Honeywell R7140G User Manual

66-1153-03

R7140G,L,M
Burner Control Modules

INSTALLATION INSTRUCTIONS

FEATURES

• Device status available to ModBus™ through S7810M
card or S7800A1001 Series 5 Keyboard Display.

• Safety features:

— Interlock check.
— Closed loop logic test.
— Dynamic AMPLI-CHECK™.
— Dynamic input check.
— Dynamic safety relay test.
— Dynamic self-check logic.
— Expanded safe-start check.
— High Fire Purge Switch test (R7140L only).
— Internal hardware status monitoring.
— Low Fire Start Switch test.
— Tamper resistant timing and logic.

• Application flexibility.

• 0.8 or 3.0 second Flame Failure Response Time (FFRT),
depending on amplifier selected.

• Dependable, long-term operation provided by
microcomputer technology.

• Five LEDs for sequence information. See Fig. 1.

APPLICATION

The Honeywell R7140G,L,M Burner Control Modules are
microprocessor-based integrated burner controls for
automatically fired gas, oil or combination fuel single burner
applications. The Burner Control Module system consists of a
Relay Module, Q520A Subbase, Amplifier and Purge Card.
Options include S7800 Keyboard Display Modules (KDM).

The R7140 Burner Control Modules directly replace many
BC7000 PM720G,L,M, and many R4150G,L,M and
R4140G,L,M units using the existing Q520A 20-terminal
Wiring Subbase.

The R7140 can be demonstrated or tested on the FSP5004
tester. Note that the R7849 UV Amplifier or the R7851 Optical
Flame Amplifier cannot be tested.

• Five function Run/Test Switch.

• Interchangeable plug-in flame amplifiers.

• Nonvolatile memory; history files and sequencing
status are retained after loss of power and can be
viewed using the Keyboard Display Module
S7800A1001 (sold separately).

• Report generation (optional) through modbus™.

NOTE: Check Service Notes on page 7 and Static Check-

out on page 26 prior to installation of R7140.

• Burner controller data (optional):

— Lockout/alarm status.
— Total cycles of operation.
— Total hours of operation.

The R7140G,L,M is programmed to provide a level of safety,
functional capability and features beyond the capacity of
conventional controls.

Functions provided by the R7140G,L,M include automatic
burner sequencing, flame supervision, system status
indication, system or self-diagnostics and troubleshooting.

• Status of configuration jumpers.

• Status of Run/Test Switch.

R7140G,L,M BURNER CONTROL MODULES

SEQUENCE
STATUS
LEDs

RESET
PUSHBUTTON

FLAME
SIMULATOR INPUT

FLAME CURRENT
TEST JACKS

RUN/TEST SWITCH

PLUG-IN

PURGE

CARD

DUST

COVER

RELAY

MODULE

FLAME

AMPLIFIER

M7552B

Fig. 1. Burner Control Module and sequence status LEDs.

SPECIFICATIONS

Electrical Ratings (See Table 1):

Voltage and Frequency: 120 Vac (+10%/-15%), 50 or 60 Hz

(±10%).

Power Dissipation in the Run Mode: 10W maximum.
Maximum Total Connected Load: 2000VA.
Fusing—Total Connected Load: 15A fast blow, type SC or

equivalent.

Environmental Ratings:

Ambient Temperature:

Operating: -40°F to +140°F (-40°C to +60°C).

Storage: -40°F to +150°F (-40°C to +66°C).
Humidity: 85% relative humidity, continuous, noncondensing.
Vibration: 0.5G environment.

Weight:

With Dust Cover and Q520A Subbase: 4 lb., 5 oz. (1.96 kg).

Dimensions:

See Fig. 2.

Approvals:

Underwriters Laboratories Inc. UL, cULus Component

Recognized.
Federal Communications Commission: Part 15,

Class A—Emissions.

Mounting:

Q520A 20-terminal Subbase for panel mounting.

