Technical data
Installation, user and maintenance manual – GAHP-A
17
3 NORMAL OPERATION
In this section you will nd all the indications necessary for the activation, regulation and
control of operation of the appliance depending on the type of installation and control
setup.
• TYPE A (NOT APPLICABLE at PRO Platform): controlled by Comfort Control
Panel.
• TYPE B: controlled by DDC (see Figure 5.3 Direct Digital Control (DDC) → 41).
• TYPE C: controlled by consent switch (e.g. on-o switch, ambient thermostat, tim-
er, etc.).
3.1 START UP AND SHUT DOWN
Ecient operation and long life of the appliance depend largely on its correct use!
Before activating the appliance, check that:
the gas valve is open;•
the appliance is powered electrically;•
the CCP/DDC are electrically powered;•
the installation technician has ensured that the hydraulic circuit is supplied in the •
correct conditions.
If these conditions are satised, it is possible to proceed with activation.
Type A: appliance connected to Comfort Control Panel (CCP)
Type NOT APPLICABLE at PRO platform.
Type B: appliance connected to a Direct Digital Controller (DDC)
If the appliance is connected to a Direct Digital Controller (see Figure 5.3 Direct Digital
Control (DDC) → 41) and the DDC is in controller mode, activation and control of the
appliance will occur exclusively by operating the DDC. In this case, refer to the manual
supplied with it.
The appliance must never normally be switched on and o by shutting o the power
supply upstream of the DDC before having used the latter rst and waited for the shut-
down cycle to end (approximately 7 minutes). The shutdown cycle terminates when the
hydraulic pump switches o (no parts in motion).
Shutting o the power supply while the appliance is running can irreparably damage its
internal components!
Type C: standalone appliance
Standalone appliances must be activated and deactivated only by means of the consent
switch provided by the electrical installation technician.
According to requirements, this consent switch may be an on/o button, an ambient
thermostat, a programmable timer, or one or more voltage free contacts controlled by
another process. For details about the type of on/o command installed, contact the
plant’s electrical installation technician.
The appliance must never normally be switched on and o by shutting o the power
supply upstream of the Controle Device (CCP, DDC or consent switch) before having used
the latter rst and waited for the shutdown cycle to end (approximately 7 minutes). The
shutdown cycle terminates when the hydraulic pump switches o (no parts in motion).