Installing The Flame Detector; Flame Detection Systems; Plug-In Flame Signal Amplifiers; Applicable Flame Detectors - Honeywell R4140G Installation Instructions Manual

25,000V rms in a salt bath for one minute without
breakdown. It is rated at 200°F (93°C) for continuous
duty, and up to 350°F (177°C) for intermittent use.
Refer to the appropriate wiring diagram in the
Specifications for the R4140G,L or M. Follow the burner
manufacturer's wiring diagram, if provided.
Make sure the loads do not exceed the terminal ratings.
Refer to the label on the R4140 or to the Terminal
Ratings in the Specifications section of the
Specifications for the R41406,L or M.
Check the power supply circuit. The voltage and
frequency must match those of the R4140. Do not
connect the R4140 to a circuit that is subjected to line
voltage variations, such as would occur with on-off
switching of heavy loads. A separate power supply
circuit can be required for the flame safeguard control.
Add required disconnect means and overload
protection.
Check all wiring circuits and complete the Static
Checkout in Table 2 before installing the R4140.

Plug-In Flame Signal Amplifiers

Type Color Checking
Rectification Green No
Dynamic
Self-Check
Infrared Red No
Dynamic
Ampli-
Check®
Ultraviolet Purple No
Blue Dynamic
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
burner operation and shuts down the burner if the detection system fails.
R4140G, L AND M FLAME SAFEGUARD PROGRAMMING CONTROLS
Table 1. Flame Detection Systems.
Self- Flame Failure
Model Response Time
R7247A 2 to 4 second
R7247A,
b
R7247B
b
R7247B
d
R7247C
R7248A 2 to 4 second
b
R7248B
R7249A 2 to 4 second
d
R7476A

Installing the Flame Detector

NOTE: Table 1 lists the flame detection systems available
for use with R4140 Programmers. Make sure you
are using the correct combination of amplifier and
flame detector(s).
Proper flame detector installation is the basis of a safe and
reliable flame safeguard installation. Refer to the instructions
packed with the flame detector and the burner manufacturer's
instructions. Follow the instructions carefully for the best
possible flame detector application.
Keep the flame signal lead wires as short as possible from
the flame detector to the wiring subbase. Capacitance
increases with Ieadwire length, reducing the signal strength.
The maximum permissible leadwire length depends on the
type of flame detector, leadwire, and conduit. The ultimate
limiting factor in flame signal leadwire length is the signal
current. Refer to Table 4 in the Checkout section.

Applicable Flame Detectors

Fuel Type
Gas Rectifying
Flame Rods
Oil Rectifying
Photocells
Gas, Oil, Ultraviolet
Coal (Purple Peeper
Gas Rectifying
Flame Rods
Gas, Oil, Ultraviolet
Coal (Purple Peeper
Gas, Oil, Infrared (Lead
Coal Sulfide)
Gas, Oil Ultraviolet
(Minipeeper)
Gas, Oil, Ultraviolet
Coal (Adjustable
Sensitivity)
3
Models
a
Holders C7004. C7007,
C7011. Complete
Assemblies: C7005,
C7008, C7009, Q179.
C7003, C7010, C7013,
c
C7014.
C7012A or C.
a
Holders : C7004, C7007,
C7011. Complete
Assemblies: C7005,
C7008, C7009, Q179.
C7012E or F.
C7015.
C7027, C7035, C7044.
C7076.
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