20
ENG
Code Part I, CSA C22.1, Electrical Code. If
you must replace the electric power cable
supplied with the boiler, order it exclusively
from Sime.
The power supply must be single-phase 120
V-60 Hz througth a main switch protected by
a fuse with a distance of a least 3 mm (0.118
inch) between contacts.
NOTE: The boiler must be connected with an
efficient grounding system. SIME shall not
be held liable for injury or damage resulting
from failure to ground the boiler.
2.9.1 Electrical panel (fig. 12)
Before performing any kind of operation,
disconnect the unit by unpluging the power
cord.
Placing the boiler selector in position “OFF”
does not disconnect the electric board from
the power supply.
Caution: Label all wires prior to disconnec-
ting wires when servicing control. Wiring
errors can cause improper and dangerous
operation.
After connecting all wires, verify proper ope-
ration after servicing.
Remove the three screws (9) locking the con-
trol panel in place and pull the panel forward
until it can be tilted downward.
To access the components of the electrical
panel, unscrew the four screws holding the
protective guard in place (6).
2.9.2 Room stat connection (fig. 12)
To gain access to connector “TA”, remove
the control panel cover (7) and connect the
room stat to the terminals 15-16 after having
removed the jumper.
The thermostat or timer-thermostat,
recommended for better room temperature
control, must be dry contact.
8
125
4
67
9
Figure 12
KEY
1 Tridicator
2 Time programmer seet (optional cod. 8092214)
4 Main PCB
5 Earth ground
6 Control panel protection
7 Cover (TA)
8 Connector (TA)
9 Fixing screw
ATTENTION: After having removed
the three screws, slide the panel
outward to tilt it downward
.
IMPORTANT: Before perfor-
ming any kind of operation,
disconnect the unit from the
power supply using the bipo-
lar switch of the plant. Placing
the boiler selector in position
“OFF” does not disconnect the
electric board from the power
supply.
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