A.O. Smith AHD 290 - Manual (Page 45)

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2. Before Installation /
Placement into
service
Deliverance
Heat pump including controller
Installation manual with technical data
User manual for controller
2.1 Important safety instructions
In the design and implementation of the heat pump, all relevant EU
guidelines have been adhered to.
Work on the heat pump may only be performed by trained
personnel! Take all necessary precautions in order to avoid
accidents while working!
2.1.1 Cooling system – safety instructions
The trained repairman must see to it that parts containing the refrigerant are
emptied to a level at which the execution of the work can occur in a responsible
manner without any dangers, before the commencement of repairs and service
work.
When repairing and servicing the heat pump with the refrigerant system opened,
and particularly for work with an open flame (soldering, welding, etc.), precau-
tions must be taken to prevent fires from starting.
2.1.2 Electrical circuit – safety instructions
When working on the heat pump, the main supply must
always be disconnected – pull the plug out!
When connecting the heat pump to the power supply, the local and national rules
and norms must be adhered to. In addition, regard must be paid to possible re-
quirements posed by the energy supplier.
2.1.3 Water circuit – safety instructions
Only drinking water quality water may be used. During installation, regard must
be paid to the choice of materials and it must be ensured that they can work
together without problems in the entire circuit.
Special attention must be paid when using galvanized
components and components containing aluminum!
Safety equipment must be installed to prevent over pressure in the
system.
All pipe work must comply with water safety regulations.
2.2 Delivery
The heat pump is delivered without water, condense water tube and the safety
equipment for the water circuit.