Making the electrical connections
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57
6 720 643 068 (2011/06)
Copyright (optional information)
6.4
Connecting the LWCO device
B
Punch a hole (maximum diameter 3/16" (5 mm))
through the fan cable grommet (steps 1 – 3) and run
the LWCO cable through it.
Fig. 51 Punch a hole in fan cable grommet for LWCO cable
B
Install a 24VAC 20VA transformer near the boiler.
B
Follow LWCO manufacturer’s instructions.
B
Connect the lead labeled BOILER GROUND (green) to
pin 2 (center,
Æ
Fig. 49 [2]) of the white plug in the
boiler junction box.
B
Connect the leads labeled 24V HOT (red) and 24V
COMMON (white) to the external 24VAC transformer.
B
Connect the leads labeled SWITCH CONTACT (yellow)
to the TB1 temperature guard (
Æ
Fig 40, page 54) on
the Heatronic.
Fig. 52 Wires of a LWCO device with LWCO adapter
1
LWCO device (Hydrolevel Safgard 1100)
2
BOILER GROUND (green)
3
SWITCH CONTACT (yellow)
4
SWITCH CONTACT (yellow)
5
24V HOT (red)
6
24V COMMON (white)
NOTICE:
System damage or malfunction!
B
Ensure the air box remains air-tight when
routing the LWCO cable to the outside.
B
Do not route the LWCO cable through the
ignition cable grommet as appliance
malfunction may occur.
6 720 641 933-87.1O
Ø ≤ 3/16"
(~ 5 mm)
1
2
3
2
3
4
5
6
1
6 720 641 933-67.1O