A.O. Smith EQB 155 G - Manual

Page 4 - GENERAL; for pipes exceeding 19 mm. but not

4 1. GENERAL 1.1 Description of theappliance Construction of the water heater is inaccordance with the Europeanstandard for gas heated water storageheaters for sanitary application (EN 89).The appliance thus meets the EuropeanDirectory for Gas Appliances and istherefore entitled to carry the CE-mark...

Page 6 - device

6 1.2 Technical safetyequipment 1.2.1 Gas control valve The water heater has been fitted with agas control block consisting of athermo-electrical pilot flame safeguard,pilot flame pressure regulator, burnerpressure regulator, a control thermostat(adjustable between 40°C and 80°C)and a safety thermos...

Page 8 - Technical description; D i m e n s i o n s; Cold water inlet

8 1.3 Technical description 1.3.1 Dimensions These water heaters are only suitablefor a flue tube with minimal theannounced diameter (dimension G). D i m e n s i o n s EQB 115 EQB 155 EQB 200 A 1280 1370 1670 B 1120 1210 1540 D 465 515 515 F 545 595 605 G 80 80 100 K 325 325 380 L 270 295 395 M 1180...

Page 9 - Figure 3 - Dimensions

Page 10 - Technical data

10 GENERAL Storage capacity litres 109 144 181 Water connections ** - 3 / 4 " - 14 NPT 3 / 4 " - 14 NPT 3 / 4 " - 14 NPT Gas connection - ISO 7 / 1 Rp 1 / 2 ISO 7 / 1 Rp 1 / 2 ISO 7 / 1 Rp 1 / 2 Drain valve - 3 / 4 " - 14 NPT 3 / 4 " - 14 NPT 3 / 4 " - 14 NPT Anode - 3 / 4 &#...

Page 11 - FOR THE INSTALLER; Installation instructions; This water heater must; be installed; not; be installed in

11 2. FOR THE INSTALLER 2.1 Installation instructions This water heater must be fitted in alocation which will permit the provisionof an approved flue system andadequate ventilation. A service clearance of 15 cm at thesides and rear of the unit and 60 cm atthe front of the unit should be allowedfor ...

Page 14 - Commissioning

14 2.2 Commissioning 2.2.1 Filling the water heater 1. Close the drain tap.2. Open the cold water tap to the water heater and open all taps where hotwater can be drained for de-aeration. The water heater is filledas soon as cold water flows from alltaps. 3. Close all hot water taps. 2.2.2 Putting in...

Page 15 - the inner door; Pilot adjustment

15 2.2.3 Removing and replacing the inner door (only for the EQB 115 and EQB 155models, see Figure 7a).Procedure:1. Place lip A through the recess on the right and subsequently slide it downbehind the steel wall. See to it thatboth lower lips remain in front of themetal wall. 2. Press lip B through ...

Page 16 - Temperature regulation; Figure 8 - Setting the pilot

16 recommended to also close the coldwater tap and to drain the applianceafter cooling (open the drain tap; it ispossible to connect a drain hose tothe drain tap; open the nearest hotwater drain point to prevent airlocks).To be able to drain the appliancecompletely it should be disconnectedand tilte...

Page 18 - ‘no pr’; Unit

18 G20 G30 G31 Inlet pressure mbar 20 30 37 Burner pressure mbar 10.5 30 37 Diameter main injector mm 3.50 1.95 1.95 Diameter pilot injector mm 2x0.27 0.22 0.22 G20 G30 G31 G20 G30 G31 Inlet pressure mbar 20 30 37 20 30 37 Burner pressure mbar 12.5 30 37 12.5 30 37 Diameter main injector mm 2.35 1.4...

Page 19 - Maintenance

19 2.8.1 Sacrificial anode The life cycle of the anode is determinedby the quality and the quantity of thewater flowing through the apparatus. Itis therefore recommended that theanode be inspected and replaced ifnecessary at least once a year. 1. Close the stop cock in the cold water supply pipe, 2....

Page 20 - waterside surfaces; Inlet combination

20 2.8.2 Cleaning 1. Close the gas supply and demount the burner after it has cooled down, 2. Disconnect the burner, pilot pipe and thermo couple from the gas controlblock (see Figure 11), 3. Remove the complete burner assembly, 4. Clean the burner with a soft brush.5. Check the pilot burner and cle...

Page 21 - Fault finding; Gas smell; Warning; Condensation

21 2.10 Fault finding In case of failure the following shouldbe checked. 2.10.1 Safety thermostat All appliances have been fitted with asafety thermostat that shuts off the gassupply when the water temperature istoo high. The safety thermostat remainsactivated until the water temperaturedrops below ...

Page 22 - FOR THE USER

22 3. FOR THE USER 3.1 Commissioning Warning Installing and commissioning (for thefirst time) of this water heater shouldonly be carried out by a qualifiedcompetent heating engineer. 3.1.1 Filling the water heater 1. Close the drain tap.2. Open the cold water tap to the water heater and open all tap...

Page 23 - We recommend

23 and tilted slightly in the direction ofthe drain tap. 3.1.5 Maintenance The inlet combination has to be testedregularly by relieving it (via the reliefbutton). The water has to flow out in aforceful jet. Check whether thedischarge pipe is open. We recommend a service agreement on an annualbasis. ...

Page 25 - Turn the control button to the (

Fault Possible cause Corrective action Insufficienthot water, ornone at all Waterleakage Set the temperature regulator at alower temperature and reignite thepilot burner. Reduce the consumption of hot water.Allow the appliance time to heat thew a t e r . Turn the control button to the ( l ) position...

Page 26 - GUARANTEE; Guarantee in general

26 4. GUARANTEE The following conditions form theguarantee agreement between A.O.Smith Water Products Company (thewarrantor) and the owner of the waterheater. 4.1 Guarantee in general If within one year of the originalinstallation date of the water heaterany part or component other than thetank shal...

Page 28 - I m p o r t a n t

28 MODEL: ......................................................................................................................... SERIAL NUMBER: ......................................................................................................... ORIGINAL DATE OF INSTALLATION: ...................

A.O. Smith EQB 155 G - Manual

Table of Contents:

Summary

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