Munchkin VWH High Efficiency Hot Water Supply Boiler - Manual (Page 21)

21
PIPING
Piping Symbol Legend
circulator (open loop)
(w/ isolation flanges)
gate valve
globe valve
ball valve
swing-check valve
spring-loaded check valve
hose bib / boiler drain
diaphragm-type
expansion tank
(for potable water)
anti-scald rated
mixing valve
pressure gauge
pressure relief valve
(or P&T relief valve)
union
Munchkin heater
vacuum breaker
T/P
temperature /
pressure gauge
flow switch
Superstor Ultra
Storage Tank
PIPING ILLUSTRATIONS
Fig. 5-1