4.1.1 Temperature setting
Use the temperature control knob to set the
temperature:
•
Position 1 = approximately 40°C
•
Position 2 = approximately 50°C
•
Position 3 = approximately 60°C
•
Position 4 = approximately 70°C
•
Position 5 = approximately 80°C
Caution
Preferably turn the temperature control knob in
position 3. Harmful scaling and lime build-up
will be higher when using position 5. At lower
temperature settings there is a higher risk of
high legionella concentrations in the water.
When the water temperature reaches 90 °C, the
safety thermostat cuts off the gas supply
completely and the pilot flame goes out.
4.2 Turn off the water
heater
4.2.1 Turn off for a short
period
To turn off the water heater for less than 2
months, set the water heater in the OFF mode
(see 3.2.1.1).
Note
If the water heater stays in the OFF mode for
more than 2 months and no water is drained,
air bubbles may be formed in the water heater.
This can lead to air in the water pipes.
4.2.2 Turn off for a long period
When the water heater needs to be turned off for
more than 2 months, contact your service and
maintenance engineer to decommission the
water heater.
5 Introduction
5.1 About the water heater
The BTL water heater is intended for heating
water for sanitary purposes.
The BTL is a gas–fired storage water heater. The
flue gasses transfer their heat to the water
c
n
through an heat exchanger. The water heater has
an open flue gas discharge connection.
5.2 Working principle
Cold water enters the tank through the water
inlet (1). When the water temperature drops
beneath the set temperature, the gas supply to
the main burners is opened automatically and
the water is heated. A heat exchanger (3)
transfers the heat from the flue gasses to the
water and the hot water leaves the tank through
the water outlet (2).
The tank of the water heater has to be
completely filled during operation. The tank at
least must remain under mains water supply
pressure at any time. Fresh cold water is
immediately added when hot water is drawn
from the water heater. A temperature sensor
measures the water temperature.
Fig. BTL water heater
1
2
3
1. Water outlet
2. Water inlet
3. Heat exchanger
0313126_BTL_UKUK_V1.1, 30-11-2018
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Содержание BTL 100
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