Required Components:

Plug-in Flame Signal Amplifier. See Table 1.
Plug-in Purge Timer Cards. See Table 2.

66-1153—03 2

R7140G,L,M BURNER CONTROL MODULES

Table 1. Flame Detection Systems.

Plug-in Flame Signal Amplifiers Applicable Flame Detectors

Flame

Failure

Response

a

Type Color Self-Checking Model

Rectification Green Dymanic Self-

Check

No

No

Dynamic Ampli­Check®

Dynamic Ampli­Check®

Dynamic Self
Check

R7824C

R7847A

R7847A

R7847B

R7847B

R7847C

Time (sec)

b,c,h

3 Gas, oil,

g

0.8/1 or 2/3 Gas Rectifying Flame Rod

g

2/3 Gas, oil,

d,g

0.8/1 or
2/3

d,g

2/3 Gas, oil,

c,h

3 Gas, oil,

Infrared Red No R7848A 2/3 Gas, oil,

Fuel Type Models

coal

Ultraviolet (Purple
Peeper®)

C7024E,F

C7004, C7007, C7011

Holders

i

Ultraviolet (Purple

coal

Peeper®)

Gas Rectifying Flame Rod

Holders

i

Ultraviolet (Purple

coal

Peeper®)

Ultraviolet (Purple

coal

Peeper®)

Complete Assemblies:
C7008, C7009, Q179

C7012A,C.

C7004, C7007, C7011
Complete Assemblies:
C7008, C7009, Q179

C7012A,C

C7012E,F

Infrared (Lead Sulfide) C7015

coal

d

2/3 Gas, oil,

b

2/3 Gas, oil,

coal

coal

coal

Gas, oil Ultraviolet

Red/

Dynamic Ampli­Check®

No R7852A 2/3 Gas, oil,

R7848B

White

Dynamic Ampli­Check®

R7852B

Ultraviolet Purple No R7849A 0.8/1 or

2/3

Dynamic Ampli­Check®

Dynamic Self­Check

Blue Dynamic Self-

Check

Optical White Dymanic Ampli-

R7849B

R7861A

R7886A

R7851B 0.8/1 or 2/3 Gas, oil,

Check®

Dynamic Self­Check

a

Flame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES and R7140 Relay Module.

b

R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.

c

Circuitry tests all electronic components in flame detection system (amplifier and detector) 12 times a minute during burner

R7851C

d

0.8/1 or
2/3

c,e

0.8/1 or
2/3

c,e

2/3 Gas, oil,

c

2/3 Gas, oil,

Gas, oil Ultraviolet

Gas, oil,
coal

coal

coal

coal

Infrared (Lead Sulfide) C7015

Infrared (Lead Sulfide) C7915

Infrared (Lead Sulfide) C7915

(Minipeeper)

(Minipeeper)

C7027, C7035, C7044

C7027, C7035, C7044

Ultraviolet C7061

Ultraviolet (Adjustable

C7076

Sensitivity)

Optical (UV, Visible

C7927, C7962

Light)

Optical (UV only) C7961

f

f

operation and shuts down burner if detection system fails.

d

Circuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.

e

200/220/240 Vac applications require a 120 Vac, 10 VA minimum stepdown transformer (not provided) to drive the shutter.
Applies to R7886A series 2 or greater; R7861 series 1 or greater. Fig. 2 shows flame detector wiring.

f

Use C7027, C7035 and C7044 Flame Detectors only on burners that cycle on-off at least once every twenty-four hours. Use
C7061A Ultraviolet Detector with R7861A Amplifier or C7076A Flame Detector with R7886A Amplifier as ultraviolet flame detec­tion system for appliances with burners that remain on continuously for twenty-four hours or longer.

g

R7847A,B Amplifiers with 0.8/1 second FFRT should NOT be used with C7012A,C Solid State Ultraviolet Detectors.

h

R7824C Series 2 and greater and R7847C Series 4 or greater, check flame detector system when flame reaches 1.5 Vdc or at

4.5 seconds, whichever occurs first.

