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25

Concord CXC  - 

 Installation

34 HANDING OVER

ROUTINE OPERATION

Full instructions covering routine lighting and operation of the boiler are
given on the Lighting and Operation Instruction Label located on the inside
of the casing door.

Draw the attention of the boiler owner or his representative to the Lighting
and Operating Instruction Label on the inside of the casing door.  Give a
practical demonstration of the lighting and shutting down of the boiler.

Describe the function of the boiler and system controls and show how they
are adjusted and used.

Hand over these and the User’s Instructions to the customer and request
him to keep them in a safe place for ready reference.

IMPORTANT.  Point out to the owner that the boiler must have regular
maintenance and cleaning, at least annually, in order to ensure reliable
and efficient operation.  Regular attention will also prolong the life of the
boiler and should preferably be performed at the end of the heating
season.

Recommend that a contract for this work should be made with a CORGI
registered installer.

Caradon Plumbing Limited do not accept any liability
resulting from the use of unauthorised parts or the repair
and servicing of appliances not carried out in accordance
with the Company’s recommendations and specifications.

A comprehensive service should be carried out at least
once a year. The User is advised to make a contract with
a CORGI registered engineer.

WARNING.
ALWAYS turn 

OFF the gas supply at the gas cock and

switch 

OFF and disconnect the electricity supply to the

appliance BEFORE servicing or replacing any
components.

CLEANING THE BOILER

Pull and lift off the lower front panel.

Remove the screw from the top of upper front panel. Pull
the panel forward and lift the bottom hooks clear of the
lower top panel.

32 TESTING

33 ADJUSTMENT OF WATER

FLOW RATE THROUGH THE
BOILER

When commissioning the heating/
domestic hot water system the shunt
pump must be adjusted to give the
minimum flow rate given in Table 5, when
that part of the system intended to be
used for dissipation of residual heat only
is in operation.

Check that the main burner responds correctly to manual on/off operations
of any controls fitted in the gas control circuit. Check, in the following
manner, the operation of the flame failure safety device.

1. Extinguish the main burner by turning off the main gas inlet cock.  Refer

to Frames 23 and 24.

2. Check that the display shows "Detection Lockout".

3. Turn on the gas cock and reset by pressing [COPY].

4. Complete the casing assembly.  Refer to Frame 13.

5. Important Commissioning / Operating Instructions:

Do not operate this appliance for long periods or take any combustion
readings with the casing or any part of the casing removed.

31 COMBUSTION SYSTEM

SOUNDNESS CHECKS

Remove the upper front casing panel.

Check that there is no leakage of

combustion products around the fan,

secondary heat exchanger and flue

connection, using a smoke match or

smouldering taper.

If any leaks are evident, immediate steps

must be taken to rectify them.

SER

VICING

SERVICING

35 SERVICING

Содержание Concord CXC 48

Страница 1: ......

Страница 2: ...2 Concord CXC Installation CAUTION To avoid the possibility of injury during the installation servicing or cleaning of this appliance care should be taken when handling edges of sheet steel components...

Страница 3: ...s maintained in the primary heat exchanger to prevent corrosion CASING The combined boiler bodies are enclosed in a white stove enamelled casing which incorporates a control panel fascia The casing is...

Страница 4: ...67 58 Btu h x 1000 96 900 138 500 185 800 230 600 Boiler Input Gross kW 52 5 75 1 100 7 125 Btu h x 1000 179 100 256 200 343 600 426 500 High Rate Nett kW 47 3 67 67 90 73 112 6 Btu h x 1000 161 400...

Страница 5: ...central heating systems Independent indirect pumped domestic hot water or central heating systems Fully pumped systems may be open vented or sealed Flow and return connections are 2 BSP Safety Valve...

Страница 6: ...s flue system must be so placed or shielded as to ensure that its temperature does not exceed 65 o C 150 o F MULTIPLE BOILER INSTALLATIONS The minimum installation clearances must conform to the dimen...

Страница 7: ...l depend upon the particular characteristics of the system Pumping over of water into the expansion cistern must be avoided and cost Graph 1 is based on a 20 C temperature difference across the boiler...

Страница 8: ...em then any unsuitable water additives MUST be thoroughly drained MINIMUM FLOW OF WATER Refer to Table 5 The system design must provide for an adequate flow rate through the boiler at all times when t...

Страница 9: ...the flue system must be impervious to condensate leakage and also any low points in the flue system should be drained using pipe of material resistant to condensate corrosion Care should also be taken...

Страница 10: ...pipework should INSTALLATION INSTALLATION be fitted and tested for gas soundness in accordance with BS 6891 for small installations or IGE UP 1 and IGE UP 2 for large installations The local gas supp...

Страница 11: ...ote Before manoeuvring the boiler into its final position see Frame 8 INSTALLATION INSTALLATION 6 PACKAGING The Concord CXC boiler is despatched from the factory fully assembled except for the casing...

Страница 12: ...into the normal drainage system The pipe should be installed with an adequate slope e g 1 in 50 and consideration should be given to frost protection The drain should be in accordance with IM 22 Conn...

Страница 13: ...of the control box Unpack the control box from its carton and find the mains plug strapped to the back of the box The boiler casing should now be fitted The jacket hardware pack contains all the scre...

Страница 14: ...earth leads as shown 9 Route the overheat thermostat capillary through the cable clips as shown Ensure the phial is correctly seated in the correct pocket opposite side to the flow connection refer t...

