Gas Connection; Electrical Connection - Cuenod C 285 Operating Instructions Manual

Installation
Gas and electrical connections

Gas connection

Connecting the gas distribution system
to the gas train must be carried out by a
skilled technician.
The pipe section must be calculated, so
that load losses do not exceed 5% of
distribution pressure.
The external filter (C 280, 285) must be
fitted horizontally with a clean tube and
the cover placed in a vertical position to
allow for maintenance and to prevent
dust being carried along downstream of
the filter upon disassembly.
Any other type of assembly is
prohibited.
The ball valve (not supplied) must be
mounted upstream and as close as
possible to the external filter or to the
valve (pocket filter).
Threaded couplings used should comply
with current standards: tapered external
thread, parallel internal thread, with
tightness secured in the thread.
Enough space should be provided for
access to the setting of the gas pressure
switch.
Piping must be drained upstream of the
valve. Connections carried out in sit
must be tested for leaks using foam
designed for that purpose.
No leakage should be detected.
6

Electrical connection

Electrical fittings and connections
should comply with the current
standards.
Earth must be connected and tested.
See electrical diagram when connecting
the burner and the regulator.
The burner is supplied for a three-phase
electrical voltage 400V - 50Hz with
neutral and earth.
The ventilation motor starts up
automatically. A variable frequency
regulator can be fitted as an extra
option.
The three-phase operation 230V - 50Hz
requires : changing the coupling of the
motors and of the thermal relays of the
contractors (C 380 and 430), and using
a 630 VA insulation transformer on the
control circuit (not supplied).
For other voltages and frequencies,
please contact us.
05/2008 - Art. Nr. 13 013 503D
Electrical connections
1) burner
- Built-in electrical cabinet
• Use stuffing boxes in order to secure
the required level of protection.
All the links, power and control, are
connected to the terminal block of the
cabinet.
Provide cables in sufficient length to
secure the gyration of the burner body
according to the assembly.
• Check and adjust the calibre of the
contractors and thermal relays and the
wires section according to the
characteristics of the motor and of the
available voltage.
Wiring is not supplied.
- Detached electrical cabinet:
That cabinet can be installed:
- either against a wall
- or on a floor-mounted sub-frame.
All the links, power and control are
connected between the cabinet terminal
block and the terminal block of the
coupling case on the burner body.
The other assembly conditions are
similar to those of the built-in cabinet
2) of the gas train
• Connect the plugs pending to the
valve:
- either on the control cabinet,
- or on the coupling case on the
burner body.