7800 SERIES RELAY MODULES
SIL 3 capable Exida: IEC/EN 61508:2010 Parts 1-7, SIL 3
CSD Control Safety Devices: Acceptable CSD-1
EAC: TC N RU д-US.Aи3O.B.04013
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
2. Check the ratings given in the instructions and
marked on the product to make sure the product is
suitable for your application.
3. Installer must be a trained, experienced, flame safe-
4. After installation is complete, check out the product
operation as provided in these instructions.
Fire or Explosion Hazard.Can cause property
damage, severe injury, or death. Verify safety
requirements each time a control is installed on a
Electrical Shock Hazard. Can cause electrical
shock or equipment/control damage.Disconnect
the power supply before beginning installation.
1. Wiring connections for the relay module are
unique; refer to Fig. 2 or the correct Specifications
for proper subbase wiring and sequence charts.
2. Wiring must comply with all applicable codes,
ordinances and regulations.
3. Wiring must comply with NEC Class 1 (Line Volt-
4. Loads connected to the RM7838A must not
exceed those listed on the RM7838A label or the
Specifications; see Table 3.
5. Limits and interlocks must be rated to simultane-
ously carry and break current to the ignition trans-
former, pilot valve, and main fuel valves.
6. All external timers must be listed or component-
recognized by authorities having proper jurisdic-
7. For on-off gas-fired systems, some authorities
who have jurisdiction prohibit the wiring of any
limit or operating contacts in series between the
flame safeguard control and the main fuel valve(s).
8. Two flame detectors can be connected in parallel
with the exception of Infrared Flame Detectors
(C7015, C7915), Ultraviolet Flame Detectors
(C7927, C7961) or Visible Light Detector (C7962).
9. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and
used in accordance with the instructions, can
cause interference with radio communications. It
has been tested and found to comply with the lim-
its for a Class B computing device of Part 15 of
FCC rules, which are designed to provide reason-
able protection against such interference when
operated in a commercial environment. Operation
of this equipment in a residential area can cause
interference, in which case, users, at their own
expense, may be required to take whatever mea-
sures are required to correct this interference.
10.This digital apparatus does not exceed the Class B
limits for radio noise for digital apparatus set out
in the Radio Interference Regulations of the Cana-
dian Department of Communications.
Install the relay module where the relative humidity never
reaches the saturation point. The relay module is designed
to operate in a maximum 85% relative humidity
continuous, noncondensing, moisture environment.
Condensing moisture can cause a safety shutdown.