43
AGUADENS
COSMOGAS
6 - OPERATING
6.8 - Self-learning and
calibration of the minimum and
maximum capacity output
This water heater have a self-learning procedure to reach
the best water temperature tuning. In order to do this, the
water heater automatically calibrate the maximum and
minimum capacity based on the typical tappings.
Because at the first installation it is not known what’s the
typical tappings, for an immediate satisfactory temperature
tuning it is suggested to help the water heater in its self-
learning. Operate as follows:
1.- open a hot water faucet to the maximum flow;
2.- using button
, increase the value to the
maximum water temperature;
CAUTION!!! A domestic hot water temperature
exceeding 51°C can cause permanent damages to
persons, animals and objects. Children, the elderly
and disabled must be protected against the potential
risks of scalding, by introducing devices that limit the
temperature of use of domestic hot water to utilities.
3.- water heater should fire for at least five minutes, to its
maximum capacity or to the maximum capacity of the
system where it is installed
4.- now the maximum capacity is calibrated;
5 - enter installer menu (see procedure on section 7.8) and
set parameter 2010 to LOu
6.- now burner will fire at minimum capacity. Wait at least
five minutes;
7.- now the minimum capacity is calibrated;
8.- Turn OFF and ON the water heater (see section 7.10);
9.- close your hot water faucet;
10.- now water heater learned the first minimum and
maximum limit of this installation and it will correctly tune
the hot water temperature.
6.9 - Adjust the domestic
hot water flow rate
If the appliance is installed in a geographical area where
the temperature of the cold water is very low, the flow rate
of domestic hot water that passes inside the appliance may
have to be reduced. It is therefore good practice to perform
this adjustment:
1.- switch the appliance on;
2.- using the
and
keys, adjust the
temperature of the domestic hot water to 48 - 50°C;
3.- open the domestic hot water tap fully. In the case of a
single lever mixer, the position must be completely on
“HOT”;
4.- wait 3 minutes for the temperature to stabilise;
5 - if the water temperature is too cold, the flow rate
must be reduced via the selector “3” in figure 5-10 (or
something similar), until the desired temperature is
reached.
6.10 - Check the capacity input
The heater has a factory-set air/gas ratio. The pressure of
the gas at the burner is indirectly controlled by the blower.
The only way to check the heater capacity input is operating
directly on the gas meter. To do so proceed as follow:
1. turn the power switch (item “A” in Figure 7-1) to on;
2. gain access to the installer menù (see section 7.8) and
set parameter 2010 to HIGH. Now heater will run at high
fire for 20 minutes;
3. open a DHW faucet to the maximum flow;
4. measure the capacity input to the gas meter. This should
match with the value given in technical data section 9
header “Maximum heat input” with a tollerance of +/-
10%;
5. if the capacity input is too low, check:
a) that there are no obstructions in the combustion air
and/or vent system;
b) check that the flue and air intake lenght is below the
maximum specified in the technical data, section 9;
c) check that heat exchanger and burner are clean (see
section 8.4).
Summary of Contents for AGUADENS Series
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