1. SAFETY INSTRUCTIONS 1.1 General information • Read the following safety instructions carefully before installing, maintaining or adjusting the buffer tank. • Personal injury or material damage may result if the product is not installed or used in the intended manner. •...
1.2 Safety instructions for users WARNING If a safety valve is fitted, the valve overflow should NOT be sealed or plugged. The product must NOT be modified or changed from its original state. Children must NOT play with the product or go near it without supervision. Maintenance/settings should only be carried out by persons over 18 years of age, with sufficient understanding CAUTION...
• Safety standard EN 60335-2-21 information. • Welding standard EN ISO 3834-2 The product complies with EU Directives for: OSO Hotwater AS is certified for • Low voltage LVD 2014/35/EU • Quality ISO 9001 • Electromagnetic compatibility EMC2014/30/EU • Environment ISO 14001 •...
3. INSTALLATION INSTRUCTIONS 3.1 Products covered by these instructions Maxi Accu Heat: Maxi Accu Cool: 800 1353 MA 600 800 1253 MA 600 800 1354 MA 1000 800 1254 MA 1000 800 1356 MA 2000 800 1256 MA 2000 800 1357 MA 3000 800 1257 MA 3000...
3.3.1 Delivery The product should be transported carefully as shown, with packaging. CAUTION Pipe stubs, valves etc. should not be used to lift the product as this could cause malfunctions. 3.4 Requirements for installation location and positioning CAUTION The product should be placed in a room with a drain, in accordance with the wetroom standard / latest TEK.
3.5 Pipe installation Approved pipes of the correct size should be used for installation. The relevant standards and regu- lations must be followed. Dimension Connection description 3/4” internal thread. Venting 2 DN 80 PN 6 2 x Return (600 l.) 2 DN 100 PN 6 2 x Return (1000 l.) 2 To order...
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3.5.4 Fitting instructions CAUTION The product should be placed in a room with a drain, in accordance with the wetroom standard / latest TEK. Alternatively, fit an automatic stop valve with sensor and overflow from safety valve to drain. The product should be properly aligned vertically and horizontally, on a floor suitable for the total weight of the product when in operation.
4. INITIAL COMMISSIONING 5. USER GUIDE 4.1 Filling with water 5.1 Settings First check that all pipes are connected correctly. The product does not require any special set- Then proceed as follows: tings. 6. TROUBLESHOOTING A) Open for venting at a point in the system higher than the top of the tank;...
7. WARRANTY CONDITIONS 1. Scope OSO Hotwater AS (“OSO”) warrants for 2 years from the date of should not be aggressive, i.e. the water chemistry must purchase, that the Product will: i) conform to OSO specification, comply with the following:...
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