A.O. Smith EQH 200 G - Manuals

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 &#...

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 ...

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...

15 2.2.3 Removing and replacing the inner door (only for the EQ 115/155 models, seeFigure 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 the reces...

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...

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...

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....

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...

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 ...

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...

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...

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...

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