Water Connections - Riello TAU Unit 50 Installation And Maintenance Manual

2.6

Water connections

TAU Unit boilers are designed and made for installation in combined central heating and domestic hot water production systems.
The specifications of the water fittings are as follows.
1
2
3
4
DESCRIPTION
A
B
C
1 - Central heating flow
2 - High temp. system return
3 - Low temp. system return
4 - Condensate outlet
NOTE: if the system only uses high temperature terminals, connect the system return to connection (3) for low temperature,
so as to use the whole exchange surface.
TAU Unit 50 TAU Unit 70
415 415
415 415
304 402
1" 1/2 1" 1/2
1" 1/4 1" 1/4
1" 1/2 1" 1/2
22 22
15
TAU Unit 100 TAU Unit 115
393 393
410 410
632 632
2" 2"
1" 1/2 1" 1/2
2" 2"
22 22
INSTALLATION
Unit of
meas-
urement
mm
mm
mm
Ø
Ø
Ø
Ø mm