Bryan Boilers Forced Draft Steam Boilers ユーザーズマニュアル

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
1.4.1 GENERAL 
Do not run any pipes along the access panel 
side of the boiler. Maintain clearances as 
shown on the dimensional drawing for 
servicing of the boiler tubes. Provide at least 
36" from the gas train and burner, unless a 
larger dimension is indicated on the 
dimensional. All piping should be designed 
and installed to avoid any loadings on the 
boiler connections or piping. 
 
1.4.2 STEAM SUPPLY CONNECTION 
A steam shut-off valve must be installed 
between each boiler and the steam main. 
This valve must be of the outside screw and 
yoke design to allow indication from a 
distance whether the valve is open or closed.  
 
1.4.3 FEEDWATER CONNECTION 
Install a check valve and a globe valve 
between the feed pump and the boiler. It is 
also recommended to install a globe valve 
between the feed pump and the receiver  

 
tank. This valve can then be adjusted to 
bypass excess pump capacity to better 
control the boiler feed rate. 
 
1.4.4 SAFETY RELIEF VALVE(S) 
A connection is provided in the top of the 
boiler for the relief valve. The relief valve 
discharge piping must be the same size as 
the relief valve discharge opening. Avoid 
over-tightening as this can distort valve seats. 
All piping from relief valve must be 
independently supported with no weight 
carried by the valve.  
 
1.4.4 BLOWDOWN CONNECTION 
Blowdown valve(s) must be full size of the 
connection on the boiler. Steam boilers 15 
psig and below require at least one blowdown 
valve. Higher pressure boilers require two 
blowdown valves with one or both valves 
being slow opening type. Each water column 
and float type low water cut-off must be 
equipped with a blowdown valve.