Palazzetti GLH110 Manual De Instalación, Uso Y Mantenimiento página 27

PUMPS MANAGEMENT WITH PWM CONTROL
P18 and P19 parameters are used to enable and select the operating mode of the PWM1 and PWM2 signals, to manage the
pumps provided in the hydraulic/plumbing schemes:
➢ PWM1: P18 = 0 → Disabled; P18 = 1 → Manual;
➢ PWM2: P19 = 0 → Disabled; P19 = 1 → Manual;
PWM Disabled:
The pumps are controlled exclusively via 230V outputs
PWM Manual:
The PWM duty cycle which determines the speed of the pumps is set with the following parameters:
➢ U06 if PWM1 with Heating profile
➢ U16 if PWM2 with Heating profile
➢ U26 if PWM2 with Solar profile
Automatic PWM:
In relation to the type of pump, the PWM duty cycle is calculated on the basis of the temperature of the fireplace probe, high
Buffer Tank probe or solar collector probe and can vary within the following ranges:
➢ Between U01 and U02 if PWM1 with Heating profile (es. 85 ÷ 5 %)
➢ Between U11 and U12 if PWM2 with Heating profile (es. 85÷ 5 %)
➢ Between U21 and U22 if PWM2 with Solar profile
Fireplace Pump speed change is enabled within the following temperature range:
➢ Between A01 and A01+A80 in heating management
➢ Between A01 and A01+A81 in DHW management
Heating Pump Speed change is enabled within the following temperature range:
➢ Between A04 and A04+A82
Or if the Buffer Tank is present
➢ Between A17 and A17+A82
Solar Pump speed change is enabled within the following temperature range:
➢ Between A33 and A33+A82
The profile of the PWM signal, Heating or Solar, is selected automatically on the basis of the pump that needs to be
managed and the following are the profiles of the pumps that can be found on the market:
HEATING Profile
004778250 - 30/03/2020
P18 = 2 → Automatic
P19 = 2 → Automatic
(Fireplace Pump)
(Heating Pump)
(Solar Pump)
(es. 15 ÷ 95 %)
(ex. if A01=35°C, A80=20°C then range: 35 ÷ 55 °C)
(ex. if A01=35°C, A81=15°C then range: 35 ÷ 50 °C)
(ex. if A04=45°C, A82=20°C then range: 45 ÷ 65 °C)
(ex. if A17=45°C, A82=20°C then range: 45 ÷ 65 °C)
(ex. if A33=45°C, A82=20°C then range: 45 ÷ 65 °C)
On the basis of this profile it is advisable to set
the PWM duty cycle parameters as shown
below:
PWM1
Vmin: U01 <= 85%
Vmax: U02 >= 5%
PWM2
Vmin: U11 <= 85%
Vmax: U12 >= 5%
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