background image

13

!

 WARNING

Constant voltage present in the junction box. Be-

fore any electrical work is done, the power supply 

must be disconnected and secured against activa-

tion while the work is in progress.

5.2 Maintenance

5.1 Settings

5.1.1  Thermostat setting
The thermostat on the product is adjustable from 
40-70°C. The thermostat should not be set lower 
than 60°C to prevent bacteria growth. To adjust 
the temperature:
A) Disconnect the power supply.
B)  Dismantle the electrical cover on the heater by

removing the insulation cap (see section 3.3.4) 
and then unscrew the cover with a suitable tool.

C)  Adjust the temperature on the thermostat (7)

with a screwdriver.

Fit electrical cover and insulation before the power 
supply is connected. 

5. USER GUIDE

MAINTENANCE INSTRUCTIONS

!

Maintenance shall be carried out by persons over 18 years of age, with sufficient 

understanding.

!

Annual inspection of safety valve:

- Open valve for 1 min. by turning the knob (2) approx. 90 degrees to the open 

position.

- Visually check that the water is flowing freely to the drain.

- YES = OK. Close the valve by turning the knob (2) a further 90 degrees to the 

closed position.

- NO = NOT OK. Disconnect power supply / shut off water supply. Contact in-

staller.

2

RESET

RES

ET

M2

1

2

3

4

THERM-O-DISC

40°C

70°C

60°C

50°C

1

2

7

6

!

 WARNING

Changing the temperature setting on the ther-

mostat will change the temperature of the wa-

ter at the tap, and may carry a risk of scalding. 

Where necessary, a mixer valve should be fitted 

(not included).

5.1.2  Resetting the safety thermostat
The safety thermostat on the product cuts out 
when there is a risk of overheating. This is reset by 
removing the cover (see 5.1 A and B) and pressing 
the red ‘RESET’ button (6). If the thermostat cuts 
out repeatedly, contact the installer. 

Summary of Contents for 800 0051

Page 1: ...ed by OSO Hotwater AS Industriveien 1 3300 Hokksund Norway Tel 47 32 25 00 00 Fax 47 32 25 00 90 E mail oso oso no www osohotwater com Nano N 5 l EN SAFETY INFORMATION O M INFORMATION INSTALLATION MAN...

Page 2: ...Included in delivery 6 3 3 Product dimensions 6 3 4 Requirements for installation location 7 3 5 Pipe installation 8 3 6 Electrical installation 10 4 Initial commissioning 12 4 1 Filling with water 1...

Page 3: ...y are accessible for fu ture reference The manufacturer assumes compliance by the end user with the safety oper ating and maintenance instructions sup plied and by the installer with the fitting manua...

Page 4: ...d or changed from its original state Fitting an external control unit managing the power supply to the product is NOT allowed without approval from the manufacturer Children must NOT play with the pro...

Page 5: ...2016 and EN 60335 2 21 as well as other useful data See Declaration of Conformity at www osohotwater co uk for more information OSO products are designed and manufactured in accordance with Pressure v...

Page 6: ...x with screw holes for wall fittiing are now accessible Fitting the insulation cap 1 Press the front piece into the fasteners 2 Press the two end pieces into place Ensure that the locking mechanisms s...

Page 7: ...The Nano is attached to the wall with the sup plied fastening metal band V see illustration The metal band is bent placed around the mid dle of the tank and fixed to the wall through the holes in the...

Page 8: ...size to the connections tighten according to table 3 5 3 For larger pipe sizes a reducer can be used C The safety valve supplied 3 must be fitted to the incoming CW supply pipe D Any overflow pipe 5...

Page 9: ...frost free with a fall to the drain CAUTION Fixed electric fittings shall be used for installation in new homes or when changing an existing electrical setup in accordance with regulations The produc...

Page 10: ...an then be connected to a 10A fuse Must be per formed by an authorized electrician 3 6 Electrical installation 3 6 1 Electrical components Component Note Safety thermostat 85 C thermal cut out Work th...

Page 11: ...r rating is 230V x 3kW All internal wiring is factory fitted 3 6 5 Installation instructions 3 6 6 Fitting recommendation WARNING Fitting an external control unit managing the power supply to the prod...

Page 12: ...LLER MUST Brief the end user on safety and maintenance instructions Brief the end user on settings and emptying the product Hand this installation manual over to the end user Enter contact details on...

Page 13: ...all be carried out by persons over 18 years of age with sufficient understanding Annual inspection of safety valve Open valve for 1 min by turning the knob 2 approx 90 degrees to the open position Vis...

Page 14: ...ic sup ply b unscrew the cover c visually check whether there is a leak from the heating element If so replace the gasket heating element Contact auth installer No hot water Power supply interrupted V...

Page 15: ...stic mains water supply in compliance with the European Drinking Water Directive EN 98 83 EC or latest version The water should not be aggressive i e the water chemistry shall comply with the followin...

Page 16: ...l 47 32 25 00 00 oso oso no www osohotwater com This installation manual and all its content is protected by copyright and may be reproduced or distributed only with written consent from the manufactu...

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