NOTE: R7824C Series 2 or greater and R7847C Series 4 or greater, pulse the shutter when signal of 1.5 Vdc is sensed. Display

readings of 0.7 to 2.4 Vdc are common.

i

Order flame rod separately; see flame detector Instructions for holder.

3 66-1153—03

R7140G,L,M BURNER CONTROL MODULES

Table 2. Plug-in Purge Timer Cards.

Pre-Purge Timing Product Number

7 ST7800A1013

30 ST7800A1039

40 ST7800A1047

60 ST7800A1054

90 ST7800A1062

Above times cover the Purge timings of the R4140/50 Pro-

grammers and PM720.

Other timings exist—consult the Tradeline catalog for com-

plete list of ST7800 Purge timers.

Accessories:

The following accessories enhance the R7140 Burner Control

Module and are available through local 7800 SERIES
distributors.

Keyboard Display Modules (KDM):

S7800A1001 English language.
S7800A1035 French language.
S7800A1043 German language.
S7800A1050 Italian language.

S7800A1068 Spanish language.

S7800A1118 Katakana (Japanese) language.

S7800A1126 Portuguese language.

S7800A1142 English language.

Communications:

S7810A1009 Data ControlBus Module™ (if no KDM is

used).

S7810M1003 ModBus™ Module.

Miscellaneous:

S7820A1007 Remote Reset Module.

S7830A1005 Expanded Annunciator, 120 Vac, 50/60 Hz.

203541 Data ControlBus Connector, 5-wire.

203765 Remote Display Mounting Bracket.

221729 Dust cover, Relay Module.

50023821-001 Keyboard Display Module Cover, NEMA 4,

clear.

50023821-002 Keyboard Display Module Cover, NEMA 4,

clear with reset button.
205321 Flush Display mounting kit.
221818A Extension Cable, display, 5 ft. (1524 mm).
221818C Extension Cable, display, 10 ft. (3048 mm).
FSP5004 Tester.
123514A Rectification Flame Simulator.
203659 Ultraviolet Flame Simulator.

BURNER CONTROL

5-3/4 (146)

1-1/4

(32)

(127)

5

POWER
PILOT
FLAME
MAIN
ALARM

RESET

S

5

(127)

7

(177)

_

+

6-5/32

(156)

M22604

Fig. 2. Mounting dimensions of R7140G,L,M Burner Control Module with Q520A Subbase, in in. (mm).

66-1153—03 4

R7140G,L,M BURNER CONTROL MODULES

Table 3. Terminal Ratings.

Terminal No. Description Ratings

G

Earth G

Flame Sensor Earth Ground

Earth Ground

a

a

—

—

L2(N) Line Voltage Common —

L1 Line Voltage Supply (L1) 120 Vac (+10/-15%), 50 or 60 Hz (±10%).

3 Lockout/Running Interlock 120 Vac, 8A run, 43A inrush.

4 Pre-Ignition Interlock Input 120 Vac, 1 mA.

5 Pilot Valve/Ignition 120 Vac. See Table 4.

6 Interrupted/Intermittent Pilot Valve/First Stage Oil Valve 120 Vac. See Table 4.

7 Main Fuel Valve 120 Vac. See Table 4.

8 Burner Motor 120 Vac, 9.8 AFL, 58.8 ALR (inrush).

9 Alarm 120 Vac, 1A pilot duty.

10 Firing Rate High Fire 120 Vac, 75 VA pilot duty.

11 Firing Rate Common 120 Vac, 75 VA pilot duty.

12 Firing Rate Modulate 120 Vac, 75 VA pilot duty.

13 Low Fire Switch Input 120 Vac, 1 mA.

14 Firing Rate Low Fire 120 Vac, 75 VA pilot duty.

15 High Fire Switch Input 120 Vac, 1 mA.

16 Burner Controller and Limits 120 Vac, 1 mA.

17 Shutter 120 Vac, 0.5A.

18 Ignition

120 Vac,

4.5A ignition.

