Fenwal Controls 35-53CE Series User manual

F-35-53-CE
January 2020
1
Series 35-53CE
12 VDC Microprocessor Based
Direct Spark Ignition Control
FEATURES
• Combustion blower relay with post-purge
• System Diagnostic LED
• Single or Multiple tries for ignition (TFI)
• Multiple options for TFI, pre, inter, and post-purge timings
• Meets ANSI 60730-2-5 Harmonized Standards
• Remote or local flame sensing
• Standard Edge connector
• Integral Standoffs for mounting
• Available Manual Reset with Non-Volatile Lockout
APPLICATIONS
• Recreational Vehicles (including boats/marine)
– Furnace, Water Heaters
• Mobile Heating Equipment
– Agricultural Heaters
– Construction Equipment
• Process Heating and Flare Stacks
DESCRIPTION
The Model 35-53CE is a 12 VDC Microprocessor Based Direct
Spark Ignition Control designed for use in all types of heating
applications such as RV gas furnaces and other similar appli-
ances. The control uses 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, and multiple ignition tries highlight the control's bene-
fits. The integrated combustion blower version is fully backward
compatible with all previous Fenwal Controls 12 VDC controls
and competitive models. The control determines the unit con-
figuration at the start of the heating sequence and disables the
blower function if not required, allowing one part to address all
service or OEM needs.
Agency Certifications
EN298 CE 584099
Classification: BMRVXN
Mobile Applications: DC supply type A, B, & C.
Code Compliant to:
AS 4625 - 2008
AS 4622 - 2004
CAN/CSA E60730-1
ANSI Z21.20: CAN/CSA C22.2 No. 60730-2-5
Compliant with current RoHS standards
SPECIFICATIONS
Input Power Control: 9.2 to 15 VDC from a stor-
age battery or full wave
rectified unfiltered 50/60 Hz AC
Input Current < 5W, 300 mA @ 12 VDC,
combustion blower and gas valve
relays energized (control only)
Gas Valve 1.0A @ 12 VDC
Combustion Blower Rating 20.0A @ 12 VDC
Operating Temperature -40°F to + 176°F
(-40°C to +80°C)
Flame Sensitivity 0.7 μA minimum
Flame Failure Response Time 0.8 seconds maximum
Flame Failure Lockout Time Varies by model,
310 seconds maximum
Flame Detector Self-check Rate Once per second minimum
Gas Types Natural, LP, or manufactured
Spark Rate 16 sparks per second
Size (LxWxH) 4.25 x 3.25 x 1.50 inches
(10.80 x 8.25 x 3.81 cm)
Enclosure Uncovered with integral standoffs
Moisture Resistance Conformal coated to operate to
95% R.H. (Non-Condensing)
Always avoid direct exposure to
water.
Ingress Protection Not Rated, Protection provided by
appliance in which it is installed
Tries for Ignition One or Three
Trial for Ignition Periods 5, 7, 10, and 25 seconds
Pre-purge and Inter-purge
Timings
None, 15, or 25 seconds
depending on model.
Without pre-purge and full-time
power, there is a 2-second start-up
delay.
Post-purge Timings None, 45, 60, 90, 130, or 150 sec-
onds available

