Maintenance
Installation, use and maintenance manual – Gitié ARAY
37
7
see Paragraph 1.6
p. 20), the appliance is switched on/off
by the ON/OFF positions of the external control devices.
After switching on with the control, in normal operating condi-
tions, the appliance starts/stops automatically according to the
user's heating/cooling needs, supplying hot or chilled water at
the programmed temperature.
Although the external request is in the "ON" position, this
does not mean the appliance will start immediately, but
it will only start when there are actual service demands.
6.3
MODIFYING SETTINGS
Modify settings via the DDC
If the device is connected to the DDC control, refer to the
relevant manual to modify settings.
Do not modify complex settings
Specific technical and system knowledge is required for
complex settings. Contact a TAC.
6.4
EFFICIENCY
For increased appliance efficiency:
▶
Keep the finned coil clean.
▶
Set water temperature to the actual system requirement.
▶
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 or external
enable) and wait for the end of the shutdown cycle, then
disconnect power and gas supply, by acting on the elec-
trical disconnector and gas valve.
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
