Fireye MEC120, MEC120R, MEC120D, MEC120RD, MEC120C Series Manual

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

MC-5000

MAY 10, 2017

FIREYE

MODULAR

MicroM

FLAME SAFEGUARD CONTROLS

APPROVED

WARNING: Selection of this control for a particular application should be made by a competent professional, licensed by a state or other government agency . Inappropriate application of this product could result in an unsafe condition hazardous to life and property.

DESCRIPTION

The Fireye MicroM Series Flame Safeguard Control is a compact, microprocesso r based, modular burner management system designed to provide automatic ignition and continuous flame monitoring for commercial sizes of heating and process equipment firing any type of fuel.

The MicroM is designed to be backward compatible with existing TFM, UVM and M-Series II controls. The MicroM MEC120 and MEC230 chassis with the appropriate MEP100, MEP200 and MEP500 series programmers provide operation similar to its predecessors and is usually directly interchangeable. The MEC320 and MEC480 chassis with the appropriate MEP300, MEP400 and MEP600 series programmers provide additional enhancements such as early spark termination, pilot proving, and interrupted pilot.

The advantages of the MicroM are zero dependence on discrete components previously used for timing functions. The MicroM, through the use of micro-controller technology, incorporates smart diagnostic LED's, smart reset function for multi-burner applications, optional alpha-numeric display output (ED510), and serial communications via a Modbus or E500 Communication Interface. The MicroM system also provides additional amplifier selections. Along with the standard UV and Flame Rod amplifiers are UV self-check, Infrared, Cadmium Sulfide and a dry contact amplifier for use with the Fireye Phoenix scanner. All amplifiers are available with flame failure response times of

0.8 seconds or 3 seconds nominal (4 second maximum) and each provide a set of test jacks with a uniform range of 0-10 VDC for the measurement of flame signal intensity.

A complete MicroM system includes the appropriate flame detector, plug-in amplifier and programmer modules which connect into a standard chassis and wiring b ase. Interchangeable programmer and amplifier modules allow for complete versatility in selectio n of control function, timing and flame scanning means. Functions such as relight, recycle, non-recycle, two stage capability, nonrecycle air flow, proof of air flow open at start, purge timing, early spark termination, pilot proving and pilot cutoff are determined by the appropriate programmer module. Type of flame scanner (UV, Repetitive UV Self-Check, Flame Rod, IR or Cadmium Sulfide or dry contact) and the flame failure response time (FFRT) are determined by the amplifier module. Optional plug-in daughter boards provide additional features such as remote reset, alpha-numeric display and serial communications.

The MicroM programmers are micro-controller based modules that control the sequence of operation and also interface with plug-in amplifiers, meter boards, display drivers and external communication devices. The programmers are available in an assortment of configurations necessary to resolve the application requirement. Current families of programmers for use with the MEC120 and

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MEC230 type chassis include the MEP100, MEP 200 and MEP500 series. Programmers for use with

NOTE: The individual MicroM modules, i.e. MEC chassis, MEP programmers and amplifiers are not interchangeable with M-Series II modules, i.e. MC chassis, MP programmers and amplifiers.

the MEC320 and MEC480 type chassis include the MEP300, MEP400 and MEP600 series. Some programmer modules are equipped with a series of dipswitches to select Purge Timing, Pilot

Trial for Ignition (PTFI) timing, Proof of Air flow open at start, Po st Purge, Recycle and Non-Recycle operation. LED indicators on the programmer modules indicate the current operating status of the control and during a lockout condition displays the fault as a cod ed sequence, simplifying the troubleshooting of a shutdown.

In the event of pilot ignition failure, or following a safety shutdown, the control locks out, activati ng an alarm circuit and displays the cause of lockout on the integrated LED’s and on the optional ED510 display. Unless otherwise specified, manual reset is required. Remote reset is available on the MEC120R, MEC120RC, MEC320RD, MEC230RC, MEC320R, MEC320RC and MEC320RD chassis. A detailed description of the various programmer, amplifier and chassis modules is found later in this document. A “run-check” switch, provided to assist in testing size, position and stabilization of the pilot, is provided on some sp ecific m ode ls and all MEP5 00 and MEP600 series p rogram mers.

Modular MicroM controls incorporate a safety checking circuit that is operative on each start. If flame (real or simulated) is detected prior to a start or during purge, the fuel valves will not be energized and the unit will lock out.

The modular MicroM controls use the same wiring base as the Fireye UVM, TFM and M- Series II controls and are designed to be interchangeable with most models with litt le or no rewiring. See INSTALLATION OF CONTROL, SCANNERS AND FLAME DETECTORS (page 8 and 47) for temperature and wiring requirements.

SPECIFICATIONS

Supply: 120 VAC (min. 102, max. 132) 50/60 Hz. (MEC1XX, MEC3XX)

230 VAC (min. 196, max. 253) 50/60 Hz. (MEC2XX, MEC4XX)

Power Consumption:12 VA (Operating) Shipping Weight (Appr ox): 3 lbs (1.4 kg) Operating Temperature:-40°F (-40°C) to 140°F (60°C)

Table 1: AMBIENT TEMPERATURE LIMITS

Control 140°F 60°C - 40°F - 40°C

Scanner UV1A, UV2, UV8A, 45UV3, UV90

45UV5-1007, 45UV5-1009; 55UV5-1007, -1009

Photocell 45CM1 (OBSOLETE) 165°F 74°C - 40°F - 40°C

Flame Rod (Tip 2460 F)

48PT2 140°F 60°C -40°F -40°C

CSIA5 140°F 60°C -40°F -40°C

MAXIMUM MINIMUM

200°F 93°C - 40°F - 40°C

1500°F 816°C - 40°F - 40°C

Table 2: LOAD RATINGS: All Ratings are 120V, 60 Hz

Fireye Terminal Typical Load Maximum Rating @120V 60 Hz

3 or 4

Individual or combined

5 Main Fuel Valve(s)

8 Motor or contactor

A Alarm

Table 3: ALTERNATIVE LOAD RATINGS:

COMBINATION NUMBER PILOT FUEL TERMINAL 3IGNITION TERMINAL 4 MAIN VALVE TERMINAL

Pilot valve(s)

Solenoid valve

Ignition Transformer

Minimum load requirement = 100mA

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125 VA pilot duty (solenoid valve) plus 250 VA (Transformer)

125 VA pilot duty (solenoid) or 25 VA pilot duty (solenoid) and 400 VA (opening) motorized, 250 VA hold

Terminal 8 rated to energize and de-energize 9.8 FLA,

58.8 LRA on safety lockout.

125 VA, pilot duty

1 C

2 B

3 NO LOAD

4 E

5 NO LOAD

6 D

7 D

8 NO LOAD

Table 4: COMPOSITION OF EACH COMBINATION

ABCDE

4.5A Ignition 50 VA Pilot Duty plus 4.5A ignition

180 VA Ignition plus motor values with: 600VA inrush., 360 VA open, 250 VA hold

NO LOAD E

A E

A D

2A Pilot Duty 65 VA Pilot Duty

plus Motor valves with: 3850 VA in rush., 700 VA open, 250 VA hold

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HOLE FOR

3/4”

SIGHTING

PIPE

SCREW, 1/4”-20 THD

2” (51) CLEARANCE REQUIRED TO REMOVE

2”

(51)

1/2”-14

STRAIGHT PIPE THD

8 1/4”

(210)

3/8”-18 NPT FOR

PURGE AIR CONNECTION

4” (102)

1 11/16”

HEX (43)

1”-11 1/2 NPT

FOR SIGHT

TUBE

UV2 UV SCANNER

UV SELF-CHECK

SCANNER

TYPE 45UV5

MODEL 1009

UV1A UV SCANNER

72” LEAD

2 7/8”

(73)

2”

(50.8)

1 5/8” (41)

3 1/4” (82)

UV SCANNER

Type: 45UV3 Model: 1050

2 3/8” (60.3)

1 3/16”

(30)

1/2”

(12.7)

”L”

1/2”-14 NPT

13/16” HEX

(20.6)

15/16” HEX

(23.8)

”L” LENGTH AS SPECIFIED: 12”, 18”, 24” (304.8, 457.2, 609.6)

69ND1 FLAME ROD

2 1/2” (63.5)

5.04”:(128)

WHEN ASSEMBLED

1 1/4”

DIA.

1.063” DIA.

HEAT INSULATOR

.345” (8.7)

TC-ER CABLE

1/2”-14 TAPERED PIPE THD

1/2”-14

STRAIGHT PIPE THD

48PT2-1000 SERIES INFRARED SCANNER

2 1/2” (63.5)

3.96” (100.6)

WHEN ASSEMBLED

1 1/4”

DIA.

1.02” DIA. (26.0)

HEAT INSULATOR

.345” DIA. (8.7) TC-ER CABLE

1/2”-14 TAPERED PIPE THD

2.13”

(54.0)

1.46”

(37.1)

13/32” (10)

48PT2-9000 SERIES INFRARED SCANNER

UV90 SCANNER

5 3/16”

MOUNTING BASE

5 5/16”

4”

1/2”’

1/2”

3/16” DIA. MOUNTING

HOLES (4)

KNOCKOUTS (12)

FOR 1/2” CONDUIT

μΜ

All dimensions in inches (millimeters in parentheses).

2/N

3/16” MOUNTING

HOLES

(4)

0.880"

(22.3MM)

1.90

(48.2MM)

1.406"

(35.7MM)

1.48"

(37.6MM)

0.875"

(37.6MM)

3.75"

(95.7MM)

0.5"

(12.7MM)

UV90 MOUNTING BLOCK

(Included with Scanner)

2.58”

(50.8)

36” (1m APPROX.)

TC-ER CABLE

3/8” PIPE THREAD

1.06” DIA. (27.0)

2.53” (64.3)

1/2-14 STRAIGHT

FEMALE PIPE THREAD

1.06” DIA (27.0)

36” TC-ER CABLE (UV-1A-3) 72” TC-ER CABLE (UV-1A-6)

2.5”

(63.6)

APPROVALS

WARNING: This equipment is a Class B digital apparatus which complies with the Radio Interference Regulations, CRC c.1374.

CAUTION: Published load ratings assume that no control be required to handle inrush current more often than once in 15 seconds. The use of control switches, solenoids, relays, etc. which chatter will lead to premature failure. It is important to run through a test operation (with fuel shut off) following the tripping of a circuit breaker, a blown fuse, or any instance of chattering of any external current consuming devices.

WARNING: Selection of programmer and amplifier type for a particular application should be made by a competent professional, such as a Boiler/Burner technician licensed by a state or government agency, engineering personnel of the burner, boiler or furnace manufacturer (OEM) or in the performance of duties based on the information from the OEM.

WARNING: This equipment generates and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference in which case the user, at his own expense, will be equipped to take whatever measures that may be required to correct the problem.

In order for the MicroM to gather and retain statistical and historic data such as burner hours, burner cycles, system hours and average flame signal, it is necessary that Terminal 1 be powered at all times. Removing power from Terminal 1 at the end of the firing cycle causes all data gathered during the previous 16 hours or last 9 cycles to be lost. For conversions or upgrades from older TFM or M-Series II controls that use MART1 amplifiers, it is necessary that Terminal 1 be directly powered with 120 VAC.

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Underwriters Laboratories Inc.: MCCZ File MP 1537

Controls, Primary Safety - Listed MCCZ2 File MP1537 Controls, Primary Safety - Component MCCZ7 File MP1537 Controls, Primary Safety Certified for Canada MCCZ8 file MP1537 Controls, Primary Safety Certified for Canada - Component

Factory Mutual System (FM) Approved UL approval does not apply to 230VAC operations.

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ORDERING INFORMATION

MicroM Chassis Types (For use with MEP1XX, MEP2XX, and MEP5XX, includes dust cover)

MEC120 120 VAC input with standard plug-in board. MEC120R 120 VAC input with remote reset capability. MEC120D 120 VAC input with alpha-numeric display interface to ED510. MEC120RD 120 VAC input with alpha-numeric display interface to ED510 and remote reset capability. MEC120C 120 VAC input with interface to E500 Communication Interface and Modbus capability. MEC120RC 120 VAC input with remote reset capability, alpha-numeric display interface to ED510, interface to E500 Communica-

MEC230 230 VAC input with standard plug-in board. MEC230RC 230 VAC input with remote reset capability, alpha-numeric display interface to ED510, and Modbus capability.

MEC320 120 VAC input with standard plug-in board. MEC320R 120 VAC input with remote reset capability. MEC320D 120 VAC input with alpha-numeric display interface to ED510. MEC320RD 120 VAC input with alpha-numeric display interface to ED510 and remote reset capability. MEC320C 120 VAC input with interface to E500 Communication Interface and Modbus capability. MEC320RC 120 VAC input with remote reset capability, alpha-numeric display interface to ED510, interface to E500 Communica-

MEC320TS 120 VAC input with display interface to ED510, Modbus interface and auxiliary relay output with dry contact for con-

MEC480 230 VAC input with standard plug-in board. MEC480RC 230 VAC input with remote reset capability, alpha-numeric display interface to ED510, and Modbus capability.

tion Interface and Modbus capability.

MicroM Chassis Types (For use with MEP3XX, MEP4XX, and MEP6XX, includes dust cover)

tion Interface and Modbus capability.

troller interface (MED8).