Effective: January 2020
2 F-35-53-CE
SEQUENCE OF OPERATION / FLAME
RECOVERY / SAFETY LOCKOUT
Power Up
During power up the LED shall briefly flash ON for around 1.2
seconds, then turn OFF to indicate normal operation.
Start-Up - Heat Mode
When a call for heat is received from the thermostat, 12 VDC to
TH, then control will begin a pre-purge delay. Following the pre-
purge period, the gas valve is energized and sparking com-
mences for the Trial for Ignition (TFI) period.
When flame is detected during the TFI, the sparking process is
terminated and the gas valve remains energized. The thermo-
stat and burner flame inputs are constantly monitored to assure
proper system operation. When the thermostat is satisfied and
the demand for heat ends, the gas valve is immediately de-
energized.
A post-purge delay ensures the unit is ready for the next call for
heat.
Failure to Light - Lockout
SINGLE TRIAL MODEL
Should the burner fail to light, or a flame is not detected during
the TFI period, the gas valve will de-energize and the control
will go into lockout. The diagnostic LED will indicate the fault
code for ignition lockout. (3 Flashes)
MULTI TRIAL MODEL
Should the burner fail to light or the flame is not detected
during the TFI period, the gas valve will de-energize. The con-
trol will then go through an inter-purge delay before an addi-
tional ignition attempt. The control attempts two additional
ignition trials before de-energizing the gas valve and entering
lockout. The diagnostic LED will indicate the fault code for igni-
tion lockout. (3 Flashes)
Flame Failure
FLAME FAILURE - RECYCLE MODE (Standard)
With the “Recycle after Loss of Flame” option, upon loss of
flame, the gas valve is de-energized and the control proceeds
to inter-purge before attempting to relight the flame. Multi-try
models permit three tries for ignition including inter-purges. If
the burner relights, normal operation resumes. If the burner
does not relight, the control will enter lockout.
FLAME FAILURE - RE-IGNITION MODE
If the established flame signal is lost while the burner is operat-
ing, the control will respond immediately energizing the H.V.
spark for the TFI period in an attempt to relight the flame. If
the burner does not light within the TFI, the gas valve will
immediately de-energize and single try models will enter lock-
out. On multi-try models, a new TFI sequence will begin after
an inter-purge delay. Multi-try models perform two additional
attempts to light the burner before de- energizing the gas valve
and entering lockout. If the burner relights, normal operation
resumes.
Combustion Airflow Faults
If the airflow signal is lost, or the hi-limit opens during heat
mode, the gas valve is immediately de-energized and the
blower stays on. If the switch closes again, a normal ignition
sequence will resume. If not and this condition persists for
more than five minutes, the control will enter lockout with the
blower off.
Lockout Recovery
Recovery from lockout requires a manual reset by either reset-
ting the thermostat, or removing power for a period of 5 sec-
onds. On models with non-volatile lockout, reset must be by
using the reset switch with 12VDC power maintained.

Effective: January 2020
F-35-53-CE 3
MOUNTING AND WIRING
The 35-53CE is not position sensitive and can be mounted
vertically or horizontally. The control may be mounted on any
surface and fastened with #6 sheet metal screws. Secure the
control in an area that will experience a minimum of vibration
and remain below the maximum ambient temperature of 176°F
(80°C).
All connections should be made with UL approved, 105°C rated,
18 gauge stranded wire with .054” minimum insulation thick-
ness. Refer to the appropriate wiring diagram when connecting
the 35-53CE to other components in the system.
TERMINAL DESIGNATIONS
CAUTION
Label all wires prior to disconnection when ser-
vicing or replacing controls. Wiring errors can
cause improper and dangerous operation. A
functional checkout of a replacement control
should always be performed.
CAUTION
The control must be mounted and located in a
manner which protects components from expo-
sure to water (dripping, condensate, spraying,
rain). Any control that has been exposed to
water must be replaced.
WARNING
All wiring must be done in accordance with both
local and national electrical code, and by a
trained service technician. Wiring must be at
least #18 AWG rated for 105°C or higher.
WARNING
The 35-53CE uses voltages of shock hazard
potential. Wiring and initial operation must be
done by qualified service technician.
WARNING
Operation outside specifications could result in
failure of the Fenwal product and other equip-
ment with injury to people and property.
WARNING
Do not disconnect battery or any electrical loads
while the automatic gas ignition control is pow-
ered.
Name Description Terminal Type Location Wire
Color**
PWR*+12 VDC
Power
3/16” male Q.C.
BLO*Blower 1/4” male Q.C.
AIR*Airflow Switch 6 Pin Edge
Connect
1 Red
TH*Thermostat 6 Pin Edge
Connect
2 Orange
NC NC Contact 6 Pin Edge
Connect
3 Blue
V1 Gas Valve 6 Pin Edge
Connect
4 Brown
TEST/
SENSE
Local Sense Unused 5 -
Remote Sense 6 Pin Edge
Connect
5 Black
GND Ground 6 Pin Edge
Connect
6 Yellow
HV H.V. Spark 1/4” male Q.C.
* For applications without blower control, AIR terminal is used to pro-
vide +12 VDC power. PWR, BLO, and TH are not used.
** Colors for Fenwal Controls wire harnesses

Effective: January 2020
4 F-35-53-CE
WIRING DIAGRAMS
Figure 1. Local Sense with Blower Relay
Figure 2. Local Sense without Blower Relay
Figure 3. Remote Sense with Blower Relay
Figure 4. Remote Sense without Blower Relay
DIMENSIONS - INTEGRAL STANDOFF
4.250
3.750
.250
3.250 2.750
.250
6 PIN EDGE CONNECTOR 1.25 NOM.
.218 MAX.
.250 Q.C.
H.V. TERMINAL
.164 .010 DIA.
(4) MOUNTING
HOLES
±

