Honeywell R7140G, R7140L, R7140M Installation Instructions Manual

R7140G,L,M
Burner Control Modules

FEATURES

• Device status available to ModBus™ through S7810M

• Safety features:

• Access for external electrical voltage checks.

• Application flexibility.

• 0.8 or 3.0 second Flame Failure Response Time

• Dependable, long-term operation provided by

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.

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.

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

• Five function Run/Test Switch.

• Interchangeable plug-in flame amplifiers.

• Nonvolatile memory; R7140 retains history files and

• Report generation (optional).

NOTE: Check Service Notes on page 7 and Static Checkout

• Burner controller data (optional):

• Status of configuration jumpers.

• Status of Run/Test Switch.

INSTALLATION INSTRUCTIONS

card or S7800A1001 Series 5 Keyboard Display.

— 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.

(FFRT), depending on amplifier selected.

microcomputer technology.

sequencing status after loss of power and can be
viewed using the Keyboard Display Module
S7800A1001 (sold separately).

on page 25 prior to installation of R7140.

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

66-1153-2

R7140G,L,M BURNER CONTROL MODULES

Maximum Total Connected Load: 2000VA.

RUN/TEST SWITCH

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, CUL Component

SEQUENCE
STATUS
LEDs

RESET
PUSHBUTTON

FLAME
SIMULATOR INPUT

AMPLIFIER

FLAME CURRENT
TEST JACKS

PLUG-IN

PURGE

CARD

DUST

COVER

RELAY

MODULE

FLAME

M7552B

Recognized.

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

Federal Communications Commission: Part 15,

Class B—Emissions.

Mounting:

Q520A 20-terminal Subbase for panel mounting.

SPECIFICATIONS

Required Components:

Plug-in Flame Signal Amplifier. See Table 1.

Electrical Ratings (See Table 1):

Plug-in Purge Timer Cards. See Table 2.

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

(±10%).

Power Dissipation in the Run Mode: 10W maximum.

Table 1. Flame Detection Systems.

Plug-in Flame Signal Amplifiers Applicable Flame Detectors

Flame

Failure

Response

Type Color Self-Checking Model

Rectification Green No

No

Dynamic Ampli-Check

®

Dynamic Ampli-Check®R7847B

R7847A

R7847A

R7847B

Time (sec)

e

0.8 or 3 Gas Rectifying Flame

e

3 Gas, oil,

c,e

0.8 or 3 Gas Rectifying Flame

c,e

3 Gas, oil,

a

Fuel Type Models

coal

coal

Infrared Red No R7848A 3 Gas, oil,

coal

Dynamic Ampli-Check

®

R7848B

c

3 Gas, oil,

coal

Rod Holders

f

Ultraviolet (Purple

®

Peeper

)

Rod Holders

Ultraviolet (Purple
Peeper®)

Infrared (Lead
Sulfide)

Infrared (Lead
Sulfide)

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

C7012A,C.

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

C7012A,C

C7015

C7015

66-1153—2 2

R7140G,L,M BURNER CONTROL MODULES

Table 1. Flame Detection Systems. (Continued)

Plug-in Flame Signal Amplifiers Applicable Flame Detectors

Flame

Failure

Response

Type Color Self-Checking Model

Time (sec)

Ultraviolet Purple No R7849A 0.8 or 3 Gas, oil Ultraviolet

Dynamic
Ampli-Check

Dynamic
Self-Check

Blue Dynamic

Self-Check

®

R7849B

R7861A

R7886A

c

0.8 or 3 Gas, oil Ultraviolet

b

0.8 or 3 Gas, oil,

b

3 Gas, oil,

a

Fuel Type Models

(Minipeeper)

(Minipeeper)

C7027, C7035, C7044

C7027, C7035, C7044

Ultraviolet C7061

coal

C7076

coal

Ultraviolet
(Adjustable
Sensitivity)

Optical White Dynamic

Ampli-Check

®

Dynamic
Self-Check

a

Flame Failure Response Time (FFRT) depends on selection of amplifier.

b

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

R7851B 0.8 or 3 Gas, oil,

coal

b

R7851C

3 Gas, oil,

coal

Optical (UV, IR,
Visible Light)

C7927, C7935, C7915,
C7962

Optical (UV only) C7961

operation and shuts down burner if detection system fails.

c

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

d

Use C7027, C7035 and C7044 Flame Detectors only on burners that cycle on-off at least once every 24 hours. Use C7961 Flame
Detector with R7851C Amplifier, 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 24 hours or longer.

e

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

f

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

d

d

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:

Q7700A1015 Network Interface Unit, 120 Vac, 50/60 Hz

applications, external modem required.

