Honeywell R4140G User Manual

60-2337-3

Flame Safeguard Programming Controls

APPLICATION

The R4140G Flame Safeguard Programmers provide
flameout protection plus automatic sequencing of the burner
motor (blower), firing rate motor, ignition, pilot valve, and main
fuel valve(s) for commercial and industrial burners using gas,
oil, coal, or a combination of fuels.

FEATURES

• Approvals: Underwriters Laboratories Inc. listed or
component recognized, Canadian Standards
Association certified, and Factory Mutual approved for
automatic fired burners.

• The R4140 directly replaces the R4150 for most
applications and mounts on the same Q520A Wiring
Subbase.

• Low-high-low purge programmers.

• Field selectable main burner flame-establishing
period.

• Early spark termination (five-second ignition and five­second pilot only) available on some models.

• Plug-in, solid state, flame signal amplifiers are color­coded and interchangeable to allow the use of any
type of flame detector-flame rod, photocell, infrared
detector, or ultraviolet detector.

• Amplifier capability includes three standard models,
three Dynamic Self-Check models, and one Dynamic
Ampli-Check® model.

R4140G

PRODUCT DATA

• R7247C or R7476A Dynamic Self-Check Amplifier,
when used with an ultraviolet flame detector with a
self-checking shutter (R7247C with a C7012E or F;
R7476A with a C7076), tests all electronic components
in the flame detection system (amplifier and detector)
60 to 240 times a minute during burner operation and
shuts down the burner if the detection system fails.

• R7247B Dynamic Self-Check Amplifier, when used with
a rectifying flame rod (which is considered fail-safe),
or R7248B Dynamic Ampli-Check Amplifier, when used
with a C7015A Infrared (lead sulfide) Flame Detector,
tests the flame signal amplifier at least 150 times a
minute during burner operation and shuts down the
burner if the amplifier fails.

• All models feature capability of proving low fire position
of the firing rate motor before starting ignition trials.

• Provisions for connecting preignition or start
interlocks (depending on model) to prove the proper
conditions for startup, and for a combustion airflow
switch to prove airflow throughout the operating cycle.

• All models have 4-wire firing rate switching circuitry—
firing rate can be modulated while the burner is firing,
and the firing rate motor can be driven to both low and
high fire positions during prepurge.

• Safe start check at startup and during prepurge. If
flame relay 2K is holding in at startup, the programmer
cannot be started. If a flame (or a condition simulating
a flame) is detected during prepurge, ignition trials
cannot be started and the programmer recycles.

• Safety shutdown occurs on failure to ignite the pilot or
main burner, on loss of flame during the Run period,
or if the flame detection system fails (if a self-checking
system is used).

• All relays are visible, labeled, and easily accessible.

• Alarm terminal is available to operate an external, line
voltage alarm on safety shutdown.

Contents

Application .......................................................................... 1

Features .............................................................................. 1

Specifications ...................................................................... 2

Ordering Information ........................................................... 2

Operation ............................................................................ 6

Wiring .................................................................................. 23

Copyright © 1996 Honeywell Inc. • All Rights Reserved

X-XX UL

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

SPECIFICATIONS

Interlock Circuits:

Start Interlocks (R4140G1049, G1056, G1064, G1114,

G1122, G1148 and G1171)—System controls must be

IMPORTANT

The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit may not match the listed specifications
exactly. Also, this product is tested and calibrated
under closely controlled conditions, and some minor
differences in performance can be expected if those
conditions are changed.

in proper positions or programmer will not start.

Preignition Interlocks (R4140G1007, G1015, and

G1106)—Must be closed to start programmer. Prevent
ignition trials if interlocks open during prepurge; timer
recycles the programmer and system restarts if
condition is self-correcting.

Running Interlocks (all models)—Must be closed (airflow

must be proven, fuel pressure must not be too low or
too high) within 9.5 seconds after startup or ignition

MODELS:

R4140G Flame Safeguard Programming Controls—Flame
Safeguard protection and sequencing controls for use on gas,
oil, coal, or combination burners. See Table 1 for models
available.

trials cannot be started. Running interlocks must remain
closed through the Run period or the automatic fuel
valves de-energize, the burner flame(s) goes out, and
the timer recycles the programmer.

Low Fire Interlock (all models)—Timer stops at 52 seconds

until low fire proving switch closes, indicating damper is
closed prior to ignition.

