Burnham Series 5B Boiler Hoja De Especificaciones

       combination diaphragm valve/regulator with low-high-low operation. 

       a manual shut-off valve, pilot gas filter, pilot shut-off cock, gas pressure regulator, solenoid gas valve, 
       and motorized gas valve with full modulation operation. 

       a manual shut-off valve, pilot gas filter, pilot shut-off cock, gas pressure regulator, low and high gas 

pressure switches, two motorized gas valves with on-off operation, normally open vent valve and 
second manual shut-off valve.  

* 4.2      (Low-High-Low firing rate controller to be used with Option (d) and (e)). A hi-lo firing rate  controller  
        shall be furnished.  The controller shall be of the SPST type switch with a range of 130 to 240°F to        
   open on temperature rise (water boiler); 2 psi to 14 psi to open on pressure rise (steam boiler). 

     

* 4.2     (insert for 6 thru 14 section boilers - Modulating firing rate controller to be used with Option (f). 

A modulating firing rate controller shall be furnished.  The controller shall be 3 wire - 24 volt type with 
a potentiometer resistance of 135 ohms. 

  * 

4.2 

  (insert for 15 thru 26 section boilers - Modulating firing rate controller to be used with Option (f). 

A dual modulating firing rate controller shall be furnished.  The controller shall contain two 135 ohm  

       potentiometers, 24 volt type each capable of controlling a motorized modulating gas valve.  Both  
       potentiometers to work in unison. 

      4.3     Boiler ignition system shall be (select option a, b, c, d, e, f, or g). 

(Note:  This ignition system must be used only with gas control train option (a or b) 

of the EI type system which shall provide:  

(insert for 6 thru 14 section boilers) (1) electrically ignited intermittent gas pilot 
(insert for 15 thru 26 section boilers) (2) electrically ignited intermittent gas pilots 

and permits the main gas valves to open only when the pilot burner is proven to be lit.  Should a loss of 
pilot flame occur, the main gas valve will close and the spark will recur within 0.8 seconds.  If pilot fails 
to ignite within 90 seconds, control will attempt to relight after 5 minutes.  System shall include: 

(insert for 6 thru 14 section boilers): (1) electronic ignition module, (1) electronic pilot assembly 
and (1) pilot gas valve. 

(insert for 15 thru 26 section boilers): (2) electronic ignition modules, (2) electronic pilot 
assemblies and (2) pilot gas valves. 

       of the EO type electronic control system which provides manual ignition, 100% shut-off, continuous 
              pilot flame operation, electronic supervision of pilot, 0.8 second flame response time, 15 second safety 
       switch timing and shall include: 

(insert for 6 thru 14 section boilers):  (1) Honeywell RA890-F protectorelay,  (1) pilot assembly, 
(1) pilot safety switch. 
(insert for 15 thru 26 section boilers): (2) Honeywell RA890-F protectorelay, (2) pilot assemblies, 
(2) pilot safety switches.  

of the OP type electronic control system which provides manual ignition of electronic pilot assembly, 
100% shut-off, continuous pilot flame operation, electronic supervision of pilot, 0.8  second flame 
response time, 15 second safety switch timing and shall include: 

(insert for 6 thru 14 section boilers): (1) factory prewired electronic control panel   including: 
Honeywell RA890-F protectorelay, main power on switch and light, gas valve on switch and light, 
flame failure light and terminal strip, (1) pilot assembly, (1) pilot safety switch.  

(insert for 15 thru 26 section boilers): (2) factory prewired electronic control panels each 
including: Honeywell RA890-F protectorelay, main power on switch and light, gas valve on 

         switch and light, flame failure light and terminal strip, (2) pilot assemblies, (2) pilot safety switches.