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Technical manual
Bio-Tec
Technical manual
Bio-Tec
Connection to the open central heating system
Connection to the closed central heating system
5.2.
CONNECTION TO THE CLOSED CENTRAL HEATING SYSTEM
build in certified safety valve with opening pressure of 2,5 bar, minimum seat
diameter of 15 mm, minimum inlet connection of 1/2", minimum exit connection of
3/4" and a membrane expansion vessel. Safety valve and expansion vessel must
be built in accordance with professional rules and any valve must not be located
between safety valve and expansion vessel and boiler.
The closed heating system
must have the installed expansion
vessel
of larger volume (
vessel
volume must be
approx. 10% of the installation volume).
In all boiler types the heating pump
must
be
connected to boiler regulation so that the heating pump switching on and off
would depend on water temperature in the boiler.
In closed heating system (as in example shown in Scheme 2) it is
obligatory
to
regulation is shown in Technical manual ''Digital boiler regulation Bio-Tec''.
The functioning of boiler
- After the regulation starts to display the lack of fuel , the fuel should be
refilled (if it is necessary to continue the heating process)-BEFORE REFILLING,
press START button ones.
FUEL REFILLING PHASE:
- open the upper boiler door (see Image 7)
- align glow with poker
- insert fuel (recommended to fill the full upper combustion chamber) (see Image 8)
- close the upper boiler door (see Image 7)
-press button START for second time. (see Point 7.0)
NOTE:
- During the process of refilling the fuel the main switch of the boiler has to be
turned on. When the firing proces is
over
we can turn off the main switch, but first
it is necessary, after the indication ''FUEL'' is turned on, to wait that the boiler
cool down under 65°C and the glow disappear in combustion chamber (see point
7.0.).
Boiler start up
Upper boiler door
Middle boiler door
Lower boiler door
Image 7.
- Door opening method
PROCESS THE OPENING OF
BOILER DOOR:
-
Upper boiler door
- allowed to open only in ignition phase, fuel charging phase
and the phase of cleaning of boiler and boiler parts.
Of durig the opening door is necessary ajar, that leave them for few second so that
the fan intake smoke trough bypass, and then fully open.
-
Middle boiler door
- allowed to open only in ignition phase and the phase of
cleaning of boiler and boiler parts.
-
Lower boiler door
- allowed to open only in the phase of cleaning of boiler and
boiler parts.
LEGEND:
1
2
5
3
7
T
T
T
T
10
11
9
8
6
4
Scheme 1.
- Open central heating system with 1 water accumulator
1 - Boiler Bio-Tec
2 - "CAS" water accumulator
3 - 3-way thermic valve (m
aintains minimum temperature
of return water into the boiler above 60°C
), VTC 531
(m
aintains minimum temperature of return water into
the boiler above 60°C
), LTC 141 (m
aintains minimum
temperature of return water into the boiler above 60°C
)
or Laddomat 21 (m
aintains minimum temperature
of return water into the boiler above
63°C)
4 - Manual 3-way mixing valve
5 - Room thermostat (included into basic delivery)
6 - Heating circuit
7 - Open expansion vessel OPC (enough above
the level of the highest radiator, approx. 7% of the
total volume of installation)
8 - Sanitary water accumulator
(SKB-Digi/LKB-Digi/TB/STEB)
9 - Pump 1 - boiler pump
10 - Pump 2 - heating pump
11 - Pump 3 - hot sanitary water pump
"
"
above the
highest heating
body