RM7890, RM7895 100 Vac
5 .
Limits and interlocks must be rated to simultaneously
carry and break current to the ignition transformer, pilot
valve, and main fuel valve(s).
6 .
All external timers must be Listed or Component-Recog-
nized by authorities who have proper jurisdiction.
7 .
For on-off gas-fired systems, some authorities who have
jurisdiction prohibit the wiring of any limit or operating
contacts in series between the flame
safeguard control and the main fuel valve(s).
8 .
Two flame detectors can be connected in parallel with the
exception of Flame Detectors C7915, C7927,C7961 and
C7962.
9 .
This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accor-
dance with the instructions, can cause interference with
radio communications. It has been tested and found to
comply with the limits for a Class B computing device
of Part 15 of FCC rules which are designed to provide
reasonable protection against such interference when
operated in a commercial environment. Operation of this
equipment in a residential area may cause interference;
in which case, the users at their own expense may be re-
quired to take whatever measures are required to correct
this interference.
10 .
This digital apparatus does not exceed the Class B limits
for radio noise for digital apparatus set out in the Radio
Interference Regulations of the Canadian Department of
Communications.
Location
Humidity
Install the relay module where the relative humidity never
reaches the saturation point. The relay module is designed
to operate in a maximum 85% relative humidity continuous,
noncondensing, moisture environment. Condensing moisture
can cause a safety shutdown.
Vibration
Do not install the relay module where it could be subjected to
vibration in excess of 0.5G continuous maximum vibration.
Weather
The relay module is not designed to be weather tight. When
installed outdoors, locate the relay module inside 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 elec-
trical 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 communication
and/or remote reset lines using electrical conduit and a
204718A Remote Display Cover Assembly or other suitable
enclosure that meets IP40 class of protection.
Relay Module and Subbase Compatiblity
NOTE: There are several different subbase models that can
be purchased . It is important to insure that the sub-
base is compatible with the relay module when pur-
chasing new, repair or replacement parts .
This model will only be available as the 1000 Series Relay
Modules, if you have subbase incompatibly issues please see
below.
Series 1000 Relay Modules
All relay product codes that start with a 1 (example:
RM7840G1014/U) can be used with existing subbase
Q7800A1003/U and Q7800A1005/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. 3 for Software Revision Level number location on the
label (located on the rear of the relay module).
Fig. 3. Software revision location
IMPORTANT
Make sure to check the relay model number and the soft-
ware revision level on the relay.
If you receive an error code of 101. This indicates that you
have the wrong subbase model. YOu must change out the
subbase to Q7800A1003/U or Q7800A1005/U
Mounting Wiring Subbase
See Fig. 1 and 2 for installation dimensions.
1 .
Mount the subbase in any position except horizontally with
the bifurcated contacts pointing down. The standard verti-
cal position is recommended. Any other position decreases
the maximum ambient temperature rating.
2 .
Select a location on a wall, burner or electrical panel. The
Q7800 can be mounted directly in the control cabinet. Be
sure to allow adequate clearance for servicing, installation,
access or removal of the relay module, expanded annunci-
ator, KDM, flame amplifier, flame amplifier signal voltage
probes, run/test switch, electrical signal voltage probes
and electrical field connections.
32-00216-01
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