Yamatake-Honeywell 7800 Series Product Data Download Page 5

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7800 SERIES EC7885A/RM7885A RELAY MODULE

65-0203

Sequence Timing for Normal Operation

Device

Initiate

Standby

Ignition

Run

7885A

10 sec.

* STANDBY and RUN can be an infinite time period.

** IGNITION is the time the Start Switch is pushed and

limited to 15 minutes.

Approvals:

Underwriters Laboratories Inc. listed: File No. MP268,

Guide No. MCCZ on RM7885A only.

Mounting:

Q7800A: panel mount.
Q7800B: wall or burner mount.

Required Components:

Plug-in Flame Signal Amplifier, see Table 2.

Wiring Subbase:

Q7800A1005: panel mounted.
Q7800B1003: wall mounted.

Accessories:

Optional:

ControlBus 5-Wire Electrical Connector, part no.

203541.

COMBUSTION SYSTEM MANAGER™, part no.

ZM7850A1001.

Communication Interface Base Unit, part no.

Q7700B1004.

Communication Interface ControlBus Module, part no.

QS7800A1001.

Keyboard Display Module, part no. S7800A.
DATA CONTROLBUS MODULE™, part no.

S7810A1009.

Remote Reset Module, part no. S7820A1007.

Flame Simulators:

UV Flame Simulator, part no. 203659.
Rectification Simulator, part no. 123514A.

Remote Display Mounting Bracket, part no. 203765.
Remote Display Power Supply :

Plug-in, part no. 203968A.
Screw Terminal, part no. 203969A.

Replacement Parts:

Dust Cover, part no. 221729.
Electrical Access Slot Covers, part no. 221779

(Q7800B only).

POWER

PILOT

FLAME

MAIN

ALARM

RESET

(127)

5 (127)

M11135

(133)

BURNER

CONTROL

REMOVE ONLY FOR TERMINAL TEST ACCESS.

5-1/4

Fig. 1. Mounting dimensions of 7885A Relay Module and Q7800A Subbase in in. (mm).

Summary of Contents for 7800 Series

Page 1: ...Dynamic input check Dynamic safety relay test Dynamic self check logic Expanded safe start check Internal hardware status monitoring Tamper resistant timing and logic Lockout if Start Switch is held 15 minutes Access for external electrical voltage checks Application flexibility Communication interface capability Dependable long term operation provided by microcomputer technology First out annunci...

Page 2: ...e Voltage Supply L1 100 Vac 10 15 50 or 60 Hz 10 2 3 4 4 Alarm 100 Vac 1A pilot duty 5 Unused 6 Stop Station 100 Vac 9A 7 Unused 8 Pilot Valve 100 Vac 4 5A ignition and 50 VA pilot duty 4 9 Main Fuel Valve 100 Vac 2A pilot duty 5 10 Start Input 100 Vac 1 mA F 11 Flame Sensor 60 to 220 Vac current limited 12 Unused 13 Unused 14 Unused 15 Unused 16 Unused 17 Unused 18 Unused 19 Unused 20 Unused 21 U...

Page 3: ...A at PF 0 5 20A inrush 10 Start Input 200 Vac 4A at PF 0 5 20A inrush F 11 Flame Sensor 60 to 220 Vac current limited 12 Unused 13 Unused 14 Unused 15 Unused 16 Unused 17 Unused 18 Unused 19 Unused 20 Unused 21 Unused 22 Shutter 200 Vac 0 5A 1 The EC7885A must have an earth ground providing a connection between the subbase and the control panel or the equipment The earth ground wire must be capabl...

Page 4: ...raviolet Minipeeper C7027 C7035 C7044 b Dynamic AMPLI CHECK R7849Bc 8 or 3 sec Gas oil Ultraviolet Minipeeper C7027 C7035 C7044 b Purple Dynamic Self Checkf R7861A 8 sec Gas oil coal Ultraviolet C7061 Blue Dynamic Self Checkf R7886Ad 3 sec Gas oil coal Ultraviolet Adjustable Sensitivity C7076 a Order flame rod separately see holder Instructions b The C7012A C C7027 C7035 and C7044 Flame Detectors ...

Page 5: ...03541 COMBUSTION SYSTEM MANAGER part no ZM7850A1001 Communication Interface Base Unit part no Q7700B1004 Communication Interface ControlBus Module part no QS7800A1001 Keyboard Display Module part no S7800A DATA CONTROLBUS MODULE part no S7810A1009 Remote Reset Module part no S7820A1007 Flame Simulators UV Flame Simulator part no 203659 Rectification Simulator part no 123514A Remote Display Mountin...

Page 6: ...mounting dimensions in in mm 2 51 C7013A C7014A M1847 13 16 21 1 1 4 32 1 3 8 35 1 3 4 45 1 1 4 32 1 5 16 33 5 16 8 THREADED MOUNTING HOLES 2 10 32 UNF 1 25 FLAME ROD TARGET CERAMIC INSULATORS IGNITION ELECTRODE Q179C ONLY BRACKET M1983A 3 1 8 79 1 21 32 42 1 13 32 36 3 8 10 1 2 13 1 1 16 27 25 32 20 25 32 20 2 25 32 62 3 32 2 11 16 18 17 32 14 Q179 MOUNTING FLANGE 1 2 14 NPSM LEADWIRES FACEPLATE ...