Table 1. Models Available.

Flame-Establishing

Pilot

Period (sec)

Main Burner

c

(Field Selectable)

Postpurge

c

(sec)

Interlock

Circuits

Airflow

Switch) and

Low Fire

Firing Rate

Switching

Circuit

4-wire

common,

Timer

a

Cycle

(sec)

Prepurge

(sec)

Early Spark

Termination

b

Model

R4140G1007 Yes 120 60 No 10 10 or 30 16 Preignition,

R4140G1015 No Running

R4140G1106 No 120 60 No 10 10 or 15 16 (including

R4140G1049 No 120 60 Yes 10 10 or 30 16 Start, high fire,

R4140G1056 Yes 120 60 Yes 10 10 or intermittent 16 Running low-fire,

R4140G1064 No 120 60 Yes 10 10 or intermittent 16 (including modulate)

R4140G1114 No 180 70 Yes 10 10, 30, or 60 25 Airflow

R4140G1122 No 180 70 Yes 10 10, 30 or 60 25 Switch) and

R4140G1148 No 120 60 Yes 10 10 or 15 16 Low Fire

R4140G1171 No 180 70 Yes 10 10 or 15 25

a

202050C Cover with reset button; heavy duty, metal cover for outside panel mounting.

b

Early spark termination available on terminal 18 (5 second ignition and 5 second pilot only).

c

If used for direct spark ignition (oil or gas), the flame-establishing period is 10 seconds.

With

Cover

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number or specify order number. Order separately:

1. Flame detection system (amplifier and matching flame detector). See Table 4.

2. Q520A1089 or Q520A1121 Wiring Subbase.

3. Accessories, if desired.

If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:

1. Your local Home and Building Control Sales Office (check white pages of your phone directory).

2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

60-2337—3

2

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

Safety Features:

Safe Start Check—For the presence of a flame (or a

condition simulating a flame) provided at startup and
during prepurge. If the flame relay 2K is pulled in at
startup, 2K2 is open and the programmer cannot be
started. If the flame relay 2K pulls in during prepurge
(before 57.5 seconds), 2K2 opens, relay 1K drops out,
and ignition trials cannot be started. Instead, the timer
completes its revolution and stops at the standby position
(zero seconds). If the flame relay 2K drops out by the end
of the cycle, the programmer restarts the system.

Safety Shutdown—Ignition transformer and all automatic

fuel valves de-energize. The lockout switch trips and
locks out the programmer. If used, the external alarm is
energized. The timer completes its revolution and locks
up at the stand-by position (zero seconds). The lockout
switch must be manually reset to restart the system.

Safety Shutdown occurs on:

• Failure to ignite the pilot (or first stage burner if using
direct spark ignition).

• Failure to light the main burner (unless monitoring
an intermittent pilot).

• Loss of flame during the Run period.

• Failure in the flame detection system (if a self-

checking system is used, see Table 4).

Flame Failure Response Time—2 to 4 seconds.
Lockout Switch Timing—30 seconds (nominal).

Electrical Ratings:

Voltage and Frequency: 120 Vac (102V minimum to 132V

maximum), 50/60 Hz.
R4140G1114: 240 Vac, 60 Hz.
R4140G1122: 208 Vac, 60 Hz.

NOTE: Use of a 50 Hz power supply lengthens the

sequence timings by a factor of 1.2.

Power Consumption (With No Loads Connected to Output

Terminals): 13W maximum.

Maximum Total Connected Load: 2000 VA.

Terminal Ratings:

See Table 2.

Table 2. Terminal Ratings.

Maximum Rating at

Terminal Typical Load

5 or 6 Ignition

Transformer/Pilot

120 Vac, 60 Hz

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

8 Burner Motor

(blower)

9.8A full load, 58.8A locked rotor
(inrush)

9 120V Alarm 75 VA pilot duty

10, 11, 12,

and 14

Firing Rate

(damper) Motor

50 VA pilot duty

Contacts

18

(if available)

Ignition

Transformer

4.5A ignition

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

rating.

EXAMPLE: Pilot duty rating = 50 VA.

At 120V, running current is:

50

120

= 0.42A

.

Maximum allowable inrush is ten times

0.42A = 4.2A.

Interlock Ratings:

See Table 3.

Table 3. Interlock Ratings.

