Keston Q28H Installationshandbuch

Qudos 28h User, Installation and Servicing Instructions FAN POWERED HIGH EFFICIENCY MODULATING DOMESTIC CONDENSING GAS HEAT ONLY BOILER CE/PI No.

function, automatic pump and fan exercise in periods of inactivity, anti cycle control anddry fire protection.2.2 BOILER SCHEMATICAir is drawn into

The flue gases are piped in a 50 mm muPVC (BS5255 and/or and BSEN1329) plastic or,alternatively, 75mm Keston composite plastic pipe to outside. The t

BS 6891 : Low Pressure Installation PipesBS 6798 : Installation of Gas Fired Hot Water Boilers of Rated Input Not Exceeding 70kWBS 5449 : Installation

2.4 PHYSICAL DATA - Qudos 28h & Qudos 28hPCabinet Height mm 680Cabinet Width mm 390Cabinet Depth mm 280Top Clearance mm 150Side Clearance mm 5Base

2.6 PERFORMANCE DATA - Qudos 28h & Qudos 28hPSeasonal Efficiency (SEDBUK) = 91.1 (Qudos 28h) & 93.1 (Qudos 28hP)This value is used in the

appliance. When replacing these articles we recommend that the replaced items are notbroken up, but are sealed within heavy duty polythene bags,

3. BOILER LOCATION3.1 DIMENSIONS AND MINIMUMCLEARANCESThe boiler must be installed in minimumclearances shown to allow subsequentservicing,

Compartment installation is permitted - such compartments must be constructed inaccordance with BS 6798.The wall on which the boiler i

The appliance must be connected to the 3A supply via a fused double-pole switchhaving at least 3 mm (1/8 inch) contact separation in both poles, servi

3.5 BOILER SIZE SELECTIONThe Qudos 28h will automatically adjust heat output to match the system requirements atany given time. Efficiency and co

CONTENTSNB : These instructions are an integral part of the appliance. This document must be handed over tothe user on completion of the installation

.WD440/3/2007 Chapter 3 - Boiler Location The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing Instructions Page : 15P

h Jointing should be either with capillary, threaded or compression fittings. Pipesshould have a gradient to ensure air is passed e

capable of meeting the flow rate required at the total pressure loss generated by the boilerand the rest of the system. The selected pump must comply

A 92.5o sweep elbow is equivalent to 1.0m straight length. A 45o bend is equivalent to0.5m straight length.50mm 75mmMaximum Air Inlet Length : 39.0m 1

The Keston Qudos 28h and Qudos 28hP, as with any condensing boiler, willgenerate a condensate “plume” from the flue terminal in a

External wall faces and any internal faces of cavity walls must be made good. Rubbercollars are available for flue and air terminals t

4. INSTALLATION OF THE BOILERRead Chapter 3 - Boiler Location and decide upon the position of the boiler.Installation of the boiler is straightforward

NB: When installing the boiler, consider:Flue Spigot AssemblyThe flue spigot (50mm muPVC) is inside the accessory bag.Put the flue spigot assembled wi

4.6 WATER SYSTEMConnect the flow and return HEATING CIRCUIT system pipework to the boiler. Details ofsystem requirements are given in Chapter 3 - Sect

4.9 Advanced Features WiringThe Qudos 28h features comprehensive and advance functionality as standard.Whilst these advances functions are

5.7 Combustion Testing5.8 Checking The Gas Pressure5.9 Timing The Gas Meter5.10 Handing Over To The User6 FAULT FINDING6.1 Electrical Control Sequence

4.9.3 Solar Control4.10 EXCHANGING A BOILERBefore removing an existing boiler add Fernox Supafloc, or equivalent cleaning agent, inaccordance with t

(minimum 18 mbar required for Natural Gas and 31 mbar required for LP gas). If all jointsare sound and the gas inlet pressure is satisfactory set t

5. COMMISSIONING OF THE BOILERImportant:This condensing boiler contains components which could be damaged or blocked by grease, dirt,solder etc., fr

“RESET” button so that the display reverts to show the actual flow temperature ofthe boiler. Once a heating demand is received the fan will start and

To measure CO2 levels in the Kestonboiler remove the 1/8" plug from theflue outlet pipe spigot (Figure 6.7.4item 17). Insert

7) Press the “RESET” button twice to return to the normal operation mode anddisplay.5.8 CHECKING THE GAS PRESSUREWith the boiler running

6. FAULT FINDING6.1 ELECTRICAL CONTROL SEQUENCEWhen the main external control(s) are calling for heat, power will be fed to the boiler

