ATC W10-u Installation And Operation Manual Download Page 8

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ATC Electrical & Mechanical, 

ATC House, Broomhill Drive, Tallaght, D24 EF99, Ireland

IE: 01 4678301, UK:0203 564 9164, Email [email protected]

opening the service valve, open the service valve until constant water flows from the hot 

outlet. Once water is flowing, close the hot water tap. Failure to carry out this step can 

crack the lining of the heater and result in leaks.

To start the heating cycle:

Make sure tank is full of water, otherwise damage to the water heater may occur.

For the 10 and 15 Litre heaters turn the switch on  and then follow the 5Ltr instruction 

below.

For the 5 Litre heater, turn the temperature adjustment knob clockwise to 3/4 maximum 

and the indicator light will come on to show the element is heating. The indicator light will 

remain on until the temperature setting has been reached, at which point the light will go off.  

When the temperature drops below the set point of the thermostat the indicator light 

will automatically come back on. This is a “pilot light” indicating the unit is in the heating 

process.

To Set the Temperature.

After the water heater has reached the set point outlined above check the water tempera-

ture 

 do not place hands directly under water outlet as there could be a risk of scalding.  

If it is necessary to adjust thermostat turn the dial clockwise to increase the temperature 

and anti-clockwise to decrease it. 

PERIODIC MAINTENANCE AND PARTS REPLACEMENT

Maintenance should only be carried out by a qualified service person. 

Note: For most of these operations the power supply should be turned off and the water 

will have to be drained from the heater.

Draining the Heater

1.  Isolate the power supply.

2.  Shut off water inlet valve.

3.  Remove water heater and invert over a sink to allow water to drain from tank safely.

Removing the Heating Element

1.  Turn off power supply and drain the heater (see previous section).

2.  Remove the cover screw and cover. 

3.  Disconnect electrical cables attached to element.

4.  Unscrew the heating element retaining nuts and remove compression bracket.

5.  Remove the element.

 

De-scaling the Heating Element

Scale deposits can dramatically affect the heating efficiency of the element. Heavy scale 

can even cause the element to burn out. The element can be descaled either chemically 

or manually:

1.  Remove heating element (see previous section)

2.  Soak the element in white vinegar or other descaling solution. Once descaled, rinse 

Summary of Contents for W10-u

Page 1: ...Ireland IE 01 4678301 UK 0203 564 9164 Email sales atc ie 1 ATC PACIFIC WATER HEATING INSTALLATION AND OPERATION MANUAL W5 u 5 Litre Undersink water heater W10 u 10 Litre Undersink water heater W15 u...

Page 2: ...examine and if necessary replace the anode rod at least once a year could cause the tank to fail and leak and void the warranty 8 Cable connection should be to a 13A double pole Switched Spur 9 This...

Page 3: ...nter 100 Thermostat Type Capillary type Thermostat Range C Min C Max 30 80 35 75 External Switch No Yes Heating Indicator LED Yes Installation location Undersink wall mounted or standing on rubber fee...

Page 4: ...the holes required always use screws that are suitable for the wall material and the weight of the heater otherwise the heater may pull the bracket off the wall Hang the water heater on the bracket Tu...

Page 5: ...dation must be made for the expanded water that will occur with each operating cycle Regulations permit expanded hot water to be accommodated within the supply pipe work provided that an expansion rel...

Page 6: ...in the pipework is not possible An expansion vessel must be used Cold in Hot out 5 10 or 15 Ltr Water heater CLOSED SYSTEM THERMAL EXPANSION There is a Pressure relief safety valve supplied with the...

Page 7: ...rs shall only switch on off the water heater provided that it has been installed in its intended normal operating position and they have been given instruction concerning use of the heater in a safe w...

Page 8: ...oint outlined above check the water tempera ture do not place hands directly under water outlet as there could be a risk of scalding If it is necessary to adjust thermostat turn the dial clockwise to...

Page 9: ...acidity alkalinity in the water supply To replace the Anode 1 Turn off the power supply and drain the heater see previous section 2 Remove heating element see previous section 3 Remove the spent anod...

Page 10: ...thermostat to desired setting Note a lower setting is more economical and reduces the risk of scalding CAUTION Call a technician if the high limit needs to be reset frequently 5 Litre Hi Level Reset...

Page 11: ...heater is not suitable for use on gravity fed systems Unit Leaking 1 Check water connection fittings at the top of tank ensure the connections to the water heater are sound and are not the cause of th...

Page 12: ...65 ERP RATING INFORMATION Waste Electrical Electronic Equipment Applicable in the European Union and other European countries with separate collection systems This marking shown on the product or its...

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