F Flame Sensor 60 to 220 Vac, current limited.

a

The R7140 must have an earth ground providing a connection between the subbase and the control panel or the equipment. The earth
ground wire must be capable of conducting the current to blow the 15A fast blow fuse (or breaker) in the event of an internal short
circuit. The R7140 needs a low impedance ground connection to the equipment frame, which, in turn, needs a low impedance
connection to earth ground.

Table 4. Terminal Ratings.

Terminal Typical Load Maximum Rating at 120 Vac, 60 Hz

5 or 6 Ignition

Transformer/Pilot

4.5A ignition and 50 VA pilot duty, or

2.5A ignition and 75 VA pilot duty.

Valve/First Stage Fuel Valve

7 Main Fuel Valve(s) (solenoid/

motorized/diaphragm) and
Vent Valve, if required

250 VA pilot duty or 65 VA pilot duty in parallel with motorized valve(s) using a total of
1150 VA locked rotor (inrush), 460 VA to open, and 250 VA to hold or motorized valve(s)
using a total of 1500 VA locked rotor (inrush), 600 VA to open, and 250 VA to hold.

5 66-1153—03

R7140G,L,M BURNER CONTROL MODULES

WARNING

WARNING

Table 5. Sequence Timing for Normal Operation.

Flame

Establishing

Period

Device Initiate Standby Purge

R7140G 10 sec. * ** 4 or 10

R7140L 10 or 15

R7140M 10 sec. or

a

30 seconds with JR2 clipped and jumper from terminal 8 to terminal 15.

* STANDBY and RUN can be an infinite time period.

** PURGE will be determined by which ST7800A purge card is selected; 15 timings are available from 2 seconds to 30 minutes.

sec.

10, 15

a

sec.

or

intermittent.

a

sec.

intermittent

Post

Purge

Run

Timing Interlock Circuits

* 15 sec. Pre-Ignition,

Running, Low Fire

Pre-Ignition,
Lockout High and
Low Fire

Pre-Ignition,
Running, isolated
Low Fire.

Firing

Rate

Circuit

4-wire
modulating

2-wire
isolated
On-Off-On
contacts

Energy
Saving

Pre-Purge

No UL/CSA

Approval

BodiesPilot Main

Modulating

FM/IRI
Modulating

UL/CSA
On-Off.

Code

NOTE: Allowable inrush can be up to ten times the pilot

duty rating.

EXAMPLE: Pilot duty rating = 50 VA.

At 120 V, running current is:

50/120 = 0.42A.

Maximum allowable inrush is ten times 0.42A = 4.2A.

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a hazardous
condition.

2. Check the ratings given in the instructions and marked
on the product to make sure the product is suitable for
the application.

3. Installer must be a trained, experienced, flame
safeguard service technician.

4. After installation is complete, check out the product
operation as provided in these instructions.

Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.

To prevent possible hazardous burner operation, verify
safety requirements each time a control is installed on
a burner.

Electrical Shock Hazard.
Can cause serious injury or death.

Disconnect the power supply before beginning
installation. More than one power supply disconnect
may be required.

IMPORTANT

1. Wiring connections for the relay modules are unique;
therefore, refer to Fig. 4–11 or the correct
Specifications for proper subbase wiring, and
sequence charts.

2. Wiring must comply with all applicable codes,
ordinances and regulations.

3. Wiring must comply with NEC Class 1 (Line Voltage)
wiring.

4. Loads connected to the R7140 must not exceed
those listed in the Specifications; see Table 3 and 4.

5. Limits and interlocks must be rated to simultaneously
carry and break current to the ignition transformer,
pilot valve, and main fuel valve(s).

