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Honeywell Y8610U Product Data Download Page 18

Y8610U INTERMITTENT PILOT RETROFIT KIT

68-0133—2

18

Fig. 22. Y8610U schematic diagram.

2

2

L1
(HOT)

L2

24V
TRANSFORMER

LIMIT
CONTROLLER

ON-OFF
SWITCH

24V

THERMOSTAT

24V

(GND)

SPARK
DRIVE
CIRCUIT

2K1

FLAME
DETECTOR
CIRCUIT

RELAY
DRIVERS

TIMING
CIRCUITS

LOW
VOLTAGE
POWER
SUPPLY

1K

2K

3K

HYBRID CIRCUIT

1K1

1K2

3K2

2K2

3K1

ARC
GAP

SPARK

GND
(BUR-
NER)

MV/

PV

MV

PV

IGNITER
SENSOR

BURNER
GROUND

1

2

POWER SUPPLY.  PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ALTERNATE LIMIT CONTROLLER LOCATION.

3.0 AMP NONREPLACEABLE FUSE.  FUSE BLOWS WHEN VENT DAMPER IS PLUGGED IN.

INTERNAL WIRING

EXTERNAL WIRING

M3311

TH-W

YELLOW

FUSE

MAIN 
VALVE

VALVE

PILOT

3

VENT 
DAMPER 
PLUG

1

5

3

4

1

5

3

4

1

2

3

Summary of Contents for Y8610U

Page 1: ...mbination Gas Control 392431 Igniter Sensor 394800 30 Ignition Cable 393691 Natural to LP Gas Conversion Kit Wiring Harness 393690 14 Straight Flange Kit 3 4 in Reducer adapters for gas control Adhesive mounting option for S8610 Installation hardware Temperature Rating VR8304M 40 F to 175 F 40 C to 79 C S8610U 40 F to 165 F 40 C to 74 C If main valve current is 1A or less 175 F 79 C maximum ambien...

Page 2: ...Module VR8304M Dual Valve Combination Gas Control Refer to Fig 1 for other components Ambient Temperature Rating VR8304M 40 F to 175 F 40 C to 79 C S8610U 40 F to 165 F 40 C to 74 C If main valve current is 1A or less 175 F 79 C maximum ambient applies Also refer to Igniter Sensor specifications Electrical Ratings Voltage and Frequency 20 5 to 28 5 Vac 24 Vac nominal 60 Hz Current Rating 0 7A incl...

Page 3: ... IGNITION CABLE 30 IN 760 mm 393690 14 STRAIGHT FLANGE KIT 393691 NATURAL GAS TO LP CONVERSION KIT REDUCER BUSHINGS FOR GAS CONTROL SCREWS WIRE NUTS 3 M6866 GROUND ROD IGNITER SENSOR ADAPTER Fig 1 Y8610 retrofit kit components Fig 2 S8610U module dimensions 2 51 M1123A 3 3 16 81 2 5 8 67 1 4 6 3 15 16 100 3 3 8 86 1 1 32 26 5 7 16 138 3 3 8 86 2 3 16 5 2 3 16 5 2 ...

Page 4: ...rminals 1 4 in male quick connect terminals Igniter Sensor Specifications Model 392431 Igniter Sensor Includes igniter sensor assembly ground rod and adapter refer to Fig 1 Dimensions Refer to Fig 4 Electrode Flame Rod Material Kanthal Maximum Temperature Ratings Ground Rod Tip 1775 F 968 C Ceramic Insulator 1250 F 677 C Mounting Replaces the thermocouple on the existing pilot burner Fig 3 VR8304M...

Page 5: ...trols Where chemicals could be suspended in air as in some industrial and agricultural applications protect the ignition module from exposure with a NEMA 4 enclosure see the Electronic Ignition Service Manual form 70 6604 Dust or Grease Accumulation Heavy accumulation of dust or grease can cause the controls to malfunction Where dust or grease can cause a problem provide covers for the module and ...

Page 6: ...n is high the system should be checked more often Dusty wet or corrosive environment Because these environments can cause the controls to deteriorate more rapidly the system should be checked more often Any control should be replaced if it does not perform properly during Checkout or Troubleshooting In addition replace any module if it is wet or looks like it has been wet Protective enclosures see...

Page 7: ...ced by a qualified service technician Force or attempted repair can result in a fire or explosion IMPORTANT These gas controls are shipped with protective seals over the inlet and outlet tappings Do not remove the seals until ready to connect the piping Converting Between Natural and LP Gas WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE SEVERE INJURY OR DEATH 1 Do not attempt to use a ...

Page 8: ...nds are square deburred and clean All tubing bends must be smooth and without deformation 쐇 Run the new pipe or tubing to the gas control When tubing is used obtain a tube to pipe coupling to connect the tubing to the gas control 쐋 Install a sediment trap in the gas supply line See Fig 10 Fig 10 Install sediment trap Mount Gas Control 쐃 The gas control can be mounted from 0 to 90 degrees in any di...

