• Get Your Parts Fast! Place your order before 3PM EST and it will ship on the same or next business day.

Navigate to the parts4heating.com homepage

CALL 800-536-1582

For a faster response Email Us

Fenwal 2460D500-005 Ignition Control Replacement

Fenwal Triton 2460D500-005 Ignition Control Module REPLACEMENT

Fenwal Controls Inc.
0 Reviews
$0.00
Product Code: 2460D500-005
Fenwal 2460D500-005 24VAC Direct Spark CSA ignition control module. This control is no longer available. A Fenwal direct replacement will be supplied.

FEATURES

  • Safe start and full-time flame sensing
  • 120/240 field selectable line voltage for use with 120 VAC ignitor option
  • 24/120/240 VAC hot surface ignitor models available
  • Blower control and airflow switch monitoring option
  • Diagnostic LED
  • Multiple trials for ignition
  • Automatic reset option
  • Local or remote flame sensing
  • Flame current test pins
  • Dual speed blower option for LoNox applications
  • Fail-safe gas valve control (35-66 only)
  • CE models available

APPLICATIONS

  • Pool and spa heaters
  • Gas furnaces
  • Water heaters
  • Any 24 VAC gas burner application under 400K BTU

DESCRIPTION

The Series 35-65 and 35-66 controls are designed to perform many gas-fired 24 VAC appliance functions in a single control, resulting in lower system cost. This series monitors the demand for heat, controls the combustion blower, monitors proper airflow, ignites and maintains the flame during heating, and provides diagnostic support. The on-board diagnostics with LED output provide assistance with troubleshooting and ensures safe and efficient burner operation.

The microprocessor circuit design provides precise, repeatable timing sequences for ignition and purge times (pre-, inter-, and post-) as well as multiple tries for ignition. The optional 120/240 VAC field selectable line voltage capability provides additional field service efficiency and lower inventory costs.

SPECIFICATIONS

INPUT POWER Voltage CurrentControl: 18 to 30 VAC 50/60 Hz (Class 2 Transformer) Line: 24, 120 or 240 VAC (L1 & L2 only) 300 mAmax @ 24 VAC with blower and gas valve relay energized (Control only)
OUTPUT (CONTACT RATINGS) Gas ValveCombustion Blower (Model 35-66 only)Hot Surface Element2.0Amax @ 24VAC, 3.0 FLAmax @ 120VAC (1/4 hp) 1.5 FLAmax @ 240 VAC (1/4 hp)5.0Amax @ 120/240 VAC
OPERATING TEMPERATURE-40 to +176 deg. F (-40 to +80 deg. C)
FLAME SENSITIVITY0.7 microamps minimum
TYPES OF GAS Natural, LP, or manufactured
ignitor24 VAC, 120 VAC, or 240 VAC mini-ignitors and silicon carbide ignitors depending on model
ENCLOSUREGray (Noryl N-190)
MOISTURE RESISTANCEConformal coated to operate non-condensing to 95% R.H. Care must be taken to protect module from direct exposure to water
SIZE WITH ENCLOSURESee Figures on Page 7
WEIGHT8 oz including cover

CONTROL CONFIGURATION


POWER-UP / STANDBY

35-66 with Full-Time Power (R Models only): Upon applying power (24 volts) to the R terminal, the control will reset, perform a self-check routine, flash the diagnostic LED for a second and enter the thermostat scan state.

CALL FOR HEAT

35-65 & 35-66 without Full-Time Power (R Terminal): When a call for heat is received from the thermostat supplying 24 volts to the W terminal, the control will perform a self-check routine, flash the diagnostic LED for a second and begin the safety timing sequence. After an optional pre-purge period, the hot surface ignitor is energized for a heat-up period, followed by the gas valve for the trial for ignition (TFI) period.

