A.O. Smith 28 30 50 60 Humidity and ambient temperature, Maximum floor loading, Water composition

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3

3.3.1

Installation	is

Humidity and ambient temperature

The boiler room must be frost-free, or be protected against frost. Table 3.1 shows the environmental conditions that must be adhered to, for correct functioning of the electronics present in the appliance to be guaranteed.

Table 3.1 Humidity and ambient temperature specifications

Humidity and ambient temperature

Humidity	max. 93% RH at +25°C

Ambient temperature	Functional: 0 ≤ t ≤ 60°C

3.3.2Maximum floor loading

In connection with the appliance’s weight, take account of the maximum floor loading, see Table 3.2.

Table 3.2 Weight specifications related to maximum floor loading

Weight of the appliance filled with water

BFC 28	392 kg

BFC 30, BFC 50, BFC 60	593 kg

3.3.3Water composition

The appliance is intended for heating drinking water. The drinking water must comply with the regulations governing drinking water for human consumption. Table 3.3 shows these requirements.

Table 3.3 Water specifications

Water composition

Hardness	> 1.00 mmol/l:
(alkaline earth ions)	• German hardness >5.6° dH
	• French hardness > 10.0° fH
	• British hardness > 7.0° eH

Conductivity	> 125 ∝S/cm

Acidity (pH value)	7.0 < pH value < 9.5

nRemark

If the water specifications deviate from those stated in Table 3.3, then the tank protection cannot be guaranteed.

See also chapter ’13 Warranty (Certificate)’.

3.3.4Working clearances

For access to the appliance it is recommended that the following clearances are observed (see Figure 3.2):

• AA: around the appliance’s control column and cleaning openings: 100 cm.

• BB: around the appliance itself: 50 cm.

• Above the appliance (room to replace the anodes):

-100 cm if using fixed anodes, or

-50 cm if using flexible anodes.

18	Instruction Manual BFC

Image 18

Contents Release R.1.3 UK Your installer Liability CopyrightTrademarks More informationPage Table of contents GisStatus of the appliance Filling and drainingControl panel Starting up and shutting downMaintenance frequency Service programTroubleshooting MaintenanceAppendices IndexIntroduction What to do if you smell gas RegulationsAbout the appliance Remark Target groups Maintenance Forms of notationSymbol Target group IntroductionOverview of this document Overview of thisDocument Chapter Target groups DescriptionGis Functioning of the appliance Introduction Functional description of the applianceIntroduction Water temperature protection Gas control Pressure switch Ionisation rodAppliance’s heating cycle Protection for the appliance Gas control Water temperature protectionPressure switch 3 FanVented installation Safety of the instal- lationUnvented installation Ionisation rodInstallation Introduction Packaging Environmental conditionsWater composition Humidity and ambient temperatureMaximum floor loading Working clearancesEnvironmental conditions Working clearancesTechnical specifications Plan and elevation of the applianceDime Description BFC Nsion DimensionsTechnical specifications Unit BFCVAC General Installation diagramGas data G30-30 mbar butaneInstallation UnventedCirculation pipe Water connections, Unvented Cold water sideHot water side Condensation drainageSee paragraph ’3.6.4 Condensation drainage’ Water connections, VentedGas connection See din FigureDimension BFC Air supply and flue gas dischargeAir supply and flue gas discharge Specification Description Concentric wall flue terminalConcentric roof flue terminal specifications Concentric roof flue terminalElectrical connection PreparationPreparation Mains voltage Mains voltage Electrical connectionContinuous pump Extra on mode switch Tank onIsolating Transformer Program-controlled pumpChecking the supply pressure and burner pressure Connecting extra error signal Alarm OUTChecking the supply Pressure and burner ApplianceMain menu Conversion to a different gas category Conversion to a different gas categoryRemove the burner as complete assembly 13 Conversion of gas control Check the burner and supply pressure see paragraphInstallation Filling and draining Filling the appliance Filling unvented installationsFilling vented installations Filling the applianceInstallation diagrams F d c Filling and drainingDraining the appliance Draining unvented installationsDraining vented installations Draining the applianceGis Control panel Introduction OperatingPC connection Explanation of the icons ON/OFF switch of ThermoControlNavigation buttons Control panelOperating modes Error conditions Service condition Status of the applianceIntroduction Operating modes Error conditions Status of the applianceService condition Service conditionGis Introduction Starting up Open the gas valve see ’ .1 Installation diagrams’Starting up and shutting down Shutting downShut the appliance down for a longer period Shut the appliance down for a brief period OFF modeDisconnect the appliance from the mains Starting up and shutting downAppliance’s heating cycle Appliance’s heating cycle12 Ignition Main menu Notational convention for menu-related instructionsSwitching into on mode Setting the water temperature Setting the water temperature via Setpoint MenuSetting water temperature during on mode Week programme Introduction Starting up and shutting down the week programChanging the appliance’s standard week program Remark Setting the switch-on time Setting switch-off timeExample Adding times to a week program Setting the water temperatureSetting program-controlled pump Week programmeDeleting times from a week program 20 Period added23 week program options Extra period Programming an extra periodSettings Setting menu languageSettings Setting day and time Displaying appliance specifications Remark46 Main menu Gis Service program Setting the hysteresisDisplaying the error history Service program Setting the pump on/offSetting the service interval Displaying the appliance historySetting the display scroll speed Setting the display contrastSetting the backlight time Setting the display contrastService program Troubleshooting General errorsDisplayed errors Troubleshooting table for general errors Symptom Cause Solution Remark Gas smell Gas leakSymptom Cause Solution Remark Display is off See appendix ’A.2 Electrical diagram BFC’Water leakage Insufficient or no hot Troubleshooting table for displayed errorsSymptom Cause Solution Remark Explosive ignition WaterS04 blocking error S02 blocking errorS03 blocking error S05 blocking errorS13 blocking error S14 blocking errorS15 blocking error Phase-sensitive. See ’3.10 Electrical connection’ F02 lock out errorAppliance specifications’ How to bleed air from the gas line, and measure the supply F08 lock out error F06 lock out errorF07 lock out error ’3.9 Air supply and flue gas discharge’Error F09 remains active in the event that the water F10 lock out errorRelease R.1.3 UK Release R.1.3 UK E03 blocking error C04 blocking errorE01 blocking error E04 blocking errorMaintenance frequency Determining service intervalMaintenance frequency Maintenance Remark Preparation for maintenanceStarting up Maintenance Cleaning the burner Descaling and cleaning the tankCleaning condensation water discharge Water-side mainte- nance Introduction12.4.3 Cleaning the orificeCleaning heat exchanger Remark Finalising mainte- nanceWarranty Certificate Warranty Certificate Appendices Week program cardElectrical diagram AppendicesWeek program card Release R.1.3 UK IX Index Index0306 IX Index