Effective: January 2020
F-35-53-CE 5
CONTROL WIRE HARNESS
Select the proper harness based on the 35-53CE control's ter-
mination connection. Standard wire lengths are 12, 18, 24 30,
36 and 48 inches. Refer to Fenwal Controls datasheet F-05-
1000 for details.
High Voltage and Remote Sense Cable
Requirements
The HV Ignition Cable must meet a voltage rating of 25 KV and
an insulation rating of 200 °C. Suppression type UL 3257 or SAE
J2031 ratings are recommended. Recommend length of 3ft
(.9m) or less. Consult factory for longer lengths.
Remote flame sense cable must meet a voltage rating of 250V
and an insulation rating of 200 °C. Recommended length of 10ft
(3m) or less. Consult Factory for longer lengths.
Refer to Fenwal Controls datasheet F-05-1000 for details.
SPARK ELECTRODES/FLAME SENSORS
Critical for gas-fired appliances, proper design, construction,
and application assures reliable ignition and optimal perfor-
mance. Fenwal Controls uses only glazed Alumina ceramics and
certified rod materials suitable up to 2175°F (1190°C). Spark
electrodes typically have a 0.125” gap between the high voltage
(HV) rod tip and the ground rod or burner. Flame sensors are a
single rod used in flame rectification circuit of the ignition con-
trol to confirm the presence (or absence) of the flame.
Refer to Fenwal Controls datasheet F-22-100 for details.
Proper Electrode Location
Proper location of electrode assembly is important for optimum
system performance. The electrode assembly should be located
so that the tips are inside the flame envelope and about 1/2-inch
(1.2 cm) above the base of the flame as shown:
Notes:
• Ceramic insulators must not be in or close to the flame.
• Electrode assemblies must not be adjusted or
disassembled. Electrodes are NOT field adjustable.
• Electrodes should have a gap spacing of 0.125 in (3.12
mm), unless otherwise specified by the appliance
manufacturer. Larger gaps may not perform as
intended in all conditions. If spacing is not correct, the
assembly must be replaced.
• Exceeding temperature limits can cause nuisance
lockouts and premature electrode failure.
• Electrodes must be located where they are not exposed
during normal operation.
Flame Current Measurement
Flame current is the current which passes through the flame
from the sensor to ground to complete the primary safety cir-
cuit. The minimum flame current necessary to keep the system
from lockout is 0.7µA. To measure flame current:
1. Disconnect Input Voltage.
2. Insert a 0-50µA DC meter and capacitor in series with the
sensor electrode and wire as shown below.
The meter should read 0.7µA or higher while flame is estab-
lished. If the meter reads below “0” on the scale, the meter
leads are reversed. Disconnect power and reconnect meter
leads for proper polarity.
CAUTION
When monitoring flame current, use a 1.0µF,
250 VDC bypass capacitor to protect the meter
from damage.
Control
Unit
µA Meter
Spark
Output
1µF

Effective: January 2020
6 F-35-53-CE
TROUBLESHOOTING
Note: The code will repeat every 3 seconds. Removing
power from the control will clear the fault code.
Internal Control Failure
If the control detects a software or hardware error, all outputs
are turned off and the red LED displays a Steady On condition.
If this condition persists after an attempt to restart, then the
control must be replaced.
WARNING
Risk of Explosion or Fire
The 35-53CE control cannot be serviced by the
user. If any control faults are detected, the 35-53
control must be replaced by qualified service
personnel. Risk of explosion or fire can result if
the control module has been opened or with any
attempts to repair it, and the warranty is void.
Troubleshooting Guide
Symptom Recommended Actions
1. Dead A. Miswired
B. Transformer/battery fault
C. Fuse/circuit breaker fault
D. No voltage at PWR or AIR
E. Bad control
2. Thermostat on - no blower
output
A. Miswired or failed air flow
switch
B. Faulty thermostat, no
voltage at thermostat
terminal TH
C. Faulty control
3. Airflow Switch input okay, but
no TFI after purge delay
A. Miswired
B. Faulty control
4. Valve on, no spark A. Valve coil open
B. Open valve wire
C. Faulty control
(check voltage between V1
and GND)
5. Flame okay during TFI, no
flame sense (after TFI)
A. Faulty electrode
B. Faulty HV wire
C. Poor ground at burner
D. Faulty control (check flame
current)
Fault Conditions - Red diagnostic LED
LED Indication Fault Mode
Off Normal
Steady On Internal Control Failure
1 flash Airflow / Limit Fault
2 flashes False Flame
3 flashes Ignition Lockout Fault
5 flashes Low Voltage Fault *
* Low Voltage Fault is below 8.7 VDC