Page 7: ...PROVED C7035A1064 HAS 1 11 BSP P1 INTERNAL THREADS DIN APPROVED C7035A1064 HAS 1 2 14 BSP F INTERNAL THREADS MODEL AVAILABLE WITH 12 FOOT 3 66 METER LEADWIRES 2 3 INSERTION DEPTH 6 FOOT 1 83 METER LEADWIRES 2 3 M1945B 2 5 8 67 1 1 2 38 31 32 25 4 1 8 105 1 3 16 30 C7035 MOUNTING BRACKET 6 FOOT 1 83 METER LEADWIRES 2 M1944B 3 5 8 92 1 2 13 9 16 14 7 8 22 3 8 10 1 27 64 36 C7044 4 102 4 102 3 8 INCH...

Page 8: ...rminal is powered during STANDBY the 7885A locks out on safety shutdown The 7885A must react to input changes but avoid the occurrence of nuisance shutdown events Signal conditioning is applied to line voltage inputs to verify proper operation in the presence of normal electrical line noise such as transient high voltage spikes or short periods of line dropout Signal conditioning is tolerant of sy...

Page 9: ... monitors all field input circuits including the flame signal amplifier The system distinguishes 33 modes of failure and detects and annunciates difficult to find intermittent failures Self Diagnostics add to the first out annunciation by allowing the 7885A to distinguish between field external device and internal system related problems Faults associated within the flame detection subsystem or 78...

Page 10: ...T DDL DDL COMMUNICATIONS INDICATES FEEDBACK SENSING TO RELAY STATUS FEEDBACK AND LINE VOLTAGE INPUTS FIELD WIRING INTERNAL WIRING IGNITION PILOT MAIN VALVE S 1K RELAY STATUS FEEDBACK AND LINE VOLTAGE INPUTS LIMITS 1K1 2K1 FLAME SIGNAL TEST PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED RS485 1 2 3 L1 HOT L2 3 6 2K2 4K1 10 8 9 4K 5K 3K 2K F G 22 1 ALARM 3K1 4 L2 1 M11184 C D A B S445A...

Page 11: ...LOT FOR DIRECT SPARK IGNITION OIL OR GAS ALARM LIMITS L1 HOT L2 1 MAIN VALVE Q7800 2 L2 4 C D A B S445A START STOP STATION STOP START DPST ALARM SILENCING SWITCH INTERNAL JUMPER 100V 50 OR 60 HZ RM7885 200V 50 OR 60 HZ EC7885 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS 100V ALARM RM7885 200V ALARM EC7885 1 2 3 3 8 9 ...

Page 12: ...ted in series with the R482B Relay This assures that the burner will lightoff in the low fire position before the controller can take command of the burner M11179 G L2 3 5 6 7 8 9 10 F L1 13 14 15 16 17 18 19 20 21 22 12 MASTER SWITCH IGNITION LOW FIRE MOTOR END SWITCH INTERMITTENT PILOT 100V 50 OR 60 HZ RM7885 200V 50 OR 60 HZ EC7885 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION A...

Page 13: ...ng two or more pilots when required for safe ignition of one burner M11181 G L2 3 5 6 7 8 9 10 F L1 13 14 15 16 17 18 19 20 21 22 12 MASTER SWITCH IGNITION INTERMITTENT PILOT 100V 50 OR 60 HZ RM7885 200V 50 OR 60 HZ EC7885 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS 100V ALARM RM7885 200V ALARM EC7885 ALARM L1 HOT L2 Q7800 ...

Page 14: ...elay M11180 G L2 3 5 6 7 8 9 10 F L1 13 14 15 16 17 18 19 20 21 22 12 MASTER SWITCH IGNITION LOW FIRE MOTOR END SWITCH 100V 50 OR 60 HZ RM7885 200V 50 OR 60 HZ EC7885 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS 100V ALARM RM7885 200V ALARM EC7885 ALARM L1 HOT L2 Q7800 4 1 2 3 3 2 1 LIMITS STOP S445A START STOP STATION START...

Page 15: ...eset Module or Communication Interface Base Unit refer to Specifications forms 65 0090 65 0091 65 0095 or 63 2278 respectively 2 Disconnect the power supply from the main disconnect before beginning installation to prevent electrical shock and equipment damage More than one disconnect may be involved 3 All wiring must comply with all appropriate electrical codes ordinances and regulations Wiring w...

Page 16: ...ads A separate power supply circuit may be required for the 7885A with the required disconnect means and overload protection added 10 Check all wiring circuits and complete Static Checkout Table 4 before installing the 7885A on the subbase 11 Install all electrical connectors 12 Restore power to the panel ASSEMBLY Mounting 7885A NOTE For installation dimensions see Fig 1 or 2 Relay Module Mounting...

