Robur G 30, Installation, Use And Maintenance Manual

Page: 44 / 64

First start-up
44
5
4.6 0-10 V INPUT
Without a Modbus controller, either the room tempera-
ture setpoint or the power value can be communicated
to the Next-G gas unit heater alternatively via a 0-10 V an-
alogue signal.
The meaning to be given to the 0-10 V input is chosen by
appropriately configuring the gas unit heater parameters
(Paragraph 5.4 p. 48).
How to connect the 0-10 V signal
1. Access the electrical board of the appliance according
to the Procedure 4.2
p. 35.
2. Connect the 0-10 V signal, using a FRO-HP 2x0,75 mm²
cable, to the "0-10V" contact of the terminal block as
shown in Figure 4.14
p. 44, respecting the indicat-
ed polarity. For industrial environments, a shielded
cable should be used, connecting the shield to the "-"
terminal.
The cable may not be longer than 30 metres.
Figure 4.14 0-10 V input connection
+ -
+ -
Tamb1 Tamb2 Text
+ -
0-10V
J30
+ -
5 FIRST START-UP
First start-up entails checking/setting up the com-
bustion parameters and may exclusively be carried
out by a Robur TAC. NEITHER the user NOR the in-
stallation technician is authorised to perform such
operations, under penalty of voiding the warranty.
The installer is obliged to carry out preliminary
checks described in Paragraph 5.1 p. 44.
5.1 PRELIMINARY CHECKS
Paragraph dedicated to the installer.
5.1.1 Preliminary checks for first start-up
Upon completing installation, before contacting the TAC
the installer must check:
▶
Electrical and gas systems suitable for the required ca-
pacities and equipped with all safety and control de-
vices required by the regulations in force.
▶
Absence of leaks in the gas system.
▶
Type of gas for which the appliance is designed (natu-
ral gas, LPG or other gas).
▶
Supply gas pressure complying with the values of
Table 3.1
p. 29, with max tolerance ±15%.
▶
Correct installation of the flue gas exhaust duct.
▶
Combustion air intake and flue gas exhaust correctly
carried out according to the regulations in force.
▶
Power supply mains complying with the appliance's
rating plate data.
▶
Appliance correctly installed, according to the manu-
facturer's provisions.
▶
System installed in a workmanlike manner, according
to national and local regulations.
5.1.2
Abnormal or hazardous installation
situations
Should any abnormal or hazardous installation situations
be found, the TAC shall not perform first start-up and the
appliance shall not be commissioned.
These situations may be:
▶
Failed compliance with minimum clearances.
▶
Insufficient distance from combustible materials.
▶
Conditions that do not warrant access and mainte-
nance in safety.
▶
Appliance switched on/off with the main switch, in-
stead of the provided control device.
▶
Appliance defects or faults caused during transport or
installation.
▶
Gas smell.
▶
Non-compliant mains gas pressure.
▶
Non-compliant flue gas exhaust.
▶
All situations that may involve operation abnormali-
ties or are potentially hazardous.
5.1.3
Non-compliant system and corrective
actions
Should the TAC find any non conformities, the user/install-
er is bound to perform any corrective procedures required
by the TAC.
After performing the remedial actions (the installer's re-
sponsibility), if the TAC deems that safety and conformity
conditions are in place, first start-up may be effected.
5.2 COMBUSTION PARAMETERS CHECK
Paragraph reserved exclusively to TACs.
The gas unit heater is supplied with the gas valve
already calibrated with respect to the fuel indi-
cated on the sticker next to the gas connection.
Therefore, during the commissioning, only the CO
2
value must be checked and, only if the check is not
successful, or after a gas changeover, the complete
check procedure must be carried out.