Honeywell Eclipse Instruction Manual

CONTENTS
SAFETY
Please read and keep in a safe place
Please read through these instructions carefully before
installing or operating. Following the installation, pass the instructions
on to the operator. This unit must be installed and commissioned
in accordance with the regulations and standards in force. These
instructions can also be found at www.docuthek.com.
Explanation of symbols
1, 2, 3, a,b, c = Action
➔= Instruction
Liability
We will not be held liable for damage resulting from non-observance
of the instructions and non-compliant use.
Safety instructions
Information that is relevant for safety is indicated in the instructions
as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified gas techni-
cians. Electrical interventions may only be carried out by qualified
electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM spare parts.
Disclaimer Notice
In accordance with the manufacture’s policy of continual product
improvement, the product presented in this brochure is subject to
change without notice or obligation.
The material in this manual is believed adequate for the intended
use of the product. If the product is used for purposes other than
those specified herein, confirmation of validity and suitability must
be obtained. Honeywell-Eclipse warrants that the product itself does
not infringe upon any United States patents. No further warranty is
expressed or implied.
EN – www.docuthek.com
Installing flame monitoring equipment on
Eclipse burners
Safety ........................................1
Product description..............................2
Installation .....................................2
Wiring ........................................3
Troublelshooting ................................3
OPERATING INSTRUCTIONS
Version · Edition 12.20 · 32-00267-01 · EN

Flame Safety, Ignition Components · Edition 12.20
EN-2
Liability and Warranty
We have made every effort to make this manual as accurate and
complete as possible. Should you find errors or omissions, please
bring them to our attention so that we may correct them. In this way
we hope to improve our product documentation for the benefit of
our customers. Please send your corrections and comments to our
Marketing Communications Manager.
It must be understood that Honeywell’s liability for its product, whether
due to breach of warranty, negligence, strict liability, or otherwise is
limited to the furnishing of replacement parts and Honeywell-Eclipse
will not be liable for any other injury, loss, damage or expenses,
whether direct or consequential, including but not limited to loss of
use, income, or damage to material arising in connection with the
sale, installation, use of, inability to use, or the repair or replacement
of Honeywell-Eclipse’s products.
Any operation expressly prohibited in this manual, any adjustment,
or assembly procedures not recommended or authorized in these
instructions shall void the warranty.
Safety
CAUTION
This operating instruction contains recommendations and
tips on the proper use of flame monitoring equipment. Please
also observe all instructions and notes in the burner operating
instruction!
The contents of this Information Guide are not intended to supersede
any information or installation recommendations provided by man-
ufacturers of flame monitoring equipment. If they appear to conflict,
contact the Eclipse factory and/or the flame monitor manufacturer
for clarification.
Flame monitoring equipment is widely accepted as a way to en-
hance the operating safety of combustion equipment. To maintain
that degree of safety and to avoid lost production due to nuisance
shutdowns, use care and common sense in installing and maintaining
that equipment.
PRODUCT DESCRIPTION
Thermocouples (Heat-Actuated Detectors)
When heated, thermocouples generate a millivolt signal which can
be used to actuate fuel shutoff valves.
They are not allowed on industrial combustion equipment covered
by NFPA Standard 86 and have limited acceptance under European
standard EN746-2.
Thermocouple flame detectors are typically used on small listed
combustion appliances.
Eclipse does not recommend the use of heat actuated detectors
on its burners.
Photocells
These detectors employ a light-sensitive cell that sends a signal
when it sees a flame.
Photocells must be used in dark chambers with bright flames and
may not see the translucent blue flame of some gas burners.
Eclipse does not recommend the use of photocells for flame detec-
tion on its burners.
Lead Sulfide (PbS)
Lead sulfide cells are sensitive to infrared radiation. When present in
sufficient strength, this radiation will cause the cell to close the circuit
to the automatic fuel shutoff valve.
There have been instances where lead sulfide cells have been "fooled"
by infrared radiation from hot refractory surfaces, even when no flame
is present. Certain controllers use circuitry to detect only the flickering
infrared radiation from the flame and ignore the steady state radiation
from the refractory. However, vibration and swirling contaminants
in the sighting path may still send a signal when there is no flame.
Eclipse does not recommend the use of Lead Sulfide for flame de-
tection on its burners.