Page 9: ...M3312 PIPE Fig 12 Always use new compression fitting Mounting S8610U Intermittent Pilot Module Select a location close to the pilot burner to allow the ignition cable to run to the igniter sensor The ambient temperature and other conditions should match those listed in the Specifications We recommend mounting the module with the terminals down so the terminals are protected from dripping water and...

Page 10: ...V PV MV MV VR8304M COMBINATION GAS CONTROL IGNITER SENSOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ALTERNATE LIMIT CONTROLLER LOCATION CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER JUMPER WIRE FROM CIRCUIT BOARD TO SENSE CONNECTOR REMAINS IN PLACE 쐇 Adjust the thermostat heat anticipator to match the system current draw The current draw equals th...

Page 11: ...ECTED JUMPER WIRE FROM CIRCUIT BOARD TO SENSE CONNECTOR REMAINS IN PLACE WIRING HARNESS D80D VENT DAMPER Fig 16 Y8610 in typical atmospheric burner heating system with D80B Vent Damper 1 2 3 4 5 6 6 5 4 4 M3310 PILOT BURNER GROUND MV MV PV PV GND BURNER 24V GND 24V TH W SPARK SENSE VENT DAMPER PLUG S8610U L1 HOT L2 1 2 3 MOTOR RED BLUE BLACK ORANGE YELLOW PV PV MV MV VR8304M COMBINATION GAS CONTRO...

Page 12: ...temperature to call for heat Watch for spark at pilot burner Time spark from start to shutoff See Specifications section Open the gas control knob and ensure no gas is flowing to the pilot or main burner Set the thermostat below the room temperature and wait one minute before continuing STEP 5 Check and Adjust Gas Input to Main Burner CAUTION 1 Do not exceed the input rating stamped on the applian...

Page 13: ...urner lights smoothly without flashback Make sure the main burner operates smoothly without floating lifting or flame rollout to the furnace vestibule or heat buildup in the vestibule If the gas line has been disturbed complete the Gas Leak Test following Step 1 Turn the thermostat or controller below the room temperature Make sure the main burner and pilot flames go out OPERATION System operation...

Page 14: ...trained experienced service technicians should service intermittent pilot systems Perform the Checkout see Checkout section as the first step in troubleshooting Then check the appropriate troubleshooting guide Fig 19 and the schematic diagram Fig 22 to pinpoint the cause of the problem When troubleshooting indicates an ignition problem see the Ignition System Checks section to isolate and correct ...

Page 15: ...t should light but the main burner remains off because the main valve actuator is disconnected Check the pilot flame Make sure it is blue steady and envelops 3 8 to 1 2 in 10 to 13 mm of the flame rod See Fig 20 for possible flame problems and their causes If necessary adjust the pilot flame by turning the pilot adjustment screw on the gas control clockwise to decrease or counterclockwise to incre...

Page 16: ...eld cable and boot from excessive temperatures YES YES Check that all manual gas valves are 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 is okay replace gas control if not replace module NO TURN ON GAS SUPPLY YES PILOT BU...

Page 17: ...e entrance 쐇 Disconnect the control module green ground wire 쐋 Connect the microammeter negative lead to the control module GND BURNER terminal and the positive lead to the green ground wire see Fig 21 쐏 Disconnect the red wire from the gas control TH or MV terminal to disable the gas control 쐄 Loosen the set screws holding the igniter sensor on the ground rod 쐂 Restore power and set thermostat to...

Page 18: ...ITS LOW VOLTAGE POWER SUPPLY 1K 2K 3K HYBRID CIRCUIT 1K1 1K2 3K2 2K2 3K1 ARC GAP SPARK GND BUR NER MV PV MV PV IGNITER SENSOR BURNER GROUND 1 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ALTERNATE LIMIT CONTROLLER LOCATION 3 0 AMP NONREPLACEABLE FUSE FUSE BLOWS WHEN VENT DAMPER IS PLUGGED IN INTERNAL WIRING EXTERNAL WIRING M3311 TH W YELLOW FUSE MAIN VALVE VALVE PILO...

Page 19: ...uilding doors and windows and all doors between the space in which the appliance is located and other spaces of the building Turn on clothes dryers Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers If after completing steps 7 through 12 it is believed sufficient combustion air is not ...

Page 20: ... by the transformer b Multiply the total current draw as computed above by 24 V to determine the total VA volt ampere required c The total VA volt ampere required should be equal to or less than the VA rating of the transformer d If the total VA volt ampere required is greater than the VA rating of the transformer the transformer must be replaced with a Class 2 transformer of adequate rating 6 Che...

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