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RM7800L1087; RM7840G1022,L1075; EC7840L1014 RELAY MODULES WITH VALVE PROVING

66-1162—2

APPENDIX B: RM7800L/40G,L, EC7840L IGNITION OPTIONS

Column 1 lists the ignition option.

Column 2 lists the figure letter that shows the connections for that option. The figure letters refer to the figures on pages 30–32.

Column 3 refers to the fuel changeover switch and how many connections or poles that would be required.

Table 17. RM7800L/40G,L, EC7840L Ignition Options

Ignition Options

Figure Letter

Fuel Changeover Poles

No Valve Proving

Single Fuel

MFEP 10s

MFEP 15s

DSI

Dual Fuel
MFEP timed for both

Gas 10s, Oil 10s

Gas 10s, Oil 15s

Gas 15s, Oil 10s

Gas 15s, Oil 15s

Gas 10s, Oil DSI

Gas 15s, Oil DSI

Gas DSI, Oil 10s

Gas DSI, Oil 15s

DSI both

Valve Proving on Gas

Single Fuel

MFEP 10s

MFEP 15s

Not Possible

DSI

Dual Fuel
MFEP timed for both

Gas 10s, Oil 10s

Gas 10s, Oil 15s

Gas 15s, Oil 10s

Not Possible

Gas 15s, Oil 15s

Not Possible

Gas 10s, Oil DSI

Gas 15s, Oil DSI

Not Possible

Gas DSI, Oil 10s

Gas DSI, Oil 15s

DSI Both

Gas Direct Spark Ignition during VPS Selection (powering terminal 17) automatically

chooses 4 second Ignition Trial Period, regardless of configuration resistor JR1 status
CAUTION! The above options are ONLY suggestions—BE SURE to check local

approval agencies for timings acceptable for your application.

Содержание 2RM7800L1087

Страница 1: ...received Valve proving does not occur Before Valve proving before run concurrent with Pre Purge After Valve proving occurs after the Run state before the device goes to Standby Concurrent with Post Purge if selected Both Valve proving occurs at both times Before and After noted above Split The main valve 2 MV2 high pressure seat test is performed at the Before time and the main valve 1 MV1 low pre...

Страница 2: ...840L label or the Specifications see Table 3 5 Limits and interlocks must be rated to simultaneously carry and break current to the ignition transformer pilot valve and main fuel valve s 6 All external timers must be listed or component recognized by authorities who have jurisdiction for the specific purpose for which they are used 7 For on off gas fired systems some authorities who have jurisdict...

Страница 3: ...ecommended grounding practices see Table 2 The Keyboard Display Module Data ControlBus Module for remote mounting or communications through a 203541 5 wire Connector or Communication Interface ControlBus Module must be wired in a daisy chain configuration 1 a 1 a 2 b 2 b 3 c 3 c The order of interconnection of all the devices listed above is not important Be aware that modules on the closest and f...

Страница 4: ... two wire twisted pair insulated for low voltage Communications Interface ControlBus Module 22 AWG two wire twisted pair with ground Belden 8723 shielded cable or equivalent 13 Vdc full wave rectified transformer power input 18 AWG wire insulated for voltages and temperatures for given application TTW60C THW75C THHN90C FLAME DETECTOR PLUG IN FLAME AMPLIFIER HIGH FIRE SWITCH PILOT VALVE MAIN VALVE ...

Страница 5: ...uctive coatings and protected against corrosion on mating surfaces Signal ground KDM Data ControlBus Module Communications Interface ControlBus Module Use the shield of the signal wire to ground the device to the signal ground terminals 3 c of each device Connect the shield at both ends of the chain to earth ground Terminal No Description Ratings 120 Vac 220 230 240 Vac G Flame Sensor Grounda Eart...

Страница 6: ...optional three inch minimum to both sides of the RM7800L 40L EC7840L for electrical signal voltage probes 3 Make sure no subbase wiring is projecting beyond the terminal blocks Tuck in wiring against the back of the subbase so it does not interfere with the knifeblade terminals or bifurcated contacts IMPORTANT The RM7800L 40L EC7840L must be installed with a plug in motion rather than a hinge acti...