6. All external timers must be listed or component
recognized by authorities who have jurisdiction for
the specific purpose for which they are used.

7. For on-off gas-fired systems, some authorities who
have jurisdiction prohibit the wiring of any limit or
operating contacts in series between the flame
safeguard control and the main fuel valve(s).

8. Two Flame Detectors can be connected in parallel
with the exception of flame detectors C7927, C7915,
C7961, and C7962.

9. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used
in accordance with the instructions, may cause
interference to radio communications. It has been
tested and found to comply with the limits for a
Class A computing device 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 may cause
interference; in which case, the users at their own
expense may be required to take whatever measures
are required to correct this interference.

10.This digital apparatus does not exceed the Class A
limits for radio noise for digital apparatus set out in
the Radio Interference Regulations of the Canadian
Department of Communications.

66-1153—03 6

R7140G,L,M BURNER CONTROL MODULES

Location

Humidity

Install the relay module where the relative humidity never
reaches the saturation point. The relay module is designed to
operate in a maximum 85 percent relative humidity
continuous, noncondensing moisture environment.
Condensing moisture may cause a safety shutdown.

Vibration

Do not install the relay module where it could be subjected to
vibration in excess of 0.5G continuous maximum vibration.

Weather

The relay module is not designed to be weathertight.
When installed outdoors, protect the relay module using an
approved weathertight enclosure.

Final Wiring Check

1. Check the power supply circuit. The voltage and

frequency tolerance must match those of the R7140. A
separate power supply circuit may be required for the
R7140. Add the required disconnect means and
overload protection.

2. Check all wiring circuits and complete the Static
Checkout, Table 8, before installing the R7140 on the
subbase.

3. Install all electrical connectors.

4. Restore power to the panel.

Service Notes:

Per industry standards, a conduit seal or a cable type that is
sealed is required to be installed in a device that can result in
flammable gas or flammable liquid flow through a conduit or
cable to an electrical ignition source in the event of a seal
leakage or diaphragm failure. This could be on the gas valves,
or gas or oil pressure regulators.

Check the Q520 Wiring Subbase terminals against the typical
wiring drawings, Figures 7, 8, 12, 13, 17, or 18.

If wires are attached to terminals that are unused in the
figures, DO NOT INSTALL THE R7140 until you have
identified the connections’ functions. Most likely the old
subbase terminals were used as tie points, so removing the
wires, capping with a wire nut, and tucking the wire down into
the subbase is all that needs to be done.

Make sure the wiring subbase of the old device is a
20-terminal Q520 (four rows of 5 terminals).

Make sure the system Controller is connected to the correct
terminal on the Q520 wiring subbase. It may be in a wire nut
tucked into the subbase. It needs to be connected to a
terminal (like terminal 4 or 16).

Make sure there is an electrical service ground wire
connection to the G terminal in the wiring subbase.

R4140G or BC7000 with PM720G replacement.

— If the application was a dual burner ignition, check the

Q520 subbase for a jumper between terminals 6 to 7,
discard the jumper and move the main valve connec­tion (terminal 7) to terminal 6.

Replacing GP201 or GP301 devices:

— High Fire (or Purge Rate) Switch may be connected to

terminal D.

— Identify, remove, and connect to terminal M.

Replacing GP101 devices:

— Check wiring subbase. If D is jumpered to 8, remove

the jumper.

Replacing R4140 programmers on Carlin 1050 and 1150
burners:

— Remove jumper from 6 to 7.
— Remove jumper from L2 to 12 and wire nut the wires

together. Note: There will be no wire on terminal 12.

R4140M replacements:
Check terminal 13 of the Q520 wiring subbase.

— If nothing is on 13, install the new R7140M1007.
— If 13 is jumpered to 8, remove the jumper and install

R7140M1007.

— If 13 goes somewhere (assume a low fire switch

because the system has a damper motor), remove J1
and J2 from the back of the R7140M1007.

