White-Rodgers 50D50U-843 24V Non-Integrated Spark Ignition Module Instruction Manual

50D50U-843
ALL-SPARK ™
24V Non-Integrated Spark Ignition Module
INSTALLATION INSTRUCTIONS

50D50U-843 24V Non-Integrated Spark Ignition Module

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

The All-Spark™  50D50U-843 is a non-integrated 24V single-stage spark ignition module. This module is designed to replace either  24V Intermittent Pilot (IP) or 24V Direct park Ignition (DSI) applications. Additional modifications can be made to replace applications with a rollout switch or edge card harness.
The module is factory set to match  Honeywell S8610U Intermittent Pilot default settings (See Table 1). To replace Fenwal, Robertshaw, Johnson Controls, BASO, Carrier, and other valid part numbers, additional configuration through the White-Rodgers Connect Mobile App or 7-segment display is available.
Agency Approval: ANSI Z21.20 Standard through UL

INCLUDED IN THE BOX

• 1 – 50D50U-843 Ignition Module
• 1 – 11-pin Harness Assembly
• 1 – Vent Damper Jumper Plug (installed on module)
• 1 – Local Flame Sense Jumper Wire (installed on module)
• 6 – 3/16” QC crimp on terminals
• 4 – 1” Sheet Metal Mounting Screws
• 1 – 1/4″ 14-16 AWG QC and shrink-wrap sleeve
• 1 – Fault Code Label for optional use
• 1 – Installation Instructions

VIEW INSTALLATION RESOURCES

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ELECTRICAL SPECIFICATIONS

OPERATING TEMPERATURE RANGE
-40° to 176°F (-40° to 80°C)
HUMIDITY RANGE:
5 to 95% relative humidity (non-condensing)
MOUNTING AND INSTALLING:
Leave at least ¼ in. clearance between the sides of the module and grounded metal
TIMINGS:
See Table 1 on page 3.
GASES APPROVED:
Natural, Manufactured, Mixed, Liquid Petroleum, LP Gas Air Mixtures

Failure to comply with the following warnings could result in personal injury or property damage

• Installation should be done by qualified heating and air conditioning contractor or licensed electrician.
• All wiring must conform to local and national electrical codes and ordinances.
• Following installation or replacement, follow the manufacturer’s recommended installation/service instructions to ensure proper operation.

FIRE HAZARD

• Do not exceed the specified voltage.
• Protect control from direct contact with water (dripping, spraying, rain, etc.).
• If the control has been in direct contact with water, replace the control.
• Label all wires before disconnection when servicing controls. Wiring errors can cause improper and dangerous operations.
• Route and secure wiring away from the flame.

SHOCK HAZARD

• Disconnect electric power before servicing.
• Ensure proper earth grounding of the appliance.
• Ensure proper connection of line neutral and line hot wires.
• Ensure the control has 1/4” clearance between all sides of the control and grounded metal.

EXPLOSION HAZARD

• Shut off the main gas to the appliance until installation is complete.

MOBILE APP CONFIGURATION (PREFERRED)

For the fastest setup, use White-Rodgers Connect App:

1. Download from iOS App Store or Google Play Store
2. Open White-Rodgers Connect App
3.  Touch “Connect to Control” on the home page
4. Place the Device above NFC Logo on the Module, and wait for a checkmark
5. Configure all settings in App
6. Touch “Update Control”
7. Place the Device above NFC Logo on the Module, and wait for a checkmark

App tutorial available on the homepage of White-Rodgers Connect
NFC is available on iOS 13 and greater (iPhone 7 and up) and all Android devices

ONBOARD CONFIGURATION (7-SEGMENT OPTION)

General LED Display Details:

| Condition| LED Display| Description
---|---|---|---
Module Power Up| 888| During power-up, each LED will be steady.
Integrated TSTAT = OFF| Standby| On| Normal operation on powered systems, no heat call present
Integrated TSTAT = ON| Standby| O0f| Normal operation with no heat call; LEDs 1 and 2 display the current temperature and LED 3 displays the unit

