Forney Corporation
UNIFLAME User’s Manual
Publication 372000-48 Rev H
4.1 REMOTE FILE SELECTION
The UNIFLAME Series flame detectors have more than one internal memory file. The user has the option
of storing different detector setpoints for different operating conditions (e.g. gas/oil, pilot/main, low
load/high load, etc.) in these files. Each detector has four (A, B, C, and D) programmable files. With RFS
selected as “LINE”, one or two external switches (user supplied) will select between the files when RFS1
or RFS2 wires are connected to 24 Vdc (-).
RFS1
(Blue Wire – Pin J)
RFS2
(Yellow Wire – Pin K)
File Selected
Open Open
A
Closed Open
B
Open Closed
C
Closed Closed
D
The user may also select RFS as “KEY” which will allow manual file selection at the detector keypad, or
select “COMM” which will allow manual selection at a remote computer running the Forney
SMARTDisplay Software.
Forney recommends the use of a shielded cable for the two Remote File Select switches or relays. The
contacts should be rated for low current operation at 3 mA dc. Relays for file switching are supplied by
others, unless specified under a Forney Corporation system’s project.
Figure 13 – Remote File Selection
13
