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Sales/Spares & Replacement Help Line 01604 762881

1.  

FEATURES

 

Appliance Classification:

 

The QuanTec Combi has been tested 
and CE certified by B.S.I Ltd for use with 
NATURAL Gas G20.

2.  

GENERAL DESCRIPTION

2.1  

The QuanTec Combi appliance is a high efficiency combination boiler, designed to provide both central heating 
and domestic hot water on demand. It’s design is room sealed, taking combustion air from outside and expelling 
the products of combustion back to the outside.

 

Standard features include full sequence automatic spark ignition, low water content stainless steel heat exchanger, 
automatic bypass and boiler frost protection, a daily pump and divert valve exercise.

 

Variable CH and DHW temperature controls are fitted on the user control.
•  Central heating (CH) output is fully modulating with a range of 30C is 4.58 to 25.6kW, and 24C is 4.83 to 18.48kW
•  Instant domestic hot water (DHW) output is also fully modulating with a maximum of 30C is 30.3kW, and 24C is 

24.8kW

2.2  

When no demand for CH, the boiler fires only when DHW is drawn off.

 

When there is a demand for CH, the heating system is supplied at the selected temperature of between 45°C and 
82°C, until DHW is drawn off. The full output from the boiler is then directed via the diverter valve to the plate heat 
exchanger to supply a nominal DHW draw-off on the 30C is 12.31l/min and the 24C 10.1l/min at 35°C temperature 
rise.

 

The DHW draw off rate specified above is the nominal that the boiler flow regulator will give. Due to system 
variations and seasonal temperatures DHW flow rates/temperature rise will vary, requiring adjustment at the draw 
off tap.

 

At low DHW draw-off rate the maximum temperature is limited to 65°C by the modulating gas control.

 

The boiler features a comprehensive diagnostic system which gives detailed information on the boiler status when 
operating, and performance of key components to aid commissioning and fault finding.

FEATURES

1

Rain Trap

2

Flue Sensor

3

View Port

4

Heat Exchanger

5

Ignition/Detection Electrode

6

Flow Thermistor Sensor 

(behind return)

7

Return Thermistor Sensor

8

Combustion Air Fan

9

Condensate Trap

10

DHW Water Temperature Sensor

11

Diverter Valve

12

Control Panel

13

Gas Valve

14

DHW Filter & Flow Regulator

15

Pump

16

CH Water Pressure Sensor

17

Automatic Air Vent

18

Pressure Relief Valve

19

Burner Injector

20

Venturi

21

Expansion Vessel

22

Central Offset Flue Adapter

FIGURE 1. QUANTEC COMBI FEATURES

FIGURE 1 QUANTEC COMBI FEATURES

2

12

1

3

21

22

20

19

17

16

15

14

4

5

7

6

9

8

13

11

10

18

Summary of Contents for 30C

Page 1: ...AT E R V E N T I L AT I O N INSTALLATION COMMISSIONING SERVICING INSTRUCTIONS QUANTEC COMBIErP High Efficiency Combination Boiler QuanTec 30C ErP G C No 47 416 12 QuanTec 24C ErP G C No 47 416 13 The...

Page 2: ...l Burner Assembly Removal Heat Exchanger Condensate Trap 18 Parts Replacements 30 Part Replacements without Draining the System Draining the Appliance System 19 Fault Finding Flowcharts Blocking Codes...

Page 3: ...C until DHW is drawn off The full output from the boiler is then directed via the diverter valve to the plate heat exchanger to supply a nominal DHW draw off on the 30C is 12 31l min and the 24C 10 1l...

Page 4: ...ng of water based heating systems BS 5546 Installation of gas hot water supplies for domestic purposes 2nd Family Gases BS 6798 Installation of gas fired hot water boilers of rated input not exceeding...

Page 5: ...4 4 1 Ensure the mains supply voltage frequency number of phases and power rating comply with details on the rating label 4 4 2 All wiring must be in accordance with the appropriate standards The equ...

Page 6: ...ed heat output and low temperature regime 1 98 9 99 1 AUXILLARY ELECTRICITY CONSUMPTION At full load elmax 0 068 kW At part load elmin 0 048 kW In standby mode PSB 0 002 kW OTHER ITEMS Standby heat lo...

Page 7: ...73lts Electrical supply 230V 50Hz Electrical rating 100W External fuse rating 3A Expansion vessel capacity 8 litres Expansion vessel initial charge pressure 1 0 bar Heating system minimum pressure 0...

