Maintenance
38
7
Table 7.1
GAHP A
GAHP GS/WS
AY00-120
GA ACF
GAHP-AR
Guidelines for the preventive maintenance operations
Check of the unit
visually check of the
general condition
of the unit and of its
finned coil
√ (1)
-
-
√ (1)
√ (1)
check the correct op-
eration of the device
used for monitoring
the water flow
√
√
√
√
√
check the % value
of CO
2
√
√
√
-
-
check gas pressure to
the burners
-
-
-
√
√
check that the
condensate discharge
is clean (If necessary,
frequency of the
maintenace operation
must be increased)
√
√
√
-
-
replace the belts after
6 years or 12,000
hours of operation
√
√
-
√
√
check/restore the
pressure of the
primary hydronic
circuit
-
-
√
-
-
check/restore the air
pressure inside of the
expansion vessel of
the primary hydronic
circuit
-
-
√
-
-
Check for every
DDC or CCI
check that the plant
is able to achieve the
setpoint temperature
√
√
√
√
√
download the event
history
√
√
√
√
√
(1) It is suggested to clean the finned coil once every 4 years (optimal frequency of the cleaning operation is in any case strongly affected by the installation site). Avoid excessively aggressive
cleaning of the finned coil (e.g. high-pressure washer).
7.3
SCHEDULED ROUTINE MAINTENANCE
For scheduled routine maintenance, perform the operations in Table 7.2
p. 38, at least once every 2 years.
Table 7.2
GAHP A
GAHP GS/WS
AY00-120
GA ACF
GAHP-AR
Ordinary scheduled maintenance
Check of the unit
clean the combustion
chamber
√ (1)
√ (1)
√
√
√ (1)
clean the burner
√ (1)
√ (1)
√
√
√ (1)
clean the ignition
and flame sensor
electrodes
√
√
√
√
√
check that the
condensate discharge
is clean
√
√
√
-
-
replace the silicone
gasket between the
front plate and the
exchanger
-
-
√
-
-
(1) Only in case the analysis of combustion products is non-compliant.
7.4
MESSAGES ON THE DISPLAY
4 digit display
The S61 board and the AY10 board (Figures 5.1
5.2
p. 35) are fitted with a 4-digit display, visible through the
sight glass of the respective front panels.
▶
When the appliance is powered on, all the LEDs switch on for
3 sec, then the board name is displayed.
▶
After another 15 sec, the appliance is ready to operate.
