Honeywell RA890G User Manual
RA890G
Protectorelay™ Primary Control
The RA890G Protectorelay™ control provides
solid state electronic safeguard protection for industrial and commercial gas, oil, or combination
gas-oil burners.
■ Designed for interrupted ignition with intermittent
pilot for gas burners, and for interrupted or intermittent ignition on oil burners.
■ Used only with a C7027, C7035, or C7044 Minipeeper Ultraviolet Flame Detector.
■ Either a line voltage or low voltage controller can
be used.
■ Solid state circuitry eliminates warmup and increases resistance to vibration.
■ Push-to-reset safety switch button is in dust-resistant enclosure.
■ Safe start check prevents start if flame or flame
simulating failure is present.
■ Automatic safety switch lockout if flame fails on
start or if flame is not re-established after a flame
failure.
■ When limit control opens, control de-energizes
ignition and fuel valves, but safety switch lockout
will not occur.
■ Test jack permits readings of flame signal.
■ Easy mounting and removal through use of captive
mounting screws. Durable thermosplastic mounting base.
■ -40°F (-40°C) approved model available.
CONTENTS
Specifications ................................................. 2
Ordering Information ..................................... 2
Installation ..................................................... 3
Operation And Checkout ................................ 5
Service ............................................................8
Troubleshooting ............................................. 9
S.Y. • Rev. 1-95 • ©Honeywell Inc. 1995
1 60-2035—9
60-2035-9
RA890G
SPECIFICATIONS • ORDERING INFORMATION
Specifications
TRADELINE® MODELS
TRADELINE® models are selected and packaged to pro-
vide ease of stocking, ease of handling, and maximum
replacement value. TRADELINE® model specifications
are the same for standard models except as noted below.
TRADELINE® MODELS AVAILABLE: RA890G
Protectorelay™ Primary Control—120 Vac, 50/60 Hz.
STANDARD MODELS
MODEL: RA890G Protectorelay™ Primary Control.
VOLTAGE AND FREQUENCY: 120V, 208V, 220V, 240V;
50/60 Hz models.
VOLT-AMPERE RATING:
60 Hz: 14 VA maximum, 12 VA standby.
50 Hz: 18 VA maximum, 17 VA standby.
POWER CONSUMPTION:
60 Hz: 9.5W maximum, 3W standby.
50 Hz:10W maximum, 4W standby.
FLAME FAILURE RESPONSE TIME: 0.8 or 3 seconds
(nominal; separate models). 3 second response time recommended for nonrecycling cutoff system.
FLAME ESTABLISHING PERIOD: Up to 15 seconds
(nominal).
RECYCLE TIME: Occurs immediately when flame loss is
recognized. See Flame Failure Response Time.
SAFETY SWITCH TIMING (LOCKOUT TIMING): 15 sec-
onds. Timings are proportional with input voltages and
temperatures. For RA890 classified in Underwriters Laboratories Inc gas groups 6 and 6a and oil group 8, the
maximum safety switch timing with voltages ranging
from 70 to 110 percent of rated voltage and with ambients
ranging from 32°F (0°C) to 115°F (66°C) are allowed to
be as high as 50 seconds.
DIMENSIONS (Including Subbase): Approximately 5 x 5
x 5 (127 x 127 x 122 mm).
AMBIENT TEMPERATURE RATING:
MINIMUM: Models with 15 second safety switch:
-20°F (-29°C).
MAXIMUM: Models without alarm contacts:
50 Hz: 115°F, 46°C.
60 Hz: 125°F, 52°C.
Models with alarm contacts:
50 Hz: 105°F, 41°C.
60 Hz: 115°F, 46°C.
ALARM CONTACTS (Optional): Isolated spdt contacts.
Alarm terminals are male quick-connects (female quickconnects included for field installation). See rating above.
FLAME DETECTOR: C7027, C7035 or C7044 Ultraviolet
Flame Detector.
MOUNTING: Q270A Universal Mounting Base (ordered
separately).