Page 8: ...her materials may be used IMPORTANT Any external runs must be in accordance with BS 6798 The drain outlet on the boiler is sized for standard 21 5mm overflow pipe 24C 30C TABLE 3 PERFORMANCE DATA MAXI...

Page 9: ...ctrical installations and I S 813 6 2 4 TIMBER FRAME BUILDINGS When installed in a timber frame building guidance should be taken from the gas industry publication IGE UP 7 Guide for Gas Installations...

Page 10: ...321 123 212 183 780 321mm FIGURE 4 QUANTEC COMBI DIMENSIONS FIGURE 5 FLUE CLEARANCES KITCHEN LAYOUT TOP VIEW TABLE 3 EXPANSION VESSEL REQUIREMENTS Vessel charge and initial system pressure bar bar 0...

Page 11: ...supply to the CH system This is used to fill the CH system on installation and whenever the water pressure has been removed for system modifications etc The filling loop complies with the water suppl...

Page 12: ...ATE TO PLATE HEAT EXCHANGER DIVERTER VALVE FILLING LOOP FLOW THERMISTOR RETURN THERMISTOR DHW FLOW RESTRICTOR DHW COLD INLET FILTER DRAIN TAP DHW THERMISTOR PUMP AUTOMATIC AIR VENT LOW PRESSURE SWITCH...

Page 13: ...4 screws provided 9 2 3 Lift the appliance onto the fixing bracket and lower into position FIGURE 8 FIXING BRACKET INSTRUCTIONS www joh nsonand starley c o uk sustainable solutions under one roof H E...

Page 14: ...egulations 1998 and the Building Regulations If no specific instructions are given reference should be made to the relevant codes of practice THESE RELEVANT STANDARDS SHOULD BE FOLLOWED BS 5440 1 Flue...

Page 15: ...eaves 200mm F Below balconies 200mm G From a vertical drain pipe or soil pipe 150mm H From an internal or external corner Greater than 450mm protrusion 300mm H From an internal or external corner Grea...

Page 16: ...le from Johnson Starley The distance between the guard and the nearest part of the terminal must not be less than 50 mm 10 7 6 The flue MUST NOT be installed under a car port 10 8 PLUME TERMINAL OUTLE...

Page 17: ...ical 1000 0020740 16 Plume Management Kit Black 1 Horizontal Vertical 1000 0020730 17 1000mm Extension Flue 60mm Black 1 Horizontal Vertical 1000 0020740 18 90 Elbow 60mm Black 1 Horizontal Vertical 1...

Page 18: ...l template Label Ref 1000 2217950 3 500mm Pitched Roof Weather Collar 500mm 1140mm Flat Roof Weather Collar 20 to 50 Ridge Terminal Ridge Terminal Clamps Flue Extensions Vertical Appliance Adaptor Adj...

Page 19: ...in between the locating pips on the end of the terminal 2 NO OUTSIDE ACCESS 2 1 If no access is available from outside the building drill a 125mm diameter hole 2 2 Mount the wall bracket and the boil...

Page 20: ...e trace heating manufacturer and any specific recommendations regarding pipe diameter insulation etc should be followed All other relevant guidance on condensate drainage pipe installation should also...

Page 21: ...vided in hardware pack 12 4 5 Connect wires to terminal block 12 4 6 Swing the control box back up into the operating condition and re fit the front panel ensuring a good seal is made 12 5 THERMOSTATS...

Page 22: ...www johnsonandstarley co uk 22 13 WIRING DIAGRAM FIGURE 22 WIRING DIAGRAM COLOUR Red RD Brown BN White WH Grey GY Yellow YE Pink PK Black BK Violet VT Orange OG Green Yellow GNYE Blue BU...

Page 23: ...bar When reached closed the isolation valves 14 5 5 Disconnect the left hand filling loop retain the top hat washer and using the blanking caps cap off the connection and the end of the filling loop...

Page 24: ...LY PRESSURE RELIEF VALVE DRAIN FLEXIBLE FILLING LOOP FILTER WASHER DHW INLET CH RETURN CH DRAIN POINT ITEM DESCRIPTION ITEM DESCRIPTION A CH Central heating flow Black handle E CH Central heating retu...

Page 25: ...ed 15 6 4 Reset the boiler see paragraph 15 3 The boiler will repeat its ignition sequence If reset occurs 5 times within 15 minutes then F 15 will be shown If power is removed this will be reset 15 6...