Q7700B1004 Network Interface Unit with universal 100 to

250 Vac, 50/60 Hz external power supply, external

modem required.
QS7800A1001 ControlBus Module, standard.
QS7800B1000 ControlBus Module, multidrop.
QS7850A1001 ControlBus Module, General Purpose

Interface.
ZM7850A1006 Combustion System Manager

®

software.

S7810A1009 Data ControlBus Module™ (if no KDM is

used).
S7810B1007 Data ControlBus Module™, Multi-Drop

Switch Module.
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.
204718A Keyboard Display Module Cover, NEMA 4, clear.
204718B Keyboard Display Module Cover, NEMA 1, clear.
204718C 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.

3 66-1153—2

R7140G,L,M BURNER CONTROL MODULES

BURNER CONTROL

5-3/4 (146)

1-1/4

(32)

5

(127)

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).

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.

66-1153—2 4

R7140G,L,M BURNER CONTROL MODULES

Table 4. Terminal Ratings.

Terminal Typical Load Maximum Rating at 120 Vac, 60 Hz

5 or 6 Ignition

7 Main Fuel Valve(s) (solenoid/

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.

Transformer/Pilot
Valve/First Stage Fuel Valve

motorized/diaphragm) and
Vent Valve, if required

4.5A ignition and 50 VA pilot duty, or

2.5A ignition and 75 VA pilot duty.

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.

Table 5. Sequence Timing for Normal Operation.

Flame

Establishing

Period

sec.

10, 15
sec.a or

intermittent.

sec.

intermittent

a

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.

WARNING

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.

WARNING

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.

5 66-1153—2

R7140G,L,M BURNER CONTROL MODULES

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 C7015, C7927,
C7935, 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 B 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 B
limits for radio noise for digital apparatus set out in
the Radio Interference Regulations of the Canadian
Department of Communications.

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.

Mounting Wiring Subbase

1. Mount the subbase in any position except horizontally

with the quadfurcated contacts pointing down. The
standard vertical position is recommended. Any other
position decreases the maximum ambient temperature
rating.

2. Select a location on a wall, burner, or electrical panel.

The Q520A can be mounted directly in the control
cabinet. Be sure to allow adequate clearance for
servicing, installation, access or removal of the R7140,
Expanded Annunciator, Keyboard Display Module,
flame amplifier, flame amplifier signal voltage probes,
Run/Test Switch, electrical signal voltage probes and
electrical field connections.

3. For surface mounting, use the back of the subbase as a

template to mark the four screw locations. Drill the pilot
holes.

4. Securely mount the subbase using four no. 6 screws.

Wiring Subbase

WARNING

Electrical Shock Hazard.
Can cause serious injury, death or equipment
damage.

Disconnect the power supply before beginning
installation to prevent electrical shock, equipment
and control damage. More than one power supply
disconnect may be required.

1. For proper subbase wiring, internal drawings, and

sequence check charts, refer to Fig. 5, 6, 7, 8, 9 and 11.

2. Disconnect the power supply from the main disconnect

before beginning installation to prevent electrical shock
and equipment damage. More than one disconnect may
be required.

3. All wiring must comply with all applicable electrical

codes, ordinances and regulations. Wiring, where
required, must comply with NEC, Class 1 (Line Voltage)
wiring.
a. Follow recommended wire size and type.
b. Follow recommended grounding practices.

4. Recommended wire routing of leadwires:

a. Do not run high voltage ignition transformer wires in

the same conduit with the flame detector.

b. Do not route flame detector leadwires in conduit

with line voltage circuits.

c. Enclose flame detector leadwires without armor

cable in metal cable or conduit.

d. Follow directions in flame detector Instructions.

5. Maximum wire lengths follow:

a. R7140 leadwires—The maximum length of leadwire

is 300 feet to terminal inputs (Control, Pre-Ignition
Interlock, Running/Lockout Interlock, High Fire
Switch and Low Fire Switch).

b. Flame Detector leadwires—The maximum flame

sensor leadwire length is limited by the flame signal
strength.

c. Remote Reset leadwires—The maximum length of

wire is 1000 feet to a Remote Reset push button.

6. Make sure loads do not exceed the terminal ratings.

Refer to the label on the R7140 or to the ratings in Table
3 and 4.

66-1153—2 6

R7140G,L,M BURNER CONTROL MODULES

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:

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.

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.

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).

7 66-1153—2

R7140G,L,M BURNER CONTROL MODULES

Mounting R7140 Relay Module

Installing the Programmer (Fig. 3)

WARNING

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.