ELECTRICAL RATINGS:
120
Terminal Electrical Load
3 Burner
Motor
4 Ignition
5 Main Valve (Pilot Duty) 125VA 125VA
Alternate Rating: 25 VA pilot duty plus one or
more motorized valves with total rating of 400
VA opening, 200 VA holding.
a
If ignition and motor are connected to terminal 3, terminal
Full Load 5.2A 2.6A
Locked Rotor 31.2A 15.6A
a
Ignition
Pilot Fuel Valve 25VA 25VA
a
Vac
3.0A 1.5A
3.0A 1.5A
240
Vac
4 cannot be used. This prevents overloading relay 1K.
Alarm Contacts: 3.0 A at 24 Vac, or 75 VA pilot duty at
120 Vac in suitable wiring enclosure.
Low Voltage Control Circuit (T-T): 0.17A.
NOTE: Allowable inrush can be up to ten times the pilot duty
rating.
Ordering Information
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the Tradeline
Catalog or price sheets for complete ordering number, or specify—
1. Order number specify TRADELINE®, if desired. 4. Alarm contacts, if desired.
2. Voltage and frequency. 5. Accessories, if desired.
3. Flame response time.
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:
1. Your local Home and Building Control Sales Office (please check the white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and
Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico,
Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
60-2035—9 2
RA890G
SPECIFICATIONS • INSTALLATION
EXAMPLE: Pilot duty rating = 25 VA.
At 120V, running current is 25 ÷ 20 = 0.21A.
Maximum allowable inrush is10 times 0.21 = 2.1A.
UNDERWRITERS LABORATORIES INC LISTED: 120V
models only: File no. MP268, Guide no. MCCZ.
NOTE:All devices meeting UL component recognition
bear the following symbol:
®
Canadian Standards Associated Certified: 120 V models
only: File no. LR9S329
Factory Mutual Approved: Report no. 22013.
CAUTION
Ultraviolet sensing tubes have a life expectancy
of 40,000 hours of continuous use within the
ambient temperature and voltage ratings. Worn
out ultraviolet sensing tubes result in failure of the
sensing tube to properly discriminate between
flame conditions.
Systems using the RA890G with the C7027,
C7035 and C7044 Flame Detectors should only be
used on burners that cycle On and Off at least once
every 24 hours. Appliances with burners that remain on for 24 hours continuously or longer should
use the C7012E Flame Detector with the R7247C
Amplifier or the C7076A Flame Detector with the
R7476A Amplifier as the ultraviolet flame detection system.
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 safequard
control technician.
4. After installation is complete, check out product operation as provided in these instructions.
American Gas Association Design Certified For -20°F
(-29°C). Certificate no. 20-6b.
ACCESSORIES:
Models with 15 second safety switch: -20F (-29°C).
W136A Microammeter.
123514B Flame Simulator.
196146 Meter Connector Plug.
FSP1535 Test Panel: For operational check of the
RA890E,F,G,H,J or the R4795.
118702E Remote Reset Cover Assembly.
202471A Cover Assembly with reset button.
Installation
Follow the burner manufacturer instructions when sup-
plied; otherwise, proceed as follows.
LOCATION
Temperature
Install the RA890G where the surrounding temperatures
remain within the ambient Operating Temperature Ratings
listed in the SPECIFICATIONS section.
Humidity
Install the RA890G where the relative humidity never
reaches the saturation point. Condensation of moisture on
the RA890G may cause enough leakage to short the flame
signal to ground and prevent the burner from starting.
Vibration
Do not install the RA890G where it could be subject to
excessive vibration. Vibration shortens the life of the electronic components.
Weather
The RA890G is not designed to be weathertight. If it is
installed outdoors, use a suitable weathertight enclosure.
MOUNT SUBBASE
Locate subbase where ambient temperature is within the
specified rating.
Mount the subbase so that the top and bottom are hori-
zontal and the back is vertical. The subbase may lean
backward as much as 45 degrees if necessary. See Fig. 1.
CAUTION
1. Disconnect power supply before beginning installation to prevent electrical shock and equipment damage. All wiring must comply with applicable local electrical codes, ordinances, and
regulations.
2. Limits must be rated to carry and break current to
the ignition transformer, pilot valve (or first stage
oil valve), and main fuel valve(s) simultaneously.
3. All external timers must be Listed or Component
Recognized by authorities that have jurisdiction
for the specific purposes for which they are used.