Flame Rods
Flame rods operate on the rectification principle. Flames contain ions
capable of conducting electrical current. An AC voltage on the flame
rod will conduct current through the flame to a grounding surface,
usually the metal parts of the burner. The signal will be rectified to
DC with a 4 to 1 ratio of surface areas of the burner ground and
flame rod that are in contact with the flame. On receipt of the DC
signal, the controller will send power to keep the automatic fuel
shutoff valves open. If the flame rod shorts to ground, then the DC
signal is lost and the resulting AC signal is rejected by the controller
and the shutoff valves are closed. Because of this action, flame rods
with appropriate flame safeguard controllers are considered fail safe.
Unless the burner manufacturer’s literature states otherwise, use flame
rods only on gas burners, not oil burners. The rods may accumulate
soot, or oil film, causing nuisance shutdowns.
Flame rods will work properly only if you maintain a predetermined
ratio of rod surface area to burner grounding area in contact with the
flame. Consequently, observe the flame rod length recommendations
published for various burners.
Ultraviolet (UV) Scanners
UV scanners pass electrical current pulses where they see ultraviolet
radiation, which is present in gas and oil flames. They are much less
susceptible than photocells or lead sulfide cells to being "fooled" by
stray radiation from hot refractories or other sources.
The UV scanner uses a tube made of quartz or other special glass
that is transparent to UV radiation and may be damaged with rough
handling. Any type of lens or window used with UV scanners cannot
be made of standard glass. Soot, steam and unburned hydrocarbons
can also absorb UV radiation and weaken the flame signal. Most
tubes are designed to respond only to certain UV wavelengths from
the flame and not from sunlight.
Eclipse recommends use of UV tubes that are solar blind.
UV scanner brands must not be mixed between manufacturers of the
flame safeguards. A scanner and its particular tube are matched to
the controller and approved by agencies for use together. Only use
scanners that are specifically recommended for use with the controller.
INSTALLATION
Install the flame detector in the burner connections specified by
the burner documentation. These connections provide the proper
location for sighting both the pilot and main flames.
Flame rod
1 Check the flame rod electrode to make sure it is the length rec-
ommended for the burner and is not bent, kinked, or twisted.
2 Inspect the rod insulator. It should not be cracked or chipped.
3 Screw the flame rod directly into the burner’s threaded connection.
If the thread sizes differ, use a reducing bushing to make them
match. Avoid adaptors made of pipe couplings and nipples - they
may change the insertion length of the flame rod below that re-
quired for a strong flame signal.
➔Do not overtighten the rod in the burner connection, or you may
crack its insulator.
➔
Also make sure that the flame electrode doesn’t touch any of
the burner parts.
UV Scanner
1 Mount the scanner to the burner connection using an Eclipse
Scanner Adapter (Bulletin 836), Heat Block Seal (Bulletin 834) or
pipe fittings.
➔ Do not use pipe or fittings of any size smaller than the smaller
of the two thread connections, or weak flame signals will result.
2 Install the scanner as close to the burner as temperature conditions
permit. This ensures the best possible field of view for the scan-
ner.
3 Make sure the scanner mounting nut is screwed snugly onto the
adapter thread and that the scanner nut gasket (if furnished) is in
place. Loose-fitting scanners may tilt on their adaptors, causing
them to sight at the wrong angle.

Flame Safety, Ignition Components · Edition 12.20
EN-3
➔Do not allow the scanner to operate at temperatures above the
manufacturer’s published limit. Scanners can be overheated by
high ambient temperatures, heat conducted and radiated from
burner and furnace surfaces, or a combination of the two.
➔ On most installations, scanners can be kept cool by purge air
blown into the scanner adaptor
Adjustable
Orifice
UV Scanner
Scanner
Adapter
Tubing
Connect Purge
Air Line to Burner
Air Housing Tap or
Combustion Air Line
(DO NOT connect to a preheated air line.)
Cooling the UV Scanner
Eclipse UV scanner adaptors and Heat Block Seals include tapped
connections for purge lines. The adjustable orifice cock in Figure
"Cooling the UV Scanner" permits setting the purge air at the opti-
mum flow rate.
On some burners, the scanner connection sights through the length
of the combustion air housing. The cold combustion air should suf-
fice to keep the scanner cool, so no additional purge air is required.
Preheated air burners pose a special problem, because the larger
amount of heat conducted and radiated from the burner can easily
overheat the scanner.
