40
EN
1.10.1.3 Specifications
GENERAL
Power supply
230 (+10 to –15)
VAC
(%)
Frequency
50 (
±
5 )
Hz (%)
Operating temperature range
–20 to +60
°C
Network fuse
3.15 AF (rapid) 5x20
Protection varistor
300 D7
VAC
SOLAR PUMP - P1 TRIAC (230 VAC)
49 – Cos
φ
1
W
AUX 3 output - P1 PWM (230 VAC)
230 – 0.5
VAC/A
AUX 2 output - P2 (230 VAC)
0.5 – Cos
φ
1
A
AUX 1 output - Thermostat/P2 enabling
0.5 – Cos
φ
1
A
Free contact outputs - D1 (230 VAC)
230 – 0.5
VAC/A
NTC TEMPERATURE SENSORS
Correct sensor operating range
–40 to +105
°C
Sensor anomaly signalling temperatures
–5>>T>>120
°C
General tolerance on temperatures
(referred to the electronics alone)
±1.5
°C
PT1000 TEMPERATURE SENSORS
Correct sensor operating range
–40 to +250
°C
Sensor anomaly signalling temperatures
–5>T>170
°C
General tolerance on temperatures
(referred to the electronics alone)
±1.5
°C
ENVIRONMENTAL CONDITIONS OF USE
Operating ambient temperature
–20 to +60
°C
Storage and transport temperature
–30 to +60
°C
Maximum room humidity
95% at 40
°C
1.10.2 Overvoltage protection module
The overvoltage protection box protects the solar control unit
against possible overvoltages that could damage it, by travel-
ling through the wire of the solar panel sensors (for example,
due to heavy thunderstorms).
1.11 Thermostatic mixer (optional)
The thermostatic mixer
(not supplied with the forced-circulation
system)
is used in systems that produce domestic hot water for
sanitary-hygienic purposes.
Its function is to keep the temperature of the mixed water
sent to the withdrawal point constant, at the set value, against
changes in the temperature and supply pressure conditions of
the hot and cold water entering the system or of the amount
withdrawn.
Basically, the domestic hot water in the solar calorifier may
sometimes be too hot (e.g. 60°C) and thus, to avoid scalding,
a thermostatic mixer must be mounted to mix hot water with
cold water in order to obtain an optimal usage temperature
(e.g. 40°C–45°C).
1.12 Solar expansion vessel
Solar expansion vessels must have a nitrile membrane, as the
heat-transfer fluid circulating in the primary circuit is made up
of water and non-toxic propylene anti-freeze liquid.
d
FORBIDDEN
“Universal” expansion vessels with butyl membrane
and heating vessels with SBR membrane must strict-
ly be avoided, as the anti-frost liquid would risk dam-
aging them (since it is an aggressive substance).
The
Easy System
forced-circulation solar heating system is sup-
plied with an 18-litre expansion vessel with nitrile membrane.
Fig. 10
DESCRIPTION:
Expansion vessels:
18-litre capacity with nitrile rubber fixed
membrane.
Flange:
made of galvanised carbon steel and crimped.
Pressure:
max: 6 bar
Coupling:
3/4”