Fig. 1—Mounting Subbase. in in. (mm)
HORIZONTAL
4-1/8 (104.8)
VERTICAL
2-7/8
(73.0)
KNOCKOUTS (9) FOR
1/2 IN. (13) CONDUIT
45 DEGREES
MAXIMUM LEAN
M8681
3 60-2035—9
RA890G
M8718
L1
(HOT)
L2
1
2
3
4
3
3
2
4
4
1
FOR INTERMITTENT IGNITION, CONNECT TO TERMINAL 3.
ALARM TERMINALS OPTIONAL. IF LINE VOLTAGE ALARM IS USED.
RA890G MUST BE MOUNTED IN SUITABLE ENCLOSURE. ALARM
TERMINALS ARE ENERGIZED THROUGH THE RA890 SAFETY SWITCH.
ALARM IS NOT SOUNDED UNTIL THE SAFETY SWITCH TRIPS OUT.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
MAY USE LINE OR LOW VOLTAGE CONTROLLER. IF LINE VOLTAGE
CONTROLLER IS USED, CONNECT IT BETWEEN THE LIMIT CONTROL
AND TERMINAL 6. JUMPER T-T.
LINE VOLTAGE
CONTROLLER
MAIN GAS
VALVE
IGNITION
TRANSFORMER
PILOT
GAS VALVE
LOW VOLTAGE
CONTROLLER
BLUE
WHITE
6
T
T
F
G2
2
1
3
4
5
DISCONNECT
SWITCH
LINE OR
LOW VOLTAGE
NO ALARM
NC NO COM
USE TERMINALS
NC AND C FOR
NORMALLY
CLOSED ALARM
INDICATOR OR
INTERBLOCK
CIRCUIT IF
DESIRED.
LINE OR LOW VOLTAGE
ALARM POWER SUPPLY
POWER
SUPPLY
RA890G
MANUAL OR AUTO RESET
LOCKOUT LIMIT CONTROL
INSTALLATION
WIRING THE SUBBASE
IMPORTANT: When connecting wire to screw terminal of
terminal strip, wrap wire at least 3/4 of distance
around screw without overlapping. With appropriately sized screwdriver, tighten screw until wire is
snugly in contact with underside of screw and contact
plate. Tighten screw additional one-half turn. Do not
use push-type ratchet screwdriver.
YES NO NO NO NO
1. All wiring must comply with applicable electrical
codes, ordinances, and regulations. Use NEC Class 1 wiring.
2. For normal installations, use moisture-resistant
No. 14 wire (rated for 167°F (75°C) or higher required by
Underwriters Laboratories Inc).
3. For high temperature installations, use moisture-re-
sistant 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 (175°C) for continuous duty, and up to
500°F (260°C) for intermittent use. It was 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 (205°C) for continuous duty. It is
tested for operation up to 600 volts and breakdown up
to 7500 volts.)
4. For ignition installations in a contaminating environ-
ment, 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 25,000V rms in a salt
bath for one minute without breakdown. It is rated at 200°F
(93°C) for continuous duty, and up to 350°F (175°C) for
intermittent use.
IMPORTANT: Do not run high voltage ignition trans-
5. Refer to Fig. 2 and 3 for typical field wiring connections. Follow the burner manufacturer’s wiring diagram if
former wires in the same conduit with the flame
detector wiring.
provided.
60-2035—9 4
Fig. 2—Gas system with interrupted ignition.
M8717
APPLICATIONS
Either a line or low voltage controller can be used. If a
line voltage controller is used, connect it between the limit
control and terminal 6, and jumper T-T.
Refer to the appropriate flame detector instructions when
paralleling two flame detectors.
IMPORTANT: The C7027, C7035 and C7044 Flame De-
tector leads are color coded blue and white. The blue
lead must be connected to the F terminal and the white
lead to the G terminal. The circuit is dc and the UV
tube is polarity sensitive. Reversing the leads, even
momentarily, can damage or destroy the UV tube.
All wiring must be NEC Class 1 and conform to local
electrical codes, ordinances, and regulations. If the leadwires
are not long enough to reach the flame safeguard control,
splices must be made in a junction box.
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