Call for Heat - 35-66 Models: In addition to the self-check routine described above, when a call for heat is received from the thermostat supplying 24 volts to the W terminal, the control will check the pressure switch for normally open contacts. The combustion blower is then energized and, once the pressure switch contacts close, an optional pre-purge period begins. After pre-purge, the hot surface ignitor is energized for a heat-up period, followed by the gas valve for the trial for ignition (TFI) period.

Ignition - 35-65 Models: When the flame is detected during the TFI period, the ignitor is de-activated and the gas valve remain energized. The thermostat and main burner flame are constantly monitored to assure that the system operates properly. When the thermostat is satisfied and the demand for heat ends, the gas valve is immediately de-energized.

Ignition - 35-66 Models: When the flame is detected during the TFI period, the ignitor is de-activated and the gas valve and combustion blower remains on. The thermostat, pressure switch and main burner flame are constantly monitored to assure that the system operates properly. When the thermostat is satisfied and the demand for heat ends, the gas valve is immediately de-energized, the control senses the loss of flame signal and initiates an optional post-purge period before de-energizing the combustion blower.

FAILURE TO LIGHT - LOCKOUT

Single Try Models: Should the main burner fail to light or the flame is not detected during the TFI period, the control will lockout. The gas valve will be turned off immediately. For 35-66 models, the combustion blower will be turned off following an optional post-purge period. With the 1 hour reset option, if the thermostat is still calling for heat, the control will automatically reset and attempt a new TFI sequence after one hour.

FAILURE TO LIGHT - LOCKOUT (continued):

Multi-try Models:

Should the main burner fail to light or the flame is not detected during the first TFI period, the gas valve is de-energized and the control performs an optional inter-purge delay before attempting another TFI period. The control will attempt 2 additional TFIs periods before locking out. In lockout, the gas valve will be turned off immediately. For 35-66 models, the combustion blower will be turned off following an optional post-purge period. With the 1 hour reset option, if the thermostat is still calling for heat, the control will automatically reset and attempt a new TFI sequence after one hour.

Lockout Recovery:

Recovery from lockout requires a manual reset by either resetting the thermostat or by removing the 24 volts for a period of 5 seconds.

Loss of Flame - Re-igntion:

If the established flame signal is lost while the burner is operating, the control will respond within 0.8 seconds. The gas valve is de- energized immediately and a new TFI sequence begins. If the burner does not relight, the control will lockout as previously described in the Failure to light - Lockout section. Multi-try models will make 2 more attempts to light the burner. If flame is re-established, normal operation resumes.

COMBUSTION AIR FLOW PROBLEMS 35-66 Models only:

1. Combustion airflow is continually monitored during the ignition sequence by the pressure switch (PSW terminal). If the pressure switch contacts remain closed for 30 seconds at the start of the ignition sequence without an output signal to the combustion blower, an airflow fault is signalled and the control will remain in this fault mode with the combustion blower off. If the pressure switch contacts later open while there is still a call for heat, the control begins the pre-purge period followed by a normal TFI sequence.

2. If the pressure switch contacts remain open for more than 30 seconds after the combustion blower output (F1 and F2 terminals) is energized, an airflow fault is signalled and the control will remain in this fault mode with the combustion blower on. If proper airflow is later detected from the pressure switch input (PSW terminal), the control begins the pre-purge period followed by a normal TFI sequence.

3. If the airflow signal is lost while the burner is firing, the control will immediately de-energize the gas valve and an airflow fault is signalled. The combustion blower will remain on for the post-purge period and the control continues to monitor the PSW input waiting for airflow to return. If proper airflow is detected during the post-purge period, a normal TFI sequence begins preceded by any pre-purge period. If not, the control will enter a lockout condition with the combustion blower off.

Flame Fault (Full Time Power Models Only): During normal sequence if an erroneous flame signal occurs, due to the gas valve failing to close completely, the controller will energize the combustion blower. Should the gas valve later close completely and the flame signal be removed, the combustion blower will power off following an optional post-purge period.

MOUNTING AND WIRING

The 35-65 and 35-66 models are 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 80 deg. C (175 deg. F)

Reviews

Average Customer Review:
( 0 )