Gas valve

maintenance guide

Tools

Time

15 min

Remove the combustion assembly	Twist the gas valve anti-clockwise to disconnect it from the
(see 4.3)	fan

Replacement gas valves are not factory set and will need to be set up (see page 33)

Bayonet

Bayonet connection connecti

Legend

1.Venturi

2.Gas valve

3.Solenoids

4.Inlet test nipple

5.Offset adjustment 6.Throttle adjustment

Note: When changing the gas valve, the new gas valve is not preset. Ensure the maximum + minimum CO2 valves are set up in accordance whit the commissioning procedure.

Page 50

Image 50

Ariston E-COMBI 24 30 38 manual Gas valve

Contents

Combi 24/30/38 System24/30 Maintenance guide InstallationMaintenance Overview Benchmark Scheme To the InstallerOverview CE labelling Advice for the installerSymbols used on the data plate Personal injury caused by falling from a height Safety regulationsNoisiness during operation Personal injury caused by knocks, stumbling etc Product description Control panel Flue connector W. Flow switch Manual air vent Overall view Overall Dimensions Minimum clearances Technical Data Model E-COMBI Model E-SYSTEM Installation Location Flushing and Water TreatmentSystem Controls Boiler is equipped with a stainless steel heat exchanger Condensate Discharge Method of positioning the boiler on the wall Installing the BoilerConnecting the boiler to the system Connection for Filling Loop Safety Valve Discharge and Condense Outlet Gas connectionIs connected to the 3 bar safety relief valve Mbar Secondary heat exchanger Pressure relief valve By-pass Water circuit diagramManual air vent Burner Condensate trap Circuit filter 180 Connecting the FlueVertically from a terminal on the same wall 4x Screws 60 / 100 Horizontal ContentsFitting the Coaxial Flue 2x Seals Fitting the 5 Flue Ø 80 / 125 Horizontal/vertical Fitting the Coaxial Flue Ø 60 / 100 Vertical Fitting the Twin Pipe Ø80 120 180 Exhaust-air m Type Table of flue gas exhaust duct lengthsType of air suction/flue gas exhaust ducting Combustion air intake from outside Peripheral unit connection Power supply cableElectrical connections 120 Connector TA on Terminal block Room Thermostat / Remote Clock Connection Electrical diagram Display Commissioning Filling the Heating System Initial preparationElectricity supply Filling of the DHW System Combi only Check the type of gas and change the gas if necessary First ignition operationMeasure the gas inlet pressure. standing + warming pressure Analyse the combustion see Adjust the setting on the front panel Setting Regulating the central heating ignition delayAdjust the central heating ignition delay Irst ignition Test function and combustion analysis Checking the gas settingGas setting Minimum gas flow combustion analysis Boiler protection devices Maintenance Min Maintenance guideGeneral access Tools Time Fuse Tools Time Control box access Tools Time MinElectrical unit Open the control box as above Remove the fuse Main P.C.B Tools Time Display P.C.B Tools Time Right hand hydraulic block assembly Hydraulic Unit Way valve unit Tools Time Draining Tools Time Automatic air vent Tools Time Primary water pressure sensor Tools Time Pump Tools Time W. Flow Switch assembly E-COMBI Tools Time Filter Tools Time Left hand Hydraulic block assembly Secondary Heat Exchanger E-COMBI Tools Time Condensate Trap Tools Safety valve Time Unscrew the condense trap from the condense body By-Pass Assembly Tools Time Temperature Sensor Isolate the gas supply. Remove the four Manual Air vent Tools TimeMain Heat Exchanger Tools Time Changer Burner unit Fan Spark generator Electrodes Power Length Venturi Burner Fan Gas valve Flow switch operation Annual Maintenance Plate heat exchangerBy-pass & Safety valve Central heating filter Eeprom Error Fault finding Overheat InsufficientProbe problem Error GAS Boiler System Commissioning Checklist Service 3 Date Service ProviderService 1 Date Service 5 Date Short List 420010275800