NOTE: J1 and J2 provide an input for the R7140M when

the system does not have a spring return damper
with a low fire switch.

Leaving J1 and J2 in place with either 13 jump­ered to 8 or with the low fire switch will cause the
blower motor to come on after the R7140M is
installed and power is supplied to the system.

Generally, the following table will apply to select
the R7140M1007 model and the status of jumpers
J1 and J2.

7 66-1153—03

R7140G,L,M BURNER CONTROL MODULES

WARNING

CHASSIS
RETAINING
SCREW

SPRING
CONNECTORS

KNIFE-BLADE
CONTACTS (20)

WIRING
SUBBASE

PIVOT PIN (2)

HINGE
BRACKET (2)

PROGRAMMER
CHASSIS

M22605

Table 6. J1/J2 Jumper Configuration for R4140M/PM720M.

Model Purge Timer Leave J1 & J2 Remove J1 and J2

R4140M1004/M1012 A1039 X

R4140M1020/M1038 A1047 X

R4140M1046/M1053 A1062 X

R4140M1079 (GP101) A1062 X

R4140M1103/M1111 A1039 X

R4140M1145/M1152 A1047 X

R4140M1160/M1178 A1062 X

R4140M1186 A1047 X

R4140M1194 ST7800A1062

BC7000L1000 w/PM720M2002 ST7800A1062 X

BC7000L1000 w/PM720M2036 * X

* Check terminal 8 and 15.

If jumpered, ST7800A1031 (7 second purge).
If not jumpered, ST7800A1039 (30 second purge).

Mounting R7140 Relay Module

Installing the Programmer (Fig. 3)

Electrical Shock Hazard.
Can cause severe injury, death or property
damage.

Disconnect power before installation to prevent
electrical shock. More than one disconnect may be
involved.

1. Open the master switch.

2. Make sure no subbase wiring is projecting out beyond

the terminal blocks. Tuck in wiring against the back of
the subbase so it does not interfere with the contacts.

3. Grasp the programmer chassis and engage the chassis
hinge brackets with the pivot pins at the bottom of the
subbase.

4. Swing the chassis inward until the spring connectors
engage the knifeblade contacts. Push in until the
contacts are fully engaged.

5. Tighten the chassis retaining screw securely.

6. Close the master switch to restore power.

Removing the Programmer

1. Open the master switch.

2. Loosen the chassis retaining screw.

3. Pull outward on the top of the chassis.

4. Disengage the chassis hinge brackets from the subbase

pivot pins.

Fig. 3. Mounting the programmer on the subbase.

66-1153—03 8

R7140G,L,M BURNER CONTROL MODULES

R7140G

POWER

OPERATING
CONTROLS
AND
INTERLOCKS

BURNER

FLAME
SIGNAL

FIRING
RATE
MOTOR

INITIATE
(INITIAL
POWERUP
ONLY)

POWER

STANDBY

PREPURGE
HOLD
DRIVE TO
LOW FIRE

POWER

PILOT

FLAME

MAIN

POWER

PFEP
10 SEC.
(4 SEC. IF
JR1

CLIPPED

PILOT

FLAME

MAIN

POWER

MFEP

PILOT

FLAME

MAIN

RUN

POWER

POSTPURGE

POWER

STANDBY

00 00 10 25 00 1520

MOTOR ACTION

BURNER/BLOWER MOTOR

IGN.

15 SEC. INTERRUPTED PILOT VALVE

LIMITS AND BURNER CONTROLLER CLOSED

RUNNING INTERLOCKS CLOSED

PII CLOSED

LOW FIRE SW.