Requirements must be abIe to

Interlocks

Limits, Burner Controller,
and Running Interlocks

carry and break current to:

Ignition transformer, pilot valve,
and main fuel valve(s).

(including airflow switch)
Start or Preignition

Programmer relay 1K (5W max).

Interlocks

Ambient Operating Temperature Ratings:

Minimum: Minus 40°F (minus 40°C).
Maximum:

Programmer Mounting Position

Standard Vertical (With Handle Up) Any Other

+150°F (+66°C) +135°F (+57°C)

Storage Temperature Ratings:

Minus 60°F to plus 150°F (minus 51°C to plus 66°C).

Mounting:

3-sided Q520A1089 Wiring Subbase, or 4-sided Q520A1121
Wiring Subbase; both have 20 knife-blade contacts (subbase
ordered separately).

Dimensions:

See Fig. 1 and 2.

Weight (Without Plug-in Flame Signal Amplifier and
202050C Cover):

4 lb, 12 oz (2.15 kg).

Flame Detection System (Ordered Separately):

Plug-in Flame Signal Amplifier and matching Flame Detector;
see Table 4.

Approvals:

Underwriters Laboratories Inc. Listed Section of Primary

Safety Control (120V Models With Covers): File No.
MP268; Guide No. MCCZ.

Underwriters Laboratories Inc. Component Recognized

(120V Models Without Covers): File No. MP268; Guide
No. MCCZ2.

Canadian Standards Association Certified: File No.

LR1620.

Factory Mutual Approved: Report No. 24180.

3

60-2337—3

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

2-3/8 (60)

7/8 (22) DIAMETER KNOCKOUT (2)

13/64 (5) DIAMETER (4)
(FOR MOUNTING ON
4 X 4 [102 X 102] JUNCTION BOX)

35

4

31/32

(25) (2)

1-27/32

(47)

9

10

11

6-5/32

(156)

15/16

(24) (2)

3-3/8

(86)

1-3/4
(45)

7-3/16 (183)

2-11/32 (60)

5/8 (16) (4)

L1

L2

12

13

7/8 (22) DIAMETER
KNOCKOUT (2)

18

17

16

15

14F

3-3/8 (86)

7 -1/16 (179)

3/8 (10) (4)

6

7

8

G

1

202050C COVER

202050C COVER

LOCKOUT SWITCH
RESET BUTTON

7-3/16 (183)

47/64

(19)

35/64

(14)

1-51/64

(46)

5-5/8
(143)

2-5/64

5-7/8
(149)

(53)

6-1/2
(165)

6

(152)

2-11/32 (60)

1-3/4

(45)

3/4

(19)

1-13/32 (36) 1-13/32 (36)

7/8 (22) DIAMETER KNOCKOUT (4)

1 OPEN ON 3-SIDED Q520A1089.

Fig. 1. Mounting dimensions of the Q520A

wiring subbase in in. (mm).

31/32

(25)

M6776

(ON Q520A1089 3-SIDED WIRING SUBBASE)

M6777

Fig. 2. Mounting dimensions of the R4140 Programmer

on the Q520A wiring subbase in in. (mm).

60-2337—3

4

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

Accessories:

W136A Test Meter (includes 117053 Meter Connector

Plug); has SPL position with damping for testing self-

checking flame detection systems.
117053 Meter Connector Plug (for older W136A models).
123514A Flame Simulator (for use with R7247A

Rectification Amplifiers).
123514B Flame Simulator (for use with R7249A Ultraviolet

Amplifiers).
139695C (Series 1 and 2) Cover with reset button; heavy

duty, metal cover for outside panel mounting.
202050C (Series 3) Cover with reset button; heavy duty,

metal cover for outside panel mounting.
118760B (Series 1 and 2) Remote Reset Cover; heavy

duty, metal cover with remote reset assembly; 120V,

60 Hz solenoid.
202051B (Series 3) Remote Reset Cover; heavy duty,

metal cover with remote reset assembly; 120V, 60 Hz

solenoid.
R1061012 Ignition Cable; for ignition installations in a high

temperature environment; rated at 350°F (177°C) for

R1298020 Cable; for flame detector (F lead-wire)

installations in a high temperature environment; rated
up to 400°F (204°C) for continuous duty; tested for
operation up to 600V and breakdown up to 7500V.

