R4140G, L AND M FLAME SAFEGUARD PROGRAMMING CONTROLS
60-0770—2
8
Installing Jumper on Back of Programmer (Fig. 6)
Some R4140G, L, and M models have provisions for
extending the main burner flame-establishing period
(MBFEP) at terminal 6 by installing a jumper on the back of
the programmer. If you are installing one of these models,
determine the required MBFEP. If you need the longer period
provided at terminal 6, install the jumper (included in a bag
assembly with the R4140) between the terminals labeled
JUMPER TO EXTEND MAIN IGN. TRIAL on the back of the
programmer. If you do not need the longer period, leave the
jumper off.
NOTE:
Some R4140 models for use in Australia have
jumper terminals on the back of the programmer for
safety shutdown alarm options; these jumpers
cannot be used to extend the MBFEP. These R4140
models are shipped with a jumper link between the
N.O. screw terminals on the back of the
programmer. This results in alarm operation on
safety shutdown. N.C. screw terminals are provided
for an external auxiliary safety shutdown circuit.
Refer to the R4140 Specifications for these models.
A system can be upgraded from on-off to modulating by
replacing an R4140M with an R4140G (Fig. 7). A system can
be upgraded to meet Factory Mutual and Industrial Risk
Insurers (formerly FlA) requirements by replacing an R4140M
or an R4140G with an R4140L (Fig. 8).
Table 3. R4140 Applications.
a
Firing rate motor must close by itself (spring-return)
when power is removed.
FM Factory Mutual requirements.
IRl Industrial Risk Insurers (formerly FlA) requirements.
UL Underwriters Laboratories Inc. requirements.
IMPORTANT
Before replacing an R4140, make sure the
replacement model has the required:
— prepurge time.
— pilot/ignition timing on terminal 6.
— 5-second ignition on terminal 18 (if required).
— interlock circuits.
— safety features.
— electrical ratings.
— temperature ratings.
— approvals.
1
2
1
2
AN R4140L IS SHOWN; R4140G AND R4140M PROGRAMMERS HAVE
FEWER SPRING CONNECTORS. TERMINAL NUMBERS ARE NOT ON
THE PROGRAMMER, BUT ARE SHOWN FOR REFERENCE.
INSTALL JUMPER (INCLUDED IN BAG ASSEMBLY) TO OBTAIN THE
LONGER MAIN BURNER FLAME-ESTABLISHING PERIOD AVAILABLE
AT TERMINAL 6.
5
6
7
8
G
3
4
9
10
11
18
17
16
15
14
L1
L2
12
13
F
JUMPER
JUMPER TO
EXTEND MAIN
IGN. TRIAL
C8346
Fig. 6. Installing jumper to extend main burner flame-
establishing period.
Upgrading Systems
Conveniently, the R4140 family was developed in models of
varying complexity to allow the user to choose the simplest
programmer that meets their application requirements (Table 3).
Application
Requirements
Interlock
Circuits
Firing Rate
Switching
Applicable
R4140
UL On-Off
Start and
running
None
R4140M
UL On-Off (with
2-stage firing)
Start,
running, and
low fire
1-wire
a
(open
damper
contacts)
Several
R4140Ms
UL modulating
(with low high-
low prepurge)
Start or
pre-ignition,
running, and
low fire
4-wire
R4140G
FM/IRl
modulating (with
low-high-low
prepurge and
proven high fire
purge)
Preignition,
lockout, high
fire, and low
fire
4-wire
R4140L