A.O. Smith EQ 380 G User Manual

WATERSTORAGE HEATERSUNITED KINGDOM / IRELANDMODELSEQ 280 GEQ 380 GINSTALLATION- AND USERINSTRUCTION

101.3.2 Technical dataDevice category: II2H3+DESCRIPTION unit EQ 280 EQ 380DATA NATURAL GAS G20 - 20 mbar:Nominal heat input (lower value) k W 22.6 24

11DESCRIPTION unit EQ 280 EQ 380GENERALStorage capacity litres 265 355Water connections ** - 1" - 14 NPT 11/4" - 14 NPTGas connection - ISO

122. FOR THE INSTALLER2.1 Installation instructionsThis water heater must be fitted in alocation which will permit the provisionof an approved flue sy

13the current building regulations shouldbe used. Installation should be carriedout generally as shown on the followingdiagram. See drawing 4.A.O. Smi

14All connections and joints should betested for gas soundness with asuitable leak detector (do not use anaked flame).2.1.4. Flue systemThe water heat

152.2 CommissioningFilling the water heater1. Close the drain tap.2. Open the cold water tap to the waterheater and open all taps where hotwater can b

162.3 Pilot adjustmentThe pilot can be adjusted by meansof the regulating screw under theplastic cover on the right hand side ofthe gas control block

172.6 Setting the nominal heatinputThe gas control has been factorypreset to the water heater nominal heatinput.A further check of the burnerpressure

18UnitEQ 280 EQ 380G20 G30 G31 G20 G30 G31Inletpressure mbar 20 30 37 20 30 37Burner pressure mbar 12.5 30 37 8.7 30 37Diameter main mm 3.90 2.30 2.25

192.8 MaintenanceTo ensure safe and efficientoperation of the water heater it isrecommended that it is cleaned andserviced at least once a year by aqu

2Read these installation instructions first before installing the appliance. Carefully readthe user instructions before igniting the appliance. Failur

202.8.3 DecalcificationFormation of lime scale depends onthe quality and quantity of the waterused. In addition higher watertemperatures lead to more

21Flue down draught safety deviceIf the flue tube safety device hasswitched off the appliance, theappliance can be put back into operationthrough the

223. FOR THE USER3.1 CommissioningWarningInstalling and commissioning of thiswater heater should only be carried outby a qualified competent heatingen

23Failure Cause Measure3.4 Fault findingBlocked pilot burnerBlocked chimneySafety thermostatThermocouple defectiveThermocouple makes no contactGas sup

244. GUARANTEEThe following conditions form theguarantee agreement between A.O.Smith Water Products Company (thewarrantor) and the owner of the waterh

254.7 No other guarantee orwarranty either expressedor implied is made onbehalf of A.O. Smith WaterProducts Company.With respect to the water heater i

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27MODEL: ...SERIAL NUMBER: ...

0308 645 R0

3CONTENTS PAGE1. General. ... 41.1 - Description

41. GENERAL1.1 Description of the applianceConstruction of the water heater isin accordance with the Europeanstandard for gas heated water storageheat

51) Draught diverter2) Hot water outlet3) Insulation material4) Flue tube5) Glass lined tank6) Gas control valve7) Cold water inlet pipe8) T&P saf

61.2 Technical safety equipmentGas control blockThe water heater has been fittedwith a gas control block consisting of athermo-electrical pilot flame

7It is the aim of the T.R.S. to preventflue gasses from the water heaterentering the room where the waterheater has been placed, instead ofpassing thr

81.3 Technical description1.3.1 DimensionsThese water heaters are onlysuitable for a flue tube with minimal theannounced diameter (dimension G).All di

9Drawing 3 - Dimensions