Creda 75773301 User manual

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ER300 75773301 1.3kW / 0.38kW 9.1kWh
ER400 75773302 1.95kW / 0.47kW 13.65kWh
ER500 75773303 2.6kW / 0.54kW 18.2kWh
87956 Issue 3 : April 2010
Installation Instructions
Storage Radiant Heaters

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AA Circuit Diagram
BCharge Control
Thermostat
COver Temperature
Cut Out
DStorageHeater
Elements
FRoom Sensing
Thermistor
GCore Sensing
Thermistor
HCharge Controller
Module
IUser Interface
Module
JPeak Supply
KRadiant Element
LLive
NNeutral
PPilot Wire
EManual Fit
Connector
L1 Live Storage In
L2 Live Storage Out
L3 Live Radiant In
L4 Live Radiant Out
S1 Signal In
S2 Signal Out
N1 Neutral In
N2 Neutral Out
MOff Peak Supply
ER300
ER400
ER500

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Wall
Curtains Shelf or Overhang
Furniture or other obstruction
110mm
150mm
min.
250mm
min.
75mm
min.
75mm
min. A
BC
Model Height Width Depth
ER300 75773301 712mm 600mm 130mm+10mm
ER400 75773302 712mm 830mm 130mm+10mm
ER500 75773303 712mm 1060mm 130mm+10mm
Dimensions (including clearances diagram) (millimetres)
ABC

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2
1
6
4
1
2
10mm
10A
10B
21
2
2 2
5

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30mm
10E10F
11A
11c 11D
12A12B
12C13

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16
14 15A
15B
18B
18
18A

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2
1
19A19B
19C
19E19F
19D
19G19H

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Electrical Connection
WARNING – THIS APPLIANCE MUST BE EARTHED
The installation of this appliance should be carried out by a competent electrician in accordance with I.E.E. Regulations for Electrical
Equipment. The radiator is fitted with two flexible cables for connection to the fixed wiring of the premises through suitable connection
boxes positioned adjacent to the radiator. Each supply circuit to the radiator must incorporate a double pole isolating switch having a
contact separation of at least 3mm. This radiator is not suitable for connection to a 30A ring circuit.
THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR FUTURE REFERENCE
NOTE ALSO THE INFORMATION GIVEN ON THE APPLIANCE
IMPORTANT SAFETY ADVICE
WARNING - This radiator is VERY HEAVY, it is essential that the radiator is FIXED SOUNDLY TO A WALL and mounted on a
FIRM, LEVEL SURFACE.
WARNING – Choose the appropriate fixings to securely attach the radiator to the wall;
Suggested Wall Fittings (see page 5 for further information)
Solid brick/block: Size 10 plastic inserts (provided). 8mm drill bit. Drill 15mm deeper than insert length.
Plasterboard: If possible locate studding and use No. 10 woodscrews directly into the wood, otherwise M5
intersets.
For other wall types seek specialist advice.
WARNING – If during any reassembly of the radiator, a part of the thermal insulation shows damage or deterioration which may
impair safety, it should be replaced with an identical part.
WARNING – This radiator must not be located below a fixed socket outlet.
WARNING - in order to avoid overheating, do not cover the radiator.
DO NOT COVER OR OBSTRUCT the surfaces of the appliance.
DO NOT POSITION under windows where curtains may contact the radiator (see minimum clearances on Page 3).
DO NOT PLACE OBJECTS in contact with the radiator.
This appliance is not intended for use by persons (including children, who should be supervised) with reduced physical, sensory
or mental capabilities, unless supervision or instruction has been given concerning use of the appliance by a person responsible
for their safety.
DuoHeat Radiators are not suitable for installation in bathrooms, shower rooms etc. or in areas of high humidity.
TO ENSURE THIS APPLIANCE IS OPERATING CORRECTLY, IT IS ESSENTIAL TO PERFORM THE CHECK PROCEDURE DETAILED
ON THE BACK PAGE OF THIS INSTRUCTION. THIS MUST BE COMPLETED BEFORE NORMAL OPERATION COMMENCES.
ATTENTION : IN ORDER TO AVOID OVER HEATING DO NOT COVER THE HEATER
Energy Retention Cells
Energy retention cells are supplied separately to the radiator in packs of two.
The reference number is 75-779999.
ER300
8 Cells (4 Packs)
ER400
12 Cells (6 Packs)
ER500
16 Cells (8 Packs)

