16
Värmebaronen Vedolux -350, -450 and -650
The installation must be carried out
according to existing rules and standards
under the supervision of a qualified
electrician.
The boiler must be preceded by an all-pole
main breaker.
The boiler is protected with a maximum
10 A fuse.
The boiler is connected to the mains power
and a charging pump is connected to the
boiler. Necessary connections are made
with connectors on the rear of the boiler.
For the location of the components, see ‘Overview’.
The boiler temperature sensor and the max. temperature
sensor’s bulb are located inside the electronics box.
The electronics box and the sensors are accessible
when the front cover plate has been removed.
The O
2
probe and the flue gas temperature sensor are
accessible when the boiler’s rear cover plate has been
removed.
If the boiler is connected to an emergency
power unit, this must produce a pure sine
wave. Otherwise, the boiler’s electrical
components may be damaged.
a. O
2
probe
Terminal 1:
O
2
probe -, grey.
Terminal 2:
O
2
probe +, black.
Terminals 3 - 4:
probe heating, white.
Heating element
output:
12 V~ / 16 VA.
b. Temperature sensor
Terminals 1 - 2:
flue gas temperature sensor.
Terminals 3 - 4:
boiler temperature sensor.
Sensor type:
Pt100.
Measurement range: flue gas temperature sensor,
-4..+930°F.
boiler temperature sensor,
-4..+930°F.
R/T values:
T (°F)
32
68
212
392
R (
Ω
) 100.0 107.8 138.5 175.8
The temperature sensors are not polarised.
c. Air control actuator
Terminal 3:
power supply, 24 V~, black.
Terminal 4:
power supply, 24 V~, red.
Terminal 5:
secondary control signal, Y+, white.
Terminal 6:
primary control signal, Y+, white.
Control signal
output:
2 - 10 V= / max. 3 mA.
d. Charging pump
Connections with connectors on the rear of the boiler.
Charging pump output 115 V~ / max. 2.5 A.
On circuit board: Terminal 12: L, phase connection.
Terminal 13: N, neutral connection.
Terminal 14: PE, protective earth
connection.
e. Flue gas fan
Terminal 15:
L, phase connection.
Terminal 16:
N, neutral connection.
Terminal 18:
PE, protective earth connection.
Fan output
115 V~ / max. 2.5 A.
f. Mains connection
Connections with connectors on the rear of the boiler.
Voltage:
115 V~, 60 Hz.
On circuit board: L1: phase connection.
PE: protective earth connection.
N: neutral connection.
g. Fuse
Glass tube fuse: 5 x 20 mm / 6.3 quick-acting.
h. Max. temperature thermal relay
Max. temperature thermal relay (STB): 212 +0/-41°F.
Electrical connection