MicroM Programmer Models (For use with MEC120 and MEC 230 Chassis)

MEP100 Relight operation, 10 sec. PTFI. MEP101 Relight operation, allow flame signal until 60 seconds after interlock closed. MEP102 Non-recycle on flame fail, 5 second PTFI. MEP103 Fixed 10 second SISP*, 10 second MTFI, re-try once on igniter failure, fixed 30 second post purge. MEP104 Non-recycle on flame fail, 10 second PTFI. MEP105 Non-recycle on flame fail, lockout on air-flow open with flame present, 10 second PTFI. MEP106 Same as MEP100. 12 second pre-purge, added reset from lockout via line voltage. MEP107 Same as MEP100. Force 5 minute purge delay after main flame fail. MEP108 Same as MEP100 with 0 second purge, 15 second PTFI, non-recycle on flame fail. Not FM approved. MEP109 Immediate ignition and pilot, 10 second fixed PTFI, 10 second MTFI, intermittent pilot, non-recycle on flame fail. MEP100P Relight operation, 10 sec PTFI, fixed 15 second post purge. MEP130 Same as MEP100, 30 second PTFI. Not FM approved. MEP230 Selectable purge timing (7, 30, 60, 90 sec.) 10 sec PTFI timing, recycle/non-recycle, post purge, prove air open at start. MEP230H Same as MEP230 with 8 second pilot stabilization. MEP235 Same as MEP230 with lockout on air flow open 10 seconds after the start of a cycle, selectable recycle/nonrecycle lockout

MEP236 Same as MEP230 with additional 6 second igniter on time with main fuel. To be used with intermittent pilot only. MEP237 Same as MEP230 with fixed PTFI timing and check/run switch. Used with MEDC2 amplifier to provide operation with 85

MEP238 Same as MEP230. Ignition de-energized 3 seconds after pilot flame detected. Provides 8 second pilot stabilization period. MEP290 Same as MEP230 except selectable post purge is 0 or 90 seconds. MEP560 Same as MEP230H, 10 second main trial for ignition, run-check switch. MEP561 Same as MEP560 without 8 second pilot stabilization. Selectable purge time of 7s, 10s, 15s, 30s. MEP562 Same as MEP560, lockout on loss of air flow, non-recycle operation only. MEP564 Same as MEP560. Selectable purge time of 7s, 30s, 60s, 240s. MEP536 Same as MEP230, 10 second main trial for ignition, run-check switch, will not lockout on air flow open during purge. MEP537 Same as MEP536 except provides one recycle on main flame failure.

*Spark Igniter Sensing Period

on air flow open after flame is proven and dedicated lockout after loss of flame.

Series (Phoenix) and 95 Series (InSight) scanners.

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MicroM Programmer Models (For use with MEC320 and MEC 480 Chassis)

MEP300 Relight operation, 10 sec. fixed PTFI, 5 sec.pilot proving period, 5 second MTFI. lockout on flame fail during PTFI, pilot

MEP304 Non-recycle on flame fail, 5 sec. purge, 10 sec.fixed PTFI, 5 sec. pilot proving, 10 sec.MTFI, interrupted pilot, early

MEP335 Non-recycle on flame fail, 30 second purge, 35 second hot surface ignition on terminal 4, 3 second PTFI on terminal 3,

MEP397 Recycle on main flame fail, 15 sec. purge, 7 second fixed PTFI, 5 sec. pilot proving 5 sec. MTFI, early spark termination

MEP437 Recycle once on main flame failure, selectable 5 or 10 sec. fixed PTFI, selectable interrupted or intermittent pilot, 5 sec.

MEP696 Provides 30 sec. pre-purge, lockout on airflow after 10 sec., 10 sec. PTFI, 5 sec. pilot proving, early spark termination,

MEP697 Provides dip-switch selectable pre-purge, selectable air flow proving at startup, selectable post purge, selectable 5/10

MEUV1 UV amplifier, 0.8 second FFRT, uses UV1A, UV2, UV8A, UV90 and 45UV3-1050 scanners. MEUV4 UV amplifier, 3 second FFRT, uses UV1A, UV2, UV8A, UV90 and 45UV3-1050 scanners. MEUVS1 UV Self-Check amplifier, 0.8 second FFRT, uses 45UV5-1009 scanner. MEUVS4 UV Self-Check amplifier, 3 second FFRT, uses 45UV5-1009 scanner. MERT1 Flame Rod amplifier, 0.8 second FFRT, uses 69ND1. MERT4 Flame Rod amplifier, 3 second FFRT, uses 69ND1. MEIR1 Infrared amplifier, 0.8 second FFRT, uses 48PT2 scanner. MEIR4 Infrared amplifier, 3 second FFRT, uses 48PT2 scanner. MECD1 Cadmium sulfide amplifier, 0.8 second FFRT, uses CS1A5 scanner. MECD4 Cadmium sulfide amplifier, 3 second FFRT, uses CS1A5 scanner. MEDC2 Contact input amplifier for use with MEP237 to provide operation with 85 Series (Phoenix) and 95 Series

proving and MTFI. Recycle on air flow open. No post purge. Reset on line voltage.

spark termination.

5 second pilot proving period, intermittent pilot, 15 second post purge. Manual reset only.

and interrupted pilot. Recycle on air flow failure. No post purge, run/check switch. Reset on line voltage.

MTFI, selectable purge time to 240 seconds, main valve proof of closure, 15 sec. post purge. Reset on line voltage.

5 sec. MTFI, interrupted pilot, selectable recycle/non-recycle on flame fail, 60 sec. post purge, selectable baud rate for communications, output for external controller operation.

sec. PTFI, 5 sec. pilot proving early spark termination, 5 sec. MTFI, interrupted pilot, selectable recycle/non recycle on flame fail, output for external controller operation.

MicroM Amplifier Models:

(InSight) scanners

Optional Plug-In Board Modules:

MED1 Standard local reset switch.

MED2 Same as MED1 with display output.

MED3 Same as MED1 with remote reset.

MED4 Same as MED1 with display output and remote reset.

MED5 Same as MED1 with display output and RS485 communications.

MED6 Same as MED1 with display output, remote reset and RS485 communications.

MED7 Same as MED1 with RS485 communications.

MED8 Same as MED1 with display output, RS485 Modbus interface and auxiliary relay output

with normally closed dry contact for controller interface.

MED9 Same as MED1 with display output, RS485 Modbus interface and auxiliary relay output

with normally open dry contact for controller interface.

Wiring Base (Common for all Controls):

61-3060 Closed wiring base, surface mounting.

61-5042 Open wiring base, cabinet mounting.

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Accessories

CAUTION: The UV1A, UV2, UV8A, UV90 and 45UV3 ultra-violet flame scanners and associated amplifier modules are non self-checking UV systems and should be applied only to burners that cycle often (e.g.: a minimum of once per 12 hours) in order for the safety checking circuit to be exercised. If component checking is required during burner operation for constantly fired burners, utilize the self-checking ultra-violet flame scanners (45UV5) with associated amplifier module (MEUVS1, MEUVS4) or the infrared flame scanner (48PT2) with associated AutoCheck amplifier (MEIR1, MEIR4).

ED510 Two line by 16 character, back lit LCD display with keypad.

ED580-2, -4, -8 Remote display cable with RJ45 connection in 2, 4 or 8 foot long lengths. To be used with the appropriate daughter

EC485 RS232 to RS485 converter with power supply and RJ12 jack.

UC485 USB to RS485 converter. Supplied with USB cable.

SMDK-1004 Serviceman’s display kit used for diagnosing MicroM system. Consists of ED510 equipped with back plate, MED

129-145-1, -2, -3 ED510 remote display mounting kit with 4’, 8’ or 2’ cable respectively. Provides NEMA 4 protection.

IT1000 Monitoring device using cellular networks. Provides various reporting methods

board.

daughter board and ED580-4.

FLAME SCANNERS

For a complete system, choose one of each of the following:

- Chassis - Flame Detector

- Programmer Module - Wiring Base

- Amplifier Module

INSTALLATION OF CONTROL, SCANNERS AND FLAME DETECTORS

WARNING: Installer must be trained and qualified. Follow the burner manufacturer’s instructions, if supplied. Otherwise, proceed as follows:

WARNING: Controls require safety limits utilizing isolated mechanical contacts. Electronic limit switches may cause erratic operation and should be avoided.

Care must be taken to NOT route the high energy ignition wire in close proxim-

ity to the flame sensor wiring, particularly when using MERT amplifier.

Wiring Base

Mount the wiring base on the burner or on a panel. The location should be free from excessive vibration and within the specified ambient temperature rating. The base may be mounted in any angular position.

All wiring should comply with applicable electrical codes, regulations and local ordinances. Use moisture resistant wire suitable for at least 90 degrees C. Good electrical wiring practice should be followed to ensure an adequate ground system. Refer to Fireye Service Note SN-100 separately and General Grounding Rules later in this document for grounding methods.

A good ground system should be provided to minimize the effects of AC qu ality problems. A properly designed ground system meeting all the safety requirements w ill ensure that any AC voltage quality problems, such as spikes, surges and impulses have a low impedance path to ground. A lo w impedance path to ground is required to ensure that large currents involved with any surge voltages will follow the desired path in preference to alternative paths, where extensive damage may occur to equipment.

Circuit recommendations are found on pages 38 through 43. Consult the factory for assistance with non-standard applications.



INSTALLING THE PROGRAMMER AND AMPLIFIER MODULES

WARNING: Remove power from the control before proceeding.

PROGRAMMER

AMPLIFIER

WARNING: Turn off the power when installing or removing the control.

WARNING: Disconnect power before servicing.

FIGURE 1. .

Select the appropriate programmer and amplifier modules for your application. R emove the dust cover from the chassis. Insert the amplifier module into the slot in the corner of the chassis and gently push the module into position. Insert the pro gramme r module int o the slot at the right sid e of the chassis and gently push the module into position.

NOTE: Refer to programmer dipswitch settings on page 11 for the proper setting of the dipswitches for those programmers with this feature.

Replaceable Fuse

The chassis modules are designed with a field replaceable fuse. The fuse is located on the printed circuit board below the transformer. In the event the fuse becomes OPEN, the Operating Control, PTFI, and Flame LED’s will light. However , KL or KF (Wiring Arrangements section on pages 33 through

38) will not be energized and the control will lock out and indicate Lockout, Check Blown Fuse. The fuse will blow as a result of an overload condition on Terminals 3, 4, or 5. To replace the fuse, remove power from the system and using a small screwdriver or similar tool, install a Fireye replacement fuse (P/N 23-197).

FOR MEC230, ORDER FIREYE REPLACEMENT FUSE P/N 23-198 .

FIGURE 2.

Replaceable Fuse Location

PROGRAMMER DIPSWITCH SETTINGS

NOTE: The dipswitch settings become permanently stored within the programmer’s eeprom memory after 8 hours of continuous electrical operation.

The first 8 hours of continuous operatio n is determined from the value of system hours being accumulated by the MicroM. System hours are stored to memory (eeprom) automatically every 1,000 minutes or at the occurrence of a lockout. Therefore, any lockout that occurs during the first 8 hours will cause the system hour value to become the time when the last lockout occurred. If power is removed and restored, the continuous 8 hours feature will be reduced by the time when the lockout occurred.

This allows sufficient opportunity to make the appropriate selection, test and checkout the system. Once stored, the settings cannot be altered.

The MEP200 and MEP500 series programmers have a series of 6 dipswitches (see Figure 3) whic h allow the user to program the purge timing, trial for ignition timing, enable post purge, enable proof of air flow open at start and select recycle/non-recycle operation.



MicroM Programmer Dip Switch Configuration

(see bulletin MC-3200 for MEP696 settings)

SWITCH FUNCTION NOTES

654321 STD MEP561MEP564

Note: C refers to switch closed position, closed position is when the switch is toward the printed

DISABLED POST*

15 SECONDS

5 PTFI

DISABLE PROVE AIR

ENABLE

10 30

15 60

30 240

PURGE

TIMEO

FLOW OPEN

AT START

RECYCLE

NON-RECYCLE

PURGE

TIME

SECONDS

* The MEP290

Programmer

module has

selectable post purge

of 90 seconds.

circuit board. O refers to switch open position or when the switch is moved away from the printed circuit board. Indicating arrow on top of programmer cover points toward closed position.



FIGURE 3.

LED

INDICATORS

SWITCHES

(shown in closed or OFF position)

DIP

Once the switches are set, they become permanently stored after 8 hours of continuou s operation or they can be manually set through the use of the optional ED510 display. Refer to the section using the optional ED510 display for detailed information.

Where applicable, each MicroM programmer is shipped with dip-s witch 6 set to non-recycle on flame fail, dipswitch 4 set to 5 second PTFI ti me, an d dipswitches 1 & 2 set to the longest purge time.

Dipswitch Definitions

Purge Time: Begins after power is detected on T erminal #7 (limit control) and Terminal #6 (running interlock switch) and no flame (real or simulated) is detected.

Post Purge: If enabled, Terminal #8 (blower motor or contactor) will remain energized for 15 seconds after terminal #7 or Terminal #6 is detected as open.

PTFI Time: The maximum length of time that Terminal #3 and Terminal #4 will be energized after the pre-purge period to detect pilot flame. For all programmers, the MicroM forces a 3 second delay before advancing to the next logic module (Stabilization, MTFI or Auto) after flame is detected during the PTFI period. This is to allow establishment of a pilot and stabilization of the fuel flow.

Prove Air Flow Open: After power is detected on Terminal #7 (limit control) and before energizing Terminal #8 (blower mo tor or contactor) no power must be detected on Terminal #6 (running interlock switch). If power is detected on Terminal #6, the MicroM will hold for 60 seconds after which safety lockout will occur. On recycle operation, if this is enabled, T erminal #8 will be de-energized to allow Terminal #6 to open.

Recycle / Non-Recycle: Applies to flame failure during the Run condition. If a flame failure occurs, the control will de-energize Terminals #3 and #5 and if Recycle is selected a new prepurge period will begin. Lockout will occur immediately and the alarm will energize 15 seconds after flame failure if Non-Recycle is selected. Unless otherwise stated (see Programmer Description), the MicroM recycles on all occurrences of air flow failure. The MEP235 and MEP562 will always initiate a lockout on flame failure.

LED INDICATOR LIGHTS

All MicroM Programmer Modules have 5 LED lights to indicate the operating status of the control and also to display the coded sequence under locked out conditions. The function of the lights under a normal operating condition is:

Operating Control: This LED is energized whenever the burner control switch and all other various limit switches are closed and power is applied to Terminal #7.

Interlock or Air Flow: This LED is illuminated whenever power is detected on Terminal #6, indicating the air flow switch or other running interlock is closed. If the operating control is closed and the running interlock switch remains open, this LED will flash at a 1 second rate indefi nitely for t he MEP100 and MEP200 family. Lockout will occur if the switch remains open for 10 minutes in the MEP500 family. This LED will blink when configured as a flame switch and flame detected.

