P R O F I R E C O M B U S T I O N I N C .
10
Design Code Advantages & Disadvantages
Design
Code Advantages Disadvantages
301
1) Choice of HI/LO/OFF, electronic or pneumatic modulating temperature control
2) Uses less instrument gas than 302
3) Can be used with remote bath temperature monitoring and setpoint control
4) Less wiring than 302
5) Incorporates triple setpoint HIHI temperature protection
1) Uses an external temperature controller
2) 301A uses more electric power
3) Needs clean and dry instrument gas or air at minimum 35 psig
4) More difficult to install in 6” fire-tubes
302
1) Choice of HI/LO/OFF, electronic or pneumatic modulating temperature control
2) Uses less electric power than 301A
3) Can be used with remote bath temperature monitoring and setpoint control
4) Incorporates triple setpoint HIHI temperature protection
1) Uses an external temperature controller
2) Uses more instrument gas than 301
3) More wiring than in 301
4) Needs clean and dry instrument gas or air at minimum 70 psig
5) More difficult to install in 6” fire-tubes
303
1) No instrument gas needed
2) Suitable for all sour sites
3) Saves cost and GHG emissions
4) Incorporates triple setpoint HIHI temperature protection
1) Limited to HI/LO/OFF temperature control from an external temperature
controller
2) Uses same higher amount of electric power as 301A
3) More difficult to install in 6” fire-tubes
304
1) No instrument gas needed
2) Suitable for all sour sites
3) +/-1°C temperature control deadband built into the BMS controller
4) Reduces pilot freezing problems
5) Allows turning pilot OFF when not needed, then restarting it automatically. (especially for
propane pilots)
6) Ideally suited for 6” fire-tube
7) Save instrument gas cost and GHG emissions
8) Incorporates triple setpoint HIHI temperature protection
1) Limited to HI/Pilot/OFF temperature control.
2) Suitable only for burners up to and including 3” in size and maximum 1 MM Btuh
fuel input.
305
1) +/-1°C HI/pilot/OFF temperature control deadband built into the BMS controller
2) Reduces pilot freezing problems
3) Allows turning pilot OFF when not needed, then restarting it automatically. (especially for
propane pilots)
4) Ideally suited for 6” fire-tube
5) Incorporates triple setpoint HIHI temperature protection
1) Suitable only for burners up to and including 3” in size and maximum 1 MM
Btu/hr fuel input.
2) Needs clean and dry instrument gas or air at minimum 35 psig.
306
1) Uses less instrument gas than 302
2) Can be used with remote bath temperature monitoring and setpoint control
3) Less wiring than 302
4) Incorporates triple setpoint HIHI temperature protection
5) Allows turning pilot OFF when not needed, then restarting it automatically. (especially for
propane pilots)
6) Ideally suited for 6” fire-tube
1) Uses an external temperature controller
2) Needs clean and dry instrument gas or air at minimum 35 psig
