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Gasifying boilers VIGAS
VIGAS 18 DPA, VIGAS 26 DPA
10.4.1 BASIC CONNECTION SCHEMAS
10.4.2 Connection schemas with EXPANDER AK4000E
Expander AK4000E
complements the AK4000 boiler control unit. It enables the possibility to control the central
heating system unit circuits, including regulating the supply water temperature, using different heating sources.
Use
of indoor thermostat and equithermic control (based on external temperature) or in combination, enables control of the
central heating.
Expander AK4000E
is supplied in sets. According to the particular schematic connection, it is
supplied as: basic set (order no. 5001), double set (order no. 5002) and triple set (order no. 5003). After verifying the
connection schemes of the Expander, service settings will be supplied with unit settings for the central heating system
and hot water supply.
(Detailed description given in EXPANDER AK4000E service guide).
Schema 4
is designed for manual control with 4-way valve. For boiler heating,
a combined tank is used. Both pumps must be connected to power board
AK4000. Contact T3 of power board AK4000S is used for connection of room
thermostat (see 20/B2 and 16.4.)
Recommendation: Connection without 3-way thermostatic valve does not
secure sufficiently water temperature to 60°C. In order to expand the
lifespan of boilers, it is recommended to use Scheme 0.
3x
Using buttons ▲
choose
required
schema and press
„ENTER“.
Schema 1 for (BS-3)
shall be used with accumulator tank. To protect from low-
temperature corosion, a three-way thermostatic valve ESBE is used (60°C).
Pump shall be connected to power board AK4000. Contact T3 of power board
AK4000S is used to connect KTY sensor, to monitor tank temperature.
Attention: It is not possible to connect room thermostat with Schema 1. I
tis recommended to control the room thermostat by pump.
Schema 2 for
(BS-2)
Scheme is the same as scheme 0. To control water
temperature for central heating, the 3-way mixing valve is used, which is
operated manually.
Attention: Combines water tank must be used together with 3-way mixing
valve.
Schema 3
to protect from low-temperature corosion, a three-way
thermostatic valve ESBE is used (60°C). Pump must be connected to
power board AK4000. Contact T3 of power board AK4000S is used for
connection of room thermostat (see 20/B2 and 16.4.)
Schema 0 for (basic schema/BS-1)
to protect from low-temperature corosion,
a three-way thermostatic valve ESBE is used (60°C). Water regulation for central
heating is secured by 4-way mixing valve with manual control. For boiler heating,
a combined tank is used. Both pumps must be connected to power board
AK4000. Contact T3 of power board AK4000S is used for connection of room
thermostat (see 20/B2 and 16.4.)
Atttention:
Recommended schema for VIGAS DPA.
Expander Basic set (code 5001)
Technical requirements for optional accessories:
(To specify parameters of the pump and mixing valve with
servomotor consult with technician specialist)!
1. Pump 230V/50 Hz.
2. Servounit 230V/50 Hz opening period 60 – 240 s.
3. Pump to be installed cca 0,5 m after 4-way valve.
4. Max. el. current for one Expander 3A.
5. Additional thermometer install cca 0,5 m after pump.
6. External thermometer install on the northern side of building.
7. Room thermostat (Potential free contact).