Additional Notes:
The user is only allowed to enter the menu when the module is on standby
Standby is only available on systems that power the module with dedicated 24V (to access the menu  on systems that power the module only through TH-W, see table below)
The module will ignore heat call when the menu is open

Configuration Menu Operation:

| Action| Module Status| Button Press| Duration
---|---|---|---|---
Module powered by 24V| Enter Configuration Menu| In Standby (Integrated TSTAT = OFF )| OPTION| < 3 seconds
Module powered by TH-W| Enter Configuration Menu| Unpowered| OPTION while applying 24V to the TH-W terminal| > 3 seconds
Module powered by 24V| Enter Configuration Menu| In Standby (Integrated TSTAT = ON )| OPTION| > 3 seconds
| Advance 1 Options Menu Item| In Configuration Menu| OPTION| < 2 seconds
Enter Selections Menu Level| At the Options Menu Level| SELECT| < 2 seconds
Advance 1 Selection Item| At Selections Menu Level| OPTION| < 2 seconds
Confirm Selection| On Chosen Selection| SELECT| < 2 seconds
Integrated TSTAT = OFF| Exit Configuration Menu| On No. 3.0 in Configuration Menu| OPTION| < 2 seconds
Integrated TSTAT = ON| Exit Configuration Menu| On No. 3.5 in Configuration Menu| OPTION| < 2 seconds

*See Table 1 on Page 3 for Configuration Menu Options and Selections

**Table 1: Configuration Menu Options

• Factory Default Setting
  **

No.| Menu Item| LED 1 (flash)| LEDs 2 & 3  Display| Unit| Description / Rule
---|---|---|---|---|---
1.0| System Ignition Type| S Y S| IP * , dS| N/A| Intermittent Pilot (IP) or Direct Spark (DS)
1. IP System menu will be displayed if the System Ignition Type is set to ‘IP’
1.1| Tries for Ignition*| t r Y| C (continuous),1 , 2, 3| N/A| Number of times the module will retry ignition before going to auto restart delay.
1.2| Trial for Ignition (TFI) Timing| I 9+ n| 90 * , 4, 5, 30, 0| Seconds| The time the module will spark for each try
1.3| Pre-purge*| P r E| 0 , 5, 30, 45| Seconds| Delay time before spark ignition attempt
1.4| Inter-purge| In t| 0 , 5, 30, 45| Seconds| Delay time in- between spark attempts
1.5| Flame Sense Type| F L S| LCL , rEt| N/A| Local (LCL) or Remote (rEt) flame sense.

1.6

| Auto Restart Time| R u t| 5 , 60| Minutes| Delay time after module reports Gas Valve Off Lockout or No Flame During TFI Error. The module resets and goes back to standby.
1.7| Reset to Default| C F d| No , Yes| N/A| Reset IP system selections back to default
1.8| Integrated Thermostat| t s t| OFF *** , On| N/A| If ON, install Integrated Thermostat Temperature Sensor and see No. 3.1 for more selections
2. DS system menu will be displayed if the System Ignition Type is set to ‘DS’
2.1| **