LOCKOUT CODES



PTFI: This LED is illuminated only during the pilot trial for igni tion period and the stabilization period when so equipped.

Flame: This LED is on whenever a flame signal is detected, and the control is not in a locked out state.

Alarm: This LED flashes when an alarm condition is detected and is used as an address indicator (see communication).

During an alarm condition, the Alarm LED is made to flash at approximately a 1 second rate. The remaining four LEDs are illuminated as a coded sequence identifying the reason for the lockout. For instance, for a LOCKOUT - FLAME FAIL- PTFI, the INTERLOCK, PTFI and FLAME LED’s will all be lit steady, with the Alarm LED flashing. This remains true if power is removed and then restored in a locked out condition.

While in the Idle or Off state, the LEDs are made to flash sequentially to show the operational status of the control every minute. The LEDs can be tested by pressing and releasing the Reset push button, while in the Idle or Off state.

MSGN DESCRIPTION OP

CTRL

DEC HEX

6 6 Lockout Line Frequency Noise Detected  

7 7 Lockout Flame Fail - PTFI   15 0F Lockout Fault Unknown  16 10 Lockout Amplifier High Count Fail  19 13 Lockout Flame Fail - MTFI    20 14 Lockout False Flame - STANDBY     21 15 Lockout Intrlck Open   22 16 Lockout Intrlck Closed    24 18 Lockout Chassis Opto    37 25 Lockout Flame Fail - AUTO      39 27 Lockout Fuel Valve State Change   54 36 Lockout Check Chassis  

55 37 Lockout Check Programmer

56 38 Lockout Check Amplifier   58 3A Lockout Amplifier Auto Check Fail      59 3B Lockout Check BLOWN FUSE     76 4C Lockout Check Scanner  

N/A N/A System Error 

  

AIRFLOW

INTLCK

PTFI FLAME ALARM





 

= NOT LIGHTED



= LIGHTED



= FLASHING



All LED’s Flashing indicates defective programmer.

All MicroM chassis are shipped with a convenient peel off label that can be applied to any surface (inside cover) for future reference.



DIAGNOSTIC MESSAGES - TROUBLESHOOTING GUIDE

POSSIBLE CAUSE SOLUTION

Check Programmer Voltage on Terminal 5 at improper time. Inspect wiring to main fuel valve

Welded watchdog relay Replace MEC chassis

Internal diagnostic failure Replace MEP programmer

Check Chassis Voltage on Terminal 3 or 4 at improper time. Inspect wiring to pilot valve and igniter.

Welded watchdog relay Replace MEC chassis

Chassis Opto Opto-Coupler(s) short circuited Replace MEC chassis

Amplifier High Count Fail Amplifier signal level high Replace Amplifier module

Amplifier Auto Check Fail Flame signal too high Use orifice in sight pipe

Internal Amplifier diagnostic fault Replace Amplifier module

Check Scanner Defective shutter Inspect scanner wiring, replace scanner

UV tube false firing Replace UV tube or scanner

Check Blown Fuse No power detected on terminal 3 Inspect defective pilot valve or igniter

Defective fuse Replace fuse

Line Frequency Noise Detected Spikes detected on AC mains Check for SCR motors or DC drives

Inspect ground system

Fuel Value State Change Terminal 5 (main fuel) detected on during PTFI Check external wiring or replace MEC chassis

Check Amplifier Amplifier not passing diagnostic tests Replace Amplifier module

System Error Noise transient Check high energy ignition noise location. Be

sure it is not arcing to chassis or wrapped

with scanner wiring.

PROGRAMMER DESCRIPTION

For replacement of UVM, TFM and M-II type controls, refer to the cross-reference provided at the end of this section.

MEP100 SERIES

MEP100 and MEP101

These programmers provide relight operation, in the event of a flame failure, pilot trial for ignition is reinitiated. The MEP101 will not lock out if flame signal is present during the Idle or Off cycle. With flame signal present, lockout will occur 60 seconds after the start of a cycle and the air flow switch is closed.

Pilot Ignited Burners

Refer to typical wiring arrangement beginning on page 38.

Normal Operation

With power applied and the limit operating control circuit (1-7) closed, the Operating Control LED illuminates, the burner motor circuit is energized (Terminal 8).

After the air flow proving switch (7-6) closes, the interlock (air flow) LED is illuminated and a short time delay period (3-5 seconds) begins.

At the expiration of the safe start check period, a 10 second pilot trial for ignition (PTFI) period is initiated, illuminating the PTFI Led. Power is applied to Terminal 3, energizing the pilot gas valve and to Terminal 4, energizing the spark ignition.

At the detection of pilot flame, the FLAME LED is illuminated, and the programmer holds that position for 3 seconds to allow the to pilot stabilize.

Power is then applied to Terminal 5 energizing the main fuel valve and removing power from Terminal 4, turning off the spark igniter.

When the operating control opens, the control de-energizes Terminal 3 and Terminal 5 and the pro-

grammer reverts back to an Idle state.



Safety Shutdown

In the event pilot flame is not detected at the end of the 10 second PTFI period, the pilot gas valve and spark ignition are de-energized. A safety lockout occurs which de-energizes the burner motor and energizes the lockout alarm relay circuit, lighting the Alarm LED, 15 seconds after the safety lockout occurs. Manual reset is required.

In the event of a flame failure during a firing period, the main fuel valve is de-energized (Terminal 5) and the spark ignition is re-energized (Terminal 4), the PTFI period begins again as described above under Normal Operation.

In the event of the interlock switch opening, the main fuel valve and pilot valve are de-energized. The control reverts back to the Idle state and begins again a new cycle starting with the safe start check period.

Direct Spark Ignited Burners

Refer to typical wiring arrangement illustrated on pages 40 and 41.

Normal Operation

With power applied and the limit operating control circuit (1-7) closed, the Operating Control LED illuminates, the burner motor circuit is energized (Terminal 8).

The interlock proving switch (7-6) closes, the INTRLCK LED is illuminated and a short time delay period (3 seconds) begins (safe start check period).

At the expiration of the safe start check period, a 10 second PTFI period is initiated. The PTFI Led is illuminated, power is applied to Terminal 3, energizing the main fuel valve and to Terminal 4, energizing the spark ignition.

At the detection of main flame, the FLAME LED is illuminated, and the programmer holds that position for 3-5 seconds to allow the main flame to stabilize.

Power is then removed from Terminal 4, turning off the spark igniter. When the operating control opens, the control de-energizes Terminal 3 and Terminal 5 and the pro-

grammer reverts back to an Idle state. Terminal 8 is immediately de-energized.

Safety Shutdown

In the event the main flame is not detected at the end of a 10 second PTFI period, the main fuel valve and spark ignition are de-energized. A safety lockout occurs which de-energizes the burner motor and energizes the lockout alarm relay circuit, lighting the Alarm LED, 15 seconds after the safety lockout occurs. Manual reset is required.

In the event of a flame failure during a firing period, the secondary fuel valve (if used) is de-energized and the spark ignition is re-energized, the PTFI period begins again as described ab ove under Normal Operation.

MEP102 & MEP104

The MEP102 and MEP104 programmers operate the same as the MEP100, except th e PTFI time is limited to 5 seconds and 10 seconds respectively, the relight feature is eliminated and instead, the control will enter safety lockout on flame failure. Recycle to the start of safe start check period to begin a new cycle will occur on air flow switch opening.

MEP103

The MEP103 programmer implements a fixed 10 second spark igniter sensing period (SISP) used to detect spark, followed by a 10 second main trial for ignition (MTFI). Safety lockout occurs on flame failure during the main firing period (AUTO). Recycle occurs on air flow switch opening. If spark is not detected during the spark igniter sensing period the cont rol makes one attempt to establish pilot



TIMING CHART

TYPE MEP100

PROGRAMMING SEQUENCE

L1/7

INTERLOCK

AIR FLOW

PROVEN

FIRING

PERIOD

L1/7

OFF

PTFI

10 SEC

SAFE START CHECK

PERIOD

T E R

A L S

following a post purge of 30 seconds and a safe start check. Failure to ignition spark on the second attempt results in safety lockout.

MEP100P

The MEP100P programmers provides a fixed 15 second post purge period upon detection of the operating Control (1-7) or Air Flow switch (7-6) opening.

MEP100 as FLAME SWITCH (refer to Figure 11)

For systems that require flame switch operation, that is, relay KF will togg le on with flame signal and off without flame signal, the MicroM provides this function when equipped with an MEP100 programmer. To operate as a flame switch, Terminals 1 and 6 MUST be powered with 120 VA C while T erminal 7 MUST be left unpowered. Terminals 3, 4, and 5 will provide an isolated (KL relay not energized) set of contacts with Terminal 3 being the common input , Terminal 4 will be normally closed and Terminal 5 will be normally open. If Terminal 7 is powered or if Terminal 6 is non-

powered and a flame signal is present, the MicroM will lockout after 1 minute and Terminals 4 and 5 will no longer switch with flame signal. Refer to Figure 11 for configuration wiring. Air

Flow LED will blink while flame is detected.

MEP200 SERIES

Terminal #5 is energized 3 seconds after flame is detected. Re-ignited PTFI on flame fail after Terminal 5 energized. Recycle on loss of interlock (air flow) after flame proven.

MEP101

Same as MEP100 but will tolerate flame signal during “Off” cycle.

MEP102

PTFI time limited to 5 seconds, lockout on flame fail.

MEP104

PTFI time limited to 10 seconds, lockout on flame fail.

The MEP200 Series programmers come equipped with a bank of dipswitches that allow user selectable prepurge timing, selectable PTFI timing, selectable post purge, selectable air flow proven open at start, and selectable recycle/non-recycle operation. Refer to PROGRAMMER DIPSWITCH SETTINGS for detailed information.

Recycle operation refers to flame failure during the main (AUTO) firing period. In the event of a main flame failure, power is removed from Terminal 3 and Terminal 5. If selected by the dipswitch, the control will enter a post purge period for 15 seconds and revert back to the Idl e state where the pre-purge period begins.

TIMING CHARTS

TYPE MEP230

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

SELECTABLE PTFI

5 OR10 SEC

SELECTABLE

PURGE

7, 30, 60, 90 Seconds

T E R

A L S

SELECTABLE POST PURGE

INTERLOCK

AIR FLOW

PROVEN



If non-recycle operation is selected, in the event of a main flame failure, power is removed from Terminal 3 and Terminal 5. The control will enter a forced post purge period of 15 seconds, after which the Alarm LED is illuminated and the alarm relay is energized putting power on Terminal A.

The MEP230H programmer operates the same as the MEP230 with the exception of an additional 8 second pilot stabilization. After flame is detected during the trial for ignition period, the powering of Terminal 5 is delayed for eight (8 ) seconds. Terminal 4 remains powered during the stabilization period. This function is offered primarily for two-stage light oil burners, to assure a specific delay between light off of the first and second stage, and to provide additional ignition timi ng to improve flame stabilization.

The MEP290 programmer operates the same as the MEP230 with the exception t hat post purge is selectable from 0 to 90 seconds.

MEP235

The MEP235 programmer operates the same as the MEP230 except flame failure during the firing period causes lockout. Dipswitch #6 refers to Recycle/Non-Recycle on a loss of air flow (T erminal 6) after flame is proven. The running interlock circuit (Terminal 6) must be proven closed within 10 seconds after start of a cycle.

MEP236

The MEP236 programmer provides a 3 second main flame stabilization period by keeping Terminal #4 (igniter) energized while the main fuel valve (Terminal #5) opens. The MEP236 is to be used on an intermittent pilot only.

Terminal #5 is energized 3 seconds after flame is detected. Selectable Recycle/Non-Recycle operation on loss of flame after Terminal 5 energized. Recycle on loss of interlock (air flow) after flame proven. Selectable air flow (interlock circuit) proven at start.

Selectable purge times are 7, 30, 60 and 90 seconds.



Terminal #5 is energized 3 seconds after the flame is detected.

TYPE MEP236

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING PERIOD

L1/7 OFF

SELECTABLE PTFI

5 OR10 SEC

SELECTABLE

PURGE

T E

I N A

SELECTABLE

POST PURGE

PILOT

IGNITER

MAIN VALVE

MFSP*

6 SEC

*MAIN FLAME STABILIZATION PERIOD

INTERLOCK

AIR FLOW

PROVEN

TYPE MEP230H

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

SELECTABLE PTFI

5 OR10 SEC

SELECTABLE

PURGE

T E R

A L S

SELECTABLE

POST PURGE

STABILIZATION PERIOD

8 SEC

INTERLOCK

AIR FLOW

PROVEN

Selectable Recycle/Non-Recycle operation on loss of flame after flame is proven. Igniter remains on for 6 seconds after main valve opened. Intermittent pilot only. For interrupted pilot, use MEP536

Pilot Stabilization timing begins as soon as flame is proven. Selectable Recycle/Non-Recycle operation on loss of flame after Terminal 5 is energized. Selectable air flow (interlock circuit) proven at start.

MEP500 SERIES

Refer to typical wiring arrangement illustrated on page 40. The MEP500 Series Programmers provide an additional relay used to control Terminal 4 separately.

This allows the implementation of a pilot stabilization period as well as main trial for ignition period. They also come equipped with a bank of dipswitches that allow the user selectable prepurge timing, selectable PTFI timing, selectable post purge, selectable air flow proven open at start, and selectable recycle/non-recycle operation. Refer to PROGRAMMER DIPSWITCH SETTINGS for detailed information.



