Riello RTC-80 Series Installation, Operation And Service Manual page 23

RTC 5500-80
3
(*) On the models RTC 3000-80 to RTC 5500-80 the safety fitting is flanged.
1 Outlet operating temperature thermowell (G 1/2") for n.2÷3 instrument bulb. Internal diameter probe sockets 7 mm. Thermow-
ell length L170 mm
2 Over-temperature protection thermowell (G 1/2") for n.1 instrument bulb. Internal diameter probe sockets 15 mm. Thermowell
length L170 mm
3 Inlet operating temperature thermowell (G 1/2") for n.2÷3 instrument bulb. Internal diameter probe sockets 7 mm. Thermowell
length L100 mm
Boiler
Sensor manifold type Ø NPS
Thermowell length (*)
4 - LWCO (3/4" NPT)
5 - Gauge (3/4" NPT)
6 - Manual reset high limit (3/4" NPT)
7 - Outlet temperature sensor (1/2" NPT)
(*) The sensor sockets are not supplied.
9
The LWCO must be installed in a position higher than all other regulation and safety devices (over-temperature protection, operating
temperature sensor and temperature gauge).
5
a
LWCO
a
6
a
b
b
b 7
a) 3/4"NPT
b) 1/2" NPT
(*)
2-31/64"
23
4
1
2
RTC-80
5500
6" #150
min.
63 mm
INSTALLATION
max.
4-59/64"
125 mm