Maintenance
Installation, use and maintenance manual – GAHP A
33
7
▶
Adjust the maximum water temperature to the actual sys-
tem requirements;
▶
Reduce repeated switch-ons to the minimum (low loads);
▶
Program appliance activation for actual periods of use;
▶
Keep water and air filters on plumbing and ventilation sys-
tems clean.
7
MAINTENANCE
7.1
WARNINGS
Correct maintenance prevents problems, assures effi-
ciency and keeps running costs low.
Maintenance operations described herein may exclu-
sively be performed by the TAC or skilled maintenance
technician.
Any operation on internal components may exclusively
be performed by the TAC.
Before performing any operation, switch off the appli-
ance by means of the control device (DDC, CCP/CCI or
external request) and wait for the end of the switching
off cycle, then disconnect power and gas supply, by
acting on the electrical disconnecter and gas cock.
The efficiency checks and every other "check and mainte-
nance operation" (see Tables 7.1
must be performed with a frequency according to cur-
rent regulations or, if more restrictive, according to the
provisions set forth by the manufacturer, installer or TAC.
Responsibility for efficiency checks, to be carried out for
the aims of restricting energy consumption, lies with the
system manager.
Environmental or operational heavy conditions
In environmental or operational conditions particularly
heavy (for example: heavy-duty use of the appliance,
salty environment, etc.), maintenance and cleaning op-
erations must be more frequent.
7.2
PRE-EMPTIVE MAINTENANCE
For pre-emptive maintenance, comply with the recommendations in Table 7.1
Table 7�1
GAHP A
GAHP GS/
WS
AY
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 air heat
exchanger
√ (1)
√ (1)
√ (1)
check the correct operation 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 achive the setpoint temperature
√
√
√
√
√
download the hystorical events
√
√
√
√
√
(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).
7.3
SCHEDULED ROUTINE MAINTENANCE
For scheduled routine maintenance, perform the operations in Table 7.2
p. 33, at least once every 2 years.
Table 7�2
GAHP A
GAHP GS/
WS
AY
GA ACF
GAHP-AR
Routine scheduled maintenance (to be performed at least once every TWO YEARS)
Check of the
unit
clean the combustion chamber
√ (1)
√ (1)
√
√
√ (1)
clean the burner
√ (1)
√ (1)
√
√
√ (1)
clean the electrodes of ignition and flame sensing
√
√
√
√
√
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.
