Robur M30 - Maintenance Procedures; Maintenance Warnings

Maintenance
Installation, use and maintenance manual – M gas unit heater
31
7
to the unit.
2. Using a suitable summer/winter selector switch
(Paragraph 4.4.2.2 p.25 ), select summer mode (con-
tact 1-3 open, contact 1-2 closed). This way the fan on-
ly will start.
3. To stop the fan press again the selector switch on win-
ter position (contact 1-2 open).
It is recommended that the heating request is de-
activated during the summer season by opening
contact Z9 by means of the provided control de-
vice (thermostat, chronothermostat or voltage-free
contact).
6.2.2 OCTR000 2-key basic control
Space heating activation
1. Set the summer/winter selector switch (A) in the win-
ter position (Figure 6.2 p.31 ).
2. Close contact Z9 using the control device provid-
ed (thermostat, chronothermostat or voltage-free
contact).
3. After the purge time (around 40 seconds), the gas so-
lenoid valve opens and the burner ignites.
4. When the ame is detected, the control box keeps the
gas valve open.
5. Otherwise, the control unit will try the ignition again
3 times, after the appropriate purge time. If the ame
does not ignite anyway, the control unit locks the unit
and light the locking state indicator lamp (C) on the
control (Figure 6.2 p.31 ).
6. In case of ame locking, press the reset button (B).
Figure6.2 2-keys basic control
A Summer/winter selector switch ( space heating operating mode;
summer operating mode, ventilation only)
B Reset button
C Lockout indicator lamp
A
B
C
Space heating shutdown
1. Switch o space heating request by opening Z9 con-
tact using the provided control device (thermostat,
chronothermostat or voltage-free contact).
2. The burner will shut down, while the fans will contin-
ue to operate until the appliance has cooled down
completely.
In case of prolonged periods of inactivity, see
Paragraph 7.4 p.32 .
Ventilation activation (summer mode)
1. Close the gas valve and check power supply availabil-
ity to the unit.
2. Set the summer/winter selector switch (A) in the sum-
mer position (Figure 6.2 p. 31 ). This way the fan
only will start.
3. To stop the fan press again the selector switch on win-
ter position .
It is recommended that the heating request is de-
activated during the summer season by opening
contact Z9 by means of the provided control de-
vice (thermostat, chronothermostat or voltage-free
contact).
7 MAINTENANCE
7.1 WARNINGS
Correct maintenance prevents problems, assures
eciency and keeps running costs low.
Maintenance operations described herein may ex-
clusively be performed by the TAC or skilled main-
tenance technician.
Any operation on internal components may
exclusively be performed by the TAC.
Before performing any operation, switch o the
appliance by means of the control device and wait
for the end of the shutdown cycle, then disconnect
power and gas supply, by acting on the electrical
disconnector and gas valve.
The eciency checks and every other "check and
maintenance operation" (see Table 7.1 p. 32 )
must be performed with a frequency according to