Tries for Ignition

| ****

t r Y

| ****

***** , 2, 3

| ****

N/A

| Number of times the module will retry ignition before going to auto restart delay.
2.2| Trial for Ignition Timing| I 9 n| 4 , 7, 0, , 5, 29| Seconds| The time the module will spark for each try
2.3| Pre-purge| P r E| 30 , 45, 0, 5| Seconds| Delay time before spark ignition attempt
2.4| Inter-purge| I n t| 30 , 45, 0, 0, 5| Seconds| If 2 or 3 tries for ignition are selected, 0 seconds inter-purge will not be available
2.5| Post-purge| P S t| 0 , 5, 5, 30| Seconds| Delay time after heat call has ended
2.6| Flame Sense Type| F L S| LcL , rEt| N/A| Local (LCL) or Remote (rEt) flame sense
2.7| Auto Restart Time| u t| 5 , 0| Minutes| Delay time after module reports Gas Valve Off Lockout or No Flame During TFI Error. The module resets and goes back to standby.
2.8| Inducer/Pressure Switch Option| I n d| On , Off| N/A| If the module being replaced has an inducer/pressure switch option, enable this setting to ON
2.9| Reset to Default| C F d| No , Yes| N/A| Reset DS system selections back to default
2.10| Integrated Thermostat| t s t| Off , On| N/A| If ON, Install Integrated Thermostat Temperature Sensor and see No. 3.1 for more selections
3. Integrated Thermostat selections will be available if No. 1.8 or 2.10 is set to ‘ON’
3.1| Temperature Unit| S C L| oF , oC| N/A| Fahrenheit or Celsius
3.2| Temperature Offset| O f s| – 9 – 0 – (°F)| °F| This is the desired temperature for the space being heated
-5 – 0 – 5 (°C)| °C
3.3| Cycle Rate| C Y C| SLo, nor , FSt| N/A| Slow, Normal, Fast
3.4| Reset to Default| t f d| no , yes| N/A| Reset Integrated Thermostat selections to default
Temperature Set Point Range**| 40 – 80 8 | °F| (Set Point – Offset) cannot be less than 40 °F (5 °C) or greater than 80 °F (27 °C)
5 – 27 20 | °C

**To view/change the Set Point value, press OPTION after No. 3.4 (module exits menu and goes to standby), press OPTION again and the current Set Point will be shown. For further configuration, see the Integrated Thermostat section on page 8.

INSTALLATION

MOUNTING AND WIRING DIAGRAM

1. If using White-Rodgers Connect to configure, connect to the app and configure the settings of the new module before installation. If not using the app to configure, skip this step.

2. Disconnect the electrical power and gas supply to the unit, then remove the unit access panels.

3. Individually disconnect and transfer each wire from the existing module and connect to the appropriate QC terminal on the 50D50U-843 11-pin harness or dedicated spade terminals on the 50D50U-843 module. Once all wires have been transferred, remove the existing module. TIP: first take pictures of the old setup for reference.
   • Strip and re-wire the 11-pin harness with provided
   NOTE: All wiring should be installed according to local and national electrical codes and ordinances 3/16” loose QC terminals if necessary

4. 50D50U-843 can be mounted in any orientation. Select a location that will not damage, obstruct or place any stress on the terminations or harness. Ensure clearance of  ¼” between the sides of the module and grounded metal.

5. Mount 50D50U-843 in the unit using the mounting holes noted below. Be certain not to damage any components such as transformers, wire harnesses, es or blower wheels when drilling or installing screws.

6. Take note and match the old control’s damper plug and flame-sensing operation with the new 50D50U-843.
   • Example: if the old module had a damper plug and remote flame sensor installed, keep the damper plug installed on 50D50U-843 and remove the jumper wire for remote flame sense.

7. Plug an 11-pin harness with wires transferred from the old module to the new 50D50U-843. Ensure all wires are secured to the harness.

8. Reconnect electric power to the unit.

9. If not using White-Rodgers Connect to configure, use 7-segment LED Display to change settings to match the old module. See page 2 on how to enter and operate the configuration menu and page 3 for an explanation of settings.

10. Install Fault Code Label in a viewable location.

11. Reinstall unit access panels and reconnect the gas supply to the unit.

12. Verify unit is operating correctly per the configuration selected.

When replacing Honeywell S8610U – Intermittent Pilot (IP)

Other Setup Notes:

• Keep vent damper jumper plug installed on 50D50U-843 if the replaced module has it installed
•  When installing 50D50U-843 with this setup, leave the 24V terminal on 50D50U-843 unconnected and insulated (module will receive power from TH-W)
• To use a module with a vent damper, remove the vent damper jumper plug and connect the damper harness assembly to the vent damper connector on 50D50U-843
• Once 50D50U-843 receives power with a vent damper connected, an internal circuit will open (non-reversible; the module with the jumper plug will no longer work)
• If there is no TH-W terminal on the replaced module, connect the wire from the 24V or 25V (2) terminal on the old module to TH-W on the new 50D50U-843 and leave 24V  on 50D50U-843 unconnected and insulated
• For systems with air proving switch (APS), connect the output of APS to TH-W on 50D50U-843
• If default settings are not being used on replaced S8610U, match the correct settings to 50D50U-843 through White-Rodgers Connect App or 7-segment Configuration Menu
• Follow all safety guidelines on page 1 and directions under MOUNTING AND WIRING DIAGRAM on page 4