TYPE MEP560

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

L1/7

SELECTABLE PTFI

5 OR10 SEC

SELECTABLE

PURGE

T E R

A L

SELECTABLE POST PURGE

STABLIZATION PERIOD

8 SEC

MTFI

10 SEC

INTERLOCK

AIR FLOW

PROVEN

TYPE MEP561

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

SELECTABLE PTFI

5 OR10 SEC

SELECTABLE

PURGE

7, 10, 15, 30 Seconds

T E

I N A

SELECTABLE

POST PURGE

MTFI

10 SEC

INTERLOCK

AIR FLOW

PROVEN

A “run-check” switch is also provided to assist in testing size, position and stabilization of pilot in conjunction with the flame detector,

For the MEP560 and MEP562, after pilot flame is detected, the control enters an 8 second pilot stabilization period with Terminal 3 and Terminal 4 energized. At the expiration of the stabilization period, Terminal 5 is energized.

Selectable purge times are 7, 10, 15 and 30 seconds. 10 second timing begins 3 seconds after flame is proven. Selectable Recycle/Non-Recycle operation on loss of flame after Terminal 5 is energized. Selectable air flow (interlock circuit) proven at start. Recycle on loss of air flow (interlock circuit) after flame is proven.



Pilot stabilization timing begins as soon as flame is proven.

TYPE MEP562

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

PTFI

5 OR10 SEC

SELECTABLE

PURGE

T E

I N A

SELECTABLE

POST PURGE

MTFI

10 SEC

STABLIZATION

8 SEC

PERIOD

INTERLOCK

AIR FLOW

PROVEN

TYPE MEP300

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7 OFF

10 SEC

PTFI

5 SECOND

PURGE

T E R

I N A L S

POST PURGE

INTERLOCK

AIR FLOW

PROVEN

5 SEC

PILOT

PROVING

5SEC MTFI

INTERMITTENT

PILOT

Lockout on loss of air flow (interlock circuit) after flame is proven. Lockout on flame fail.

MEP300/MEP600 SERIES

This programmer type must be used with the MEC320 or MEC480 t ype chassis. Refer to typical wiring arrangement illustrated on page 41.

The MEP300/MEP600 Series Programmers provide additional relays used to control Terminals 3 and 4 separately. This allows the implementati on of early spark termination, pilot proving period and interrupted pilot operation. The MEP397, MEP696 and MEP697 programmers contain a “runcheck” switch to assist in testing size, position and stabilization of pilot in conjunction with the flame detector.

The MEP696 and MEP697 provide a control line used to energized and de-energize a relay located on the MED8 and MED9 daughter boards.

TIMING CHARTS

0 Second post purge on operating control open. 15 Second post purge on flame fail during PTFI, Proving and MTFI. Lockout on flame fail during PTFI, Proving and MTFI. Relight operation on main flame fail. Recycle operation on air flow failure. Reset from lockout from pushbutton or line voltage.



TYPE MEP304

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

10 SEC

PTFI

5 SECOND

PURGE

E R M

POST PURGE

INTERLOCK

AIR FLOW

PROVEN

5 SEC

PILOT

PROVING

10 SEC

MTFI

INTERRUPTED

PILOT

TYPE MEP335

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

35 SEC

HSI

30 SECOND

PURGE

E R M

15 SEC

POST PURGE

INTERLOCK

AIR FLOW

PROVEN

3 SEC

PTFI

5 SEC

PILOT

PROVING

INTERMITTENT

PILOT

0 Second post purge on operating control open. 15 Second post purge on flame fail. Non-recycle operation on flame fail. Recycle operation on air flow failure.

15 Second post purge Non-recycle operation on flame failure. Recycle operation on air flow failure. Reset from lockout from pushbutton.



0 Second post purge on operating control open.

TYPE MEP397

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

L1/7

OFF

7 SEC

PTFI

1 5 SECOND

PURGE

E R M

POST PURGE

INTERLOCK

AIR FLOW

PROVEN

5 SEC

PILOT

PROVING

5 SEC

MTFI

INTERRUPTED

PILOT

TYPE MEP696

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

(AUTO)

L1/7

OFF

5/10 SEC

SELECTABLE

PTFI

30 SECOND

PURGE

E R M

SELECTABLE POST PURGE

0/60 SEC

INTERLOCK

AIR FLOW

PROVEN

5 SEC

PILOT

PROVING

5 SEC

MTFI

INTERRUPTED

PILOT

MODULATE CONTACTS

15 Second post purge of flame fail during PTFI, Proving and MTFI. Lockout on flame fail during PTFI, Proving and MTFI. Relight operation on main flame fail. Recycle operation on air flow failure. Reset from lockout from pushbutton or line voltage.

Lockout on flame fail. Lockout occurs if air flow terminal 6 is not proven 10 seconds into purge. Modulate contacts on daughter board change state 1 second into Auto.



TYPE MEP697

PROGRAMMING SEQUENCE

L1/7

PURGE

COMPLETE

FIRING

PERIOD

(AUTO)

L1/7

OFF

5/10 SEC

SELECTABLE

PTFI

SELECTABLE

PURGE

E R M

SELECTABLE POST PURGE

INTERLOCK

AIR FLOW

PROVEN

5 SEC

PILOT

PROVING

10 SEC

MTFI

INTERRUPTED

PILOT

MODULATE CONTACTS

STANDOFF

PLUG-IN BOARD

(MED SERIES)

RELEASE

DIRECTION

WARNING: Remove power when servicing the control.

Lockout on flame fail. Lockout on air flow switch opening while main flame energized. Recycle/Non-recycle dipswitch controls lockout on air flow switch not closing 10 seconds into

purge. Modulate contacts on daughter board change state 5 seconds into Auto.

OPTIONAL PLUG-IN BOARDS

Description

A family of optional plug-in boards are available separately for the MicroM chassis to provide remote reset, remote alpha-numeric display and serial communications as a stand alone or in com bination. Refer to ORDERING INFORMATION for MicroM Chassis types for units that have preinstalled functions.

FIGURE 4. PLUG -IN BOARD LOCATION AND INSTALLATION

Installation

For upgrading standard units or for replacing the installed pl ug-in board, grasp plug-in board at the top and pull away from the chassis, freeing the unit from the retaining standoff. Lift plug-in board up and away from connector located on chassis board. Guide new plug-in bo ard into the same con nector and push onto standoff.



Function

SERIAL COMMUNICATIONS

REMOTE DISPLAY

RJ45 JACK

REMOTE RESET

(RS485)

(+)

(-)

SERIAL COMMUNICATIONS

REMOTE DISPLAY

RJ45 JACK

RELAY CONTACTS

(RS485)

MED8 - Normally Closed MED9 - Normally Open (used only with MEP696/MEP697)

CAUTION: Remote reset is recommended only on a control solely for proved ignition programming (pilot ignited burner) or a control for use only with applications in which unburned fuel cannot accumulate and that is intended for installation in inaccessible locations such as open-flame, ceiling-suspended gas heaters. The remote reset location must be within sight and sound of the fired equipment.

Any MicroM chassis type with the appropriate plug-in board installed provides remote reset capabilities in the event of a lockout condition. A remote reset swit ch consists of a dry contact such as a remote momentary push-button wired to the two (2) terminals located on the plug-in board as shown in Figure 5. The reset switch will also force the MicroM to recycle if depressed and released during the purge or run period.

A plug-in board (MED8) is pre-installed in the MEC320TS chassis to provide local reset, remote alpha-numeric display, serial communications and normally closed relays.

FIGURE 5. REMOTE RESET

ADVANCED RESET FUNCTIONS

Multiple functions have been integrated into the reset push button located on the MicroM and provided by way of the remote reset terminals. Among these are reset/recycle, reset from lockout only, recycle only and set unit address. The functions of the switch is determined by the length of time

the push button is depressed and released.

The MicroM allows the connection of the remote resets to be connected together, usually in a multiburner system where multiple MicroM’s are mounted in a common panel. The reset push button located on the MicroM daughter board is in parallel with the remote reset terminals when provided by the other MED daughter boards.

Normal Operation

If the push button is depressed and released for greater than 1/2 second but less than 3 seconds, the

MicroM will either reset if in lockout, or shutdown and revert back to the start of the cycle. If the MicroM is in the Idle state, this action will cause the LED’s to sequence from the bottom to top and serves as a LED test.

Smart Reset

If the push button is depressed and released greater than 3 seconds but less than 5 seconds, the



MicroM will reset from the lockout state only. This is especially useful where, through the use of remote reset daughter boards, all reset inputs can be connected together to a common reset pushbutton or intelligent device (PLC). If the push button is depressed as described above it will only cause the unit that is in lockout to reset and not effect any other units.

Smart Recycle

If the push button is depressed and released greater than 5 seconds but less than 7 seconds, all connected MicroM units will recycle back to the beginning of purge. All units that are in lockout will remain in lockout.

Address Mode

If the unit is in the Idle or Standby mode and the push button is d epressed and released for greater than 10 seconds, the unit address of the MicroM will be displayed on the LED’s in a binary format. The range of the address is 0 to 31 and is used for Modbus or E500 communications. Because the default address is 0 and since address 0 would mean no LED’s would be lit; the ALARM LED is made to flash when the address is 0. The OP CTRL LED is the least significant bit while the FLAME relay is the most significant bit. The ALARM LED is used to indicate if the address is greater than or less than 16. If the ALARM LED is flashing, the address is less than 16 and conversely if the ALARM LED is solid, the unit address is greater than 16. This only applies to the address. To increment the address on the control, depress and release the RESET push button and observe the LED pattern. If the RESET switch is untouched for 30 seconds, the current address displayed will be stored to memory and the MicroM will automatically exit the address mode.

LED

OP CNTRL 1 - ● - ● - ● - ● - ● - ● - ● - ● -

Air Flow 2 - - ●● --●● --●● --●● -

PTFI 4 ----●●●● ----●●●● -

FLAME 8 --------●●●●●●●● -

ALARM

REMOTE DISPLAY

BINARY

VALUE0123456789101112131415★16

✸✸✸✸✸✸✸✸✸✸✸✸✸✸✸✸✸

★ note: addresses 17-31 would repeat above pattern but with alarm LED steady on

The MicroM provides an interface to the optional ED510 displ ay module. The ED510 connects to the MicroM through the plug-in board using a ED580 cable. The ED580 cable is available in 2, 4, or 8 foot lengths. Part number 129-145 -1 (4 ft.), -2 (8 ft.), -3 (2 ft.) is available for remote mounting the ED510 Display Module and to provide NEMA 4 protection. ¤

The ED510 Display Module is a backlit, 2 line by 16 character LCD display with keypad to provide both current operation and historical information of the MicroM. The ED510 contains a keypad consisting of three push keys, SCRL, RESET and MODE. Remote reset is available through the ED510 Keypad.

The ED510 displays current burner status, first out annunciation in the event o f a lockout conditi on, historical burner information, detailed lockout inform ation of the last six (6) lockout conditions and programmer configuration information. Through the display the ability to pro gram the unit address for communications, as well as resetting the stored information (cycles, hours, and lockouts) to zero is provided.

Depending on the information being displayed, data is displayed on the ED510 screen in th e follow ing locations:



At any time the MicroM is powered, the SCRL key is used to scroll through and display the total

PURGE 00:05 STARTING BURNER

OPERATING STATUS

(Standby, Purge, PTFI, Auto, etc.)

ADDITIONAL INFORMATION

(Flame Signal Strength, Cause of current Lockout, etc.) OR

BURNER HISTORY (SCRL key required) (Burner Cycles, Burner Lockouts, etc.) OR

SUB-MENU HEADINGS (SCRL and MODE keys required)

(Lockout History, Program Setup, etc.

ON OPERATING STATUS

TIMING

(During Purge or PTFI) OR

FLAME SIGNAL STRENGTH

(During PTFI, MTFI, or Auto)

ARROW displayed when MODE key is required to

access sub-menus (Lockout, History, Program Setup, etc.)

AUTO 40 BNR HOURS 673

AUTO 40 BNR CYCLES 2784

AUTO 40 BNR LOCKOUTS 21

AUTO 40 SYS HOURS 1386

AUTO 40 LOCKOUT HISTORY

AUTO 40 PROGRAM SETUP

AUTO 40 SYSTEM INFO

number burner hours, burner cycles, burner lockouts and system hours on the bottom line of the ED510 display. The top line will continue to show the current run mode of the control (e.g. PURGE, AUTO, etc.) Following the historical information, the SCRL key will display three (3) sub-menus providing the following information and/or functions:

— Lockout History (with burner cycle and burner hour time stamp). — Program Setup (to display programmer type, purge timing, switch configuration, etc.) — System Information (values of average pilot and main flame signal, and reset burner his-

tory).

The system sub-menus require the MODE key to gain access to the information associated with each sub-menu. An arrow is displayed in the lower right hand corner of the display to indicate a system sub-menu is available. Once within the sub-menu, pressing the SCRL key displays the next item within the sub-menu, and pressing the MODE key will exit the sub-menu and return the display to the top of the main menu.

Number of burner operating hours. (Terminal #5 energized).

Number of burner cycles.

Number of burner lockouts.

Number of hours the control has been powered.

Sub-menu to display the cause of the last 6 lockouts. The MODE key is required to display the actual lockouts.

Sub-menu to display various operating parameters of the programmer and amplifier. The MODE key is required to enter the sub-menu.

Sub-menu to display information pertaining to the operation of the control. The MODE key is required to enter the sub-menu

LOCKOUT HISTORY

The sub-menu “LOCKOUT HISTORY” will display the last six (6) lockouts, along with the burner cycle and burner hour when the lockout occurred. When the MODE key is pressed, the screen will display the most recent lockout condition and the number of that lockout (e.g. LO # 127 represents the 127th lockout of that control). The SCRL key will display the Burner Hour, followed by the Burner Cycle when the lockout occurred. The SCRL key will advance to the next lockout, and repeat the sequence listed above. The MODE key will exit the sub-menu.

PRESS SCREEN DISPLAYS DESCRIPTION

SCRL AUTO 45

LOCKOUT HISTORY

MODE LO #127 PTFI

FLAME FAIL

SCRL LO #127 PTFI

@ BNR HOURS 136

SCRL LO #127 PTFI

@ BNR CYCLE 744

SCRL LO #126 PURGE

AIR FLOW OPEN

MODE AUTO 45

FLAME SIGNAL

Scrolling through the historical information.

