Freestyle 80 - Page 45

Figure 52 0IPINGSCHEMATICTYPICALPIPINGFORMULTIPLE FreeStyle
®
(EATING/NLYBOILERS
Part number 550-142-850/0716
45
FreeStyle
®
WALL MOUNT GAS-FIRED WATER BOILER — Boiler Manual
18 Multiple boiler installations (continued)
Legend for Figure 52
1 Flow/check valve
2 Isolation valves (when used)
3 Cap
4 Primary circulator
5 Expansion tank (diaphragm type)
6 System air eliminator
 System automatic air vent
8 Pressure reducing valve
9 Check valve or backflow preventer, as required by appli-
cable codes
10 Cold water supply
11 Supply water temperature control (when used)
12 ,OWWATERCUTOFFWHENUSEDPLACEABOVEPRIMARY
header)
13 Water flow switch (when used)
14 Boiler circulators
15 System supply
16 System return
 "OILER04GAUGERELIEFVALVEANDDISCHARGEPIPINGINSTALLED
per FreeStyle®"OILER-ANUAL
18 Purge/drain valve