Assembly - Honeywell 7800 Series Manual

RM7823A

ASSEMBLY

MOUNTING RM7823A
NOTE: For installation dimensions, see Figs. 1 or 2.
RELAY MODULE MOUNTING
1. Mount the RM7823A vertically, see Figs. 8 or 9, or
mount horizontally with the knife blade terminals pointing
downward. When mounted on the Q7800A, the RM7823A
must be in an electrical enclosure.
2. Select the location in the electrical enclosure. Be sure
to allow adequate clearance for servicing, installation and
removal of the RM7823A, Dust Cover, flame amplifier,
flame amplifier signal voltage probes, electrical signal volt-
age probes and electrical connections.
a. Allow an additional two inches below the RM7823A
for the flame amplifier mounting.
b. Allow an optional three inches minimum to both sides
of the RM7823A for electrical signal voltage probes.
3. Make sure no subbase wiring is projecting beyond the
terminal blocks. Tuck wiring in against the back of the
subbase so it does not interfere with the knife blade termi-
nals or bifurcated contacts.
4. Mount the RM7823A by aligning the four L shaped
corner guides and knife blade terminals with the bifurcated
contacts on the wiring subbase and tightening the two screws
securely without deforming the plastic.
Fig. 8—Electrical panel installation.
MOUNTING DUST COVER
1. Align the two interlocking ears of the Dust Cover with
the two mating slots on the RM7823A, see Fig. 10.
2. Insert the two interlocking ears into the two mating
slots and, with a hinge action, push on the upper corners of
the Dust Cover to secure it to the RM7823A.
3. Be sure the Dust Cover is firmly in place.
65-0106—2
Fig. 9—Wall or burner installation.
Fig. 10—Dust Cover mounting.
INSTALLING PLUG-IN FLAME SIGNAL
AMPLIFIER
1. Disconnect the power supply before beginning instal-
lation to prevent electrical shock and equipment damage.
More than one disconnect may be involved.
2. Align the amplifier circuit board edge connector with
the keyed receptacle on the RM7823A. Ensure the amplifier
nameplate faces away from the Relay Module, see Fig. 11.
3. Push in the amplifier until the circuit board is fully
inserted into the receptacle and then push the amplifier
toward the RM7823A retaining clasp.
4. Verify the amplifier is firmly in place.
5. Perform all required checkout tests.
12
Assembly