The latest (most recent) lockout condition. This is the 127th lockout of the control. History indicates the lockout occurred during PTFI.

The last lockout occurred after 136 hours of burner operation.

The last lockout occurred at burner cycle 744.

The second latest lockout condition. This is the 126th lockout of the control. History indicates the lockout occurred during purge.

Screen has returned to the normal run message.



PROGRAM SETUP

The sub-menu “PROGRAM SETUP” allows the user to review the various operational settings of the programmer module (e.g. programmer type, purge timing, etc.). The MODE key is used to enter the “PROGRAM SETUP” sub-menu, and the SCRL key is used to advance through the sub-menu.

MODE AUTO 45 Programmer Type is an MEP230.

PROGRAMR MEP230

SCRL AUTO 45 Software Engineering code of the programmer module is code 5.

ENGR CODE NO. 5

SCRL AUTO 45 Amplifier module is an EUV1 or an ERT1.

AMP. TYPE= MEUV

SCRL AUTO 45 Flame Failure Response Time (FFRT) is 3 seconds.

FLAME FAIL TIME = 3s

SCRL AUTO 45 Purge timing (selected by the dipswitches) is 7 seconds.

PURGE TIME = 7s

SCRL AUTO 45 Prove 7-6 open to start is disabled (selected by dipswitches).

PROVE 7-6 OPEN = N

SCRL AUTO 45 Post purge time is 0 seconds (selected by dipswitches).

POST PURGE = 0s

SCRL AUTO 45 Control recycles on flame fail (selected by dipswitches).

TYPE RECYCLE

SCRL AUTO Unit Address is 00. Refer to section on communications.



UNIT ADDRESS 00

SCRL PRESS RESET TO Force storage of dipswitch settings before 8 hours time-out.

ACCEPT SETTINGS

MODE AUTO 45 Mode key returns to normal run message.

SYSTEM INFO

The sub-menu “SYSTEM INFO” allows the user to review information pertaining to the operation of the control (e.g. average main flame signal strength, status of the high fire and low fire end switches, etc.). The MODE key is used to enter the “SYSTEM INFO” sub-menu, and the SCRL key is used to advance.

Press Screen Displays Description

SCRL AUTO 45 SCRL key advances through the historical information until

SYSTEM INFO > “System Info” is displayed. Pressing and releasing

the MODE Key enters the sub-menu.

MODE AUTO 45 The average flame signal strength of the pilot flame = 22

AVG. PILOT FLM 22

SCRL AUTO 45 The average flame signal strength of the main flame = 40.

AVG. MAIN FLM 40

SCRL PRESS RESET TO Historical data will be cleared to 0. Must be done while

CLEAR HISTORY terminal I-7 is open.

MODE AUTO 45 Mode key returns to run message.

FLAME SIGNAL

COMMUNICATIONS

The protocol to be used is Modbus RTU. This is implemented by the master (PC, PLC, etc.) issuing a poll to the slave (MicroM) and the slave responding with the appropriate message.

A typical format of a poll request is as follows:

DST FNC ADR

DST refers to the logical address of the slave set but using reset pushbutton or ED510. FNC is the function being requested. FNC 03 is a read request. ADR is the message number or register number of the data being requ ested. In Modbus, register

addresses begin at 40001 but is interpreted as address 00. DAT is the number of words being requested. A word is an integer consisting of 2 bytes. The normal response from a slave is as follows:

DST FNC DBC DATA….

ADR

DAT

Hi/Lo

DAT

CRC

DBC is the data byte count being returned. It must be two times the DAT number from the poll request.

DATA is the data returned and is always a series of 2 byte integers. If 4 words were requested then DBC would be 8 and there would be 8 data bytes or 4 data words containing the requested data.



The format of the data is 4800, N, 8, 1 meaning 4800 baud, no parity, and 1 stop bit.

Below is a table of currently available messages provided by the MicroM programmers, followed by a description where necessary.

MESSAGE ADDRESS

00 1-6 STATUS 83 (053H) = RUN;

01 1 MSGN Current message being displayed (see Table 3)

02 1 GSTAT Defines Timer Type

03 1 TIMER Time, Flame, Address

04 1 FLAME Flame Signal

05 1-3 LOGSTAT Current logic module, PURGE, PTFI, AUTO (See

06 1 INPUTS Input limits state

07 1 OUTPUTS Output relays state

08 2, 4 or 8 SYSMINS System on minutes

10 2 or 4 BNRMINS Burner on minutes

12 2 CYCLES Completed Burner Cycles

14 1 LOCKOUT COUNT Stored Lockout Count

15 1-6 LOCKOUT HISTORY Last 6 Lockouts, first word is most current lock-

21 1-2 DEVTYP Programmer device type, 5=EP, 6=EPD,

22 1 AMPTYP Amplifier Type;

23 1 PROGTYP Programmer Type (See Table 2)

24 2 FLAME SIGNAL

26 1-9 Combined Status See Description Below

35 6 Most Recent Lockout Data

41 6 2nd Most Recent Lockout

47 6 3rd Most Recent Lockout

53 6 4th Most Recent Lockout

59 6 5th Most Recent Lockout

65 6 6th Most Recent Lockout

WORDS

REQUESTED

RESPONSE VALUE

202 (0CAH) = LOCKOUT

Table 1)

out

7=MicroM

MECD=080H; MEUV=090H; MEIR=0A0H; MERT=0B0H;

MEUVS=0C0H

AVERAGES

Data

PTFI and Auto Flame Signal Averages

Returns complete lockout description of stored

lockout history. Includes lockout message,

lockout module, @ burner hours, and @ burner

cycles

Messages 00, 05, 08, 10, 15, 21 and 26 are unique in that a limited number of successive registers can be combined with these requests. For example, a request to message 00 can contain up to 6 data words. The response to this would contain STATUS, MSGN, GSTAT, TIMER, FLAME and LOGSTAT. If the requested data word count (DAT) we re to be 2 then the response would contain STATUS and MSGN only. Message 15, last 6 lockouts, can return data ranging from 1 to 6, with 1 referring to the most recent lockout.



Message 26 returns the current operating status as well as stored burner hours and burner cycles as a snapshot of the entire MicroM system. When all 9 words are requested, the data returned consists of STATUS, MSGN, FLAME, INPUTS, OUTPUTS, BNRMINS, and BNRCYCS.

The MSGN being transmitted is a numerical value and must be interpreted by t he communicating device, which actually is an advantage since this can be made to be whatever message text the end user wants. In other words, it allows for programming custom messages without actually ch anging the message in the programmer.

The MicroM stores its burner on time (Terminal 5 powered) and system on time (L1 powered) in minutes. Internally, the programmer converts this to hours for display purposes, however the result is rounded down. The information being supplied by Modbus will be the actual time in minutes and it is up to the communicating device to do the conversion. Sin ce the maximum value stored in the MicroM is 9,999,999 minutes, the maximum value in hex therefore, is 98967FH and comprises of two data words. The maximum cycle count is 999,999 decimal or 0F423FH, still two data words. As an example, the System on Minutes data is transmitted from the MicroM to the interface as high word / low word as shown below:

MESSAGE ADDRESS 8 MESSAGE ADDRESS 9

HIGH WORD LOW WORD

HIGH BYTE LOW BYTE HIGH BYTE LOW BYTE

0 98H 96H 7FH

Note: Data from address 9 cannot be accessed directly.

All values are represented in a HEX or base 16 format. GSTAT determines the type of value TIMER represents. TIMER can be a running timer such as is

used in purge, a flame signal or meaningless. Only the lower nibble of GSTAT has any value. If this value is 0 then the TIMER value has no meaning. The value in TIMER is a background minute timer in the MicroM and should be ignored. If GSTAT is between 4 and 7, the TIMER represents the current value flame signal. If GSTAT is a 1, 2, or 3 then TIMER represents a running timer value.

The baud rate of the MicroM is fixed at 4800 bits per second. The format of the data is 8 data bits, no parity and 1 stop bit. Due to the RS485 format, the communication format is considered half-duplex. That is, only one user is permitted on the communication lines at a time.

The information contained in INPUTS and OUTPUTS represents the status of the interlocks and relays respectively. For the INPUTS, a 1 in the interlock position defines the interlock as being on or energize where the 1 in any bit position in the OUTPUT register signifies the relay as being energized.

INPUTS

Term 5Term 3Term 6Term 7

Reset Scrl Mode RF Pilot Intrlck OpCntrl Ref

Reset, Scrl and Mode represent the keypad located on the ED510 display. A ‘0’ in any of these positions indicates the switch is depressed. A ‘1’ in the opto-coupler position indicates the opto-coupler is on or interlock closed.

OUTPUTS

Term 8 Term A Term 3 Term 5 Term 4

N/A N/A N/A Blower Alarm Pilot Main Fuel MTFI

A ‘1’ in any terminal position indicates the relay is energized. Term 4 indicates the state of K1 relay, located in the MEP500 series programmers.



It is suggested that repeated polling interval not be less than 200 mSec per request. Requesting data such as burner minutes, system minutes and burner cycles be kept at a minimum due to the amount of processing time required to gather that data.

Table 1: Logic Dispatch

LOGIC DISPATCHER

VALUE MicroM

HEX DEC

45H 69 MPOSTIDLE

46H 70 MPREPURGE1

47H 71 MPURGE

48H 72 MTFI

49H 73 MSTABLE

4AH 74 MTFMF

4BH 75 MAUTO

4CH 76 MSHTDWN1

4DH 77 MSHTDWN2

4EH 78 MIDLE

Logstat represents the current software module the Flame-Monitor is currently executing. They are named as close to the logic module the actual burner sequence is in. For instance, in the Flame-Monitor, MPURGE represents High Fire Purge where MPOSTPURGE represents low fire start purge. MSHUTDWN1 represents the post purge period after a complete cycle or the cool down period after a lockout.

MIDLE or STANDBY is the period of time where the operating control is open or the control is in lockout waiting for reset. On instances of false flame during the purge period, the cont rol algorithm forces the control back to STANDBY until false flame ceases or lockout occurs.

MPREPURGE1 is the period of time prior to PURGE where the control checks the status of the air flow interlocks or in the case of the Flame-Monitor, high fire proving switch (D-8). If found open, the control will remain in this state until the respective switch closes or lockout occurs.

MTFI represents the pilot ignition stage of a burner sequence. MTFMF represents the main trial for ignition period where main fuel is introduced along with pilot.

MAUTO is the run period of the burner sequence.

MPOSTIDLE and MSHTDWN2 are small periods of time where certain internal tests are conducted and general cleanup before and after a cycle is performed.

PROGTYP is represented by 1 data word. The upper byte identifies the family and the lower byte represents the programmer type within the family. The data represented by PROGTYP can be used to guard against the wrong programmer being installed in a system.



Table 2: Program Module Identification

Programmer Module Identifier

MEP100 0H, 01H

MEP101 0H, 02H

MEP102 0H, 03H

MEP103 0H, 04H

MEP100P 0H, 05H

MEP109 0H, 06H

MEP130 0H, 08H

MEP104 0H, 09H

MEP105 0H, 0AH

MEP106 0H, 0BH

MEP107 0H, 0CH

MEP108 0H, 0DH

MEP230 1H, 01H

MEP230H 1H, 02H

MEP235 1H, 04H

MEP236 1H, 05H

MEP290 1H, 06H

MEP238 1H, 09H

MEP237 1H, 0AH

MEP560 2H, 01H

MEP561 2H, 02H

MEP562 2H, 03H

MEP536 2H, 04H

MEP537 2H, 05H

MEP300 0H, 01H

MEP304 0H, 09H

MEP397 0H, 0DH

Table 3: Message Description

DEC HEX MicroM Message

1 1 L1-7 OPEN

2 2 FALSE FLAME

3 3 STARTING BURNER

5 5 INTRLCK OPEN

6 6 LOCKOUT LINE FREQUENCY NOISE DETECTED

7 7 LOCKOUT FLAME FAIL - PTFI

8 8 UNIT ADDRESS

99 MTFI

10 0AH IGNITION TIMING

11 0BH

12 0CH FLAME SIGNAL

13 0DH CYCLE COMPLETE

14 0EH OFF



16 10H LOCKOUT AMPLIFIER HIGH COUNT FAIL

19 13H LOCKOUT FLAME FAIL – MTFI

20 14H LOCKOUT FALSE FLAME – STANDBY

21 15H LOCKOUT INTRLCK OPEN

22 16H LOCKOUT INTRLCK CLOSED

23 17H INTRLCK CLOSED (PROVING AIR FLOW OPEN AT START)

24 18H LOCKOUT OPTO FAILURE

30 1EH FALSE FLAME

37 25H LOCKOUT FLAME FAIL - AUTO

39 27H FUEL VALVE STATE CHANGE

40 28H AIR FLOW CLOSED

49 31H LOCKOUT FLAME FAIL - PTFI

54 36H LOCKOUT CHECK CHASSIS

55 37H LOCKOUT CHECK PROGRAMMER

56 38H LOCKOUT CHECK AMPLIFIER

58 3AH LOCKOUT AMPLIFIER AUTO CHECK FAIL

59 3BH LOCKOUT CHECK BLOWN FUSE

76 4CH LOCKOUT CHECK SCANNER

Addressing Modes

For communication in a multi-burner or multi-control environment, each MicroM must have a unique address. The range of address allowed within the MicroM is 0 to 31 allowing for a possible 32 units to be connected in a single multi-drop node. As shipped the default address is 0. The address of the MicroM may be set using two methods. Using the ED510 display, it is necessary is SCRL to the PROGRAM SETUP menu and enter that submenu with the MODE key. SCRL down until the display indicates UNIT ADDRESS with the actual address of the MicroM being displayed on the top



line of the display. Pressing and releasing the RESET key will cause the address to increment. The

6 16 202428323640

60 80

AMPLIFIER TEST JACK VOLTAGE VS. ED510 DISPLAY BOARD

TEST JACK VOLTAGE

address after 31 is 0. The second method is to use the local reset located on the plug-in board. It is first necessary to open the operating control (L1-7) to have the MicroM in the IDLE or STANDBY position. Depressing the reset switch for greater than 10 seconds will cause the address of the MicroM to be displayed in a binary format on the LEDs located on the programmer board. Because the default is address 0, and since address 0 would mean no LEDs would be lit; the ALARM LED is made to flash when the address is 0. The OP CTRL LED is the least significant bit while the ALARM relay is the most significant bit. To increment the address counter, depress and release the RESET push button and observe the LED pattern. If the RESET switch is untouched for 30 seconds the current address displayed will be stored to memory and the MicroM will automatically exit the address mode.

