FEATURES
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Combustion blower output
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Proven pressure switch input
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24/120/240 VAC hot surface ignitor models available
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ASME CSD-1 compatible models available (consult factory)
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Pre-purge and lockout indicator outputs
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Non-volatile lockout option
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Diagnostic LED and remote LED connection
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Multiple trials for ignition
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Thermostat, pushbutton or remote reset
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Full-time flame sensing
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Remote flame sensor option
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Flame current test pins
APPLICATIONS
Commercial and industrial appliances with combustion
chambers in excess of 400K BTU. Applications requiring
CSD-1 certification.
DESCRIPTION
The Series 35-67 is a hot surface ignition system in which
the ignition source is proven to be capable of ignition prior to
the gas valve being opened and is suitable for appliances over
400K BTU. Models compatible to the requirements of ASME
standard CSD-1 are available.
The microprocessor circuit design provides precise, repeatable
timing sequences for ignition times and purge times (pre-, inter-,
and post-) as well as multiple tries for ignition. The control also
continuously monitors the pressure switch, thermostat and main
burner flame to ensure safe system operation. On-board diagnostics
with LED output provide assistance with troubleshooting to ensure
safe and efficient burner operation.
Agency Certifications
Design certified by CSA International to CAN C22.2 #199-M89 and
ANSI Z21.20 for Automatic Ignition Systems, including UL1998
Software Review.
Special models approved to EN298:2003 available upon request.
SERIES 35-67
24 VAC Microprocessor Based Proven HSI Control
with Combustion Blower Relay
SPECIFICATIONS
www.fenwalcontrols.com
1-800-FENWAL-1
Series 35-67, 24 VAC Hot Surface Ignition Control
Page 1
INPUT VOLTAGES
Control
18 to 30 VAC, 400mA max
(not including gas valve)
Line (L1 & L2 to Ignitor)
120 VAC standard, 24 VAC and 240 VAC
models available
Thermostat
18 to 30 VAC 30mA max (not incl. Gas Valve)
Pressure Switch (Airflow)
18 to 30 VAC 25mA max
OUTPUT RATINGS
Combustion Blower
15A max (0.6 pf) or 1/2 HP @ 120 or 240 VAC
Hot Surface Ignitor
5.0A max @ 24, 120 or 240 VAC
Gas Valve Rating
5.0A max (0.6 pf) @ 24 VAC
Lockout & Pre-Purge Indicators
1.0A max @ 24 VAC
OPERATING TEMPERATURE
-40ºF to +165ºF (-40ºC to +73ºC)
FLAME SENSITIVITY
1.0 micro Amp minimum
FLAME FAILURE
0.8 seconds max
RESPONSE TIME
TYPES OF GAS
Natural, LP, or manufactured
ENCLOSURE
Gray (Noryl N-190)
MOISTURE RESISTANCE
Conformal coated to operate non-condensing
to 95% R.H. Care must be taken to protect
module from direct exposure to water
SIZE WITH ENCLOSURE
See Figures 6 & 7
WEIGHT
8oz including options and cover
35.67.03
®
