3
60-2034—7
RA890F
SPECIFICATIONS
NOTE: Allowable inrush can be up to ten times the pilot
duty rating.
EXAMPLE: Pilot duty rating = 25 VA.
At 120V, running current is 25 = 0.21A.
Maximum allowable inrush is 10 times 0.21 = 2.1A.
Maximum Power Interruption: 12 milliseconds; longer
interruption causes 1K to drop out; burner shuts down.
After a short delay for component check, burner should
restart and operate normally.
FLAME FAILURE RESPONSE TIME: 0.8 seconds or
3 seconds nominal, as ordered. Three second response is
recommended for nonrecycling ignition cutoff service to
prevent nuisance shutdowns.
FLAME DETECTORS: Flame rod, rectifying photocell, or
C7012A,C Ultraviolet Flame Detector.
AMBIENT TEMPERATURE RATINGS:
Minimum:
RECYCLE TIME: Occurs immediately when flame loss
recognized. See Flame Failure Response Time.
THERMISTOR DELAY OF LOAD RELAY PULL-IN:
4 seconds nominal. Voltage level and ambient tempera-
ture affects delay time. Actual delay may be 2 to 30 sec-
onds under ambient temperature extremes. Fast thermistor
model with 1 sec nominal delay time is available when
long delay is a problem. Fast delay model is available
only with the following specifications: 120V, 50/60 Hz,
15 sec safety switch, 0.8 flame response timing, for use
with flame rod detector only.
ALARM CONTACTS (Optional): Isolated spdt contacts.
Male quick-connect terminals (female quick-connects
included). See rating above.
DIMENSIONS: Approximately 5 x 5 x 5 in. (127 x 127 x
127 mm) including subbase.
MOUNTING: On Q270A Universal Mounting Base or-
dered separately.
APPROVALS: Underwriters Laboratories Inc Listed: 120V,
models only; File No. MP268, Guide No. MCCZ.
NOTE: All devices meeting UL components recognition
have the following symbol:
Replacement exchange controls that meet current UL
requirements are identified with the term REMFR’D
following the listing or component recognition mark.
Canadian Standards Association Certified: 120V models
only; File No. LR1620.
Factory Mutual Approved: Report No. 17678, 19417,
and 19784.
American Gas Association Design Certified for -20
°
F
(-29
°
C): Certificate No. 20-AL.
ACCESSORIES:
W136A Microammeter (includes 196146 Plug).
121708 Flame Simulator.
196146 Meter Connector Plug.
FSP1535 Tester for operational check of all RA890s.
Q270A1024 Mounting Subbase serves as junction box to
connect to external circuits. Q270A contains terminal
blocks with coded terminals and screws.
R482F Relay to provide safe-start checks when RA890F
is used in special standing pilot applications.
13891L Cover Assembly with reset button. 120 Vac model.
118702E Remote Reset Cover.
Maximum:
50 Hz
60 Hz
Model
°
F
°
C
°
F
°
C
Without alarm contacts
115
46
125
52
With alarm contacts
105
41
115
46
Models with 30 second safety switch operate safely at
temperatures to -30
°
F (-34
°
C) but may encounter difficulty
when resetting a tripped safety switch below the rated
temperature.
SAFETY SWITCH TIMING (LOCKOUT TIME): 15 or
30 seconds as ordered. Timings are proportional with
input voltages and temperatures. For RA890s that are
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) is allowed to be as high as 50 seconds.
FLAME ESTABLISHING PERIOD:
Models with 15 sec Safety Switch: Up to 15 sec.
Models with 30 sec Safety Switch: Up to 30 sec.
Model
°
F
°
C
15 sec safety switch
-20
-29
30 sec safety switch
+10
-12