TEST JACK VOLTAGE

For all amplifiers, the MicroM provides a uniform 0-10 volt signal to represent the flame signal strength. A signal reading greater than 4 volts is considered sufficient to provide reliable operation. This same signal is also available in a numerical format on the ED510 display. The chart below correlates the test jack voltage to the numerical value. The signal clamps at 10 volts at a numerical value greater than 42 and the numerical value clamps at 80.

EXTERNAL METER CONNECTIONS

μΜ

RECOMMEND

5/16” TO 3/8” HOLES

TO ACCOMMODATE

METER PROBES

2.963 2 31/32

1.759 1 3/4

3.134 3 1/8

ADDING HOLES IN COVER TO ACCESS TEST JACKS

The test jacks are located on the amplifier card. If external access is desired for a panel meter the shown below will assist you in locating the position to drill through on th e front cover. The hole sizes should be large enough to accommodate the body of the meter probes. The tests accept meter probes up to .080” or 2mm diameter.



INSTALLATION TESTING

New warning for Micro-M control product bulletin

WARNING!!

Boiler operation, maintenance, and troubleshooting shall only be conducted by trained personal. Persons troubleshooting lockouts or resetting the control must respond properly to troubleshooting error codes as described in this product bulletin.

Jumpers being used to perform static test on the system must be used in a controlled manner and must be removed prior to the installation of the Micro-M on the wiring base and the operation of the control. Such tests may verify that external controllers, limits, interlocks, actuators, valves, transformers, motors and other devices are operating properly. Such test must be conducted with manual fuel valves in the closed position only. Replace all limits and interlocks not operating properly, and do not bypass limits or interlocks. Failure to follow life and property.

Use of Test Meter (All Controls)

Testing the Fireye MicroM Cont rols requires the use of a test AC/DC multimeter, with a minimum 1000 ohm/volt AC scale and 20,000 ohm/volt DC scale.

With the test meter on the DC scale, and the test meter leads inserted into the test jacks on the amplifier (Red for positive (+) polarity, Black for minus (-) polarity), a DC voltage reading of 4.0 to 10 volts for all amplifier types should be obtained when the control is detecting flame and 0 volts when no flame is present. Wildly fluctuating readings are an indication of an unstable flame or flame sensor requiring maintenance. Inadequate flame signal may be improved by:

1. Assuring that the flame detector an d wiring installations have followed t he instructions begin-

ning on page 46.

2. Assuring that the flame detector is clean and within the ambient temperature limits.

3. Assuring that the flame is sufficiently large to detect.

4. Assuring that the flame quality (fuel to air ratio, combu s tion air velocity) is satisfactory.

5. Trying a shorter sight pipe or increasing the sight pi pe diameter. (The burner manufacturer

should be consulted before mechanical changes are made).

these guidelines may result in an unsafe condition hazardous to



When using a flame rectification amplifier, a micro-ammeter may be connected in series with the

W ARNING: Before making a pilot flame test, manually shut off the fuel supply to the main burner.

WARNING: DO NOT TOUCH a flame rectification rod with power applied.

WARNING: The minimum pilot test must be accomplished by a trained and qualified burner technician.

WARNING: If light off is delayed, shut off the power to the installation. Realign the flame detector so a larger pilot flame is required before flame is detected. Repeat this test until the main flame lights reliably with minimum pil ot.

wire to Terminal S2. Normal flame will produce a meter reading between 4 and 10 micro-amps. With the test meter on the AC scale, line and load voltages may be measu red at the identified test

points on the chassis.

Normal Pilot Flame Test (Programmers with Run/Check Switch)

1. At pilot trial for ignition (PTFI) place the Run/Check switch in the Check position.

2. During the pilot flame test and adjustment period, if flame is not detected within 30 seconds, the

control will lock out and require manual reset to initiate another cycle.

3. Observe the pilot flame si gnal on the test meter or the ED510 display. If the flame signal is

below 4.0 volts DC or a reading of 10 on a remote display, re-adjust the pilot flame or realign the flame detector.

4. When using UV detection, a test is required to verify that UV radiation from the igniti on spark

is not being detected. To accomplish this, manually shut off both the pilot and main fuels. Initiate a normal start-up. Observe the test meter which should read no more than 1/2 volt DC. If higher levels are observed, realign the UV scanner, and/or shield the spark from the scanner’s view.

5. Move the Run/Check switch to the Run position, check pi lot flame response time by manually

shutting off the pilot fuel and initiate a normal start-up. With no pilot flame present, the control will de-energize the pilot assembly at the end of the trial for ignition interval (selectable by dipswitch #4) and go into safety shutdown.

Minimum Pilot Test

This test assures that the flame detector will not sense a pilot flame too small to light a the main flame reliably. It must be made on every new installation as well as following the repositioning or replacement of the flame detector. This procedure should not be used on a direct spark burner.

1. Manually shut off the fuel to the main burner.

2. Place the Run/Check switch in the Check position. (MEP500 Series Programmers only).

3. Connect a test meter to the test jacks on the Amplifier Module or observe the reading on the

ED510 display.

4. Initiate a normal start-up.

5. Reduce the fuel to the pilot until the DC voltmeter reads 4.0 volts. This is the minimum pilot.

For flame rectification the flame signal for minimum pilot varies depending on the application. See WARNING below.

6. Return the Run/Check switch to the Run position (MEP500 Seri es Programmers only).

7. Slowly turn on the main fuel and insure the main flame lights off promptly and normally.

Flame Failure Test

1. Temporarily connect spark ignition and pilot to Terminal #3.

2. Initiate a normal start-up.



5. IMPORTANT: When the test is completed, reconnect the spark ignition to Terminal #4.

3. Manually shut off all fuel and observe the loss of flame signal on the test meter.

4. If flame signal does not reduce to zero within the flame failure response time of the control

(FFRT determined by the selectio n of the amplifier), verify the UV flame detector is not actuated by the ignition spark. If spark is detected, a metallic shield or relocation of the UV detector is required.



MAKE PROPER BURNER

ADJUSTMENT

DID

OPERATE

CONTROL LED

COME

ON?

DID

PTFI LED

COME ON AFTER

SUITABLE

DELAY?

DID

AIR FLOW

LED

COME

O.C. ON

ALARM BLINKING

NO HEAT

INSTALL DC VOLTMETER

IN TEST JACKS

SHUT FUEL

SUPPLY COCK

WAIT

MIN

RESET CONTROL

PROGRAMMER OR

MEC120 DEFECTIVE

MAKE IT

CALL FOR HEAT

SEE SITUATION

HEAT

BEING

CALLED

FOR?

ON?

YES

SITUATION #1

YES

DID PTFI

SYSTEM RUNNING?

ALIGN

SCANNER

REPAIR WIRING

SUCCESSFUL

RESET

REPLACE

PROGRAMMER

DID

FLAME

LED COME

ON?

YES

MP100 4-7 SECONDS

MP230 PREPURGE DELAY TIME

YES

NORMAL LOCKOUT

YES

AMPLIFIER

DEFECTIVE

OR MEC120

REPLACE SCANNER

REPEAT

SITUATION #1

LED GO OFF

AFTER SUITABLE

DELAY?

MicroM

SERVICE GUIDE

TO RESET THE CONTROL THE CONTROL

POWER MUST BE ON. (L1-L2)

THERE A

GOOD FIRE?

PROPER

ACROSS S1 & S2

VOLTAGE

WIRING &

TERM. CONTACT

PRESSURE

OK?

S1 S2

IS SCANNER POSITION

OK?

PROPER PILOT VOLTAGE (120V) ACROSS

3, 2

YES

PROPER

IGNITION

VOLTAGE (120V)

ACROSS

4, 2

YES

PROPER

MAIN VALVE

VOLTAGE (120V)

ACROSS

5, 2

YES

CHECK FUSE IN

CHASSIS

CHECK OUTPUT

YES

WIRING

REPLACE

MEC120

REPLACE

MEC120

CHECK OUTPUT

YES

WIRING

CHECK OUTPUT

YES

WIRING

TEST JACKS

AMPLIFIER MODULE

ALL TYPES 4-10 VDC



O.C. ON

YES

PRESENT

8-2?

O.C. ON

ALARM ON

YES

REPLACE

MEC120

PROGRAMMER

MC120 DEFECTIVE

CHECK BLOWER

SYSTEM

CHECK AIR FLOW

SWITCH AND

CHECK WIRING

BLOWER

ON?

120 VAC

PRESENT

6-2?

FLAME ON

YES

SITUATION #2 SITUATION #3 SITUATION #4

NO HEAT NO HEAT

NO YES

REPLACE FUSE

RESET BREAKER

CHECK

SYSTEM

WIRING

NO YES

REPLACE

MEC120

CORRECT

AMPLIFIER

PIN PROBLEM

S FUSE

OK AND CKT

BREAKER

MADE?

LED’s

YES

NO HEAT

120VAC

PRESENT

120VAC

AMP.

OR PRO.

PINS

ENGAGED

1-2 OR

PROGRAMMER

PINS

7-2?

REMOVE

SCANNER

REPLACE

AMPLIFIER

YES

SEE

SITUATION #1

REPLACE

AMPLIFIER

SEE

SITUATION #1

PROGRAMMER OR

DEFECTIVE

MC120

REPLACE

SCANNER

SEE

SITUATION #1

YES

CHECK BURNER

WIRING AND FUEL

VALVES. FLAME SHOULD

NOT BE THERE.

FLAME LED

ON?

THIS A UV

SYSTEM?

FLAME LED

ON?

YES

FLAME LED

ON?

FLAME PRESENT

IN BURNER?

TROUBLESHOOTING TIPS

1. Verify that there is a solid earth ground wire brought to the panel that the Fireye base is mounted to.

2. In a rectification system, verify that terminal S1 is solidly earth grounded, and confirm that the flame rod is aligned so it doesn’t droop

near the ignition spark.

3. Confirm that there is no measurable voltage present between the ground screw and terminal 2 (neutral).

4. Confirm that the 120 volt AC supply has its neutral leg earth grounded at the supply, (floating isolation transformers can cause prob-

lems).

5. Confirm that the ignition transformer’s secondary winding is solidly earth grounded. The grounding method is usually through the

transformer case. Dirt, paint, loose mounting hardware, etc., can all be factors.

6. There may be a problem with transients in the main power supply. If you think this may be the problem, you may want to run a ground

wire directly from the pilot assembly back to the electrical panel where the Fireye control is mounted.

M-Series Fuse 2AG 8

amps.

Fireye Part Number: 23-176

PROGRAMMER OR

DEFECTIVE

MEC120



Wiring Arrangements

IMPORTANT: Use moisture resistant wire rated 90°C minimum.

CAUTION: When powered, 560 VAC across S1, S2 with MEUV4, MEUV1, MEUVS4 and MEUVS1; 260 VAC across S1, S2 with MERT4 and MERT1.

CAUTION: Control wiring procedures which deviate from those shown in the diagrams may bypass safety functions designed in the control. Check with the Fireye Repr esentative before deviating from the recommended wiring diagrams.

INTERMITTENT

MAIN VALVE

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

KF-2

KF-1

PILOT VALVE

IGNITION

* For intermittent ignition, connect to terminal 3

FLAME

SCANNER

CONTACTOR

OPERATING CONTROLS

(WATCHDOG)

AIR FLOW

INTERLOCK

FLAME

ROD ONLY

FIGURE 6. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS USING MEP100 AND MEP200 SERIES PROGRAMMERS



INTERMITTENT

MAIN VALVE

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

KF-1

PILOT VALVE

IGNITION

FLAME

SCANNER

CONTACTOR

OPERATING CONTROLS

AIR FLOW

INTERLOCK

FLAME

ROD ONLY

(WATCHDOG)

PRIMARY

SECONDARY

BLOWER MOTERALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

KF-2

KF-1

MAIN FUEL VALVE

IGNITION

FLAME

SCANNER

MAIN FUEL VALVE

(IF USED)

CONTACTOR

OPERATING

CONTROL

AIR FLOW

INTERLOCK

* For intermittent ignition, connect to terminal 3

FLAME

ROD ONLY

KL (WATCHDOG)

FIGURE 7. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS AND PROVISION FOR MAIN FLAME STABILIZATION

USING MEP236 SERIES PROGRAMMERS

FIGURE 8. WIRING ARRANGEMENT FOR DIRECT SPARK IGNITED BURNERS, TWO STAGE OPERATION USING MEP100

AND MEP200 SERIES PROGRAMMERS



FIGURE 9. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS AND INTERRUPTED PILOT USING MEP500 SERIES

INTERMITTENT

BLOWER MOTERALARM

120VAC

50/60Hz

FLAME AMPLIFIER

INTERRUPTED

KF-1

PILOT GAS VALVE

FLAME

SCANNER

MAIN FUEL

CONTACTOR

VALVE

AND IGNITION

TRANSFORMER

GAS PILOT VALVE

OPERATING

CONTROL

KA KB

AIR FLOW

INTERLOCK

FLAME

ROD

ONLY

KL (WATCHDOG)

PRIMARY

SECONDARY

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

KF-1

MAIN FUEL VALVE

IGNITION

* For intermittent ignition, connect to terminal 3

FLAME

SCANNER

CONTACTOR

MAIN FUEL VALVE

(IF USED)

OPERATING

CONTROL

AIR FLOW

INTERLOCK

FLAME

ROD

ONLY KL (WATCHDOG)

PROGRAMMERS

FIGURE 10. WIRING ARRANGEMENT FOR DIRECT SPARK IGNITED BURNERS AND INTERRUPTED IGNITION USING MEP500

SERIES PROGRAMMERS



VOLTAGE

120VAC

50/60Hz

FLAME AMPLIFIER

KF-2

KF-1

FLAME

SCANNER

ENABLE/DISABLE

SOURCE

ISOLATED SWITCHED

OUTPUTS

REFER TO LOAD RATING

OUTPUTS

INPUT

* FUSE F1 CAN BE REMOVED

FLAME

ROD ONLY

KL (WATCHDOG)

PILOT VALVE

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

IGNITION

FLAME

SCANNER

CONTACTOR

MAIN FUEL VALVE

OPERATING

CONTROL

AIR FLOW

INTERLOCK

FLAME

ROD

ONLY

KL (WATCHDOG)

MODULATE CONTACTS

MED8/MED9

DAUGHTER BOARD

LOCATED ON

CONTROLLED BY MEP696/MEP697

ONLY

FIGURE 11. WIRING ARRANGEMENT FOR FLAME SWITCHES USING MEP100 PROGRAMMERS

NOTE: Air Flow LED will blink while flame is detected and KF relay is energized.

