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60-2035—9
RA890G
SPECIFICATIONS • INSTALLATION
®
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
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 re-
main 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 detec-
tion 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 op-
eration as provided in these instructions.
CAUTION
1. Disconnect power supply before beginning in-
stallation to prevent electrical shock and equip-
ment damage. All wiring must comply with ap-
plicable 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.
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 elec-
tronic 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.
Fig. 1—Mounting Subbase. in in. (mm)
M8681
HORIZONTAL
VERTICAL
2-7/8
(73.0)
4-1/8 (104.8)
KNOCKOUTS (9) FOR
1/2 IN. (13) CONDUIT
45 DEGREES
MAXIMUM LEAN
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.
Summary of Contents for RA890G
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