R1239001 High Tension Ignition Cable; for ignition

installations in a contaminating environment; very
resistant to severe conditions of oil, heat, and corona,
and tested to withstand high voltages up to
25,000V rms in a salt bath for one minute without
breakdown; rated at 200°F (93°C) for continuous duty,
and up to 350°F (197°C) for intermittent use.

Q624A Solid State Spark Generator; prevents detection of

ignition spark when properly applied with flame
detection systems using C7027, C7035, or C7044
Minipeeper Ultraviolet Flame Detectors. For use only
with gas pilots.

FSP5004 Tester; provides a quick operational check of

most R4140 Flame Safeguard Programming Controls.

Q520E1002 Service Tool; allows any of the programmer

terminals to be monitored while the programmer is
operating.

continuous duty, and up to 500°F (260°C) for

intermittent use; tested to 25,000V.

Table 4. Flame Detection Systems

NOTE: Neither the R414G1114 or the R4140G1122 can be used with the C7012E or F Purple Peeper Ultraviolet Flame

Detector and with the R7247C Dynamic Self-Check Amplifier.

Plug-In Flame Signal Amplifiers Applicable Flame Detectors

Type Color

Checking Model

Rectification Green No R7247A 2 to 4 sec Gas Rectifying

Self-

Flame Failure

Response Time Fuel Type Models

Holdersa: C7004, C7007, C7011.

Flame Rods

Complete assemblies: C7005,

C7008, C7009, Q179.

R7247A,
R7247B

Dynamic

R7147B

Self-

Check

R7247C

Infrared Red No R7248A 2 to 4 sec Gas,

Dynamic

R7248B

Ampli-

Check®

Ultraviolet Purple No R7249A 2 to 4 sec Gas,

Blue Dynamic

R7476A

Self-

Check

a

Order flame rod separately; see Instructions for the holder.

b

Circuitry tests the flame signal amplifier at least 150 times a minute during burner operation and shuts down the burner if the
amplifier fails.

c

Use only Honeywell part no. 38316 Photocell.

d

Circuitry tests all electronic components in the flame detection system (amplifier and detector) 60 to 240 times a minute during

2 to 4 sec Oil Rectifying

b

Gas,

Oil,

Coal

b

2 to 4 sec Gas Rectifying

d

2 to 4 sec Gas,

Oil,

Coal

Oil,

Coal

b

2 to 4 sec Gas,

Oil,

Coal

Oil

d

2 to 4 sec Gas,

Oil,

Coal

Photocells

Ultraviolet

(Purple

Peeper)

Flame Rods

Ultraviolet

(Purple

Peeper)
Infrared

(Lead

Sulfide)
Infrared

(Lead

Sulfide)

Ultraviolet

(Minipeeper)

Ultraviolet

(Adjustable

Sensitivity)

C7003, C7010, C7013, C7014.

c

C7012A or C.

Holdersa: C7004, C7007, C7011.
Complete Assemblies: C7005,

C7008, C7009, Q179.

C7012E or F

C7015.

C7015.

C7027, C7035, C7044.

C7076.

burner operation and shuts down the burner if the detection system fails.

5

60-2337—3

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

OPERATION

Models with Preignition Interlocks

Fig. 3 shows all contacts in the standby position (zero
seconds). The opening and closing times are shown adjacent

to each timer contact. Refer to Fig. 4 and the Step-by-Step
Operation section.

R4140G1007/G1015 SCHEMATIC
(WITH/WITHOUT HEAVY DUTY COVER)

INTERNAL

O—OPENING TIME
C—CLOSING TIME
LS DENOTES LOCKOUT SWITCH; HTR DENOTES HEATER

L1

1

EXTERNAL

2

3

G

4

F

3 9 13 5 8 12 10

5

6

7

8

9

10

11

12

13

FLAME
DETECTOR

BURNER

LIMITS

CONTROLLER

1K1 1K2

TIP JACK

M7A
C-57.5 O-111

4

PREIGNITION
INTERLOCKS

17

16 3 5

14

15

16

17

18

19

M1B
C-4
O-120

M3A
O-52 C-66

8

LOW FIRE
SWITCH

LS1

NORM

13

TIMER SWITCH

20

21

22

23

M10B O-4 C-45

24

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION

1

AS REQUIRED.

