EC7890 RM7890 · Edition 07.23
EN-2
This document covers the following 7800 Series Relay Modules:
1000-Series 2000-Series
• RM7890A1015 • RM7890B2014
• RM7890A1031 • RM7890A2015
• RM7890A1064 • RM7890B2030
• RM7890B1014 • RM7890A2031
• RM7890B1030 • RM7890B2055
• RM7890B1055 • RM7890A2064
• EC7890B1028
2 SPECIFICATIONS
2.1 Electrical Ratings:
Voltage and Frequency:
RM7890: 120 Vac (+10/-15%), 50/60Hz (±10%),
EC7890: 220-240 Vac (+10%/-15%), 50/60Hz (±10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, type SC or equiva-
lent, fast blow.
➔ For more Information, see .
2.2 Environmental Ratings
Ambient Temperature:
Operating: -40°F to +140°F (-40°C to +60°C),
Storage: -40°F to +150°F (-40°C to +66°C).
Humidity: 85% relative humidity continuous, noncondensing.
Vibration: 0.5G environment.
2.3 SIL 3 Capable
SIL 3 Capable in a properly designed Safety Instrumented Sys-
tem. See certificate and assessment report on www.exida.com.
2.4 Approvals
2.4.1 RM7890A,B:
Underwriters Laboratories Inc. Listed: File No. MP268.
ANSI/UL 60730-2-5 / CSA C22.2 No. 60730-2-5 - Automat-
ic Electrical Controls for Household and Similar Use, Part 2-5:
Particular Requirements for Automatic Electrical Burner Control
Systems
Factory Mutual Approved: Report No. 1V9A0.AF.
CE approved - only RM7890A1064, RM7890B1055,
RM7890A2064, RM7890B2055
UKCA approved - only RM7890A1064, RM7890B1055,
RM7890A2064, RM7890B2055
EAC: TC N RU д-US.Aи3O.B.04013
Federal Communications Commission: Part 15, Class B, Emis-
sions.
2.4.2 EC7890:
CE approved
CE approvals cover:
– Gas Appliances Regulation: 2016/426/EU GAR
– Low Voltage Directive: 2014/35/EU LVD
– EMC Directive: 2014/30/EU EMC (Immunity Emission conform-
ity can only be verified in combination with the appliance)
– KIWA: certificate # 18GR0996/00, PIN 0063CT1466
Applicable Standards:
– EN298:2012 Automatic burner controls
– EN60335-2-102 Household and similar electrical appliances
– EN746-2 Industrial thermoprocessing - fuel handling systems
UKCA approved
UKCA approvals cover:
– Gas Appliances Regulation: 2016/426/EU GAR
– Gas Appliances and Miscellaneous Amendment Regulations
2018 No 389
– Amendments to UK SI 2019/696 Product Safety and Metrolo-
gy
– Product Safety, Metrology and Mutual Recognition Agreement
(Amendment) (EU Exit) Regulations 2019 No 1246
– KIWA: certificate # 18GR0996/02, PIN 0063CT1466
Applicable Standards:
– BS EN298:2012 Automatic burner controls
EAC: TC N RU д-US.Aи3O.B.04013
Federal Communications Commission: Part 15, Class B, Emis-
sions.
➔ RM7890A1015, RM7890A1031, RM7890B1014,
RM7890B1030, RM7890A2015, RM7890A2031,
RM7890B2014 and RM7890B2030 are only rated cULus.
➔ EC7890B1028 is only rated CE.
➔ RM7890A1064, RM7890B1055, RM7890A2064 and
RM7890B2055 are rated cULus and CE.
3 INSTALLATION
WARNING
Fire or Explosion Hazard.
Can cause property damage, serious injury, or death.
– To prevent possible hazardous burner operation, verify safety
requirements each time a control is installed on a burner.
WARNING
Electrical Shock Hazard.
Can cause personal injury, death or equipment damage.
– Disconnect the power supply before beginning installation.
3.1 When Installing this Product...
1
Read these instructions carefully. Failure to follow them could
damage the product or cause a hazardous condition.
2
Check the ratings given in the instructions and marked on the
product to make sure the product is suitable for the application.
3
Installer must be a trained, experienced, flame safeguard
service technician.
4
After installation is complete, check out the product operation
as provided in these instructions.
IMPORTANT
1 Wiring connections for the relay modules are unique; refer to
or the appropriate Specifications for individual subbase wiring.
2 Wiring must comply with all applicable codes, ordinances and
regulations.
3 Wiring must comply with NEC Class 1 (Line Voltage) wiring.
4 Loads connected to the RM/EC7890 must not exceed those
listed on the RM/EC7890 label or the Specifications; see , ,
and .
5 Limits and interlocks must be rated to simultaneously carry
and break current to the ignition transformer, pilot valve, and
main fuel valve(s).
6 All external timers must be listed or componentrecognized by
authorities who have proper jurisdiction.
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
following exceptions:
• C7927 Ultraviolet Detector
• C7915 Infrared Detector
9 This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accord-
ance with the instructions, can cause interference with radio
communications. It has been tested and found to comply with
the limits for a Class B computing device of Part 15 of FCC
rules which are designed to provide reasonable protection
against such interference when operated in a commercial
environment. Operation of this equipment in a residential area
can cause interference, in which case, the users, at their own
expense, may be required to take whatever measures are
required to correct this interference.
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