Williamson-Thermoflo FreeStyle 2 Series Manual page 47

FreeStyle
Series 2 wall mount gas-fired water boiler — Boiler Manual
19 Multiple boiler installations
Figure 58
1 Flow/check valve
2 Isolation valves (when used)
3 Cap
4 Primary circulator
5
6 System air eliminator
7 System automatic air vent
8 Pressure reducing valve
9 Check valve or backfl ow preventer, as required by appli-
cable codes.
Part number 550-142-950/0919
(continued)
®
FreeStyle
Legend for Figure 58
10 Cold water supply
11 Supply water temperature control (when used).
12
header).
13 Water fl ow switch (when used).
14
15 System supply
16 System return
17
piping, installed per this boiler manual.
18 Purge/drain valve
(fi eld supplied),
47