Page 26: ...icity supplies to the boiler and drain down to complete the flushing process NOTE A flushing solution should be used during the flushing procedure Flushing solutions Fernox Superfloc Sentinel X300 new...

Page 27: ...mmissioning please complete the Commissioning Checklist before handover to the customer For IE it is necessary to complete a Declaration of Conformity to indicate compliance to I S 813 IMPORTANT 16 11...

Page 28: ...6 3 Remove the second electrical cable from the rear of the fan 17 6 4 Replace with new and refit by aligning the grooves on the side of the fan and slot back into place 17 5 5 Refit in reverse order...

Page 29: ...er 17 9 CONDENSATE TRAP Refer to paragraph 17 5 17 9 1 Unscrew the 2 pipes and pull off the third pipe 17 9 2 Remove the trap and clean by removing the cleaning plug Flush out any deposits with clean...

Page 30: ...urner 19 3 7 Refit in reverse order 19 3 8 Check the operation of the boiler See Section 15 18 4 FLOW RETURN THERMISTOR SENSORS 19 4 1 Refer to paragraph 17 5 19 4 2 Unclip the thermistor sensor from...

Page 31: ...e order 18 10 7 Check operation of the boiler See Section 15 DRAINING THE APPLIANCE 18 11 CENTRAL HEATING CIRCUIT 18 11 1 Refer to paragraph 17 5 See Figure 25 18 11 2 Close all the CH water isolating...

Page 32: ...18 17 DHW PLATE HEAT EXCHANGER 18 17 1 Refer to paragraph 17 5 See Figure 47 18 17 2 Drain the boiler See paragraph 18 11 and 18 12 18 17 3 Remove the fan See paragraph 17 6 18 17 4 Remove 2 allen scr...

Page 33: ...nsor 18 20 4 Replace and refit in reverse order 18 20 5 Check operation of the boiler See Section 15 18 21 EXPANSION VESSEL RECHARGING 18 21 1 Refer to paragraph 17 5 18 21 2 Relieve system pressure t...

Page 34: ...ng and integrity of the internal boiler wiring is working OK Check condition of the Flame Sensor Electrode and replace if necessary Is approx 24 VDC supply available at the gas valve Check that the pu...

Page 35: ...ation valves check as supply then reset boiler Check and replace wiring as necessary Replace the Flow Return Sensor Secure Sensors and reset Replace Sensor Check pump is rotating Remove the return the...

Page 36: ...to 9 way connector on PCB X5 Replace PCB NO NO NO Fill and vent the system and open all isolation valves check as supply then reset boiler Replace the flue thermistor Secure to PCB Is the boiler CH s...

Page 37: ...Is the water system pressure under 2 8bar Is the wiring securely connected to sensor Is the boiler a system type with heat recovery Does the resistance of the flow and return sensors correspond to a...

Page 38: ...Are the timer and room thermostat switched on Is there 24V at A see diagram YES NO YES NO NO YES YES YES YES YES Is the hot cold pipework crossed Replace the PCB Is the wiring connected between PCB D...

Page 39: ...37 8 Venturi Gasket 1 1000 1508630 J21 243 9 M5 Screws 4 1000 3003330 J21 244 10 M5 Nuts 4 1000 3003820 J21 238 11 Ignition Detection Electrode 1 1000 0711785 J21 229 12 Electrode Gasket 1 1000 250127...

Page 40: ...J21 268 28 15mm O Ring 1 29 Clip 1 30 Pressure Sensor Harness 1 1000 0526945 J21 278 31 DHW Temperature Sensor 1 1000 0302195 J21 267 32 Flow Return Temperature Sensor 1 1000 0526515 J21 700 33 Flue S...

Page 41: ...working order Highlight to the customer any remedial or improvement work identi ed during the course of commissioning or servicing work Refer to the manufacturer s helpline where assistance is needed...

Page 42: ...uired Thermostatic radiator valves Fitted Not required Automatic bypass to system Fitted Not required Boiler interlock Provided ALL SYSTEMS s instructions Yes What system cleaner was used What inhibit...

Page 43: ...Company name Telephone No Gas safe register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 06 Date Engineer name Company name Telephone No Gas...

Page 44: ...y co uk Reception Customer Service 01604 762881 Fax 01604 767408 Johnson Starley Dravo Division Industrial H V Sales 01604 707022 sales johnsonandstarley co uk www dravo co uk Anniversary 1922 2012 In...

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