2

TERMINAL 17 IS USED ONLY TO DRIVE THE SHUTTER ON A C7012E OR F
OR A C7076A ULTRAVIOLET FLAME DETECTOR WITH SELF-CHECKING
FEATURE. POWER TO DRIVE THE SHUTTER IS APPLIED TO TERMINAL 17
FROM TERMINAL 8 THROUGH A SOLID STATE SWITCH IN THE R7247C
OR R7476A DYNAMIC SELF-CHECK AMPLIFIER. REFER TO SAMPLE BLOCK
DIAGRAM OF FIELD WIRING.

M10A C-4 O-41

M8A C-100 O-112

Fig. 3. Simplified schematic diagram of R4140G1015 Programmer.

120V, 60 HZ
POWER SUPPLY

L1
(HOT)

PLUG-IN AMPLIFIER

7

17

2K

2

M7B
O-9.5 C-116

RUNNING
INTERLOCKS
(INCLUDING
AIRFLOW SWITCH)

TEST

L2

M11B
C-15 O-70

2K3

1K3

M5B
O-104
C-108

M8B O-100 C-116

3

10 SECOND MAIN BURNER FLAME-ESTABLISHING PERIOD.

4

30 SECOND MAIN BURNER FLAME-ESTABLISHING PERIOD.

5

FOR DIRECT SPARK IGNITION (GAS OR OIL,) A JUMPER IS INSTALLED
BETWEEN TERMINALS 6 AND 7. REFER TO SAMPLE BLOCK DIAGRAM
OF FIELD WIRING FOR HOOKUP.

6

USE A SERIES 90 MODULATING MOTOR IF MODULATION IS REQUIRED.

1

MASTER
SWITCH

TO
TERMINAL

8

UNDERLINED O OR C DENOTES SNAP ACTION OF CONTACT.
A TIMER CONTACTS SNAP CLOSED.
B CONTACTS SNAP OPEN.

FLAME SIGNAL
METER JACK

1611

M2B
O-70
C-113.5

2K1

LS2

M4A
C-60
O-85

M2A
C-70
O-109.5

M9A
C-57.5 O-109.5

2K2

M6B
C-50 O-80

TIMER MOTOR

HIGH FIRE

COMMON

MODULATE

LOW FIRE

LS HTR

6

5

7

9

10

11

12

14

1K

10 SECOND
INTERRUPTED
PILOT/IGNITION

30 SECOND
INTERRUPTED
PILOT/IGNITION

MAIN FUEL
VALVES (S)

BURNER MOTOR
(BLOWER)

120 V ALARM

B

R

W

FIRING
RATE
MOTOR

3

4

SERIES 90
CONTROLLER

6

L2

M10149

NUMBERS BELOW
DESIGNATE LINE
LOCATIONS OF
RELAY CONTACTS.
(UNDERLINE
INDICATES A
NORMALLY CLOSED
CONTACT.)

2K - 13, 9, 8
1K - 14, 14, 11

LS - 19, 9

B

R

W

60-2337—3

6

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

TIMER

0 10 20 30 40 50 60 70 80 90 100 110 120

SECONDS

TIMER DIAL

TIMER

MOTOR

BURNER

MOTOR

(BLOWER)

INTERRUPTED

PILOT/IGNITION

MAIN FUEL

VALVE(S)

(GAS OR OIL)

FIRING RATE

MOTOR

SWITCHING

ACTUAL

DAMPER

OPERATION

START

8

5

6

7

1

PREIGNITION INTERLOCKS

PREPURGE

HIGH FIRE POSITION

10 TO 11

2

MOTOR
DRIVES

DAMPER

OPEN

1

MOTOR
DRIVES

DAMPER

CLOSED

RUNNING INTERLOCKS (PROVEN AIRFLOW)

IGN
PILOT

3

STOP

START

10 SECONDS

30 SECONDS

LOW FIRE POSITION

14 TO 11

2

3

MAIN

6

5

STOP

START

MODULATE

12 TO 11

2

4

MOTOR DRIVES

DAMPER CLOSED

RUN
PERIOD

PURGE

5

STOP

LOWLOW

2

TERMINAL NUMBERS (CIRCLED).

1

SLOPE DEPENDS ON MOTOR TIMING.

2

TIMER STOPS AT 52 SECONDS UNTIL LOW FIRE PROVING SWITCH CLOSES.

