NTI Trinity TX Series Installation And Operation Manual page 44

Boiler and Heating System Piping
Figure 10-5 Tx51-200 Primary-Secondary Plumbing (non-Combi)
a Tx51-200 (non-Combi) boiler installation with
multiple Central Heating circulators. Refer to Figures
10-2(a) and 10-2(b) for boiler fitting identification.
44
│
(Multiple System Circulator Configuration)
Figure illustrates the basic
plumbing requirements for
Tx I&O Manual