The sequence of operation when 50D50U-843 is configured to replace S8610U:

When replacing Fenwal 35-60 or 35-61 – Direct Spark Ignition (DSI)

To Configure Module:

1. Determine the configuration and timings for the module being replaced. Can be found in the manufacturer literature or label on the module.
2. Use White-Rodgers Connect OR 7-segment LED and follow Table 1 to select the proper settings.

Other Setup Notes:

• If the module being replaced does not have a terminal shown in the diagram above, leave that wire in the 50D50U-843 11-pin harness unconnected and insulated to prevent the possibility of a short-circuit
  ○ For example, the 35-60 DSI series does not have 24VAC/R, so leave the 24V wire on 50D50U-843 un-used when replacing any module in the 35-60 DSI series

• Follow all safety guidelines on page 1 and directions under MOUNTING AND WIRING DIAGRAM on page 4

The sequence of operation when 50D50U-843 is Configured to Replace 35-60 or 35-61:

FAULT CODES STATUS CODES

Condition| LED 1| LED 2| LED 3| Comment/Troubleshoot Step
---|---|---|---|---
Call for Heat (W) with Pre-Purge Active| h| P| r| Pre-purge is the delay during a heat call before a spark ignition attempt
Call for Heat (W) with Inter-Purge Active| h| I| P| Inter-purge is the delay during a heat call in between spark ignition attempts
Call for Heat (W) with Post-Purge Active| h| P| o| Post-purge is the delay immediately after a heat call has ended
Call for Heat (W) Trial for Ignition Period Active| t| F| I| TFI is the time period in which the module attempts to spark for ignition
Call for Heat (W) after the flame is active| h| t| | Appears when the flame is active during normal heat call; Toggles with Weak Flame Signal (if applicable). When the integrated thermostat is on, h t will toggle with the temperature sensor reading
Weak Flame Signal Sensed| F| L| o| Check flame probe, clean or replace probe if needed
Internal Module Error| | | | LEDs will be blank, wait for the module to reset; if the problem persists, replace the module
Gas Valve On (GV) Error| E| | | GV is on when it shouldn’t be, check GV
Flame Sensed Out of Sequence| E| 0| 4| Check the ignition source, gas valve, or flame probe
Vent Damper Error| E| 0| 5| Check Vent Damper and Vent Damper connections
Loss of IRQ signal| E| 0| 0| Recycle power and replace the module if the problem persists
Fuse Open| E| 0| | Replace 5 amp ATC fuse (F1)
No Flame During TFI| E| 0| 2| Check the ignition source, gas valve, or flame probe
Flame Out During Run| E| 0| 3| Check the ignition source, gas valve, or flame probe
Gas Valve Off Error| E| | 2| The gas Valve is off when it shouldn’t be, check GV
Gas Valve Off Lockout| E| 2| 2| Excessive GV off error, the module will enter auto-restart delay and reset
Air Temperature Sensor Error| E| | 0| Check the Integrated Thermostat Sensor and AirT connection
Wrong 24VAC Supply| E| 0| 8| Check the supply voltage source. Must be >18VAC and <30VAC
Pressure Switch Open| E| 0| | Check the Pressure Switch connection
Pressure Switch Stuck Closed| E| 0| | Check the Pressure Switch connection
TH-W / Limit Open Error| e| | 3| The module is not receiving 24 V on the TH-W terminal during integrated thermostat mode; Check system wiring, safety switches, and connection at W OUT / BLWR terminal
PSW Mis-wire Error| e| E| | The module has received 24V on the PSW terminal when it shouldn’t; Check configuration and wiring at PSW
Connectivity Error| E| C| | Recycle power, if the problem persists, use onboard configuration
Operation| Module Status| Action| Duration of Action| LED Display| Extra Notes
---|---|---|---|---|---