SAFE START CHECK

FLAME PROVING

10 SEC. IGN./PILOT

5

18

8

5 SEC.

6

TO

3TO

16

TO

8

13

TO

10 11

TO

10 11

TO

M23319

INTERLOCK. CHECK

14 11

TO

14 11

TO

4

16

L1

MAIN VALVE

7

TIMED
PREPURGE

POWER

FLAME

MAIN

PILOT

ALARM

POWER

FLAME

MAIN

PILOT

ALARMALARMALARMALARM

00

IC

SSC

LED
DISPLAY

R7140G SWITCHING

1

TERMINAL 6 HAS THE FOLLOWING OPTIONS:

AS RECEIVED - INTERMITTENT PILOT
JR2 CLIPPED - 15 SECOND MAIN FLAME ESTABLISHING PERIOD (INTERRUPTED PILOT)
JR2 CLIPPED PLUS TERMINALS 8 - 15 JUMPERED - 30 SECOND MAIN FLAME ESTABLISHING PERIOD (INTERRUPTED PILOT)

1

16

2

2

PII MEANS PRE-IGNITION INTERLOCK.

3

FOR R7140G1000:

L1 TO 4
4 TO 3

3

3

Fig. 4. Operating sequence, R7140G1000/R7140G2008.

9 66-1153—03

R7140G,L,M BURNER CONTROL MODULES

CONFIGURATION
JUMPERS

MICROCOMPUTER

RESET
PUSHBUTTON

RUN/TEST
SWITCH

STATUS LEDs

PLUG-IN PURGE
TIMER CARD

SAFETY RELAY
CIRCUIT

POWER SUPPLY

KEYBOARD
DISPLAY MODULE

HIGH FIRE

COMMON

MODULATE

LOW FIRE

PLUG-IN
FLAME
AMPLIFIER

RELAY
DRIVE
CIRCUIT

CONTROL
POWER

TEST
JACK

REMOTE
RESET

DDL

DDL
COMMUNICATIONS

INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS

IGNITION

PILOT

PILOT/V2

MAIN VALVE

1K

9K

RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS

LIMITS

CONTROLLER

RUNNING/
LOCKOUT
INTERLOCK

PRE-IGNITION
INTERLOCK

1K1 2K1 5K1

8K1

8K2

9K1

9K2

120 Vac,
50/60 Hz

FLAME SIGNAL

TEST

LOW FIRE SWITCH

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

RS485

1

2

3

L1
(HOT) L2

L1

16

3

4K1

7K1

2K2

18

5

6

7

13

8K

7K

6K

5K

4K

3K

2K

F

G

17

1

BLOWER

6K1

8

ALARM

3K1

9

10

11

12

14

M23320

1

L2

FIELD WIRING
INTERNAL WIRING

R1

4

R1

Fig. 5. Internal block diagram of the R7140G1000. (See Fig. 8 for detailed wiring.)

66-1153—03 10

R7140G,L,M BURNER CONTROL MODULES

L1
(HOT)

L2

8K1

8K2

9K2

1

120 Vac,
50/60 Hz

POWER SUPPLY

4

1K1 2K1 5K1

3

HIGH FIRE

COMMON

MODULATE

9K1

LOW FIRE

PLUG-IN PURGE
TIMER CARD

FLAME SIGNAL

TEST

4K1

7K1

2K2

12

13

15

14

TEST
JACK

F

PLUG-IN
FLAME
AMPLIFIER

CONTROL
POWER

18

5

6

7

8

9

INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS

FIELD WIRING
INTERNAL WIRING

G

17

IGNITION

PILOT

PILOT/V2

MAIN VALVE

BLOWER

ALARM

L2

L1

CONFIGURATION
JUMPERS

RUN/TEST
SWITCH

MICROCOMPUTER

PRE-IGNITION
INTERLOCK

RUNNING/
LOCKOUT

LIMITS

CONTROLLER

6K1

3K1

INTERLOCK

16

LOW FIRE SWITCH

13

1

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

M23321

Fig. 6. Internal block diagram of the R7140G2008. (See Fig. 7 for detailed wiring.)

11 66-1153—03