Safety And Security - Honeywell 7800 Series Installation Instructions Manual

Sequence
PILOT IGN
MAIN IGN
(RM7895 Only)
RUN
RESET/ALARM TEST

SAFETY AND SECURITY

Physical device protection
Device shall be accessible to authorized personnel only – In-
stallation on publicly accessible places is not recommended
as this could lead to unwanted and potentially unsafe chang-
es to device (wiring, configuration, etc).
It is recommended to lock the device in an enclosed cabinet
with access allowed only to approved and trained person-
nel. 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 label/seal. It is intended to prevent and detect unau-
thorized access.
Modbus & DDL Interface security
Any conducts critical to device functionality (DDL, Modbus
lines etc.) shall be physically protected (installed outside pub-
lic access) since they could be damaged or tampered-with by
unauthorized people, either accidentally or for purpose.
Modbus RS-485 & DDL protocols do not support security fea-
tures. For DDL interface - only DDL devices shall be connect-
ed to the Burner Controller DDL line.
License agreement
Copying and reverse engineering is prohibited by the law.
Table 14. Sequence and Status Hold Information. (Continued)
The LED indicates the burner status, POWER, PILOT, and FLAME, which is the period of time the
relay module permits the pilot valve and ignition to be energized and the pilot flame to be
established.
The LED indicates the burner status, POWER, PILOT, FLAME, and MAIN, which is the period of
time the RM7895 permits the main valve to be open and the main flame to be tested.
The LED indicates the burner status, POWER, PILOT, FLAME and MAIN, which is the period of
time after the Ignition Trials and before the operating controller setpoint is reached. During this
time, the burner is firing under the control of the operating controller.
The LED indicates the burner status, POWER and ALARM. This condition indicates that the reset
pushbutton is pressed. If it is held for more than four seconds, the alarm output is energized. The
alarm output will be de-energized after the reset pushbutton is released.
Information
27
RM7890, RM7895 100 Vac
32-00216-01