Страница 7: ...GNITION TRANSFORMER 2ND STAGE FUEL VALVE OPTIONAL R W B R W B L1 HOT L2 1 8 9 10 L2 Q7800 15 SEC INTERRUPTED PILOT VALVE 2 1 3 3 HIGH FIRE PURGE SWITCH 2 RM7800 RM7840L EC7840L POWER 00 OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL FIRING RATE MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY POWER PREPURGE HOLD DRIVE TO HIGH FIRE PREPURGE HOLD DRIVE TO LOW FIRE POWER PILOT FLAME MAIN POWE...

Страница 8: ...IN VALVE 2 BURNER CONTROL R W B R W B L1 HOT L2 1 9 21 10 L2 Q7800 MV2 VALVE MAIN VALVE 1 2 1 3 4 3 HIGH FIRE PURGE SWITCH 2 VALVE PROVING SWITCH LIMITS BURNER CONTROLLER RM7800 RM7840L EC7840L POWER 00 OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL FIRING RATE MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY POWER PREPURGE HOLD DRIVE TO HIGH FIRE PREPURGE HOLD DRIVE TO LOW FIRE POWER PILO...

Страница 9: ...URE TEST 2 4 SEC 4 SEC 3 4 CONTROLLER LOCKOUT INTERLOCKS TEST IS RUN CONCURRENT WITH PRE PURGE TIME TEST IS RUN CONCURRENT WITH POSTPURGE IF POSTPURGE TIME IS ENABLED RM7800 40L EC7840L ONLY 3 4 BEFORE 3 SEC TEST TIME 3 SEC IGNITION TRIALS L1 17 17 7 MV2 21 MV1 9 VPS 16 VPS 16 PII 20 PII 20 AFTER 3 SEC TEST TIME 3 SEC STANDBY RUN TEST TIME TEST TIME L1 17 L1 7 MV2 21 MV1 9 VPS 16 VPS 16 PII 20 PII...

Страница 10: ...SPARK IGNITION OIL OR GAS IGNITION TRANSFORMER 2ND STAGE FUEL VALVE OPTIONAL R W B R W B L1 HOT L2 1 21 9 10 1ST STAGE FUEL VALVE L2 Q7800 3 15 OR 30 SEC INTERRUPTED INTERMITTENT PILOT VALVE 2 2 1 3 4 4 4 JUMPER WIRE FOR 30s MFEP RM7840G POWER OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL FIRING RATE MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY PREPURGE HOLD DRIVE TO LOW FIRE POWER PI...

Страница 11: ... IGNITION TRANSFORMER MV1 R W B R W B L1 HOT L2 1 9 10 L2 Q7800 MAIN VALVE 2 MV2 21 1 2 3 4 4 3 3 VALVE PROVING SWITCH 2 RECYCLE LIMITS BURNER CONTROLLER RM7840G POWER OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL FIRING RATE MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY PREPURGE HOLD DRIVE TO LOW FIRE POWER PILOT FLAME MAIN POWER PFEP 10 SEC 4 SEC IF JR1 CLIPPED PILOT FLAME MAIN POWER...

Страница 12: ...Before After Both and Split Never Device default as received in this case Valve Proving does not occur Before Valve Proving occurs concurrently with Pre Purge After Valve Proving occurs after the Run state before the internal Safety Relay dropout state and concurrent with Post Purge if configured Both Valve proving occurs at both times Before and After noted above Split The downstream seat high pr...

Страница 13: ... 0 psi 140 in wc 2 Divide the inlet pressure by two 2 5 psi 70 in wc for example 3 From column 2 in Table 6 find the operating range upper limit that is closest to but greater than the inlet pressure divided by two In the example given the possible selections from column 1 are the C6097A1129 and C6097A1137 with an operating range upper limit of 7 psi The C6097A1079 and C6097A1087 with an upper lim...

Страница 14: ... so gas line purging and System Checkout can be performed Then come back to set final operation configuration Be sure to conduct final VPS System checkout when Setup is complete Fig 13 Save Changes screen 9 Use the down arrow to save changes After pressing the down arrow Getting Data is displayed Fig 14 Valve Prove time screen This screen sets up how long the RM7800L 40L EC7840L will conduct the V...

Страница 15: ...g 18 Save Changes screen 15 Use the down arrow to save changes Getting Data is displayed momentarily The following steps are to confirm your selections Fig 19 Confirmation Acknowledgement screen The Valve Proving Test location is shown 16 Press ENTER Fig 20 Confirmation Correct screen 17 Use the down arrow to confirm correct NOTE Using the up arrow during this step will take you back to the beginn...

