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IMPORTANT
Flame Detection System available for use with
RM7824A. To select your Plug-in Flame Signal
Amplifier and applicable Flame Detector, see Table 2
and Fig. 3.
Plug-in Flame Signal Amplifiers
Type
Color
Rectification Green
Infrared
Red
Optical
White
a
Circuitry tests all electronic components in the flame detection system (amplifier and detector) 12 times a minute during burner
operation and shuts down the burner if the detection system fails.
Device
Initiate
RM7824A
10 seconds
* STANDBY and RUN can be an infinite time period.
Approval Bodies:
Underwriters Laboratories Inc. Component Recognized: File
no. MP268, guide no. MCCZ.
Canadian Standards Association certified: LR9S329-3.
Federal Communications Commission: Part 15,
Class B-Emissions.
Mounting:
Q7800A for panel mount or Q7800B for wall or burner mount.
Required Components:
Plug-in Flame Signal Amplifier; see Fig. 2.
Q7800A or Q7800B Wiring Subbase.
Accessories:
Optional:
ZM7850A1001 Combustion System Manager™.
Table 2. Flame Detection Systems.
Self-Checking
Model
Dynamic
R7824C
Self-Check
No
R7848A
Dynamic
R7848B
AMPLI-CHECK™
Dynamic
R7851B
AMPLI-CHECK™
Dynamic
R7851C
Self-Check
Table 3. Sequence Timing For Normal Operation.
Standby
*
CAUTION
Equipment Damage Hazard.
Using wrong software can damage equipment.
To prevent the control from sequencing on power up,
RM7824 Relay Modules with software revision 2424 or
less should not be used with R7848 Infrared Amplifiers
and C7015 Infrared Flame Detectors, unless a
ten-second delay is provided.
Flame Failure
Response Time
a
3 seconds
Gas, oil, coal
1.0 or 3.0
seconds
3 seconds
Pilot Flame Establishing Period
4 or 10 seconds
Q7700A1014 Communication Interface Base Unit.
QS7800A1001 Communication Interface ControlBus
Module.
203541 ControlBus 5-wire Electrical Connector.
S7810A1009 Data ControlBus™ Module.
S7810M1003 ModBus Module.
205321B Flush Mounting Kit for S7800 Keyboard Display
Module.
S7800AXXXX Keyboard Display Module: English, Spanish,
French, German, Italian, Portuguese, Katakana.
204718A,B NEMA 4 and NEMA 1 Weatherproofing Kit for
S7800 Keyboard Display Module.
203765 Remote Display Mounting Bracket.
S7820A1007 Remote Reset Module.
221818A Sixty-inch Extension Cable Assembly.
221818C 120-inch Extension Cable Assembly.
3
7800 SERIES RM7824A RELAY MODULE
Applicable Flame Detectors
Fuel
Type
Ultraviolet
(Purple Peeper™)
Infrared
(Lead Sulfide)
Optical
(UV, Visible Light, IR)
Optical (UV only)
*
Models
C7024E,F
C7015
C7927,
C7962
C7961
Run
65-0155—2
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