Riello Array AR 500 SE - Pumps; Water Circuit; Positioning of the Temperature Sensors

14
PRODUCT DESCRIPTION
2.12 Pumps
The Array AR 399 SE and Array AR 500 SE are equipped with a
built-in circulator with integrated check valve.
9
CAUTION: During the rst start-up, and at least once a year, the
rotation of the circulator shaft should be checked as, espe-
cially after long periods of not being operated, deposits and/
or residuals could impede its free rotation.
9
CAUTION: Before loosening or removing the circulator cap, pro-
tect the electric devices located underneath from any water
that exits.
0
STOP: It is prohibited to operate the circulators without water.
2.13 Water circuit
2
MIRI
1 7 8 9
4
5
6
10
11
3
1 Heat exchanger
2 Pump
3 Check valve
4 Drain cock
5 Minimum Water Pressure
Switch (set to 7 psi/0.5
bar)
6 NTC return sensor
7 Safety water high-limit
thermostat temperature
sensor
8 NTC ow sensor
9 Automatic air vent
10 Flow-meter
11 LWCO
MI Central heating supply
RI Central heating return
Fig. 5
Water circuit
2.14 Positioning of the temperature sensors
1 Limit thermostat temperature
2 Water temperature sensor
3 Return temperature sensor
4 Flue sensor
2
3
1
4
Fig. 6 Positioning of the temperature sensor