FIGURE 12. WIRING ARRANGEMENT FOR PILOT IGNITED BURNERS USING MEP300, MEP400 AND MEP600 SERIES

PROGRAMMERS.



FIGURE 13. ALTERNATE WIRING ARRANGEMENT FOR MEP CONTROLS

MAIN

IGNITION

STOP

PILOT

START

LIMIT SW

FUEL VALVE

ALARM

ON-OFF

HOT

NEUTRAL

LR-1

LR-2

LATCH

AIR FLOW

SWITCH

A. FOR MANUAL

A START-STOP STATION MAY BE ADDED TO REQUIRE OPERATOR START-UP EACH TIME THE BURNER FIRES.

IGNITION

PILOT

B. MULTIPLE BURNER SYSTEMS

IGNITION

PILOT

LIMIT

MANUAL RESET

MAIN GAS VALVE

ALARM

S.P.D.T.

ALARM SILENCE

SWITCH

STOP

START

LR-1

AIR FLOW

BLOWER

LATCH

HOTNEUTRAL

MULTIPLE BURNER SYSTEMS UTILIZING SEMI-AUTOMATIC OPERATION INCORPORATE THE FIREYE MODULAR MICROM CONTROLS IN A CASCADING SEQUENCE WHEN PILOT #1 IS PROVEN. TRIAL FOR IGNITION FOR PILOT #2 BEGINS. WHEN ALL PILOTS ARE PROVEN THE SAFETY SHUTOFF VALVE MAY BE MANUALLY OPENED. FLAME FAILURE OF ANY BURNER WILL TRIP THE MAIN FUEL VALVE AND SOUND ALARM.

THE TOTAL CONNECTED LOAD MUST NOT EXCEED THE RATING OF THE FIRST CONTROL.

VALVE

RELAY COIL

MAIN GAS VALVE

GAS VALVE

RELAY

GAS VALVE

SWITCH

BLOWER

CONTACTOR

FIRST STAGE

SECOND STAGE

CONTACTOR

IMPORTANT: Use moisture resistant wire rated 90°C minimum.



INTERMITTENT

MAIN VALVE

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

SPARK

KF-2

KF-1

PILOT VALVE

IGNITION

For intermittent ignition, connect to terminal 3

FLAME

SCANNER

CONTACTOR

OPERATING

CONTROL

KBKA

Combined current from Terminal 8 must not exceed 9.8 Amps

AIR FLOW

INTERLOCK

FLAME

ROD

ONLY

KL (WATCHDOG)

INTERMITTENT

MAIN FUEL

RUNNING

BLOWER MOTORALARM

120VAC

50/60Hz

FLAME AMPLIFIER

GAS PILOT VALVE

KF-1

PILOT GAS VALVE

AND IGNITION

FLAME

SCANNER

CONTACTOR

VALVE

TRANSFORMER

OPERATING

CONTROL

INTERLOCKS

For intermittent ignition, connect to terminal 3

AIR FLOW

INTERLOCK

FLAME

ROD

ONLY KL

(WATCHDOG)

Combined current from Terminal 8 must not exceed 9.8 Amps

FIGURE 14. BACKWARD COMPATIBLE WIRING USING MEP100 AND MEP200 SERIES PROGRAMMERS (PILOT IGNITED

BURNERS).

FIGURE 15. BACKWARD COMPATIBLE WIRING USING MEP500 SERIES PROGRAMMERS (PILOT IGNITED BURNERS)



SUGGESTED GROUNDING RULES

The MicroM system, being microprocessor based, requires a ground system that provides a zerovoltage reference. The voltage measured from L2 to all other terminals except L1 should be 0 volts.

1. The most effective ground is to run the ground wire in the same raceway as the hot and neutral

from the main distribution service panel (not intermediate sub-panels) to the burner control panel and insure that this ground wire is well bonded to the control panel.

2. The wiring base of the MicroM must have earth ground providing a connection between the sub-

base and the control panel or the burner.

3. The earth ground wire must be capable of conductin g the current to blow the 20A fuse in event

of an internal short circuit. A number 14 AWG copper conductor is adequate, wide straps or brackets are preferred rather than lead wires.

4. The ground path needs to be low impedance (less than 1 ohm) to th e equipment frame which in

turn needs a low impedance to earth ground. For a ground path to be low impedance at RF frequencies, the connection must be made with m inimu m le ngth con ductors h avin g ma ximum surface areas.

5. All connections should be free of nonconductive coatings and protected against rust.

6. Utilizing conduit as a means of providing a ground must be avoided.

7. Installing ground rods at the burner control panel defeats the purpose of a single point ground as

described above and could also present a safety hazard.

INSTALLATION

Do not run high voltage ignition transformer wires in the same conduit with flame detection wiring. Do not run scanner wires in a conduit with line voltage circuits. Ensure the frame of the ignition transformer is securely connected to control panel frame or prefera-

bly the burner frame. The MicroM chassis (MEC120) contains a transient suppressing device connected internally across

hot and neutral and then to the internal bracket. For this to be effective the chassis must be screwed securely into the wiring subbase.

REMOTE DISPLAY

When the ED510 is to be remotely mounted on the front of the control panel, th e ED580 cable must contain a ferrite core, currently supplied by Fireye with the cable. The cable end with the ferrite core must be mounted at the control end. High frequency currents flow more to the surface of the conductor. The 60 Hz ground system, properly designed, has sufficient low-impedance at 60 Hz to maintain all metal surfaces at the same ground reference. But, this same system is unable to provide this at higher frequencies, because of the increased impedance caused by the ‘skin effect’. The purpose of the ferrite core is to provide a high-impedance at these higher frequencies and absorb or block this unwanted energy.

Care must be taken not to route the ED580 cable in close proximity to an y starter motor contactors located in the control panel or across any high voltage ignition wires. Refer to Fireye bulletin E-8002 for proper installation.

COMMUNICATIONS

When interfacing Fireye controls to a communication system, be it an E500, PLC or other microprocessor based device, ferrite cores should also be utilized. Proper twisted shielded pair cable must be utilized. In a multi-drop system, the shields should be tied together within a cabinet and not to any ground point. The shield at the source end of the cable of the multi-drop connection can then be terminated to ground. Source end is defined as the originating end of the communication system

Care must be taken not to route communication cables in close proximity to any starter motor contactors located in the control panel or across any high voltage ignition wires. Refer to Fireye bulletin E-8002 for proper installation.

SCANNERS

The armored cable supplied with the Ultra-Violet and Infrared scanners should be connected to equipment by means of a good mechanical connection such as a conduit fitting. It may be necessary to utilize heat insulator (P/N 35-69) to isolat e the sensing end of the scanner from boiler ground. Care must be taken not to route the scanner cable across the high vol tage ignition cable. The high energy ignition cable should be checked periodically for cracking, connections and aging.

In applications using flame rod units and the MERT amplifier, it may be beneficial to route a separate return wire from the S1 terminal to the flame rod assembly. This will minimize the effects of transient currents flowing into the MicroM.

In all cases, scanner wires should be routed in separate conduit and not joined with any high voltage AC or ignition cables.



MAINTENANCE

Periodically, the spark electrode should be inspected for proper gapping and cracked ceramics. At ignition time, the high energy from the ignition transformer will attempt to conduct to t he point of least resistance and with an improper spark gap, where the conduction takes place will no longer be controlled.

The VA rating of the control transformer must be sized to handle the inrush currents of the pilot solenoid and ignition transformer at PTFI and then the inrush currents of the main fuel valve assembly at MTFI time.

Inspect neatness of wiring in junction boxes and cabinets. It is best to have connections short and direct and also not having wires bunched up and tied off. Also, connections should be periodically inspected for tightness and corrosion.

INSTALLATION - UV SCANNERS

Where possible, obtain the burner manufacturer’s instructions for mounting the scanner. This information is available for most standard burners. The scanner mounting should comply with the following general instructions:

1. Position the UV1A, UV2 scanner within 30 inches of the flame to be monitored; the 45UV5

within 72 inches, closer if possible.

2. Select a scanner location that will remain within the ambient temperature limits of the UV Scan-

ner. If cooling is required, use an insulating coupling (Fireye P/N 35-69 for UV1A, UV2 Scanners, P/N 35-127-1 for 45UV5) to reduce conducted heat.

3. The UVlA, UV2, 45UV5 Scanners are designed to seal off the sight pipe up to 1 PSI pressure.

Higher furnace pressures should be sealed off. To seal off positive furnace pressure up to 100 PSI for UV1A, UV2 Scanners, install a quartz window coupling (#60-1 257) For 45UV5 Scanners, use #60-1199 coupling. Add cooling air to reduce the scanner sight pipe temperature.

4. Install the scanner on a standard NPT pipe (UV1A: 1/2", UV2: 3/8", 45UV5: 1") whose position

is rigidly fixed. If the scanner mounting pipe sights through the refractory, do not extend it more



than halfway through. Swivel flanges are available if desired (#60-302 for UV1A, UV2 Scan-

SCANNER MUST HAVE UNOBSTRUCTED

VIEW OF FLAME

NOT THIS NOT THIS BUT THIS

FLAME MUST COMPLETELY COVER

SIGHT OPENING

NOT THIS

NOT THIS BUT THIS

The maximum UV signal from a flame is found in the first one-third of the visible flame taken from the point where the flame begins. The scanner sight pipe should be aimed at this area.

DO NOT EXTEND MORE THAN HALF-WAY INTO REFRACTORY

SCANNER

FORCED CLEAN AIR (FROM DISCHARGE OF FAN)

METHODS OF COOLING SCANNER

INSULATING

TUBING

SEALING

UNION

FORCED

AIR

EXTEND SIGHTING TUBE 6”(152.4) OR 8”(203.2)

DO NOT EXTEND MORE THAN HALF-WAY INTO REFRACTORY

ners, #60-1664-3 for 45UV5). The sight pipe must permit an unobstructed view of the pilot and/ or main flame, and both pilot and main flames must completely cover the scanner field of view.

5. Smoke or unburned combu stion gases absorb ultraviolet energy. On installations with negative

pressure combustion chambers, a small hole drilled in the UV1A, UV2 sight pipe will assist in keeping the pipe clean and free from smoke. For positive pressure furnaces, provide clean air to pressurize the sight pipe, if necessary.

6. Two UV1A or UV2 Scanners may be installed on the burner if it is necessary to view two areas

to obtain reliable detection of the flame. They should be wired in parallel. Only one repetitive self- checking 45UV5 Scanner may be installed on a burner.

To increase scanner sensitivity with UV1A, UV2 Scanners, a quartz lens permits location of the scanner at twice the normal distance. Use 1/2" x 1 1/2" pipe nipple between UV1 A Scanner and the coupling. Use 3/8" pipe nipple and a 1/2" x 3/8" bushing on UV2 installations.

7. Request the assistance of any Fireye field office for recommendations of a proper scanner instal-

lation on a non-standard application.

TYPICAL SCANNER INSTALLATIONS

OPERATION — 45UV5 SELF-CHECKING UV SCANNER

SHUTTER OPEN

SHUTTER CLOSED

3.7 SEC.

0.4 SEC. TIME

Self-checking ultraviolet scanners should be used in applications where burn er firing operation is continuous or where the burner is on for long peri ods of time without recycling. In addition, ultraviolet self-checking systems are mandatory in some locations.

The operation of this type of system consists of maintaining the flame scanning capabilit y at all times while also proving that the ultraviolet tube is firing properly. This is done periodically by mechanically closing off the sight of the UV tube and checking to make sure that the flame signal goes away. A shutter assembly in the 45UV5 scanner performs this function. The diagram below explains the process further.

If the shutter assembly in the scanner fails, the tube is faulty, or there is insufficient power to the scanner, the MicroM will LOCKOUT and display the following message LOCKOUT CHECK SCANNER. The ultraviolet tube is replaceable (P/N 4-314-1).

A lockout will result if a minimum signal is detected for three consecutive shutter closed periods.



WIRING - UV SCANNERS

To connect the scanner to the control, the UV1A Scanner is supplied with 36” or 72” of flexible cable.

The 45UV5 is supplied with four 72 inch lead wires. Install them in a suitable length of flexible armor cable and connect it to the control. A conduit connector is supplied w ith the scan ner. Connect black wires (shutter) to terminals L1, L2; red wires (UV tube) to terminals S1, S2.

If it is necessary to extend the scanner wiring, the following instructions apply: Scanner wires should be installed in a separate conduit. The wires from several scanners may be

installed in a common conduit.

1. Selection of Wire

a. Wiring: For extended scanner wiring up to 500 feet, and for shorter lengths to reduce signal

b. Asbestos insulated wire should be avoided. c. Multiconductor cable is not recommended without prior factory approval.

2. High voltage ignition wiring should not be installed in the same conduit with flame detector

wires.

loss, use a shielded wire (Belden 8254-RG62 coaxial cable, or equal) for each scanner wire of UV1A, UV2 and each red wire of the 45UV5. The ends of the shielding must be taped

and not grounded.