Страница 16: ...d has been exceeded 3 STANDBY Period a Flame signal is present after 240 seconds b Pre Ignition Interlock is open an accumulative time of 30 seconds c Interlock check feature is enabled L only with JR3 clipped and the Interlock String including airflow switch is closed for 120 seconds with controller closed d Ignition pilot valve intermittent pilot valve terminal is energized e Main valve terminal...

Страница 17: ... operating sequence when the operating control determines a call for heat is present Terminal 6 or Terminal 17 if Valve Proving is required The burner switch limits operating control and all microcomputer monitored circuits must be in the correct state for the RM7800L 40L EC7840L to continue into the PREPURGE sequence Normal Start Up Pre Purge The ST7800 purge timers provide 15 Pre Purge timings s...

Страница 18: ...minal 6 opens terminal 17 on VP applications indicating that the demand is satisfied or a limit opened Postpurge The RM7800L 40L EC7840L provides a programmable default is 15 seconds POSTPURGE following the completion of the RUN period The blower motor output is powered to drive all products of combustion and any unburned fuel from the combustion chamber It also supplies combustion air to burn fue...

Страница 19: ...Direct Spark Function because it turns on the main gas valve causing an accumulation of fuel in the burner The Run Test Switch is located on the top side of the RM7800L 40L EC7840L see Fig 29 The Run Test Switch allows the burner sequence to be altered as follows 1 In Pre Purge Drive To High Fire Position RM7800L 40L EC7840L the Run Test Switch when placed in the TEST position holds in PREPURGE wi...

Страница 20: ... EC7840L installed Equipment Recommended 1 Voltmeter 1M ohm volt minimum sensitivity set on the 0 300 Vac scale 2 Two jumper wires no 14 wire insulated 12 inches 304 8 mm long with insulated alligator clips at both ends 3 Ammeter can be used to verify valve loads connected to the wiring subbase General Instructions 1 Perform all applicable tests listed in Static Checkout Table 8 in the order liste...

Страница 21: ...nition spark if ignition transformer is connected to Terminal 8 2 Automatic pilot valve opens if connected to Terminal 8 NOTE Refer to wiring diagram of system being tested 1 Watch for spark or listen for buzz a Ignition electrodes are clean b Ignition transformer is okay 2 Listen for click or feel head of valve for activation a Actuator if used b Pilot valve 8 All 4 21 Same as test no 6 for conne...

Страница 22: ...Firing rate motor and transformer 15 All 15 13 1 Raise setpoint of Series 90 controller firing rate motor should drive toward open 2 Lower setpoint of Series 90 controller firing rate motor should drive toward closed 1 Series 90 Controller 2 Firing rate motor and transformer Final All CAUTION Equipment Damage Hazard Improper wiring can damage equipment On completing these tests open the master swi...

Страница 23: ...ame Establishing Period lost during the Main Flame Establishing Period or during RUN 1 Measure the flame signal If one exists verify that it meets specifications 2 Make sure that the flame amplifier and flame detector are compatible 3 Inspect the main fuel valve s and valve connection s 4 Verify that the fuel pressure is sufficient to supply fuel to the combustion chamber Inspect the connections t...

Страница 24: ...rminal main valve ignition or Main Valve 2 was on when it should be off WARNING Electrical Shock Hazard Fire or Explosion Hazard Can cause severe injury death or property damage Remove system power and turn off power supply 1 Remove system power and turn off fuel supply 2 Check wiring correct any errors 3 Inspect Pilot Fuel Valve s both places and connections 4 Reset and sequence the relay module ...

Страница 25: ...e device reapply power then reset and sequence the relay module 3 If fault does not repeat on the next cycle check for electrical noise being copied into the relay module through the external loads or possibly an electrical grounding issue 4 If the fault persists replace the relay module Code 6 3 Device Specific Fault with special OEM input circuits 1 Check wiring and operation of special OEM inpu...

Страница 26: ...valve train layout 3 Use appropriate Results column items to fill in the Valve Train Volume Formula and the Calculation of Valve Proving Test Time 4 Round up the time to the nearest second 5 The test time calculated is the time you will enter into the VPS Setup Calculation of Valve Train Volume X V1 V2 A X L 144 Calculation of Valve Proving Test Time Test Time 187 000 x P x X C Table 11 Valve Prov...

