TANGRA HP 30 Installation And Operation Manual - page 19
User manual TANGRA HP30 - Rev. 04 - 2014-03-28
19
If the boiler shall work without modulation, set the same values for parameter 1 and
AUTO.
8.4 Set the temperature in the boiler
•
From menu Temperature set the water temperature in the boiler. When the boiler
reaches this temperature, it will turn automatically in modulation mode and after 5
о
С
will
turn off.
Example: set 65
о
С
water temperature, the boiler will slowly decrease its capacity and
when it reaches 70
о
С
turn off.
•
Automatic start up - when the boiler reached the temperature (cooling of the water in the
boiler) to
Т
water=
Т
set – Parameter 50, the boiler will start automatically the ignition
procedure.
Example: if set temperature is
Т
set
=65
о
С
, and parameter 50=10
о
С
, the boiler will start
automatically the ignition if temperature
Т
1=55
о
С
8.5 Initial start up of the boiler
•
When we are sure, that all connections are correctly installed, the quantity of fuel for the
lowest and highest capacity are checked and there is enough draught in the chimney, we
can start the boiler from on/off button.
•
From menu Power, set Auto.
•
When the boiler starts, the control light, placed next to the start button, blinking. That
means that the boiler is in ignition mode.
•
When appeared a stable flame (3-10min), the boiler turn into working mode and the lamp
light up permanently.
The boiler works at maximum capacity until it reaches the maximum set temperature (
Т
given
),
after that it starts modulating the capacity from the upper to the lower capacity and it stops when
reaching
Т
given
+5°C.
8.6 Setting of the burning process
Mandatory setting of the burning process with gas analyzer, measuring CO, O
2
,
ʎ
and the
temperature of the flue gases.
Measuring the parameters of the flue gases is done after the water temperature reached at
least 50°C and the boiler is not in modulation, is start or stop mode.
Achieving optimal burning is done by changing the fresh air quantity, using parameter 28 (air
quanity at maximum capacity) and 24 (air quantity at minimum capacity). Recommended values
for parameters 28 and 24 are given in 13.5 Parameters of the controller
Recommanded readings of the gas analyser:
СО
–
≤
100 ppm; O
2
≤
4-8%;
λ
= 1.3 – 1.6; T
flue gases
≤
180
о
С
.
8.7 Measure the draught in the chimney
When the boiler is not working, measure with suitable device (gas analyzer, differential
manometer) the draught at the end of the chimney, using probe M12. The draught should not be
less than 15 Pa. The operation of the boiler with less draught than 15Pa could lead to
overheating or fire in the burner.