QUICK REFERENCE6.2 NORMAL OPERATIONThe Qudos 28h and Qudos 28hP boilers feature a user display which shows actual flowtemperature. Howev

6.3 FAULT MODESIf a situation is detected which the boiler considers may cause damage to the appliance the boilerwill enter a lockout mode and stop fu

ERROR HISTORYThe Qudos 28h has an internal memory function that stores the last six errorsencountered along with the sensor readings a

0. HANDLING INSTRUCTIONS0.1 LIST OF CONTENTSThe Keston Qudos 28h and Qudos 28hP are supplied almost totally pre-assembled. The unitsuse standard 50 mm

6.4 FUNCTIONAL FLOW WIRING DIAGRAMWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing

6.5 ELECTRICAL WIRING DIAGRAMWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing Instruc

6.6 ILLUSTRATED WIRING DIAGRAMWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing Instr

6.7 Exploded Assembly Diagrams6.7.1 Boiler Controls Assembly WD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInst

6.7.2 Waterway, Condensate & Flue AssemblyWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation &

6.7.3 Air  Gas AssemblyWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing Instructions

6.7.4 Casing AssemblyWD440/3/2007 Chapter 6 : Fault Finding The Keston Qudos 28h & Qudos 28hP BoilersInstallation & Servicing Instructions P

6.7.5 Exploded Diagrams Parts Reference ListBoiler Controls Assembly (Fig. 6.7.1)GC Number Code Description111 Q28h Main Control PCB(Q.10S.4.01.00.0

7. ROUTINE (ANNUAL) SERVICINGTo ensure the continued safe and efficient operation of the boiler it is necessary to carry outroutine s

c. If necessary clean the burner with a mild household detergent and rinse under ahot running tap.d. If necessary, from visual inspection, clean

then tilt the boiler forwards from its back onto its base and remove carton by sliding up overthe boiler. When lifting this appliance the back

8. REPLACEMENT OF PARTSCONTENTS8.0 GENERAL8.1 PRECAUTIONS8.2 ACCESS8.3 REPLACEMENT PROCEDURE8.4 ELECTRICAL COMPONENTS8.4.1 CONTROL PANEL8.4.2 BOILER F

8.4.2 Boiler Flow and Return Thermistors (Fig. 6.7.2 item 48)i) Isolate the appliance (Section 8.1)ii) Gain access (Section 8.2)iii) Remove the push o

iv) Unscrew the bolts (Fig 6.7.3 item 94) securing the gas inlet pipe to the gascontrol valve.v) Remove the four nuts securing the combustion blower (

8.7 HEAT EXCHANGER (Fig. 6.7.2 item 41)i) Isolate the appliance (Section 8.1)ii) Gain access (Section 8.2)iii) Shut off the water supply to the applia

9. SHORT SPARE PARTS LISTItem GC No Part Denomination Item GC No Part Denomination42 Burner KIT 64 Burner Gasket55 Ignitor Gasket 43 Igni

163 Q28h Gas Valve - Mixer Assem. 91 FanQ28hP Gas Valve - Mixer Assem.112 Control Panel 111 Q28h Control PCB Q28hP Con. PCBWD440/

SHORT SPARE PARTS LIST FOR THE KESTONCONDENSING BOILER RANGEItem GC No Part Denomination42 Burner KIT64 Burner Gasket43 Ignitor KIT55 Ignitor Gasket48

WD440/3/2007 Chapter 10 : Benchmark Checklist Final The Keston Qudos 28h & Qudos 28hP Boilers Installation & Servicing Instructio

WD440/3/2007 Chapter 10 : Benchmark Checklist Final The Keston Qudos 28h & Qudos 28hP Boilers Installation & Servicing Instructio

bRead Installation Manual CarefullybEnsure that ALL dust particles, filings , plastic chips etc. areremoved from the inlet pipe.bIf the i

1. USER INSTRUCTIONS1.1 INTRODUCTIONThank you for choosing this Keston Qudos 28h for your household heating. The boiler isdesigned to be

Normal OperationDuring normal operation the digital display will show the current boiler temperature and willshow relevant operational symb

1.4 SAFETY INFORMATIONIF YOU SUSPECT A GAS LEAK TURN OFF THE APPLIANCE IMMEDIATELY, TURN OFFTHE GAS TAP TO THE APPLIANCE (LOCATED UNDERNEATH) AN

2. GENERAL INSTRUCTION2.1 DESCRIPTIONThe KESTON Qudos 28h and Qudos 28hP boilers utilise the latest in condensingtechnology to produce