Initial Start−Up And Maintenance; Implementation; H Checking Connections; H Checking Safety Equipment - Viessmann EHO Service Instructions Manual

Initial start−up and maintenance

Implementation

M
aintenance
I M
nitial start−up aintenance
I M
nitial start−up aintenance
4
For commissioning the electric immersion heater EHO, see also the
operating instructions.
¨ Safety instructions
The electric immersion heater EHO may only be taken into use after the DHW
cylinder has been properly filled and is under operating pressure.
Only open the heating water connections after the DHW cylinder has been
de−pressurised.
Only drain the DHW cylinder with a vacuum pump when the air vent valve is
open.
1. System shutdown
Isolate the mains electricity supply
and safeguard against unauthorised
reconnection.
2. Checking connections
Check the compression fittings for
leaks and tighten if necessary.
3. Checking all safety equipment
Check the function of safety valves
according to manufacturer's
instructions.