HydroTherm CS300 Installation And Operating Manual page 31

CS300 BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Figure 77 Typical Steam Piping - Pumped Return for Multiple Boilers
F & T Trap
High Level
"Spill"
To Receiver
Tank
LWCO
Pump
Control
& Gage
Glass
Stop Valve
Check Valve
Blowoff Valves
Solenoid Valve
CAUTION: Make up water connections must be made
to the return piping, not directly to the boiler or boiler
damage may result.
Locate the boiler blow off preferably opposite the return
piping connections. Blow off valves must be sized equal
to, or larger than, the steam relief valve. Any discharge
piping is to be full size to the point of discharge.
Assemble the control tree and low water cutoff as shown
in Figure 78. Use Figure 74 to locate the control tree
and low water cutoff on the boiler.
Table 4 Riser, Equalizer & Header Pipe Sizes
Boiler Model Risers
CS300-5 to -9 1 @ 3"
CS300-10 to -12 2 @ 3"
Stop Valve
Pres.
Controls
Steam Gage
To Receiver
F & T Trap
Tank
High Level
"Spill"
Stop Valve
Check Valve
Solenoid Valve
Equalizer Header
1-1/2" 3"
2" 4"
ASME
Safety
Valve
Stop Valve
Pres.
Controls
Pump Control
& Gage Glass
LWCO
Steam
Gage
Figure 78
MANUAL RESET
HIGH LIMIT
PET COCK
SYPHON
OPERATIG
CONTROL
SYPHON
L.W.C.O.
(OPT.)
Page 31
ASME
Safety
Valve
Steam Control Tree
STEAM
GAUGE
GAUGE
GLASS