PREPURGE
HOLD
DRIVE TO
LOW FIRE

BURNER/BLOWER MOTOR

15 SEC. INTERRUPTED PILOT VALVE

RUNNING INTERLOCKS CLOSED

TO

LED
DISPLAY

BURNER

OPERATING
CONTROLS
AND
INTERLOCKS

FLAME
SIGNAL

FIRING
RATE
MOTOR

INITIATE
(INITIAL
POWERUP
ONLY)

POWER

INTERLOCK. CHECK

STANDBY

00 00 10 25 00 1520

TIMED
PREPURGE

POWER

POWER

PILOT

FLAME

MAIN

LIMITS AND BURNER CONTROLLER CLOSED

PII CLOSED

SAFE START CHECK

R7140G SWITCHING

10 11

MOTOR ACTION

POWER

PILOT

FLAME

MAIN

18

2

LOW FIRE SW.

14 11

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.

KNIFE-BLADE

WIRING
SUBBASE

Fig. 3. Mounting the programmer on the subbase.

R7140G

PFEP
10 SEC.

00

(4 SEC. IF
JR1

CLIPPED

POWER

PILOT

FLAME

MAIN

IGN.

5 SEC.

10 SEC. IGN./PILOT

16

4

TO

TO

CONTACTS (20)

PIVOT PIN (2)

MFEP

POWER

PILOT

FLAME

MAIN

ALARMALARMALARMALARM

5

6

MAIN VALVE

TO

L1

16

13

8

TO

FLAME PROVING

RUN

POWER

PILOT

FLAME

MAIN

ALARM

8

16

3

3TO

3

10 11

TO

POSTPURGE

1

7

14 11

SPRING
CONNECTORS

HINGE
BRACKET (2)

POWER

TO

STANDBY

POWER

IC

SSC

CHASSIS
RETAINING
SCREW

PROGRAMMER
CHASSIS

M22605

TERMINAL 6 HAS THE FOLLOWING OPTIONS:

1

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)

PII MEANS PRE-IGNITION INTERLOCK.

2

FOR R7140G1000:

3

L1 TO 4
4 TO 3

Fig. 4. Operating sequence, R7140G1000/R7140G2008.

66-1153—2 8

M23319

L1

RESET
PUSHBUTTON

RUN/TEST
SWITCH

CONFIGURATION
JUMPERS

MICROCOMPUTER

RELAY
DRIVE
CIRCUIT

L1
(HOT) L2

1

120 Vac,
50/60 Hz

2K

3K

4K

5K

6K

7K

8K

9K

PLUG-IN PURGE
TIMER CARD

FLAME SIGNAL

PLUG-IN
FLAME
AMPLIFIER

TEST

R7140G,L,M BURNER CONTROL MODULES

TEST
JACK

F

G

17

RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS

SAFETY RELAY

6K1

3K1

RS485

2

CIRCUIT

PRE-IGNITION
INTERLOCK

4

LOW FIRE SWITCH

13

REMOTE

3

RESET

R1

STATUS LEDs

LIMITS

CONTROLLER

KEYBOARD
DISPLAY MODULE

DDL

DDL
COMMUNICATIONS

1

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

1

8K1

8K2

9K2

1K

RUNNING/
LOCKOUT
INTERLOCK

16

HIGH FIRE

COMMON

MODULATE

LOW FIRE

POWER SUPPLY

9K1

1K1 2K1 5K1

3

10

11

12

14

CONTROL
POWER

R1

IGNITION

18

4K1

7K1

2K2

INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS

FIELD WIRING
INTERNAL WIRING

5

6

7

8

9

PILOT

PILOT/V2

MAIN VALVE

BLOWER

ALARM

L2

M23320

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

9 66-1153—2

R7140G,L,M BURNER CONTROL MODULES

L1

CONFIGURATION
JUMPERS

RUN/TEST
SWITCH

CONTROLLER

LIMITS

16

13

6K1

3K1

MICROCOMPUTER

PRE-IGNITION
INTERLOCK

RUNNING/
LOCKOUT
INTERLOCK

LOW FIRE SWITCH

8K1

8K2

9K2

L1
(HOT)

1

120 Vac,
50/60 Hz

POWER SUPPLY

4

1K1 2K1 5K1

3

HIGH FIRE

COMMON

MODULATE

9K1

LOW FIRE

L2

PLUG-IN PURGE
TIMER CARD

FLAME SIGNAL

4K1

7K1

2K2

12

13

15

14

TEST

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

1

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

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

66-1153—2 10

M23321