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5. Stand the radiator on its feet and against a wall. Remove
the securing screws along the bottom edge of the front
panel. (Fig. 5)
6. Carefully swing bottom of panel slightly away from the
rest of the radiator 1, thus disconnecting the radiant element
connector from the front panel, and lift upwards to unhook
the top edge 2 . (Fig. 6).
4. Stand the radiator on its feet and remove packaging.
Remove all additional internal protective packaging. (Fig. 4)
7. Ensure the electronic components are not damaged when
removing the panel. Carefully place the panel to one side.
Check that the mains supply cables are not damaged.
If they are to be replaced only heat resistant cable must be
used (min. T85) for both the off peak cable and peak. Refer
to sections 3, 19 and 20 for fitting the off peak and radiant
element cables.
8. Position radiator against wall in intended final position,
ensuring it is on a firm base and taking note of the minimum
fixing dimensions (see page 3).
9. If the floor is carpeted it is important that the feet are po-
sitioned firmly and securely. The feet may rest on top of the
carpet, however carpet gripper should be removed around
the feet so that the radiator rests in a level position.
1. Open carton from the bottom. Remove feet, plinth and
accessories bag from the polystyrene packaging. (Fig. 1)
2. Before removing the radiator from the carton, fit
the feet to the radiator by engaging the flanges on the
top of the foot with the slots in the base of the radiator
1 . Push the foot towards the back of the radiator until it is
fully engaged 2 . (Fig. 2)
ASSEMBLY
3. The direct acting mains cable is clipped to the underside
of the radiator ensuring it is secure during transit. The
off peak mains cable will be secured with clips. Prior to
installing the radiator, unclip the direct acting mains cable
(do not remove or discard these clips).
NOTE: If the off peak mains connection is required
to be made on the right hand side of the radiator, the
pre-wired cable must be passed behind the feet and
secured using the clips on the base of the radiator. For
ease of access this should be done while the radiator
is still upside down in the carton. Similarly when the
direct acting mains cable is ready to be connected (See
Section 19), if the connection is required to be made
on the left hand side of the radiator the cable must be
routed behind the feet. DO NOT clip the direct acting
mains cable at this stage (See Section 19). The cable
clips are already fitted at the factory to allow both mains
cables to be attached, if required.
The following must be applied before fixing the radiator to
the wall:
NO SKIRTING BOARD / SKIRTING BOARD NO
TALLER THAN 100MM
10AThe radiator is to be mounted as shown in Fig.
10A, with the wall spacer bracket in its standard
orientation.
10BMark the position of the two mounting slots with the
radiator pushed tight against the wall Fig. 10B.
WALL MOUNTING
10CDrill holes into the wall toward the bottom of the
marked slots.
Use the 10mm spacers provided (4 x 10mm) between
the rear of the radiator and the wall. DO NOT use the
30mm spacers where there are no skirting boards or
they are no taller than 100mm.
10DPlace one 10mm spacer to the inside and another
10mm spacer to the outside of the location hole on
the back panel (see Fig 10Afor wall spacer bracket
orientation).
10ECarefully guide the radiator towards the drilled hole
and screw part way to the wall Fig. 10E.
INSTALLATION OF THE RADIATOR
Ensure feet are attached in the correct orientation.