➔ Always use a Heat Block Seal such as Eclipe’s HBS on pre-
heated air burners. These adaptors include a quartz lense and
a non-metallic insulating nipple to reduce the heat conducted
back to the scanner.
➔Cool purge air will probably also be required.
➔ In extreme cases, even these measures may not be sufficient, and
it may be necessary to use a radiation shield or to blow cooling
air over the scanner.
WIRING
CAUTION
Installation and trouble-shooting of flame supervisory circuits
should be done by qualified electricians, technicians or engineers
experienced in all facets of this type of control equipment.
Electrical wiring compliances
➔
All the electrical wiring must comply with all applicable local codes
and/or standards such as NFPA Standard 70, IEC60364, CSA
C22, BS7671 and be acceptable to the local authority having
jurisdiction.
Handling flame supervisory components
➔Exercise extreme caution in handling all flame supervisory com-
ponents. Many parts of the system operate at high voltage and
pose an electrocution hazard.
Follow manufacturer’s recommendations
Follow the flame detector manufacturer’s recommendations regarding
wire gauges, insulation grades and line lengths.
Wire type and length may weaken signal strength due to capacitive
coupling to ground.
On some installations, the wiring and its conduit may be exposed
to higher-than-normal temperatures. In these cases, use wiring with
high temperature insulation.
Wiring Splices
1 Make as few wiring splices as possible between the detector and
its relay, as each splice is a potential source of current leakage
or grounding.
2 Make sure the bare wire ends at each splice are clean and not
oxidized. Secure splices with twist or crimp connectors, and tape,
if necessary, to ensure that no bare metal is exposed.
3 Make sure the connectors and tape are rated for the temperature
at the splice location.
CAUTION
Use Caution regarding wires through boxes!
– Take care not to cut or nick the wires when pulling them
through conduit or junction boxes.
Wires from Several Flame Detectors
➔
Wires from several flame detectors may be run together in a
common conduit, but do not place them in the same conduit with
high voltage ignition wires. Some manufacturers permit detector
lead wires in the same conduit as 120 VAC control wiring, but
may limit the length of run in a shared conduit. For longer runs,
separate conduits are required.
➔
Also, long runs may require shielding to prevent cross interference
and inducing a false signal onto a wire of a detector with no flame
from a detector wire that is sensing a flame.
➔Make sure that you connect the flame sensor of a burner to the
electrical circuit of that burner.
Grounding
1 Make sure the flame relay is properly grounded.
2 UV scanners generally require grounding as well - this can be
done through the burner.
➔However, if the scanner is mounted on a Heat Block Seal using
a non-metallic nipple, there will not be a ground connection to
the burner. Likewise, do not use non-conducting pipe dope on
scanner or adaptor threads.
➔Likewise, do not use non-conducting pipe dope on scanner or
adaptor threads.
Spark Interference
Electric spark ignition produces strong ultraviolet radiation. A UV
scanner can detect this radiation on some burners, either by direct
line of sight or by reflections from burner parts. Test the effect of
the ignition system on the flame signal and control sequence both
without and with flow of fuel to the burner. Flame rod signals can also
be affected due to electrical interference and sharing of the ground
connections. The signal may be increased, decreased or very erratic
while the ignition is on.
The following steps may help reduce spark interference:
1 Separate or shield the detector wiring from the ignition wiring.
2 Ensure proper grounding of the ignition transformer to burner
housing.
3 Reverse the wires feeding the primary to the ignition transformer.
4 Check for proper spark gap.
5 Clean, repair or replace faulty wiring and connectors.
6 Move the location of the ignition transformer.
7 Block UV scanner sighting with an orifice adapter.
8 Use a half-wave ignition transformer.
TROUBLELSHOOTING
Refer to the product literature for the specific type of flame supervising
equipment in use. In addition, check that the installation was made
according to the recommendations in this operating instruction.

Flame Safety, Ignition Components · Edition 12.20
EN-4
© 2020 Eclipse Inc. We reserve the right to make technical modifications in the interests of progress.
The Honeywell Thermal Solutions family of products includes Honeywell
Combustion Safety, Eclipse, Exothermics, Hauck, Kromschröder and
Maxon. To learn more about our products, visit ThermalSolutions.
honeywell.com or contact your Honeywell Sales Engineer.
Eclipse Inc.
1665 Elmwood Rd. · Rockford, IL 61103
United States
www.eclipsenet.com
ThermalSolutions.honeywell.com
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