3

Fig. 4. Timer sequence for R4140G1015 Programmer.

Step-By-Step Operation (R4140G1015)

Start And Prepurge

0 seconds—On a call for heat, the burner controller

contacts close. If the limits and preignition interlocks

are closed and flame relay 2K is not holding in, relay 1K

pulls in through M7B, LS2, 2K2, and the LS HTR

(lockout switch heater—thus proving its continuity).

— 1K1 closes and 1K2 opens, timer motor starts

(through 1K1, M3A, and M5B), power is applied to
terminal 8, starting the burner motor (blower); 1K3
closes.

— Prepurge begins.
4 seconds—M10A closes, M10B opens; firing rate motor

drives toward high fire position (open).

—M1B closes, bypassing 1K1; the timer can complete

its revolution if shutdown occurs.

9.5 seconds—M7B opens; running interlocks must close

(airflow must be proven) or 1K drops out, 1K3 opens,

FIRING RATE MOTOR MODULATES UNDER CONTROL OF SERIES 90

4

CONTROLLER FROM 100 TO 112 SECONDS (INCLUDING RUN
PERIOD WHILE BURNER IS FIRING).

5

TIMER STOPS AT 104 SECONDS FOR THE RUN PERIOD WITH THE
BURNER FIRING.

6

RUNNING INTERLOCKS (INCLUDING THE AIRFLOW SWITCH)
MUST REMAIN CLOSED THROUGH THE RUN PERIOD.

M10054

and ignition trials cannot be started. Running interlocks
must remain closed through the Run period or the
system shuts down; the timer completes its revolution
and recycles the programmer.

15 seconds—M11B closes; flame relay 2K can pull in if a

flame (or a condition simulating a flame) is detected. If
detected during prepurge (until 57.5 seconds), 2K pulls
in, 2K2 opens, 1K drops out, and the system shuts
down; the timer completes its revolution and recycles
the programmer (if 2K dropped out).

45 seconds—M10B closes; firing rate motor drives toward

low fire position (closed).

52 seconds—M3A opens; timer stops until the low fire

proving switch closes; timer can be stopped by opening
the timer switch (until 66 seconds when M3A closes
again).

57.5 seconds—M9A closes; the LS HTR (lockout switch
heater) begins heating in preparation for ignition trials.
— M7A closes, bypassing the preignition interlocks.

7

60-2337—3

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

Ignition Trials

60 seconds—M4A closes; power is applied to terminals 5

and 6, energizing the ignition transformer and pilot
valve (or main fuel valve(s) on terminal 7 if using direct
spark ignition).
— When a flame is detected, relay 2K pulls in, 2K2

opens, and the LS HTR stops heating; 2K1 and
2K3 close.

66 seconds—M3A closes, bypassing the low fire switch

and the timer switch.

70 seconds—M2B opens; pilot or ignition trial ends; a

flame must be detected by this time (2K pulled in and
2K1 closed) or safety shutdown occurs and the lockout
switch trips.
— M2A closes; power is applied to terminal 7,

energizing the main fuel valve(s).

— M11B opens; prevents 2K from pulling in after this

time.

80 seconds—M6B opens; 10 second interrupted pilot/

ignition (terminal 5) is de-energized.

100 seconds—M4A opens; 30 second interrupted pilot/

ignition (terminal 6) is de-energized.
— M8A closes, M8B opens; firing rate motor is

released to modulate under control of the Series 90
Controller.

104 seconds—M5B opens; timer stops with the system in

the Run condition.

Run Period (Burner is Firing)
Postpurge And Stop

104 seconds—When the operating setpoint is reached, the

burner controller contacts open; relay 1K and the main
fuel valve(s) (terminal 7) de-energize.

— 1K2 closes; timer motor starts; postpurge begins.
— When the flame goes out, relay 2K drops out.

112 seconds—M8A opens; firing rate motor stops

modulating under control of the Series 90 Controller.

116 seconds—M8B closes; firing rate motor drives toward

low fire position (closed).

120 seconds—M1B opens; timer and burner motor stop;

cycle ends.

Fig. 5 shows all contacts in the standby position (zero
seconds). The opening and closing times are shown adjacent
to each timer contact. Refer to Fig. 6 and the Step-by-Step
Operation section.

