**External WRAS appoved fillin
g
loop must be added during installation.
Figure
10
. Installation for CH Boiler (Heat Only Type Installation)
Expansion
Vessel
CH Return
Wras Approved
CH Supply
BS Stop Valve
Fixed spindle type
Filling Loop**
Water main
Expansion
Vessel
Figure 11. Installation for CH Boiler (Heat Only Type Installation)
**External WRAS appoved filling loop must be added during installation.
15