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SERIES 35-70
120 VAC Microprocessor-Based
Direct Spark Ignition Control
FEATURES
•
Safe start with DETECT-A-FLAME
technology
•
Custom pre-purge and inter-purge timings
•
Single or three trials for ignition
•
System diagnostic LED
•
Flame current test points
•
Local or remote flame sensing
•
Automatic reset
•
Alarm output (normally closed contact)
•
Open board, potted or enclosure
•
Polarity insensitive flame sensing
APPLICATIONS
•
Commercial cooking
•
Crop dryers
•
Infrared burners
•
Construction and agriculture heaters
•
Other gas-fired appliances
DESCRIPTION
The 35-70 is a 120 VAC direct spark ignition (DSI) control
designed for use in all types of gas-fired appliances. The control
uses a microprocessor circuit to provide precise, repeatable
timing and operating sequences. On-board diagnostics with LED
output makes troubleshooting easy and ensures safe and
efficient operation.
Export Information (USA)
Jurisdiction: EAR
ECCN: EAR99
Agency Certifications
Recognized under the UL component program, UL
R
372. Software certified to ANSI/UL 1998. UL File
MH8817
Design Certified to ANSI Z21.20,
CAN/CSA C22.2 No. 199-M89
FM Approved as both an ignition device and a flame
safeguard. Restricted to single try models without 1
hour reset. TFI time must be 15 seconds or less.
®
flame sensing
SPECIFICATIONS
Input Power
Input Current
Gas Valve
Operating Temperature
Storage Temperature
Flame Sensitivity
Flame Failure Response
Flame Detector Self-check
Rate
Gas Types
Spark Rate:
Remote
Local
Size (LxWxH)
with enclosure
Moisture Resistance
Ingress Protection
Tries for Ignition
Trial for Ignition Periods
Pre-purge and Inter-purge
Timings
November 2015
102 to 138 VAC, 50/60 Hz
350 mA @120 VAC with gas valve
relay energized (control only)
1.5A max @ 120 VAC
-40°F to +175°F
(-40°C to +80°C)
-40°F to +185°F
(-40°C to +85°C)
µ
1.0
A minimum
0.8 seconds maximum
Once per second minimum
Natural, LP, or manufactured
50/60 sparks/sec
25/30 sparks/sec
5.11 x 3.55 x 2.00 inches
(12.98 x 9.02 x 5.08 cm)
Conformal coated to operate non-
condensing to 95% R.H. Module
should not be exposed to water
Not rated, protection provided by
appliance in which it is installed
One or three try versions available
4, 7, 10, 15 seconds available
0, 5, 15 or 30 seconds available
F-35-70
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Related Manuals for Fenwal 35-70 Series
Summary of Contents for Fenwal 35-70 Series
- Page 1 SERIES 35-70 120 VAC Microprocessor-Based Direct Spark Ignition Control F-35-70 November 2015 FEATURES ® • Safe start with DETECT-A-FLAME flame sensing technology • Custom pre-purge and inter-purge timings • Single or three trials for ignition • System diagnostic LED • Flame current test points •...
- Page 2 SEQUENCE OF OPERATION / FLAME Lockout Recovery RECOVERY / SAFETY LOCKOUT Recovery from lockout requires a manual reset by either resetting the thermostat, or removing 120 VAC for a period of 5 seconds. On models with automatic reset, if the thermostat is Start Up - Heat Mode still calling for heat after one hour, then the control will When a call for heat is received from the thermostat supplying...
- Page 3 Wiring and initial operation must be WARNING performed by a qualified service technician. Figure 2. Remote Sense Operation outside specifications could result in failure of the Fenwal product and other equipment with potential for injury to people and WARNING property. Figure 3. Multi-Pin Layout...
- Page 4 TROUBLESHOOTING Proper Electrode Location Proper location of electrode assembly is important for optimum Troubleshooting Guide system performance. The electrode assembly should be located so that the tips are inside the flame envelope and about 1/2-inch Symptom Recommended Actions (1.2 cm) above the base of the flame as shown: 1.
- Page 5 DIMENSIONS Figure 4. Enclosure Figure 5. Potted Figure 6. Integral Standoff Note: All dimensions are in inches F-35-70 Effective: November 2015...
- Page 6 All other trademarks are the property of their respective owners. Fenwal Controls, Kidde-Fenwal Inc. This literature is provided for informational purposes only. 400 Main Street KIDDE-FENWAL, INC. assumes no responsibility for the prod- Ashland, MA 01721 uct’s suitability for a particular application. The product must be Tel: 800-FENWAL-1 properly applied to work correctly.
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