Страница 27: ...0267 V2 D Pipe Size NPT in 2 in NPT 14 3 356 A L Pipe Length ft 1 75 ft 1 75 L P Valve Inlet Pressure psig a 2 2 P C Burner Maximum Firing cf hr b 2 5 mbtu 2500 C Pipe Size NPT inches V4295 V4297A1013 V4297A1005 V48 V5055 V5097A1004 V5097A1012 3 8 0 0002 1 2 0 0002 3 4 0 0008 0 0093 0 0090 0 0010 0 0046 0 0066 1 0 0009 0 0093 0 0090 0 0010 0 0046 0 0066 1 1 4 0 0045 0 0093 0 0090 0 0035 0 0046 0 0...

Страница 28: ... hr for natural gas or by 2550 to get cf hr for LP gas Pipe Size NPT Inches Cross Sectional Area Sq In A 3 8 0 191 1 2 0 304 3 4 0 533 1 0 864 1 1 4 1 498 1 1 2 2 036 2 3 356 2 1 2 4 788 3 7 393 4 12 730 Item Description Information Lookup Table Results Formula Item V1 Upstream Valve Volume 12 V1 V2 Downstream Valve Volume 13 V2 D Pipe Size NPT in 14 A L Pipe Length ft L P Valve Inlet Pressure psi...

Страница 29: ...d for both Gas 10s Oil 10s D 2 Gas 10s Oil 15s E 2 Gas 15s Oil 10s F 2 Gas 15s Oil 15s G 2 Gas 10s Oil DSI H 3 Gas 15s Oil DSI I 3 Gas DSI Oil 10s J 3 Gas DSI Oil 15s K 3 DSI both L 2 Valve Proving on Gas Single Fuel MFEP 10s M MFEP 15s Not Possible DSI N Dual Fuel MFEP timed for both Gas 10s Oil 10s O 4 Gas 10s Oil 15s P 4 Gas 15s Oil 10s Not Possible Gas 15s Oil 15s Not Possible Gas 10s Oil DSI ...

Страница 30: ...7 T9 GAS MV OILMV L2 L1 IF EA IS USED THEN GAS OIL SWITCHING IS ALSO NEEDED HERE T8 PV T21 OP CONTROL M24122A 1 1 RM7840G CLIP JR2 E NO VP DUAL FUEL 15 SECOND MFEP LIMITS OP CONTROL GAS INTERLOCKS OIL INTERLOCKS T7 T21 T9 GAS MV OIL MV L2 L1 IF EA IS USED THEN GAS OIL SWITCHING IS ALSO NEEDED HERE T6 PV T8 M24123 1 1 RM7840G CLIP JR2 F NO VP DUAL FUEL GAS 10 SECOND MFEP OIL 15 SECOND MFEP LIMITS O...

Страница 31: ...7840G NOT POSSIBLE L NO VP DUAL FUEL BOTH DSI LIMITS OP CONTROL GAS INTERLOCKS OIL INTERLOCKS T7 T8 T9 GAS MV OIL MV L2 L1 IF EA IS USED THEN GAS OIL SWITCHING IS ALSO NEEDED HERE T6 T21 M24129A 1 1 RM7840 NO JUMPER SWITCH FUEL OFF TERMINAL 21 M24130 M VALVE PROVING GAS ONLY T21 MV2 T9 MV1 L2 T8 PV 10SEC LIMITS OP CONTROL T6 INTERLOCKS T7 L1 T17 JR2 CLIPPED IF JR2 IS CLIPPED THEN DSI IS DISABLED A...

Страница 32: ...V2 T9 OIL MV GAS MV1 L2 L1 IF EA IS USED THEN GAS OIL SWITCHING IS ALSO NEEDED HERE T8 PV JR2 INTACT THE SOFTWARE DOES NOT ENERGIZE T8 WHEN GAS IS SELECTED AND JUMPER 2 JUMPER 3 ON RM7840G IS INTACT TO INDICATE GAS DSI FOR A VALVE PROVING SYSTEM M24134A R VALVE PROVING GAS DSI OIL 10 SECOND MFEP LIMITS OP CONTROL T6 T17 OIL GAS OIL INTERLOCKS GAS INTERLOCKS T7 T21 GAS MV2 T9 OIL MV GAS MV1 L2 L1 I...

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