Fault Code Recall

| Standby| ****

Hold OPTION and SELECT together

| ****

2-5

seconds

| F L T after 2 seconds| •   A maximum of 5 error codes are stored in the sequence they occur
• Press the OPTIONS button < 1 second to advance to the next fault code
• When the OPTIONS button is pressed after the last error code, LEDs return to the current status of the unit
• E N o will be displayed if there are no error codes stored
Fault Code Reset| **** Standby| Hold OPTION and SELECT together| 5-10

seconds

| Alternates between
C L r
and
F L T
after 5 seconds| •   Once both OPTION and SELECT are released after holding them together for 5-10 seconds, the LEDs will flash C L r 3 times to indicate the error codes have been successfully erased, module will then return to the current status
• Error codes are stored in the module’s memory for up to 14 days (error codes stored in systems powered by TH-W will have no expiration)
Unlock Settings| Standby| Hold OPTION and SELECT together| 10-20 seconds| U n L
after 10 seconds| • All settings on the control will lock after 10 consecutive calls for heat
• Once both OPTION and SELECT are released after holding them together for 10-20 seconds, the LEDs will flash U n L 3 times to indicate the settings have been unlocked

Note: heat call is ignored when the module is in Error Code Recall, Reset, or Unlock Settings menu explained above

DSI Edge Card Models

These models have a unique edge card harness in the OEM unit wiring. To connect 50D50U-843, cut each individual wire from the edge card harness, attach the ¼” QC spade terminal and connect directly to the 11-pin harness.

Additional Wiring Scenarios For Modules With a Rollout Switch

For modules that have a separate rollout switch terminal, take the wire connected to the rollout switch on the old ignition module and plug it into the TH-W terminal on the  50D50U-843 11pin harness.
The old ignition module is being replaced

New 50D50U-843 ignition module

All-Spark™  50D50U-843 has been designed with a new integrated thermostat feature that allows the module to create its own call for heat without using an external thermostat in the system. This feature requires a dedicated 24V path wired to the 50D50U-843 ignition module (24V terminal on an 11-pin harness). This feature is only designed for radiant, infrared, and tube heat applications. Refer to the diagram on the right to properly wire all safety switches in the system. Steps to use the integrated thermostat feature are listed below:

1. Purchase White-Rodgers Integrated Thermostat Sensor F67-8535

2. Connect the sensor to AirT connector input on the All-Spark board

3. Secure the sensor in the desired heating location of the space

4. Configure Integrated Thermostat settings through White-Rodgers Connect App or 7-segment LED Display (see Table 1 on page 3)

5. Connect W Out Terminal to the input of the safety chain

6. Connect Safety chain output to TH-W on an 11-pin harness

7.  Connect power to the ignition module
   a. Note: if using a 7-segment LED Display to configure, 24V power must first be connected to the module. Follow  all safety guidelines outlined on page 1 and wiring  instructions explained under MOUNTING AND WIRING DIAGRAM on page 4

8. Connect gas and ensure the unit is heating correctly

Integrated Thermostat Feature
For radiant, infrared and tube heater applications only

IMPORTANT: Connect W Out on the 50D50U-843 module to the input of safety switches (limit, rollout, etc.) and connect the output of safety switches to TH-W on 50D50U-843
How To View and Change Temperature Set Point (TSP):

Temperature Range: 40 – 80 °F (68 °F is default) or 5 – 27 °C (20 °C is default)
(Set Point – Offset) can’t be less than 40 °F (5 °C) or greater than 80 °F (27 °C)

seconds

CSF will display after 3 seconds

Integrated Thermostat Offset:

• Offset is most applicable when the sensor is unable to be placed in the desired heating location
• When the sensor is in a location warmer than desired, use the negative offset (if the sensor is in a location colder than desired, use the positive offset)
  ◦ Example: set point = 65 °F, actual
  temperature of desired location = 63 °F,
  sensor reading = 68 °F, use an offset of -5 °F

TECHNICAL SUPPORT: 1-888-725-9797

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