Installation Instructions; Power Connections - Kroll PE90 Manual De Instrucciones

INSTALLATION INSTRUCTIONS

Warning
All the operations described in this section must
only be performed by professional and skilled
personnel.

POWER CONNECTIONS

Warning
The power line of the generator must be fitted with
an earth lead and a residual current circuit breaker.
The supply cable must be connected to a
switchboard that has an isolation switch.
All the control and safety devices are already electrically
connected.
Before switching on the heater, and therefore, before plugging
it into the electrical power supply, a check must be made that the
power supply specifications are the same as those stated on the
identification plate.
Warning
The equipment is fitted with a temporary power
cable, used for the working test.
Warning
The temporary power cable must be removed and
replaced with a H07RN-F cable having a 1.5 mm2
diameter.
The cable must be stripped leaving the earth
conductor at least 2 cm longer.
The electrical power cable must be connected in conformity to
the polarity specified on the main terminal board of the electrical
panel: phase (L) and neutral (N).
Warning
If polarities L and N are incorrect, the space heater
may stop a few seconds after it is switched on for
the first time.
Fig. 2
If any room thermostat or other accessories are connected to
the system (such as the timer for example) this must be done by
connecting the electrical cable to the thermostat plug (10):
• Take the plug (10) out of the power switchboard, open it and
remove the electrical jumper between terminals 2 and 3 of
the plug.
• Connect the thermostat electrical cable to terminals 2 and 3
of the thermostat plug (10).
• Close the plug again and plug it back into the power
switchboard.
Warning
Never attempt to switch the heater on or off by
connecting the room thermostat (or other control
devices) to the electrical power line.
EN
Installation and connection of all the other accessories are
given in the specific instructions enclosed with each accessory,
like the specific user instructions.
The electrical wiring diagram shown in this manual only shows
the electrical connection.
FUEL LINE CONNECTIONS
Warning
Before installation check that the local gas
distribution conditions, the gas type and pressure
and the current
compatible.
The gas supply hose connection must be of suitable size and
adequate for the type of system to be set up and must be
effected by arranging the "gas ramp" as shown in Fig. 3: the gas
pipe (1), the cut-off valve (2) and the antivibration coupling (3)
are not supplied with the heater and so must be provided by the
installer connecting them to the al gas valve group (4) supplied
with the space heater.
1st START UP
The heater is set up for one of the operating categories in Tab.
I: the adhesive label applied on the gas valve group (4) indicates
the appliance category (usually category I2H, G20 / 20 mbar).
Before starting the generator it is necessary to consult the
Tab. I to establish the original appliance category, fixed
compulsory from the referring European and national rules,
relating to the country of residence.
Warning
If the appliance category is not the one the unit is
set up for, follow the detailed instructions in the
section "CHANGING TYPE OF GAS".
Only when the heater has been prearranged according to its
proper appliance category will it be possible to carry out the
following operations:
• Leak away some gas from the feed pipe;
• Check that the gas pipe has no leaks.
• Open the gas stopcock and start the space heater;
Warning
The gas valve group is set up for a maximum
supply pressure of 60 mbar (SIT 822 NOVA), 200
mbar (Honeywell VR 420), 360 mbar (DUNGS MB-
DLE).
If the supply pressure is greater than this value,
the valve safety membrane could break and cause
the valve safety stop to be triggered.
• Connect a gauge to the upstream pressure intake (4) of the
valve group (Fig. 3);
• Read the supply pressure off the 1st gauge and if
necessary adjust the gas supply system pressure regulator
until the correct supply pressure shown in Tab. I is reached;
• If necessary, the valve opening speed can be varied for
9
unit regulation status
Fig. 3
are