F-35-61H
February 2024
1
FEATURES
• Safe start with DETECT-A-FLAME
®
flame sensing
technology
• Custom pre-purge and inter-purge timings*
• Inducer blower control and airflow switch monitoring
• Single or three trials for ignition
• System diagnostic LED
• Flame current test points
• Local or remote flame sensing
• Automatic reset**
• True Alarm output or NC (Normally Closed Contact)
available
• Meets 60730-2-5 Harmonized Standard
APPLICATIONS
• Gas furnaces
• Boilers
• Commercial cooking
• Water heaters
• Other gas-fired appliances
DESCRIPTION
The 35-61 is a 24 VAC direct spark ignition (DSI) control
designed for use in all types of gas-fired appliances. The control
uses a microprocessor to continually and safely monitor, analyze
and control the proper operation of a gas burner and inducer
blower. A diagnostic LED and optional UART communications
make troubleshooting easy and ensures safe and efficient
operation.
The optional UART communications offers advanced diagnostic
data and connectivity with the Fenwal ConnectedControl series
05-50 Wi-Fi device.
Export Information (USA)
Jurisdiction: EAR
ECCN: EAR99
Agency Certifications
SPECIFICATIONS
C22.2 No.0:20
ANSI Z21.20-2014
CAN/CSA C22.2 No. 60730-1:13
RoHS Compliant
Input Power Control: 18-30 VAC 50/60Hz
(Class 2 transformer)
Line Voltage 120 or 240 VAC 50/60 Hz
(L1 & IND contacts only)
Input Current 300 mA @24 VAC with gas valve and
inducer blower relays energized (con-
trol only)
Gas Valve 2.0A max @ 24 VAC
Inducer Blower 3.0 FLA @ 120 VAC (6.0 LRA)
1.5 FLA @ 240 VAC (3.0 LRA)
1/4 H.P. Motor
Operating Temperature -40°F to +176°F
(-40°C to +80°C)
Storage Temperature -40°F to +185°F
(-40°C to +85°C)
Flame Sensitivity
0.7
µA minimum
Flame Failure Response 0.8 seconds maximum
Gas Types Natural, LP, or manufactured
Spark Rate: 50/60 sparks/sec
Size (LxWxH)
with enclosure
5.69 x 3.94 x 1.87 inches
(14.45 x 10.01 x 4.75 cm)
Moisture Resistance Conformal coated to operate non-
condensing to 95% R.H. Module
should not be exposed to water
Ingress Protection Not rated, protection provided by
appliance in which it is installed
Tries for Ignition One or three try versions available
Trial for Ignition Periods 4, 7, 10, 15 seconds available
Pre-purge and
Inter-purge Timings
0, 15 or 30 seconds available
Post-purge Time 0, 30 or 60 seconds available
Ignition Method Sparking pulses 600 mS On,
400 mS Off
Communications Optional UART communication
SERIES 35-61 - 60730-2-5 Compliant
24 VAC Microprocessor-Based Direct Spark Ignition
Control with Inducer Blower Relay
To Next Page
Need help?
General
