Relay Module And Subbase Compatiblity - Honeywell 7800 Series Installation Instructions Manual

Weather
The relay module is not designed to be weather tight.
When installed outdoors, the relay module must be
protected by an approved weather-tight enclosure.
Mounting of Remote Keyboard or Reset
Module
To comply with CE EN60730 for remote mounting of the
KDM and/or Remote Reset Module it is necessary to
provide electrical separation using insulation at least
equivalent to double or reinforced insulation.
This can be accomplished by either:
1. Optically isolating the communication and/or
remote reset lines from the control cabinet.
2. Providing physical separation from the communica-
tion and/or remote reset lines using electrical con-
duit and a 204718A Remote Display Cover Assembly
or other suitable enclosure that meets NEMA 4 class
of protection.
Mounting Wiring Subbase
See Fig. 2 for the internal block diagrams of the relay
modules.
1. Mount the subbase in any position except horizon-
tally with the bifurcated contacts pointing down. The
standard vertical position is recommended. Any
other position decreases the maximum ambient
temperature rating.
2. Select a location on a wall, burner or in an electrical
panel (required for all European devices). The
Q7800 can be mounted directly in the control cabi-
net. Be sure to allow adequate clearance for service,
installation, access or removal of the 7800 SERIES
Relay Module, KDM, flame amplifier, flame amplifier
signal voltage probes, Run/Test Switch, electrical
signal voltage probes and electrical field connec-
tions.
3. For surface mounting, use the back of the subbase
as a template to mark the four screw locations; then
drill the pilot holes.
4. Securely mount the subbase using four no. 6 screws.
NOTE: You might receive an error code 101 (via KDM) if
one of the following conditions exist:
a. The screws securing the relay to the subbase are
not tight enough, re-tighten to insure there is no
gap between the relay and the subbase.
b. If you attempt to place a 2000 series relay on a
non-compatible 1000 series subbase, this indi-
cates that you must:
• Change out the subbase to a Q7800A2003/U
or Q7800A2005/U
• Choose a compatible 1000 series relay
module
EC7820A 7800 SERIES RELAY MODULES
Relay Module and Subbase
Compatiblity
NOTE: There are several different subbase models that
can be purchased. It is important to note which
subbase is compatible with the relay module
when purchasing new, repair or replacement
parts.
Series 1000 Relay Modules
All relay product codes that start with a 1 (example:
EC7820A1026/U) can be used with existing subbase
Q7800A1003/U and Q7800A1005/U.
Series 2000 Relay Modules
All relay product codes that start with a 2 (example:
EC7820A2026/U) must be used with subbase
Q7800A2003/U and Q7800A2005/U.
Subbase Compatibility
Any Relay Module in the 1000 Series with a Software
Revision level number starting with a "5" or greater will be
compatible with all subbase models both installed and
newly purchased. This includes (Q7800A1005/U,
Q7800B1003/U), and the 2000 Series subbases
(Q7800A2005/U, Q7800B2003/U).
See Fig. 1 for Software Revision Level number location on
the label (located on the rear of the relay module).
Any relay module in the new 2000 series will only be able
to be installed on subbase Q7800A2005/U,
Q7800B2003/U and will not be backward compatible with
any Q7800A1003/U and Q7800A1005/U subbases
already installed in the field.
Fig. 1. Software revision location.
IMPORTANT
Make sure to check the relay model number and
the software revision level on the relay.
• If you attempt to place a 2000 series relay on a
non-compatible 1000 series subbase, you will
receive an error code of 101. This indicates that
you must a) change out the subbase to a
Q7800A2003/U or Q7800A2005/U or b)
choose a compatible 1000 series relay module.
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