Biasi 125DI, Инструкция по установке и обслуживанию

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unvented hot water cylinders
installation and maintenance instructions
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SAFETY VALVE CHECKS
Any sign of water coming from either the expansion relief valve or the temperature/pressure relief valve during heat ‐ up
indicates a problem. Next hold both of these safety valves fully open, allowing as much water as possible to flow through the
tundish. Check that your discharge pipework is free from debris and is carrying the water away to waste efficiently. Release the
valves and check that they reseat properly.
SERVICING
GENERAL
Servicing should only be carried out by competent installers and any spare parts used must be purchased from BIASI Cylinders.
NEVER bypass any safety devices or operate the unit without them being fully operational.
DRAINING
Switch the electrical power off (important to avoid damage to element). Isolate boiler from the unit. Turn off the cold water
supply valve. Open hot water tap. Open the drain valve. The unit will drain.
WARNING: WATER DRAINED OFF MAY BE VERY HOT!
ANNUAL MAINTENANCE
The water heaters require annual servicing in order to ensure safe working and optimum performance. It is essential that the
following checks are performed by a competent installer on an annual basis. This is commonly done at the same time as the
annual boiler service.
1) Twist the cap of the expansion relief valve on the inlet control set and allow water to flow for 5 seconds. Release and
make sure it resets correctly. Repeat with the pressure / temperature relief valve. In both cases check that the
discharge pipework is carrying the water away adequately. If not, check for blockages etc. and clear.
WARNING: THE WATER DISCHARGED MAY BE VERY HOT!
2) Check that any immersion heaters fi tted are working correctly and that they are controlling the water at a
temperature between 55°C and 65°C.
3) Check the pressure in the expansion vessel is charged to 3 bar. Turn off the water supply to the unit and open a hot
tap fi rst. The air valve on expansion vessel is a Schrader (car tyre) type. Air or CO2 may be used to charge the expansion
vessel.
4) Unscrew the head on the inlet control set and clean the mesh filter within.
5) The Benchmark Log Book supplied with this unit should be updated at each service.
YOUR GUARANTEE MAY BE VOID WITHOUT PROOF OF ANNUAL SERVICING
SPARE PARTS
A full range of spare parts is available.