Fenwal Controls, Kidde-Fenwal Inc.
400 Main Street
Ashland, MA 01721
Tel: 800-FENWAL-1
Fax: [phone]
fenwalcontrols.com
This literature is provided for informational purposes only.
KIDDE-FENWAL, INC. assumes no responsibility for the
product’s suitability for a particular application. The product
must be properly applied to work correctly. If you need more
information on this product, or have a particular problem or
question, contact KIDDE-FENWAL, INC.
©2020 Kidde-Fenwal, Inc. F-35-53-CE Rev AB
All other trademarks are the property of their respective owners.
STANDARD PART NUMBER CONFIGURATION
35 - 5 3 X X X X - X X X DESCRIPTION
Trial for Ignition Time
1 = 5 econds
3 = 7 econds
5 = 10 econds
7 = 25 econds
S
S
S
S
Inter-Purge
0 = None
1 = 15 econds
3 = 25 econds
S
S
Product Designation
2 = CE (EN298) Standard, Recycle
3 = CE (EN298) Special Configuration
A 3 in this location indicates a special configuration.
Consult Fenwal controls for operating characteristics of this control.
Pre-Purge
0 = None
1 = 15 Seconds
3 = 25 Seconds
Tries for Ignition & Method of Flame Sense
0 = Single Try - Local Sense
1 = Single Try - Remote Sense
5 = Three Tries - Local Sense
6 = Three Tries - Remote Sense
Post-Purge Time
0 = None
3 = 45 Seconds
4 = 60 Seconds
5 = 90 Seconds
6 = 130 Seconds
7 = 150 Seconds
SERIES
Blower Relay
0 = None
5 = Combustion Blower Relay
EX PORT INFORMATI ON (USA)
Jurisdiction: EAR
Classification: EAR99
This document contains technical data subject to the EAR.

Fenwal Controls
400 Main Street
Ashland, MA 01721
Tel. [phone]
© Kidde-Fenwal Inc. 06-237657-001 Rev AC
EU DECLARATION OF CONFORMITY
We
Company Name: Kidde-Fenwal Inc.
Postal Address: 400 Main Street
City and Post Code: Ashland, MA 01721
Tel: [phone]
Declare that the DoC is issued under sole responsibility and belongs to the following product:
Apparatus Model(s) Series 35-40, 35-53, 35-60, 35-61, 35-63, 35-608, 35-65, 35-66, 35-9X
Type: Fitting
Batch Number Date code and Revision Level Assigned per production lot, (YYWW RR)
Object of the Declaration:
Series 35-40, 12/24Vdc Direct Spark Automatic Gas Ignition Controllers
Series 35-53, 12Vdc Direct Spark Automatic Gas Ignition Controllers
Series 35-60, 35-61, 35-63, 35-608 24Vac Direct Spark Automatic Gas Ignition
Series 35-65 & 35-66 24Vac Hot Surface Automatic Gas Ignition Controllers
Series 35-9X Platform Ignition Module
SERIES 35-40 SERIES 35-53 SERIES 35-60/61/63/608 SERIES 35-65/66
SERIES 35-9X
The object of the declaration described above is in conformity within the relevant union
harmonization legislation:
Gas Appliance Regulation: (EU) 2016/426 Low Voltage Directive: 2014/35/EC
EMC Directive: 2014/30/EC Rohs 2011/65/EU
The following harmonized standards and technical specifications have been applied:
EN298:2012: Automatic Burner Control systems for Burners and appliances burning gaseous or liquid fuels.
EN13611:2007_A2:2011: Safety and control devices for Gas Burners and Gas burning appliances – General Requirements.
Name of Notified Body & Number: BSI Group, 0086, EU Type Examination Certification
Notified Body Certificate No.: Series 35-40: CE682407
Series 35-53 CE682404
Series 35-60/61/63/608 CE682405
Series 35-65/66 CE682406
Series 35-9x CE690652
Surveillance Audit Notified Body: BSI Group
For copies of the Installation Instructions and the EU DoC, got to www.fenwalcontrols.com, - Document Library - Data sheets.
Paul Finn
Kidde-Fenwal, Inc. Ashland, MA USA 01 Oct 2018 Paul Finn, Certification Engineer
Place of Issue: Date of Issue Name