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R7824, R7847, R7848, R7849, R7851, R7852, R7861, R7886 AMPLIFIERS FOR 7800 SERIES AND R7140 RELAY MODULES
5 65-0109—14
CAUTION
Equipment Damage Hazard.
Incorrect combination of relay module, amplifier
and flame detector can cause equipment damage.
In infrared applications (C7015 Infrared Flame Detector
and R7848 Amplifier) using the RM7890 Relay Module
with software version 4004 or less requires a ten-
second delay to start sequence. This applies only to the
initial power of the RM7890.
INSTALLATION
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 on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced, flame safeguard
control technician.
4. After installation is complete, check out the product oper-
ation as provided in these instructions.
WARNING
Electric Shock Hazard.
Can cause electrical shock, serious injury or death.
Disconnect the power supply before beginning
installation. More than one power supply disconnection
can be involved.
IMPORTANT
1. Wiring must comply with all applicable codes, ordi-
nances and regulations
2. Wiring (where required) must comply with NEC Class
1 (Line Voltage) wiring.
3. Perform all required checkout tests after installation is
complete.
CAUTION
Equipment Damage Hazard.
Can cause equipment damage.
Disconnect 7800 SERIES and R7140 Relay Module
power before removing amplifier.
Installing Plug-In Flame
Signal Amplifier (Fig. 2)
WARNING
Electric Shock Hazard.
Can cause severe injury, death or property damage.
Disconnect the power supply before beginning
installation. More than one power supply disconnection
can be involved.
1. Align the amplifier circuit board edge connector with the
keyed receptacle on the 7800 SERIES and R7140 Relay
Module. Be sure the amplifier nameplate faces away
from the Relay Module.
2. Push in the amplifier until the circuit board is fully
inserted into the receptacle and then push the amplifier
toward the 7800 SERIES and R7140 Relay Module
retaining clasp.
3. Be sure the amplifier is firmly in place.
4. Perform all required checkout tests.
Installing Flame Detector
NOTE: Table 2 lists flame detection systems available for use
with 7800 SERIES and R7140 Relay Modules. Be
sure to use the correct combination of amplifier and
flame detector.
Proper flame detector installation is the basis of a safe and
reliable flame safeguard installation. Refer to the Instructions
packed with the flame detector and the equipment
manufacturer instructions.
Keep the flame signal leadwires as short as possible from the
flame detector to the wiring subbase. Capacitance increases
with leadwire length, reducing the signal strength. The
maximum permissible leadwire length depends on the type of
flame detector, leadwire and conduit. However, the ultimate
limiting factor for the flame detector leadwire is the flame
signal; see Table 3 in the Checkout section.
Fig. 2. Installing flame signal amplifier.
Wiring
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property damage.
Disconnect power supply before beginning installation.
More than one disconnection can be involved.
5. Remove the 7800 SERIES and R7140 Relay Module
from the wiring subbase.
6. Refer to Fig. 3 for proper flame detector wiring.