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Фрагмент инструкции
POWER INTERRUPTION System shuts off, restarts when power is restored. PILOT FLAME FAILURE Mail valve closes. Module starts trial for ignition. WIRING DIAGRAM LADDER FORM WIRING DIAGRAM HONEYWELL EP SYSTEM S86 14 S8600, S8610 TROUBLESHOOTING GUIDE START NOTE: Before troubleshooting, familiarize yourself with the start up and checkout procedure. TURN GAS SUPPLY OFF, TURN THERMOSTAT (CONTROLLER) TO CALL Check line voltage power, low voltage transformer, limit controller, thermostat (controller) and FOR HEAT wiring. Also, check air proving switch on combustion air blower system (if used) and that vent damper (if used) is open and end switch is made. POWER TO MODULE (24V NOMINAL) Pull ignition lead and check spark at module Spark okay? NO • On modules with vent damper plug, make sure vent damper has not been installed, then removed. Replace vent damper if necessary. YES • On other models, replace module. YES NO NO SPARK ACROSS IGNITER/SENSOR GAP YES NO TURN GAS SUPPLY ON PILOT BURNER LIGHTS? YES NO SPARKS STOP WHEN PILOT IS LIT? YES NOMAIN BURNER LIGHTS? YES NOSYSTEM RUNS UNTIL CALL FOR HEAT ENDS? YES NOCALL FOR HEAT END SYSTEM SHUTS OFF? TROUBLESHOOTING ENDS YES • Check ignition cable, ground wiring, ceramic insulator and gap, and correct. • Check boot of the ignition cable for signs of melting or buckling. Take protective action to shield cable and boot from excessive temperatures. • Check that all manual gas valves ar open, supply tubing and pressures are good, and pilot burner orifice is not blocked. • Check electrical connections between module and pilot operator on gas control. • Check for 24 Vac across PV-Mv/PV terminals on module. If voltage if okay, replace gas control; if not, replace module. NOTE: If S8600B, H; S8610B, H goes into lockout, reset system. For S8600M, wait 6 min. norm. for retry or reset system. • Check continuity of ignition cable and ground wire. • Clean flame rod. • Check electrical connections between flame rod and module. • Check for cracked ceramic flame rod insulator. • Check that pilot flame covers flame rod and is steady and blue. • Adjust pilot flame. • If problem persists, replace the module. • Check for 24 Vac across MV-MV/PV terminals. If no voltage, replace module. • Check electrical connections between module and gas control. If okay, replace gas control or gas control operator. NOTE: If S8600B, H; S8610B, H goes into lockout, reset system. For S8600M, wait 6 min. norm. for retry or reset system. • Check continuity of ignition cable and ground wire. NOTE: If ground is poor or erratic, shutdowns may occur occasionally even though operation is normal at the time of checkout. • Check that pilot flame covers flame rod and is steady and blue. • If checks are okay, replace the module. • Check for proper thermostat (controller) operation. • Remove MV lead at module; if valve closes, recheck temperature controller and wiring; if not, replace gas control. Repeat procedure until trouble free operation is obtained. 15 P250AF DIRECT SPAR ELECTRODE LOCATION 7/16” 1/16” 1/4” 1/16” +/ (11.11 mm) (1.587 mm) +/- +/- 1/16” (6.35 mm) +/-(1.587 mm) (1.587 mm) 1/8” (3.175 mm) GAP 31/64” (12.3 mm) P265DI DIRECT SPARK IGNITION HONEYWELL S87K SYSTEM P250AF/P265-DI DIRECT SPARK IGNITION HONEYWELL SYSTEM Starting the burner: 1) Turn the gas valve control knob to “OFF”, wait five minutes. 2) Turn gas valve control knob to “ON”. 3) Set room thermostat above room temperature. 4) If burner does not light, SHUT OFF BURNER COMPLETELY AND WAIT FIVE MINUTES, then repeat steps 1 through 3 above. To shut off burner: 1) Turn the gas valve control knob to “OFF”. 2) Turn off electrical supply. DESCRIPTION The Honeywell S87K (24VAC) Direct Spark Ignition Systems operate through a thermostat to provide a means of ignition for the main burner on gas-fired equipment. This is accomplished by generating a spark between high voltage electrode and ground. Once the flame is established a flame rod monitors the main burner flame. SEQUENCE OF OPERATION On a call for heat, voltage is applied to the ignitor across Terminals 1 (power) and ^ (ground) of the input connector. A high voltage spark is then generated from the spark electrode to ground. Simultaneously, the gas valve is energized. At the start of each heat cycle, there is a “Trial for ignition period” of three seconds duration. Normally main burner flame will be established before the end of this period. Once the flame is established, sparking will cease and the “flame rod” will provide flame monitoring for the remainder of heat cycle. If the flame is extinguished during this cycle, the ignitor will start sparking automatically in an attempt to re-establish the flame. If this does not occur within the “Trial for ignition period,” the system will go into lockout, closing the gas valve. 16 TROUBLESHOOTING Although the following tests can be made using standard volt meter, it is quicker and more convenient to use a Fenwal Model 05-125539-001 Test Adapters. PRELIMINARY ...
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