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7800 SERIES EC7895A, RM7895A RELAY MODULE
65-0205
5
Sequence Timing For Normal Operation:
Flame Establishing Period
Device Initiate Standby Purge Pilot Main
EC7895A/RM7895A 10 sec. * ** 4 or 10 sec. No
*STANDBY and RUN can be an infinite time period.
** PURGE is determined by the ST7800A Purge Card selected.
Approval Bodies:
RM7895A:
Underwriters Laboratories Inc. listed: File no. MP268,
Guide no. MCCZ.
Factory Mutual approved.
EC7895A:
Factory Mutual approved.
Mounting:
Q7800A for panel mount or Q7800B for wall or burner mount.
Required Components:
Plug-in Flame Signal Amplifier, see Table 2.
Plug-in Purge Timer Cards: Selectable ST7800A, two
seconds to 30 minutes.
Q7800A or Q7800B.
Fig. 1. Mounting dimensions of EC7895/RM7895 Relay Module and Q7800A Subbase in in. (mm).
POWER
PILOT
FLAME
MAIN
ALARM
RESET
5
(127)
5 (127)
M11135
(133)
BURNER
CONTROL
REMOVE ONLY FOR TERMINAL TEST ACCESS.
1
1
5-1/4
Accessories:
Optional:
Network Interface Unit,
Part No. Q7700A1014, 120V 50/60 Hz
Part No. Q7700B1004, 100V to 200V 50/60 Hz
Network Interface ControlBus Module,
Part No. QS7800A1001.
COMBUSTION SYSTEM MANAGER™,
Part No. ZM7850A1001.
ControlBus 5-Wire Electrical Connector,
Part No. 203541.
DATA CONTROLBUS MODULE™,
Part No. S7810A1009.
Dust Cover, Part No. 221729A.
Flame Simulators:
UV Flame Simulator, Part No. 203659.
Rectification Simulator, Part No. 123514A.
Keyboard Display Module, Part No. S7800A1001,
English.
Keyboard Display Module, Part No. S7800A1118,
Japanese.
Remote Display Mounting Bracket, Part No. 203765.
Remote Display Power Supply, Part No. 203968A Plug-in.
Remote Reset Module, Part No. 57820A1007.
Sixty-inch Extension Cable Assembly, Part No. 221818A.