Installation; Location; Temperature; Humidity - Honeywell R4140G Installation Instructions Manual

R4140G, L AND M FLAME SAFEGUARD PROGRAMMING CONTROLS

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 product
operation as provided in these instructions.
CAUTION
1. Disconnect power supply before beginning
installation to prevent electrical shock and
equipment damage.
2. All wiring must be NEC Class 1 (line voltage).
3. Loads connected to the control terminals must
not exceed those listed on the R4140 label or in
the Specifications section of the Specifications for
the R4140G,L or M.
4. Limits and interlocks must be rated to carry and
break current to the ignition transformer, pilot
valve, and main fuel valve(s) simultaneously.
5. All external timers must be listed or component
recognized by authorities having jurisdiction for
the specific purpose for which they are used.
IMPORTANT
1. For on-off gas-fired systems, some authorities
having jurisdiction prohibit the wiring of any limit or
operating contacts in series between the flame
safeguard control and the main fuel valve(s).
2. Do not connect more than two C7012E,F or C7076A
Ultraviolet Flame Detectors (with self-checking
shutter) in parallel to the same terminals.
Use applicable installation instructions provided by the burner
manufacturer in addition to the corresponding instructions
given here. Before putting the system into service, check out
the installation using the procedures in the Checkout section
and any other procedures stipulated by the burner
manufacturer.

Location

Temperature

Install the R4140 where the surrounding temperatures
remain within the Ambient Operating Temperature Ratings in
the Specifications section of the Specifications for the
R4140G,L or M.

Humidity

Install the R4140 where the relative humidity never reaches
the saturation point. Condensation of moisture on the R4140
can cause enough leakage to short the flame signal to ground
and thus prevent the burner from starting.
Vibration
Do not install the R4140 where it could be subjected to
excessive vibration. Vibration shortens the life of the
electronic components.
60-0770—2
Weather
The R4140 is not designed to be weather tight. If it is installed
outdoors, it must be protected.
Mounting the Wiring Subbase
NOTE: For installation dimensions, see Fig. 1 and 2 in the
Specifications for the R4140G,L or M.
The subbase can be mounted in any position except
horizontally with the knife-blade contacts pointing down.
The standard vertical position (shown in Fig. 5) is
recommended. Any other position decreases the
maximum ambient temperature rating.
Select a location on a wall or instrument panel. (The
0520A Subbase can be mounted directly in the
customer's cabinet.) Be sure to allow clearances for
servicing and for removal of the R4140.
IMPORTANT
Do not mount the wiring subbase horizontally with
the knife-blade contacts pointing down.
For surface mounting, use the back of the subbase as
a template to mark the four screw locations. Drill the
pilot holes.
Insert the mounting screws and tighten them securely.
Wiring to Subbase
CAUTION
Make sure the wiring to terminal 7 does not touch any
other terminal, especially terminal 8.
All wiring must comply with all applicable electrical
codes, ordinances, and regulations. Use NEC Class 1
(line voltage) wiring.
For normal installations, use moisture-resistant No. 14
wire suitable for at least 194°F (90°C).
For high temperature installations, use moisture
resistant No. 14 wire, selected for a temperature rating
above the maximum operating temperature, for all but
the ignition and flame detector F leadwires.
a. For the ignition, use Honeywell specification
no. R1061012 Ignition Cable or equivalent. This
wire is rated at 350°F (177°C) for continuous
duty, and up to 500°F (260°C) for intermittent
use. It has been tested to 25,000 volts.
b. For the flame detector F leadwire, use Honeywell
specification no. R1298020 or equivalent. This
wire is rated up to 400°F (204°C) for continuous
duty. It is tested for operation up to 600 volts and
breakdown up to 7500 volts.
IMPORTANT
Do not run high voltage ignition transformer wires in
the same conduit with the flame detector wiring.
For ignition installations in a contaminating
environment, use Honeywell specification no. R1239001
High Tension Ignition Cable or equivalent. This wire is
very resistant to severe conditions of oil, heat, and
corona, and is tested to withstand high voltages up to
2