June 2011
06-237172-001 Rev AA
SERIES 35-63J
INSTALLATION INSTRUCTIONS FOR REPLACING JOHNSON CONTROLS G77X
AND OTHER MODELS WITH FENWAL SERIES 35-63J IP IGNITION CONTROL
APPLICATIONS
The Fenwal 35-63J series Intermittent Pilot Ignition Control (35-
63J) is a microprocessor based ignition control suitable for
replacing many existing intermittent pilot ignition controls from
various manufacturers.
The 35-63J is a direct form, fit, and functional replacement for
the discontinued Johnson G77x series controls. The 35-63J is
available in a number of timing configurations that match popu-
lar G77x applications providing a better solution than a univer-
sal type aftermarket control. The most common applications are
listed in “Control Cross Reference” on page 2.
The 35-63J is suitable for many types of heating applications
including commercial cooking, furnaces, boilers, and water
heaters that require intermittent pilot ignition, burner supervi-
sion through flame rectification, and safety shutoff. It is
designed for use with Natural, LP, and mixed gases used in
gas-fired appliances.
The microprocessor circuit design of the 35-63J provides pre-
cise, repeatable timing and operating sequences. High energy
spark output and excellent flame sense characteristics provide
reliable burner operation. The on-board diagnostics with LED
output make troubleshooting easy and ensure safe and efficient
operation.
FEATURES
•
Safe start and full-time flame sensing
•
Wide variety of prepurge and interpurge timings
•
Single or three trials for ignition
•
Diagnostic LED with Fenwal error codes
•
Three ground terminals for ease of wiring
•
Remote or local flame sense options
•
Automatic 5 min or 1 hour reset after lockout options
AGENCY CERTIFICATIONS
CSA Design certified to ANSI Z21.20,
CAN/CSA C22.2 No. 199-M99
SPECIFICATIONS
Input Power
Control: 18-30 VAC 50/60 Hz
(Class 2 Transformer)
Input Current Drain
200 mA @ 24 VAC with gas and
pilot relays energized (Control
only)
Main Gas Valve
2.0A max (continuous)
Pilot Gas Valve
2.0A max (continuous)
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
0.3
μ
A minimum
Flame Failure Response or
Reignition Time
0.8 seconds minimum
Flame Detector Self-check Rate Once per second minimum
Flame Failure Lockout Time
Varies by model, 500 seconds
maximum
Types of Gas
Natural, LP, or manufactured
Spark Rate
Remote sense (50/60 Hz)
Local sense (25/30 Hz)
Size (LxWxH)
4.70 x 3.10 x 2.50 inches
(11.94 x 7.87 x 6.35 cm)
Moisture Resistance
Conformal coated to operate non-
condensing to 95% R.H.
Tries for Ignition
One or three try versions available
Trial for Ignition Periods
8, 25, 50, 85, and 120 seconds
available
Pre-purge Timings
None, 4,15, or 30 seconds
available
Inter-purge Timings
None, 15, 30, or 45 seconds avail-
able