60-2337—3

8

R4140G1106 SCHEMATIC

INTERNAL

O—OPENING TIME
C—CLOSING TIME
LS DENOTES LOCKOUT SWITCH; HTR DENOTES HEATER

EXTERNAL

R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS

120V, 60 HZ
POWER SUPPLY

L2

L1
(HOT)

1

MASTER
SWITCH

UNDERLINED O OR C DENOTES SNAP ACTION OF CONTACT.
A TIMER CONTACTS SNAP CLOSED.
B CONTACTS SNAP OPEN.

1

L1

2

3

G

4

F

3 9 13 5 8 12 10

5

6

7

8

9

10

11

12

13

FLAME
DETECTOR

BURNER

LIMITS

CONTROLLER

1K1 1K2

TIP JACK

M7A
C-57.5 O-111

4

PREIGNITION
INTERLOCKS

17

17

2

M7B
O-9.5 C-116

16 3 5

14

15

16

17

18

19

M1B
C-4
O-120

M3A
O-52 C-66

B

LOW FIRE
SWITCH

LS1

NORM

13

TEST

TIMER SWITCH

20

21

22

23

M10B O-4 C-45

24

PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION

1

AS REQUIRED

2

TERMINAL 17 IS USED ONLY TO DRIVE THE SHUTTER ON A C7012E OR F
PURPLE PEPPER ULTRAVIOLET FLAME DETECTOR WITH SELF-CHECKING
FEATURE. POWER TO DRIVE THE SHUTTER IS APPLIED TO TERMINAL 17
FROM TERMINAL 8 THROUGH A SOLID STATE SWITCH IN THE R7247C
DYNAMIC SELF-CHECK AMPLIFIER. REFER TO SAMPLE BLOCK DIAGRAM
OF FIELD WIRING.

3

FOR DIRECT SPARK IGNITION OR OIL, REFER TO SAMPLE BLOCK DIAGRAM
OF FIELD WIRING FOR HOOKUP OF IGNITION AND MAIN OIL VALVE SOLENOID.

4

SOME AUTHORITIES HAVING JURISDICTION PROHIBIT THE WIRING OF ANY LIMIT
OR OPERATING CONTACTS IN SERIES WITH THE MAIN FUEL VALVE(S).

M10A C-4 O-41

M8A C-100 O-112

PLUG-IN AMPLIFIER

M11B

7

C-15 O-70

2K

2K3

RUNNING
INTERLOCKS
(INCLUDING
AIRFLOW SWITCH)

M5B
O-104
C-108

5

M8B O-100 C-116

1K3

FLAME SIGNAL
METER JACK

LS2

M4A
C-60
O-85

M2A
C-70
O-109.5

M9A
C-57.5 O-109.5

2K2

M6B
C-50 O-80

TIMER MOTOR

HIGH FIRE

COMMON

MODULATE

LOW FIRE

LS HTR

6

7

9

10

11

12

14

1611

TO 8

M2B
O-70
C-113.5

2K1

TIMER SWITCH IS SHOWN IN "NORM" POSITION; IT IS OPEN IN "TEST"

5

POSITION.

6

USE A SERIES 90 MODULATING MOTOR IF MODULATION IS REQUIRED.

7

FOR DIRECT SPARK IGNITION (OIL OR GAS), A JUMPER IS INSTALLED
BETWEEN TERMINALS 6 AND 7. REFER TO SAMPLE BLOCK
DIAGRAM OF FIELD WIRING FOR HOOKUP.

8

10 SECOND MAIN BURNER FLAME-ESTABLISHING PERIOD.

15 SECOND MAIN BURNER FLAME-ESTABLISHING PERIOD.

9

3

7

1K

10 SECOND
INTERRUPTED
PILOT/IGNITION

15 SECOND
INTERRUPTED
PILOT/IGNITION

MAIN FUEL
VALVES (S)

BURNER
MOTOR

ALARM

B

R

W

FIRING
RATE
MOTOR

8

9

4

SERIES 90
CONTROLLER

6

L2

NUMBERS BELOW
DESIGNATE LINE
LOCATIONS
RELAY CONTACTS.
(UNDERLINE
INDICATES A
NORMALLY CLOSED
CONTACT.)

2K - 16, 10, 8
1K - 17, 17, 12

LS - 22, 8

B

R

W

M10044

Fig. 5. Simplified schematic diagram of R4140G1106 Programmer.

9

60-2337—3