5 First switch on
28
Figure 4�7 – Recovery exchanger pump connection wiring diagram
5 FIRST SWITCH ON
First Start-Up entails checking/setting up the combus-
tion parameters and may exclusively be carried out by a
Robur TAC. NEITHER the user NOR the installation tech-
nician is authorised to perform such operations, under
penalty of voiding the warranty.
5�1 PRELIMINARY CHECKS
Preliminary checks for First Switch-on
Upon completing installation, before contacting the TAC the in-
staller is bound to check:
▶
water-heating, electrical and gas systems suitable for the re-
quired capacities and equipped with all safety and control
devices required by the regulations in force;
▶
absence of leaks in the water and gas systems;
▶
type of gas for which the appliance is designed (methane
or LPG);
▶
supply gas pressure complying with the values of Table
3.3 p. 22, with max tolerance ±15%;
▶
Power supply mains complying with the appliance's rating
plate data;
▶
appliance correctly installed, according to the manufactur-
er's instructions;
▶
system installed in a workmanlike manner, according to na-
tional and local regulations.
Abnormal or hazardous installation situations
Should any abnormal or hazardous installation situations be
found, the TAC shall not perform First Switch-on and the appli-
ance shall not be commissioned.
These situations may be:
▶
appliance installed inside a room;
▶
failed compliance with minimum clearances;
▶
insufficient distance from combustible or flammable mate-
rials;
▶
conditions that do not warrant access and maintenance in
safety;
▶
appliance switched on/off with the main switch, instead of
the control device provided (DDC, or external enable);
▶
appliance defects or faults caused during transport or instal-
lation;
▶
gas smell;
▶
non-compliant mains gas pressure;
▶
all situations that may involve operation abnormalities or are
potentially hazardous.
Non-compliant system and corrective actions
Should the TAC find any non conformities, the user/installer is
bound to perform any corrective procedures required by the
TAC.
After performing the remedial actions (the installer's responsi-
bility), if the TAC deems that safety and conformity conditions
are in place, "First Switch-on" may be effected.
LEGEND
KP
Relay on the unit for recovery exchanger
pump request
KPt
Thermostat with set-point calibration of
DHW tank (not supplied)
KPs
Thermostat calibrated at 35 °C with
capillary tube in the lower part of the
DHW tank (not supplied) [to be provided
in the event the water flow rate on the
recovery circuit exceeds the nominal
value of 1000 l/h]
KPc
Two-pole relay for recovery exchanger
pump request (not supplied)