INSTALLATION—INFRARED SCANNER TYPE 48PT2

CENTER LINE

OF MAIN FLAME

SCANNER

LINE-OF-SIGHT

SCANNER TARGET

ABOVE REFRACTORY

COMBUSTION

CHAMBER

PILOT

BURNER

SCANNER

SIGHTING TUBE

MAIN

BURNER

SCANNER MUST NOT

SIGHT REFRACTORY

Where possible, obtain the burner manufacturer’s instructions for mounting the scanner, otherwise proceed as follows:

A single scanner is used to detect both pilot and main flames. The sight pipe on which the scanner mounts must be aimed so that the scanner sights a point at the intersection of main and pilot flames.

Proper scanner positioning must assure the following:

1. Reliable pilot flame signal.

2. Reliable main flame signal.

3. A pilot flame too short or in the wrong position to ignite the main flame reliably, must not be

detected.

4. Scanner must have an unobstructed view of flame being mon itored.

5. Flame being monitored must complete ly cover the scan ner field of view.

6. To avoid nuisance shutdowns, it is important to avoid sighting hot refractory and to keep scanner

temperature low (below 125° F) (50°C).

When the proper position has been established, drill a hole through the furnace wall and install a 4" to 8" length of threaded 1/2" black iron pipe on which to mount the 48PT2 scanner.

7. When satisfactory sighting position has been confirmed by operating tests, the sight tube should

be firmly welded in place.

Wiring

Attach the cable supplied with the scanner to a junction box. Splice the cable wires to a pair of wires not smaller than #l8. Install the complete run in a separate conduit to the control. Continuous con- duit bonding between scanner and the control is mandatory! Scanner may be located up to 100 feet from control. Do not pass scanner wiring through any junction box containing other wires. Do not run other wires through scanner conduit. Asbestos insulated wire should be avoided.

Keeping the Scanner Cool

The Infrared Scanner (Temperature Limit 125° F) should never get too hot to grasp comfortably in the hand. Keep the scanner cool by one or more of the following methods.

1. Use 6" to 8" length of pipe between scanner and hot furnace front plate.

2. Use insulating tube (P/N 35-69) on the end of the iron pipe.

3. Force air into sighting tube. Use Fireye Sealing Union (P/N 60-801).

4. Make sure sighting tube does not extend more than halfway into refracto ry wal l.

INSTALLATION - 69NDl FLAME ROD

WRONG POSITION

OF ROD

INADEQUATE FLAME

PILOT BURNER

CORRECT POSITION

OF PILOT FLAME

CORRECT

POSITION

OF ROD

BOMB FIN GROUNDING ASSEMBLY THREADED ROD ASSEMBLY

The 69NDl flame rod proves a gas pilot flame and/or main gas flame. It is a spark plug type unit consisting of 1/2" NPT mount, a KANTHAL flame rod, a glazed porcelain insulating rod holder and a spark plug connector for making electrical connections. The 69ND1 is available in 12", 18" or 24" lengths.

The flame rod may be located to monitor only the gas pilot flame or both the gas pilot and main gas flames. It is mounted on a 1/2" NPT coupling.

The following instructions should be observed:

1. Keep flame rod as short as possible.

2. Keep flame rod at least 1/2" from any refractory.

3. Flame rod should enter th e pilot flame from the side so as to safely prove an adequate pilot

flame under all draft conditions.

4. If the flame is nonlum inous (air and gas mixed before burni ng), the electrode t ip should extend

at least 1/2" into the flame, but not more than halfway through.



5. If the flame is partly luminous, the electrode tip should extend only to the edge of the flame. It is

not necessary to maintain absolutely uninterrupted contact with the flame.

6. It is preferable to angle the rod downward to minimize the effect of sagging and to prevent it

from coming in contact with any object.

7. An adequate grounding surface for the flame must be provided. The grounding surface in actual

contact with the flame must be at least four times greater than the area of the portion of the flame rod in contact with the flame. It is essential to adjust the flame rod and ground area ratio to provide a maximum signal reading.

NOTE: Interference from the ignition spark can alter the true signal reading by add ing to, or subtracting from it. This trend sometimes may be reversed by interchanging the primary wires (line voltage) to the ignition transformer. This interferen ce can also be reduced b y the addition of grounded shielding between the flame rod and ignition spark.

8. Proven types of flame grounding adapters, as shown belo w, may be used to provide adequate

grounding surface. High temperature stainless steel should be used to minimize the effect of metal oxidation. This assembly may be welded directly over the pilot or main burner nozzle.



MAINTENANCE

Type 48PT2 Infrared and Type UV1A, UV2 and 45UV5 Ultraviolet Scanners

The viewing area of the scanner must be kept clean. Even a small amount of contamination will reduce the flame signal reaching the detector by a measurable amount. Wipe the viewing area routinely using a soft cloth dampened with concentrated detergent.

— Type 48PT2 Scanners include a replaceable #4-263-1 Firetron cell. — Type 45UV5 Scanners include a replaceable #4-314-1 UV tube.

Type 69ND1 Flame Rod

The flame rod and its insulator should be kept clean by washing routinely with soap and water. Rods should be routinely replaced as they oxidize.

Flame Signal Strength

Routine observation of the flame signal strength will forewarn any deterioration in the capability of the flame detector or its application.

Contacts

There are no accessible contacts in the MicroM. Where contacts are used, their design assures long trouble-free life when the load circuits are maintained within the published load ratings.

Humidity

In areas of high humidity, the control chassis should be removed and placed in a dry atmosphere when the system is expected to be out of service for an extended period.

Periodic Safety Check

It is recommended that a procedure be established to test the complete flame safeguard system at least once a month. This test should verify the proper operation of all limit switches and safety interlocks as well as flame failure protection and fuel safety shutoff valve tightness.

Rotation

It is recommended that control and scanner units purchased as spares be installed periodically to ensure proper operation.

FIGURE 16. Mounting 45UV5 Scanner

2.75” (70)

#60-1664

1” SWIVEL MOUNT

#35-127

HEAT INSULATING NIPPLE

STANDARD MOUNTING

FOR TYPES OF SCANNERS

AIR ENTRY

(PURGE AND

COOLING)

#60-1664

1” SWIVEL MOUNT

#35-127

HEAT INSULATING NIPPLE

MOUNTING FOR HIGH TEMP. APPLICATIONS

PURGE AIR ENTRY

AIR/ENTRY

(PURGE ABD COOLING)

#35-127

HEAT INSULATING NIPPLE

1” SIGHT PIPE

(BY OTHERS)

AIR ENTRY

(PURGE AND

COOLING)

ALTERNATE STANDARD MOUNTING

(NOT ADJUSTABLE)

#60-1664

1” SWIVEL MOUNT

#35-127

HEAT INSULATING NIPPLE

MOUNTING FOR SPECIAL

APPLICATIONS — HIGH TEMP.

3/8” PLUG

(BY OTHERS)

AIR/ENTRY

(PURGE AND COOLING)

#35-127

HEAT INSULATING NIPPLE

#35-127

HEAT INSULATING NIPPLE

#60-1199-1, 2

SEALING COUPLING WITH QUARTZ

WINDOW. REQUIRED WHEN SCANNER

LENS IS EXPOSED TO EXCESSIVE

FURNACE OR WINDBOX PRESSURE

APERTURE

#53-121

#60-1664

1” SWIVEL MOUNT

RETAINER

#34-181

2.75” (70)

2 1/4”

(57.2mm)

UV1A3 3 FT. TC-ER CABLE

UV1A6 6 FT. TC-ER CABLE

1 1/2”

(38.1MM)

UV8A

1/2 X 14 ST.

PIPE

1 IN. DIA. (25.4mm)

2.53”

(64.3mm)

SHIELDING OF 6 FT. (1830mm)

LEADS IS REQUIRED

.700 DIA. FITTING (17.8mm)

FOR WATER-TIGHT CONDUIT

WARNING: The leads from the UV8A Scanner to the control must be shielded to prevent electrical

noise from generating a false flame signal to the control.

1.06 IN DIA (27.0mm)



FIGURE 17. UV8A Scanner



FIGURE 18. Mounting UV1A/UV1B Scanners

UNION COUPLING

#60-1257 WITH QUARTZ WINDOW

#60-1290 WITH QUARTZ LENS

2”

(51)

1/2” NIPPLE

HEAT INSULATOR

#35-69

1/2” SWIVEL MOUNT

#60-302

MOUNTING WITH HEAT INSULATING NIPPLE

1/2” NIPPLE

1/2” SWIVEL MOUNT

#60-302

STANDARD MOUNTING

BURNER FRONT PLATE

1/2” UV SCANNER

TYPE UV-1A

1/2” NIPPLE

1/2” SWIVEL MOUNT

#60-302

STANDARD MOUNTING WITH PURGING/COOLING AIR

1/2” NIPPLE 1/2” NIPPLE

TEE-PIECE

1/2” NIPPLE

1/2” SWIVEL MOUNT

#60-302

MOUNTING FOR EXCESSIVE FURNACE OR WINDBOX

PRESSURE WITH PURGING/COOLING AIR

1/2” NIPPLE

TEE-PIECE

1/2” NIPPLE

AIR/ENTRY

(PURGE ABD COOLING)

1/2” SIGHT PIPE

AIR/ENTRY

(PURGE AND COOLING)

2”

(51)

2”

(51)

2”

(51)



M-SERIES TO M-SERIES II TO MICROM CROSS REFERENCE LISTING

M-SERIES M-SERIES II REPLACEMENT MODULES MicroM REPLACEMENT MODULES

Part

Number

UVM1D MC120 MAUV1T MP100 N/A MEC120 MEUV1 MEP100 N/A

UVM1F MC120 MAUV1 MP100 N/A MEC120 MEUV4 MEP100 N/A

TFM1D MC120 MART1T MP100 See Note #1 MEC120 MERT1 MEP100 N/A

TFM1F MC120 MART1 MP100 See Note #1 MEC120 MERT4 MEP100 N/A

UVM2 MC120 MAUV1 MP230 OFF MEC120 MEUV4 MEP230 C

TFM2 MC120 MART1 MP230 OFF MEC120 MERT4 MEP230 C

UVM3 MC120 MAUV1 MP230 ON MEC120 MEUV4 MEP230 O

TFM3 MC120 MART1 MP230 ON MEC120 MERT4 MEP230 O

UVM3H MC120 MAUV1 MP230H ON MEC120 MEUV4 MEP230H O

TFM3H MC120 MART1 MP230H ON MEC120 MERT4 MEP230H O

UVM5 MC120 MAUV1 MP560 ON MEC120 MEUV4 MEP560 O

UVM6 MC120 MAUV1 MP560 See Note #2 MEC120 MEUV4 MEP560 C

- Programmer Dipswitches apply to MP230H, and MP560 only.

- Note #1: For Standing Pilot, clip out red jumper on MP100. See fig 19

- Note #2: Dipswitch #8 ON when red jumper of UVM6 is clipped.

Chassis Amplifier ProgrammerProgrammer

Dipswitch #8

- N/A — Not Applicable

- Dipswitch #8 sets Recycle / Non-Recycle Operation.

- MP560 Programmer Module has “Check-Run” Switch.

on page 55.

Chassis Amplifier Programmer Programmer

- N/A — Not Applicable

- Programmer Dipswitches apply to MEP200, and MEP500 Series Programmers

- Dipswitch #6 sets Recycle / Non-Recycle Operation. (O = Non-Recycle, C = Recycle)

- MEP500 Series Programmer Module has “Check-Run” Switch.

Dipswitch #6

PURGE PTFI M-Series II PROGRAMMER DIPSWITCH SETTINGS MicroM PROGRAMMER DIPSWITCH

TIME TIME #1 #2 #3 #4 #5 #6 #7 #1 #2 #4

7 5 ON OFF OFF OFF OFF ON OFF C C C

7 5 OFF ON OFF OFF OFF ON OFF C C C

30 5 OFF OFF ON OFF OFF ON OFF O C C

7 10 OFF ON OFF OFF OFF OFF ON C C 0

90 5 OFF OFF ON ON OFF ON OFF O O C

30 10 OFF OFF ON OFF OFF OFF ON O C O

60 10 OFF OFF OFF ON OFF OFF ON C O 0

90 10 OFF OFF ON ON OFF OFF ON O O 0

- Dipswitches #1 through #5 set Purge Timing

- Dipswitches #6 and #7 set TFI Timing

M-SERIES TIMING CARDS PURGE TIME PTFI TIME

MT55

MT74

MT304

MT710

MT904

MT3010

MT6010

MT9010

5 5

7 4

30 4

7 10

90 4

30 10

60 10

90 10

- Dipswitches #1 through #2 set

- Dipswitch #4 sets TFI Timing

SETTINGS

Purge Timing



FIGURE 19. Red jumper wire

Red wire



NOTICE

FIREYE MC-5000 3 Manchester Road MAY 10 2017 Derry, New Hampshire 03038 USA Supersedes JUNE 9, 2015 www.fireye.com



WARRANTIES

When Fireye products are combined with equipment manufactured by others and/or integrated into systems designed or manufactured by others, the Fireye warranty, as stated in its General Terms and Conditions of Sale, pertains only to the Fireye products and not to any other equipment or to the combined system or its overall performance.

FIREYE guarantees for one year from the date of installation or 18 months from date of manufacture of its products to replace, or, at its option, to repair any product or part thereof (except lamps and photocells) which is found defective in material or workmanship or which otherwise fails to conform to the description of the product on the face of its sales order. THE FOREGOING IS IN LIEU OF

ALL OTHER WARRANTIES AND FIREYE MAKES NO WARRANTY OF MERCHANTABILITY OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED. Except as specifically stated in

these general terms and conditions of sale, remedies with respect to any product or part number manufactured or sold by Fireye shall be limited exclusively to the right to replacement or repair as above provided. In no event shall Fireye be liable for consequential or special damages of any nature that may arise in connection with such product or part.

Fireye MEC120, MEC120R, MEC120D, MEC120RD, MEC120C Series Manual

Specifications and Main Features

Frequently Asked Questions

User Manual