Use Of Boost Function; Use Of External Controlled Lowering Of Hot Water Production; Maintenance; Maintenance Of The Anode - SWISSTHERM VT167 OHE Bedienungs Und Installationsanleitung Handbuch

USE OF BOOST FUNCTION

With the use of the boost function you are able to make hot water faster than in normal production. This function could be
used if you are in urgent need of hot water. To activate the function choose the menu "Boost" and "on".
When it is activated the supplementary heating and heat pump will be activated and start heating up the water until it
reached "Tmax" or have been running for 1 hour and then deactivate. If you need more you must activate the boost
function again.

USE OF EXTERNAL CONTROLLED LOWERING OF HOT WATER PRODUCTION

With this function you are able to connect an external switch or a timer to lowering the hot water production. An example
could be that you want to lower the temperature at night time when you sleep and in the morning there will be hot water
production again. This could be controlled by an external timer/clock.
Important!
Connect external on/off button or a timer to terminal CN5 connector 5 and 6 to make sure you do not cut the power to the
heat pump but only this function. "See page 10 for electrical diagram".
Please note that the external switch or timer must have gold contacts due to low current and potential free contacts. When
you close the switch it will activate the lowering temperature function to frost free environment and when you open the
switch it will deactivate the function.
When this function is activated the hot water production will stop until it reaches "T2 min". As standard it will lower to
10°C for keeping the system in a frost free environment. When the temperature goes below "T2 min" -1°C the
supplementary heating will start. If the temperature goes further below "T2 min" -3°C the heat pump will also start. When
the temperature reaches "T2 min" +1°C the hot water production stops.

MAINTENANCE

MAINTENANCE OF THE ANODE:

The hot-water tank is enamelled inside in order to protect it against corrosion. In the layer of enamel there are some small
pores etc., which are not covered by enamel. In order to avoid corrosion completely an anode is mounted in the middle of
the hot-water tank to protect these spots. To inspect the anode the front door must be removed. The anode is situated
behind the front plate. It must be examined once a year and replaced when the diameter has reached 6-10 mm. The tank of
the heat pump is emptied by turning off the cold water supply and then turning on the drain cock, which must be mounted
on the cold water inlet of the heat pump. At the same time a hot-water tap is turned on to avoid negative pressure inside
the tank.

MAINTENANCE OF THE EVAPORATOR:

Examine the evaporator, and if necessary remove dust and dirt, once or twice a year. To inspect the evaporator, remove
the air grating/duct connections. Dust particles can obstruct the air circulation, and this will reduce the heat pump capacity
considerably. Clean the evaporator with water and a brush. Be careful and avoid damaging the fins of the evaporator and
keeping the water away from the electrical parts. If the heat pump sucks in the air from a cooker hood, take care that the
fat and oil etc. in the air do not get the possibility of settling on the evaporator thus causing added risk of fouling the
evaporator. A filter should always be mounted, so that it can easily be removed for replacement/cleaning.
A drawer filter for mounting in the duct system could be used.
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