Room Allocation Chart
•The heatingin your propertyis sorted into zones.
•Each zone, and all the heaters in that zone, can be set to its own temperature and timings.
Example showing Zones within a property :
This Controller has been programmed
with three zones. (Zone 1 downstairs
and Zones 2 and 3 upstairs).
Azone is agroup of one or more rooms
with one or more heaters.
ACredanet II installation can be
programmed with one,two or three
zones. ZONE 1
ZONE 2 ZONE 3
Example of a completed RoomAllocation Chart:
An example of a completed Chart is shown below.
In this completed RoomAllocation
Chart the propertyhas aCredanet II
controller programmed as follows :
Zone 1
LivingRoom with 2 storage heaters
DiningRoom with 1 storage heater
Zone 2
Kitchen with 1 storage heater
Zone 3
Bedroom 1, 2and 3, each with a
Panel radiator.
Note
This property also has a“stand
alone” heater fitted inthe H
allway.
This is not part of the Credanet II
heating system but is detailed in
this table for clarity.

Page 6
NOTE to Installer : Please complete TheRoom Allocation Chart below
Rooms in
ZONE 1
Rooms in
ZONE 2
Rooms in
ZONE 3
Notes
Living Room
Dining Room
Kitchen
Study
Hallway
Downstairs
toilet
Landing
Bedroom1
Bedroom2
Bedroom3
Bedroom4
Bedroom5
Bathroom
En suite
Other
Other
Other
Other

Page 7
b) Your Heating Plan
Your heating system has already been programmed with the heating requirements of a typical home.
Once the day and time are correct (see Page 4), your system will automatically start to operate.
NOTE
•In some situations the HeatingPlan programmed into the Controller will have been “Locked” bythe
Installer so that it cannot be changed. (This is usually on instruction by the property specifier).
If the pre-set heatingscheme is not to your requirements then it can be changed to suit your individual
plan.
Before you plan your heating, take a look at the pre-set programme below,alreadyprogrammed into
the controller. This is the programme that is alreadyset foryour system, and which you have started in
“Section 2 – Getting started”.
What is “Comfort temperature”?
The comfort Temperature is how hot or cold you
want the room to bewhen you are likelyto be
usingit. You can setthis to anylevel you
choose, and it is measured in °C. (equivalents in
°F shown below)
°C
14°
15° 16° 17°
18° 19° 20°
21° 22°
°F
57°
59° 61° 63°
64° 66° 68°
70° 72°
What is “Fallback temperature”?
When you aren’t usingaroom,you can
programme Credanet II to let the temperature
“fall back”to alower level, and the level you
choose for this is called the fallback temperature.
Ifthe temperature falls below this, Credanet II
bringsit back up to the fallback level and keeps
it there ~preventingtheroom from becoming
too cold.
Use the table on the nextpage to plan out how youwant your heatingto runon each dayof the week.
This will help you when you come to programme your planinto the controller, and will make a useful
record ofyour settings.
NOTES
•For each Zone and Day, the controller will not allow overlappingTime slots to be Set.
•Tryto avoid settingthe Fallback temperature more than 4°C lower than the Comfort temperature.
(A low Fallback temperature will cause the Credanet II system to use more peak rate and less cheap
rate electricity. The running costs are likely to be higher).

Page 8
Your Heating Plan Table:

Page 9
4. Changing the settings atthe controller
Once you have planned your heating requirements, you need to put them into the controller.
This section explains how to programme the controller.
NOTE
•In some situations the HeatingPlan programmed into the Controller will have been “Locked” bythe
Installer so that it cannot be changed. (This is usually on instruction by the property specifier).
a) Programming Zone 1
Usingthe information on the completed heatingplan (previous page)
Open the pull down flap on the front of your Credanet IIcontroller.
•Slide the SET switch to ZONE 1
•All the days of the weekwill flash
•If you require each time slot in Zone 1 to be
the same for everydayof the week:
vLeave all the days flashingand then
Press the left hand SELECT button
•To change the time slots for an individual
day:
vSelectthe dayto be changed usingthe
left hand +and –buttons and then
Press the left hand SELECT button
•Pressingthe left hand SELECT button will
show the settings for the 1st time slot.
vUse the left hand +and -buttons tochange
the Start (On) time
vUse the middle +and -buttons tochange
the Comfort temperature
vUse the right hand +and -buttons to
change the End (Off) time
•When the settings for the1st time slot are
correct Press the middle SELECT button
•Pressingthe middle SELECT button will show
the settingsfor the 2nd time slot.
vUse the +and -buttons to alter the Start
time, Comfort temperature and End time
•When the 2nd time slot is correct
•Press the middle SELECTbutton again to show
the settingsfor the 3rd time slot.
vAs before, use the + and - buttons to make
the required changes
•Press the middle SELECTbutton toshow the
Fallbacktemperature and use the middle
buttons to change to the required value.

Page 10
NOTES
•It maybe quicker to set the Zone requirements for all the days of the week and then to change an
individual dayafterwards.
•To make changes to other days Press the left handSELECT button so that the Dayflashes and use
the left hand +and –buttons to choose another day.
Summary
•To make changes in Zone 1 slide the SET switch to ZONE 1
•Use the left hand SELECT button to change between Days and Time slots
•When Days is flashing, use the left hand + and – buttons to change between Days.
•When Time slots is displayed, use the middle SELECT button to change between Time
slots 1 and 2 and 3 and the fallback temperature
•For each selection, make changes usingthe + and – buttons.
b) Programming Zones 2 and 3
Zones 2 and 3 are programmed in the same wayas Zone 1. Move the slider to the required Zone
and follow the instructions given above forZone 1.
Your programme is now complete. Slide the SET switch to PROG RUN and close the flap.
The Credanet IIheatingsystem will now follow your individual HeatingPlan.