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Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 FAX (800) 872-9725 www.raypak.com
Litho in U.S.A.
C-5 Latching Lockout Module (LLM)
Module Control Board
Microprocessor Based
Solid State Circuit Board
Non-Volatile EEPROM Latching Mechanism
LED Indicators
Power - Green
Fault - Red
Relay Actuated - Red
Electrical Characteristics
24 VAC, 0.25 A, 60 Hz
Ambient Conditions
Temperature: -40 to 175
°F
Humidity: 90% RH Non-condensing
Enclosure
Heavy Gauge Steel
NEMA 3R Rated Rainproof
6 1/4” W x 10” H x 5” D
Boiler Mounted
Limited One-Year Warranty
Sample Specification
Section I: General Requirements
1. Provide a Raypak C-5 Latching Lockout Module (LLM) that shall provide electronic ignition supervision and,
upon flame failure, shall require local manual intervention for fault reset.
2. The LLM shall be microprocessor based.
3. The LLM shall be UL Listed.
4. The LLM shall carry a one-year limited warranty against failure caused by defective workmanship or
material.
5. The LLM and boiler shall be manufactured by the same company and shall carry single source
accountability.
Section II: Equipment Enclosure
1. The LLM enclosure shall be constructed of heavy gauge steel and shall be protected with a baked-on UV
inhibited Polytuf powder coat finish.
2. The LLM enclosure shall be boiler mounted and shall be NEMA 3R rainproof rated.
Section III: Control Functions
1. The LLM shall monitor the boiler’s electronic ignition system. Upon flame failure the LLM shall deenergize
the main gas safety shutoff valve and the pilot valve. The LLM shall require manual local intervention for
reset − cycling boiler power off and on shall not reset the LLM.
2. The LLM shall be equipped with a manual reset button for ignition reset and boiler restart.
Section IV: Display Functions
1. The LLM shall be equipped with the following indication and status LEDs:
a) Power - a green LED shall indicate that power is available to the unit.
b) Fault - a flashing red LED shall indicate that the LLM is in lockout mode and that the unit must be
manually reset before ignition retry.
c) Relay - a red LED (visible with the enclosure cover removed) shall indicate that the relay is actuated.
d) Remote [optional - supplied by others] - contacts shall be supplied to activate a remote alarm and to
illuminate an additional fault LED that is supplied by others.
Excerpts from ASME CSD-1
CF-310 Primary Safety Control
(a) Each main burner assembly shall be provided with a primary safety control that will deenergize the
main gas safety shutoff valve(s) and shutoff pilot fuel upon loss of flame at the point of supervision as
specified in CF-330.
(d) Primary safety controls shall require manual intervention to reset.
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