Installation - Honeywell 7800 Series Manual

WARNING
FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH.
To prevent possible hazardous burner operation,
perform verification of safety requirements each
time a control is installed on a burner.
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 marked
on the product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced, flame safe-
guard service technician.
4. After installation is complete, check out the product
operation as provided in these instructions.
CAUTION
To prevent electrical shock and equipment dam-
age, disconnect the power supply before begin-
ning installation. More than one power supply
disconnect may be involved.
1. To prevent electrical shock and equipment damage,
disconnect the power supply before beginning installation.
More than one power supply disconnect may be involved.
2. Wiring connections for the RM7888A are unique;
therefore, refer to Fig. 7 or the correct specifications for pro-
per subbase wiring.
3. Wiring must comply with all applicable codes, ordi-
nances and regulations.
4. Wiring, where required, must comply with NEC Class
1 (Line Voltage) wiring.
5. Loads connected to the RM7888A must not exceed
those listed on the RM7888A label or the specifications (see
Table 1).
6. Limits and interlocks must be rated to carry and break
current simultaneously to the ignition transformer, pilot valve,
and main fuel valve(s).
7. All external timers must be listed or component recog-
nized by authorities who have jurisdiction for the specific
application.
IMPORTANT:
1. 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 safe-
guard control and the main fuel valve(s).
2. Two detectors can be connected in parallel, with the
exception of infrared detectors (C7015).
3. This equipment generates, uses and can radiate radio
frequency energy, and if not installed and used in
accordance with the instructions, may cause interfer-
ence to radio communications. It has been tested and
found to comply with the limits for a Class B comput-
ing device of part 15 of FCC rules, which are designed
to provide reasonable protection against such inter-
ference 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 required to take whatever measures
are required to correct this interference.
4. This digital apparatus does not exceed the Class B
limits for radio noise of digital apparatus set out in
the Radio Interference Regulations of the Canadian
Department of Communications.
5. RM7888A cannot be connected in parallel without
isolation circuits to isolate input and output circuits.
HUMIDITY
Install the RM7888A where the relative humidity never
reaches the saturation point. The RM7888A is designed to
operate in a continuous, noncondensing moisture environ-
ment with a maximum 85 percent relative humidity. Con-
densing moisture can cause a shutdown.
VIBRATION
Do not install RM7888A where it could be subjected to
vibration in excess of 0.5G continuous maximum vibration.
WEATHER
The RM7888A is not designed to be weather tight. If
installed outdoors, the RM7888A must be protected by an
approved weather-tight enclosure.
MOUNTING WIRING SUBBASE
NOTE: For installation dimensions, see Figs 1 or 2.
1. Mount the subbase in any position except horizon-
tally with the bifurcated contacts pointing down. The stan-
dard 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. The Q7800 can be mounted directly in the control
cabinet. Be sure to allow adequate clearance for servicing,
installation, access and removal of RM7888A, dust cover,
flame amplifier, flame amplifier signal voltage probes, elec-
trical signal voltage probes and electrical field connections.
3. For surface mounting, use the back of the subbase as
a template to mark the four screw locations. Drill the pilot
holes.
4. Mount the subbase securely using four No. 6 screws.
11
RM7888A

INSTALLATION

Installation
65-0175