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Electrical installer
Installation, use and maintenance manual – K18 Simplygas
31
4
covered by caps.
4. Insert cables through cable gland.
5. Identify the appropriate connection terminals.
6. Make the connections.
7. Replace the lower front panel.
4.3
ELECTRICAL POWER SUPPLY
4.3.1
Power supply line
Provide (by the installer) a protected single phase line (230 V 1-N
50 Hz) with:
▶
1 three-pole cable type FG7(O)R 3Gx1,5
▶
1 4 A magnetothermic breaker with differential protection
The switches must also provide disconnector capability,
with min contact opening 4 mm.
How to connect the power supply
To connect the three-pole power supply cable (Figure
4.2
1. Access the connection terminal block according to Procedure
2. Connect the three wires to the terminal block (TER) as shown
in Figure 4.2
3. Provide the earth lead-in wire longer than live ones (last to
be torn in the event of accidental pulling).
Figure 4.2
Appliance connection to the mains power supply (230V 1N
- 50 Hz)
L
Phase
N
Neutral
Components NOT SUPPLIED:
GS 4A magnetothermic breaker with differential protection
4.4
CONTROL SYSTEM
4.4.1
Space heating control systems
Three separate control systems are provided, each with specific
features, components and diagrams:
▶
OQLT021 system controller (optional)
▶
OCDS007 ambient chronothermostat (optional)
▶
External request
4.4.1.1
OQLT021 system controller (optional)
See also Paragraph 1.7.1.1
How to connect the OQLT021 system controller
Connection of OQLT021 system controller is made on
the wiring terminal block located in the electrical panel
inside the appliance.
1. Access the electrical board of the appliance according to
the Procedure 4.2
2. Refer to the OQLT021 controller Installation manual for
the actual wiring instructions.
4.4.1.2
OCDS007 ambient chronothermostat (optional)
See also Paragraph 1.7.1.2
How to connect the OCDS007 ambient chronother-
mostat
Connection of OCDS007 ambient chronothermostat is
made on the wiring terminal block located in the electri-
cal panel inside the appliance.
1. Access the electrical board of the appliance according to
the Procedure 4.2
2. Perform connections as shown in the diagram in Figure
4.3
p. 32 and in Figure 4.4 p. 32.
3. Use shielded cable 2x0,75 mm² (or 4x0,75 mm² if the
alarm indication signal is included), connecting the
shield to one of the ground terminals provided on the
appliance electrical panel.
4. The connection cable must be kept separate from mains
voltage cables.
The cable may not be longer than 30 metres.
4.4.1.3
External request
See also Paragraph 1.7.1.3
It is required to arrange:
▶
Enable device (e.g. thermostat, timer, switch, ...) fitted with a
voltage-free NO contact.
How to connect the external request
Connection of external request is effected on the termi-
nal block located in the electrical panel inside the unit.
1. Access the electrical board of the appliance according to
the Procedure 4.2
2. Connect the voltage free contact of the external device,
through two conductor wires, to terminals COM and REQ
(respectively: common and heating request) of the inter-
nal terminal block (Figure 4.5
p. 32).
3. Use shielded cable 2x0,75 mm², connecting the shield to
one of the ground terminals provided on the appliance
electrical panel.
4. The connection cable must be kept separate from mains
voltage cables.
The signal is SELV (Safety Extra Low Voltage). The volt-
age-free contact of the external device that gives the
request must have double or reinforced insulation with
respect to line voltage parts.
The cable may not be longer than 30 metres.