Страница 15: ...ontacts or any mains voltage If no external controls are fitted a link must be fitted across EXT C The boiler provides frost protection via the boiler sensor If an external frost thermostat is require...

Страница 16: ...vidually be able to satisfy the conditions in the foregoing paragraph If not all zones can do this then consider other means of control detailed on other sheets Normal operation When any thermostat is...

Страница 17: ...ZONES WITH INDIVIDUALLY PUMPED ZONES 3 zones shown IMPORTANT Terminal L2 may control the appropriate pump s directly provided that the total running or starting current does not exceed 6A resistive or...

Страница 18: ...an 55 C before proceeding to maximum rate If the boiler fails to light allow the controls to cycle until ignition is established If the boiler fails to light after 5 attempts the display will show Det...

Страница 19: ...ntial to adjust the maximum setting first 4 Adjust the system controls to ensure that the boiler will operate at high rate for a reasonable period then remove the dust cover and adjust the high rate b...

Страница 20: ...5 attempts the burner has failed to light the boiler will go to lockout and will be displayed on the screen When the boiler flow temperature reaches the thermostat set point the controls will turn th...

Страница 21: ...BY the rotating information screens will not be in evidence An example of the display is as follows MONDAY 14 10 19 09 95 ON HIGH 50 C HOURS RUN 250 TEMP SET 82 C PROGRAMMER ON ENTER FOR MENU To switc...

Страница 22: ...CXC Installation 28 DESCRIPTION AND OPERATION OF BOILER CONTROLS continued The diagram below shows the sequence of steps to be taken when reading the instructions on the following pages INSTALLATION I...

Страница 23: ...usage or 24 hour If the Programme Hours option is selected the boiler will go on and off subject to the times programmed If ALL DAY usage is selected the boiler will come on at the first ON period se...

Страница 24: ...ld be repeated for all 3 time zones for Monday After the last EXIT the display will ask if this day s programmes require to be copied to Tuesday If the YES button is pressed Tuesday s programme will b...

Страница 25: ...WARNING ALWAYS turn OFF the gas supply at the gas cock and switch OFF and disconnect the electricity supply to the appliance BEFORE servicing or replacing any components CLEANING THE BOILER Pull and l...

Страница 26: ...hanger especially from between the fins using the brush provided and remove all debris from the combustion chamber floor Examine the burner assembly Clean the burner bars by brushing them down with a...

Страница 27: ...ve and replace the casing top and front panels fan NOx duct and the burner front plate as necessary described under Servicing 39 GAS CONTROL VALVE 1 Disconnect the electrical connections to the faulty...

Страница 28: ...as inlet union 3 Gas control valve 4 O ring seal 5 Spark generator 6 Burner manifold 7 Main injector 3 off 8 Main burner centre RH 2 off 9 Main burner LH 1 off 10 Ignition electrodes 11 Overheat therm...

Страница 29: ...ing bracket 13 Overheat thermostat 14 Detection electrode assembly 15 Gas pipe 16 Gas restrictor PTP Pressure test point Overheat thermostat Con 1462 3 2 4 Reset button 1 1 Remove the split pin from t...

Страница 30: ...NG SERVICING 4 Printed circuit board No 34 5 Back panel 6 Hinge pin 7 Controls box LEGEND 1 Wiring clamp 2 Connection box plug 3 Connection box 45 CONTROL SENSOR 1 Remove the upper front panel and low...

Страница 31: ...however recommend that for your own comfort and to comply with good working practise the procedure described below is followed IMPORTANT Turn OFF the gas and DISCONNECT the electricity supply To repl...

Страница 32: ...r front casing panel 1 Unscrew the pressure switch from its mounting bracket Transfer the electrical connections and sensing pipes to the new pressure switch 2 Reassemble in reverse order 51 FAN REPLA...

Страница 33: ...o C when the heat demand is satisfied and will continue to run until the boiler flow is less than 75 o C If the flow temperature is less than 75 o C when the demand for heat is satisfied then the pum...

Страница 34: ...ES Fault codes numbered 1 to 24 are displayed where applicable In this event contact Caradon Plumbing Limited SHUTDOWN Demand ON If temperature senses than set point Demand off Flame ON For 55 C no de...

Страница 35: ...PY Replace faulty solenoid Press COPY Refer to screens Change gas valve or solenoid Press COPY Observe the display Take actions as follows depending upon the display Check system Press COPY Replace se...

Страница 36: ...lves 28 HONEYWELL VR4605PB 2003 CXC 48 70 1 111 867 28A HONEYWELL VR4605A 1104 CXC 94 116 1 138 896 28B HONEYWELL VR4605AB 1019 CXC 94 116 1 111 869 28C Plug gas valve CXC 48 70 1 111 872 28D Plugs an...

Страница 37: ...erts clips studs CXC 48 1 077 725 CXC 70 1 077 727 CXC 94 1 077 729 CXC116 1 077 731 59 Casing RH side panel white stove enamel including nutserts clips studs CXC 48 1 077 726 CXC 70 1 077 728 CXC 94...

Страница 38: ...38 Concord CXC Installation NOTES...

Страница 39: ...39 Concord CXC Installation NOTES...

Страница 40: ...inuing improvement in the design and performance of its products The right is therefore reserved to vary specification without notice The Ideal Boilers Technical Training Centre offers a series of fir...

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