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DO NOT USE 30MM SPACER ON INSIDE OF RADIATOR.
USE ONLY EXTERNALLY - SEE FIG. 11A.
NOTE: UNDER NO CIRCUMSTANCES SHOULD THESE
SCREWS BE REMOVED WITHOUT FIRST REMOVING
ALL ENERGY RETENTION CELLS FROM THE RADIATOR
10FOnce both sides have been successfully positioned
screw the radiator flush to the wall Fig. 10F.
Do not fully tighten these screws until the core has
been loaded into the radiator as some settling of the
radiator may occur.
11BPlace the 30mm spacer to the outside of the radiator
and the 10mm to the inside. Drill the holes as detailed
in Section 10. Carefully guide the radiator towards
the drilled hole. When in position screw part way
to the wall to secure the radiator as in Section 10,
remembering not to fully tighten the screws.
11. SKIRTING BOARD TALLER THAN 100MM
Use the 10mm and 30mm spacers provided (2 x 10mm
and 2 x 30mm)
11AIf the skirting board is taller than 100mm, the radiator
is to be mounted as shown in fig 11A. Remove
the wall mounting bracket and reassemble in the
alternative orientation to give a greater spacing
distance from the wall.
Solid brick/High density block walls - Fig. 11C
These must be drilled and plugged with the No. 10 size
plastic inserts provided. The correct size of drill (8mm)
should be used and the hole should be drilled to a depth of
15mm greater than the length of the plastic insert so that
the fixing is made below the plaster layer.
Low density block walls - Fig 11d
A special fixing, such as Unifix LB70 should be employed,
following closely the manufacturers instructions.
12. Remove the inner front panel by removing the screws
along its top edge Fig. 12A. Carefully lift the bottom of the
front inner panel out of the retaining flange at the base of
the radiator, Fig 12Band remove the internal packaging,
Fig. 12Ctaking care not to damage the insulation
attached.
13. Lift out the elements from the base insulation and
rotate forwards. Fig. 13.
DO NOT DISCONNECT THE TERMINALS
14. Carefully fit the bottom row of the back layer of energy
retention cells, placing the two end cells in position first with
the flat side toward the back. Fit the top row of cells also
with the recess toward the element. Fig. 14
15. Refit the elements by carefully feeding the tails down
through the hole in the base insulation, ensuring the tab is
pointing forward. Fit the front layer of cells with the flat side
toward the front of the radiator. Ensure that the tab on the
element is captured below the bottom row of cells and that
the element is vertical. Fig. 15A& 15B.
16. Replace the inner front complete with insulation by
locating its bottom edge behind the front lip of the chassis
and inserting the retaining screws along the top and both
sides. Fig. 16.
17. Check that the screws securing the radiator to the wall
have been fully tightened. It is essential that all screws are
replaced to ensure earth continuity.
Once installed DO NOT attempt
to reposition the radiator without
first unloading the energy retention
cells and obtaining the services of a
competent electrician.
Panelled internal walls
If possible, locate the studding and use No. 10 size
woodscrews. Where it is not possible to locate the studding
use type M5 Rawlplug INTERSETS on securely fastened
plasterboard panelling. For other wall materials the wall
panel manufacturer should be consulted for details of
suitable wall fixing devices.

