Placement And Plumbing Of The Unit; Maintenance; Cleaning The Resistance Of Boiler Scale - VESTEL TRV 50 Service Manual

4.1 MOUNTING AND PLUMBING OF THE UNIT
The following should be considered when mounting the thermosiphon to the wall.
• Thermosiphon must be in a location to meet the water connection point on the wall.
• The inserts and hanging screws attached to the wall must be strong enough. An 80-liter
thermosiphon can exceed 100kgs with its own weight. As this weight shall entirely rest on
the hanger screws, the screws must be screwed strong enough not to come off the wall.
• After hanging, the thermosiphon is adjusted to be parallel to the wall by the adjustment
plastic on the lower side.
• The device must not have any damage that will adversely affect electrical insulation.
• The power feed cable of device must be connected to the circuit breaker provided with the
device.
• Safety valve must definitely be mounted on the cold water inlet pipe with the blue ring.
• There are flexible gaskets on the fittings of the water connection hoses. Water tightness is
achieved without tightening the fittings too much. Fittings and gaskets might be damaged in
case to too much tightening. In case the hose lengths are not enough, only hoses of different
length recommended by Vestel Service Centre must be used.
• Thermosiphon must be mounted on a location where the water inside won't freeze.

5. MAINTENANCE

5.1. RESISTANCE CORROSION BY THE TANK
Boiler scale (calcification) can cause the following operation problems:
• Decrease in usable hot water volume
• Increase in resistance malfunction risk
• Thermosiphon making noise during heating
• Thermostat activating and deactivating frequently
Thus, thermosiphon must be cleaned in a frequency depending on the water quality and product use.
The recommended cleaning period is at least once every two years.
The operation:
1. Cut the power off before cleaning the thermosiphon.
2. Shut the valve to cut off the water into the device.
3. Open the hot water faucet to remove the pressure in the tank and then close it.
4. Cut off the water main connections of the inlet pipe.
5. Remove the safety valve and attach a rubber hose of appropriate length for discharge instead.
6. Open the hot water faucet to drain the remaining water inside the thermosiphon.
7. Remove the screws that fix the flange (that the resistance is connected to).
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