Positioning Of Sensor Sockets - Riello RTC-80 Series Installation, Operation And Service Manual

INSTALLATION

2.8 Positioning of sensor sockets

RTC 1000-80 ÷ RTC 4700-80
(*) 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
a
a 6
b
b
b
7
a) 3/4"NPT
b) 1/2" NPT
3
(*)
1000 1300
2-1/2" #150 3" #150
min. max. min. max. min. max. min. max. min. max. min. max. min. max.
2-31/64" 3-15/16" 2-31/64"
63 mm 100 mm 63 mm
LWCO
1
RTC-80
1700 2300
4" #150 4" #150
3-15/16" 2-31/64" 3-15/16" 2-31/64" 3-15/16"
100 mm 63 mm 100 mm 63 mm 100 mm
22
4
2
3000 3800
5" #150 5" #150
2-31/64" 4-59/64" 2-31/64" 4-59/64" 2-31/64"
63 mm 125 mm 63 mm 125 mm 63 mm
4700
6" #150
4-59/64"
125 mm