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18. In its factory default setting, the radiant element will
be allowed to operate for up to 2 hours after the beginning of
the off peak charge period to maintain a comfortable room
temperature if required. After 2 hours the radiant element
will be automatically disabled until the end of the off peak
charge period.
In circumstances where it will not be necessary to maintain
a high ambient room temperature between the hours
of typically 12am and 2am (for example a commercial
application) this feature can be disabled by removing the
time delay pin on the power enable board (see Fig. 18A),
which will automatically switch the radiant element off at
the beginning of the off peak charge period.
RADIANT ELEMENT OVERRIDE
REASSEMBLY
19. Reconnect the radiant element connector as shown
in Fig 19A-19H. Replace the outer front panel by hooking
onto the two location clips on the top panel Fig. 19B, 19C
& 19E. Swing the bottom of the front panel gently towards
the radiator Fig. 19Funtil the radiant element connector is
securely placed at the base of the radiator Fig. 19D. Hook
slotsatthebottomoftheplinthovertheplinthfixingtabson
the plastic feet, as shown in Fig. 19G. Slide the plinth into
place as shown in Fig. 19Hand secure in place.
ON NO ACCOUNT SHOULD ANY SURPLUS CABLE
BE PUSHED INSIDE OR BEHIND THE RADIATOR.
CHECK ALL ELECTRICAL CONNECTIONS FOR
TIGHTNESS.
IMPORTANT
20. The wires in the direct acting supply cable are coloured
in accordance with the following code:
GREEN & YELLOW: EARTH
BLUE: NEUTRAL
BROWN: LIVE
BLACK: PILOT WIRE
ELECTRICAL CONNECTION
The BLACK pilot wire is designed to carry a signal from
a compatible remote programming device. If, however, a
remote programmer is not being used, the appliance may
be connected to the fixed wiring of the premises simply by
cutting back the BLACK pilot wire, ensuring that it terminates
within the outer insulating sheath of the supply cable.
DO NOT connect the BLACK PILOT WIRE to earth. When
the programmer drives other radiators, connect the pilot
wires together in series. Any 240V insulated cable may be
used to link pilot wires around the ring main. A low signal
current is used. Suitable connections would be either
an additional single core wire marked or colour coded
appropriately or use a 4 core cable throughout the radiator
ring. As a mains conductor, the pilot wire should be isolated
in accordance with the IEE regulations.
For further details of connection to programming devices,
please refer to the relevant programmer instructions.
The ability to ‘lock’ the controls eg. school conditions, is
achieved by removing the pin shown in Fig. 18B, which will
prevent appliance settings being altered.
REPLACING MAINS WIRE ON DIRECT ACTING
SUPPLY CIRCUIT
HEAT RESISTING CABLE MUST BE USED
(MIN. T85)

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2. To check the radiant panel operation (comfort
heat).
(i) Adjust the temperature control display as follows;
press down the +button until all red bars are
illuminated (shown below). After 2 minutes the
front panel should now feel warm, this will confirm
correct operation.
(ii) If the front panel does not heat up and room
temperature is below 26°C, remove front panel
and ensure there is no damage to front panel or
radiant element and that all electrical connections
are secure. If front panel is still not heating up,
phone customer help line.
NOTE: If room temperature is above 26°C, radiator
will not operate.
IMPORTANT
Once radiator has been confirmed as fully
operational, use Page 2 of the ‘Operating
Instructions’ to set up initial customer
settings.
Please ensure the “Operating Instructions” are
left with the radiator for user information.
Eco Response has a built in self diagnostic function that enables
both service engineers and end users to diagnose faults.
Make sure that the peak supply is on before starting the
diagnostic function.
Adjust the LED’s down until only the blue frost protection
LED is illuminated.
Press and hold the -button for 10 seconds until the blue
LED goes off then release the -button.
The LED’s will now come on one at a time - this indicates
that the radiator is running the diagnostic checks.
A flashing LED will then illuminate to indicate a pass or fail.
Pass - 8th LED flashes - if Wall Mounted Programmer
(PWE4ZC) is not
connected or in Comfort Mode.
Pass - 9th LED flashes - if Wall Mounted Programmer
(PWE4ZC) is in Setback
mode.
Fault Conditions
1st Red LED flashing - Room temperature sensor fault.
2nd Red LED flashing - Core temperature sensor fault.
3rd Red LED flashing - Radiant Panel temperature fault.
Contact Customer Helpline if any of the above faults are
detected.
CHECK PROCEDURE FOR INSTALLERS FOLLOWING INSTALLATION
THIS CHECK PROCEDURE SHOULD BE CARRIED OUR BY A COMPETENT INSTALLER ONLY.
THE OPERATING INSTRUCTIONS ARE AVAILABLE FOR END USERS.
To exit diagnostic mode press either - or + to return
to normal running mode.
Customer Helpline
0845 604 2399