Page 17: ...board is fully inserted into the receptacle and then push the amplifier toward the 7885A retaining clasp 4 Verify the amplifier is firmly in place 5 Perform all required checkout tests Fig 14 Dust Cover mounting Installing The Flame Detector NOTE Table 2 and Fig 16 list the flame detection systems available for use with the 7885A Make sure the correct combination of amplifier and flame detector s ...

Page 18: ...S ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE WHITE MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS POLARITY SENSITIVE REVERSING THE LEADS EVEN MOMENTARILY CAN DAMAGE OR DESTROY THE UV TUBE CAUTION FLAME DETECTOR LEADS ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE YELLOW MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS ...

Page 19: ...is energized and power is applied to terminal 10 of the 7885A If all microcomputer monitored circuits are in the correct state the 7885 will initiate a Safe Start Check and Ignition Trials Safe Start Check Two Seconds The 7885A conducts a two second Safe Start Check as it verifies that critical loads are in the proper state prior to start up and that no flame is present in the combustion chamber I...

Page 20: ...s motors and other devices are operating properly NOTE Do not perform a dielectric test with the 7885A installed Internal surge protectors will break down and conduct a current This could cause the 7885A to fail the dielectric test or possibly destroy the internal lightning and high current transient protection components Equipment Required 1 Voltmeter 1M ohm volt minimum sensitivity set on the 0 ...

Page 21: ...is on 2 Open the master switch before removing or installing the 7885A 3 Make sure all manual fuel shutoff valve s are closed before starting the initial lightoff check and the Pilot Turndown Tests 4 Do not put the system in service until you have satisfactorily completed all applicable tests in this section and any others required by the equipment manufacturer CAUTION If an 7885A is replaced with...

Page 22: ...nto the Com jack of the flame amplifier 4 Allow a few seconds for the meter reading to stabilize 5 When using AMPLI CHECK or shutter check amplifiers you should read the average stable voltage disregarding the highs and lows caused by the self checking operation 6 The meter reading must be as specified in Table 5 after all tests are completed and all adjustments are made As an option the flame sig...

Page 23: ... clean e Close the master switch press the Start Switch and observe the spark f After a continuous spark is obtained release the Start Switch and open the master switch Add a jumper from the subbase terminal 10 to the pilot terminal 8 g Close the master switch and press the Start Switch to energize both the ignition transformer and the pilot valve h If the pilot does not ignite and if the ignition...

Page 24: ...witch 11 If necessary repeat steps 8 9 and 10 to establish the first stage burner flame 12 When the first stage burner flame is established release the Start Switch Make burner adjustments for flame stability and input rating If a second stage is used proceed to step 15 13 Shut down the system by pressing the Stop Switch Make sure the burner flame goes out and make sure all automatic fuel valves c...

Page 25: ...ration occurs the condition must be corrected Add an orifice plate in front of the cell to restrict the viewing area You can also try to lengthen the sight pipe or decrease the pipe size diameter Continue adjustments until you eliminate hot refractory saturation Hot Refractory Hold in Test Rectifying Photocell or All Infrared Detectors Test to be sure hot refractory is not delaying the flame detec...

Page 26: ...anometer or pressure gauge and turn up the pilot gas flow to meet equipment manufacturer recommendations 13 If used remove the bypass jumpers from the subbase terminals limits control or switches 14 Run the system through another cycle to check for normal operation 15 Return the system to normal operation Ignition Interference Test All Flame Rods Test to be sure that a false signal from a spark ig...

Page 27: ...ponse Test All Ultraviolet Detectors Test to be sure that the ignition spark is not actuating the FLAME LED 1 Close the pilot and main burner manual fuel shutoff valve s 2 Press the Start Switch Ignition spark only will occur but the flame signal should not be more than 0 5 Vdc and the FLAME LED should not turn on 3 If the flame signal is higher than 0 5 Vdc and the FLAME LED does come on consult ...

Page 28: ...nt status and historical status of the equipment such as Flame Signal Total Cycles Total Hours Fault History Diagnostic Information and Expanded Annunciator Terminal Status if used With this information most problems can be diagnosed without extensive trial and error testing Information available in the Diagnostic Information file includes Device Type Device Suffix Software Revision Manufacturing ...

Page 29: ...rner sequence does not advance into STANDBY until the line voltage is at a sufficient level for proper operating parameters STANDBY The LED indicates the burner status POWER The burner is in STANDBY after INITIATE and waiting for the Start command or the Stop Switch to be pressed If a Start demand is present for burner operation the burner sequence does not advance from STANDBY to PILOT IGNITION u...

Page 30: ...7800 SERIES EC7885A RM7885A RELAY MODULE 65 0203 30 ...

Page 31: ...7800 SERIES EC7885A RM7885A RELAY MODULE 65 0203 31 ...

Page 32: ... Wanchai Hong Kong Home and Building Control Honeywell Limited Honeywell Limitée 155 Gordon Baker Road North York Ontario M2H 3N7 Honeywell Latin American Division Miami Lakes Headquarters 14505 Commerce Way Suite 500 Miami Lakes FL 33016 Helping You Control Your World 65 0203 G R 4 97 Printed in U S A Home and Building Control Honeywell Inc Honeywell Plaza P O Box 524 Minneapolis MN 55408 0524 ...

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