EC7890 RM7890 · Edition 12.23
EN-11
7 SETTINGS AND ADJUSTMENTS
7.1 Selectable Site-Configurable Jumpers
The RM/EC7890 has two site-configurable jumper options, see
page 11 (7.1.1 Fig. 4. Selectable site-configurable jumpers) and
page 11 (7.1.2 Table 6. Site-Configurable Jumper Options.). If
necessary, clip the siteconfigurable jumpers with side cutters and
remove the resistors from the relay module.
7.1.1 Fig. 4. Selectable site-configurable jumpers
1 2
1
2
M11589A
SELECTABLE CONFIGURATION JUMPERS
JR2 REMOVED FROM RM7890C.
RM7890A1031/A2031 PFEP IS FIXED AT 30 SECONDS, IF
JR1 IS INTACT OR CLIPPED.
SERVICE NOTE
Clipping and removing a site-configurable jumper enhances the
level of safety. If using three-second amplifier, site-configurable
jumper JR2 must be clipped and removed. If not removed, an F46
Lockout occurs.
7.1.2 Table 6. Site-Configurable Jumper Options.
Jumper
Number
Description Intact Clipped
d
JR1
a
Pilot Flame
Establishing
Period (PFEP)
10 seconds
b
4 seconds
b
JR2
Flame Failure
Action
Relight
c
Lockout
a
Not Applicable for RM7890A1031/A2031 (30 second PFEP).
JR1 removed.
b
30 seconds for RM7890A1031/A2031.
c
The Relight feature (JR2 intact) requires a 0.8 second FFRT
Flame Amplifier. The EC/RM7890 locks out and indicates a
Fault 46 if a 3.0 second (2.0 second for RM7890A1031/
B2031, RM7890B1055/B2055 and EC7890B1028) FFRT is
used and jumper JR2 is not clipped and removed.
d
Clipping and removing a site-configurable jumper after 200
hours of operation results in a hard lockout, code 110.
e
For RM7890A1064/B2064:
Intact—Fixed 10 seconds PFEP , Ignition (terminal 10) shuts
off at 6 seconds.
Clipped—Fixed 4 seconds PFEP, Ignition (terminal 10) shuts
off at 2 seconds.
8 SAFETY AND SECURITY
8.1 Physical device protection
Device shall be accessible to authorized personnel only – Instal-
lation on publicly accessible places is not recommended as this
could lead to unwanted and potentially unsafe changes to device
(wiring, configuration, etc).
It is recommended to lock the device in an enclosed cabinet with
access allowed only to approved and trained personnel. Also, it is
strongly advised to keep all the wiring of device physically secure.
Physical protection of the device is applied via Run/Test switch la-
bel/seal. It is intended to prevent and detect unauthorized access.
8.2 Modbus & DDL Interface security
Any conducts critical to device functionality (DDL, Modbus lines
etc.) shall be physically protected (installed outside public access)
since they could be damaged or tampered-with by unauthorized
people, either accidentally or for purpose.
Modbus RS-485 protocols do not support security features.
For the Honeywell proprietary DDL interface - only DDL devices
(S7800, S7810) shall be connected to the Burner Controller DDL
line.
8.3 License agreement
Copying and reverse engineering is prohibited by the law.
9 DISPOSAL
Devices with electronic components:
WEEE Directive 2012/19/EU – Waste Electrical and Elec-
tronic Equipment Directive
At the end of the product life (number of operating cycles
reached), dispose of the packaging and product in a correspond-
ing recycling centre. Do not dispose of the unit with the usual
domestic refuse. Do not burn the product.
On request, old units may be returned carriage paid to the manu-
facturer in accordance with the relevant waste legislation require-
ments.
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