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4.2. POWER CONNECTIONS
Warning
The power line must be earthed and fitted with a residual
current circuit breaker.
The power cable must be connected to a panel fitted with
a cut-out.
Before switching on the heater and, therefore, before plugging it into
the electrical power supply, check that the power supply
specifications are the same as those stated on the identification
plate.
Any room thermostat or other accessories (such as a timer) are
connected to the system by connecting the electrical cable to the
thermostat plug (c):
• Take the plug (c) out of the electrical panel, open the plug and
remove the jumper between terminals 2 and 3.
• Connect the thermostat electrical cable to terminals 2 and 3 of the
thermostat plug (c).
• Close the plug again and plug it back into the panel.
Warning
Never attempt to switch the heater on or off by connecting
the room thermostat (or other control devices) to the
electrical power line.
Warning
3-phase models are pre-set for 400V 3-phase operation.
Contact the manufacturer for conversion to a 230V 3-
phase system.
The installation and connection of all the other accessories are
described in the specific instructions included with each accessory,
together with operating instructions.
The electrical diagram shown in this manual refers to the electrical
connection only.
4.3. CONNECTION TO HOT AIR DUCTS
4.3.1. AIR DELIVERY DUCTS
The space heater is set to operate with direct distribution of air.
Nevertheless, it can be connected to appropriately sized air
distribution channels, if required, with maximum diameter and
length as shown in the "TECHNICAL SPECIFICATION TABLE."
Warning
Before starting the heater, check that the direction of
rotation of the fan matches the direction shown on the fan
itself.
The air distribution channels can be connected by using the various
accessories supplied, placing the connector head-on to one or more
outlets chosen as needed.
L-L 248.00-SO
NO
EN
4.3.2. AIR SUCTION DUCTS
The heater can be connected to suction ducts to distribute air from
the room to be heated. These ducts must comply with the maximum
diameter and length specified in the "TECHNICAL SPECIFICATION
TABLE" and must be connected with accessory (A) (provided), to be
assembled on the centrifugal fan casing.
The centrifugal fan has a panel (B) with a sliding shutter (C) to emit
fresh air for ventilation. The shutter can be set from a minimum
value (position D) to a maximum value (position E).
Warning
Accessory (A) for connecting the air suction duct and
panel (B) with pair flow adjustment shutter (C) can be
assembled on either the right or left side of the fan casing.
4.4. MOUNTING THE RIELLO GAS BURNER
Warning
Riello gas burners are supplied pre-fit with a nozzle for
natural gas or for LPG.
• Remove the box cover and, with an appropriate tool, eliminate
metal parts A and B by following the pre-cut line already traced on
the cover.
A
B
• Take cover C and assemble it on the burner cover by using the
self-threading screws supplied.
D
B
C
A
E
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