VIGAS 100 Lambda Control - Connection Schemes with Expander AK4000 E

20
Gasifying boiler Vigas
13.4.2 CONNECTION SCHEMES WITH EXPANDER AK4000E
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.
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 us
ed, 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 5
used with one heating circuit for floor or radiator. Central heating
temperature can be controlled according to external temperature, room
thermostat or by combi
nation of both. The boiler pump and central heating pump
are controlled separately. Boiler protection against low-
temperature corrosion
provides 4-way valve with servounit.
Use: Expander basic set (code 5001).
Schema 6
with two separate heating circuits controlled by servounit.
Option to
choose floor or radiator heating or combination. Central heating temperature can
be controlled according to external temperature, room thermostat or with
combination of both. The boiler pump and central heating pump work
separately.
Boiler protection against low-temperature corrosion provides 3-
way thermostatic
valve (60°C).
Use: Expander double set (code 5002).
Schema 7 for (Basic scheme expander (BSE 1)
used with one heating circuit
controlled by servounit for floor o
r radiator heating. Heating of domestic water
supply is controlled by pump. Temperature of central heating is controlled by
external temperature, room thermostat or by combination of both. Boiler
protection against low-temperature corrosion provides 4-way mixing valve.
Use: Expander basic set (code 5001)
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 i
s
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).
Technical requirements for additional accessories:
(To specify type, pump diameter and servo-unit consult with boiler specialist)!
1. Pump 230V/50 Hz.
2. Servo-unit 230V/50 Hz opening period 60–240 secs
3. Pump to be installed circa 0,5 m after 4-way valve.
4. Maximum electrical current for one EXPANDER is 3Amps.
5. Additional thermometer to be installed circa 0,5 m after pump.
6. External thermometer to be installed on the nothern side of building
7. Indoor thermostat - free of voltage.
Expander Basic set (order no. 5001)