SERIES 35-61
24 VAC Microprocessor Based Direct Spark
Ignition Control with Combustion Blower Relay
FEATURES
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24 VAC Microprocessor Based DSI Control
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System Diagnostic LED
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Automatic reset 1 hour after lockou
t
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Custom prepurge and interpurge timings
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Flame sense test pins
DESCRIPTION
The Series 35-61 is a 24 VAC Microprocessor Based Direct Spark
Ignition Control designed for use in all types of heating applications.
The control utilizes a microprocessor to continually and safely
monitor, analyze and control the proper operation of the gas burner.
Value added features such as combustion blower control, LED
diagnostics, automatic one hour reset, and flame current test pins
highlight the controls benefits.
®
35.61.02
Input Power
Control: 18-30 VAC 50/60 Hz
(Class 2 Transformer)
Line: 120/240 VAC
(L1, IND contacts only)
Input Current Drain
300 mA @ 24 VAC, combustion
blower relay and gas valve relay
energized (control only)
Gas Valve Rating
2.0A @ 24 VAC
Combustion Blower
3.0 FLA @ 120 VAC (6.0 LRA)
Rating
1.5 FLA @ 240 VAC (3.0 LRA)
1/4 H.P. Motor
Operating Temperature
-40ºF to +160ºF
-40ºC to +71ºC
Flame Sensitivity
.7µA minimum
Spark Rate
Line frequency (50/60 sparks/ sec.)
Enclosure
Gray (Noryl N-190) fire
retardent plastic
Moisture Resistance
Conformal coated to operate
to 95% R.H. Care must be
taken to protect module from
direct exposure to water
Tries for Ignition
One or three try versions
available
Trial for Ignition Periods
4.0,7.0,10.0, or 15.0 seconds
available
Prepurge & Interpurge
None, 15, or 30 seconds
depending on model. Without
prepurge there is a 3.5
second delay before the first
try for ignition.
SPECIFICATIONS
APPLICATIONS
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Gas Furnaces
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Boilers
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Water Heaters
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Other Similar Appliances
Agency Certifications
Software conforms to UL 1998 requirements
Design certified to ANSI Z21.20, CAN/CSA C22.2
No. 199-M89
35-61, 24 VAC DSI Control with Blower Relay
Page 1
www.fenwalcontrols.com
1-800-FENWAL-1
