White Rodgers 50M56U-843 Manual De Usuario

3

• Wiring harnesses and a Universal 21D64-2 ignitor are

included in this package. Refer to the enclosed “Cross 
Reference and Harness Application Chart” (Part Number
37-7077) for harness selection and ignitor application 
information. Ignitor installation instructions are in the 
UNIVERSAL 21D64-2 Ignitor package included with this kit.

•

IMPORTANT: For continuous fan speed operation, one of  
the unused parked motor taps must be connected to the 
low heat speed terminal. Failure to do this will result in the 
blower not energizing in the constant fan mode operation. 
Refer to figure 1.

• Installer must read Page (6) “Operation” and follow option

switch setting for proper control operation.

• In certain applications it may be necessary to remove the

control board from the cover to be mounted in the space  
allowed. Standoffs supplied in the package must be 
installed before the control board can be mounted.

• 4 Blower lead extensions are included in the kit if extra

length is needed to complete installation.

For continuous fan speed 
connect one of the unused 
parked terminals here 

290600

  J

Pin 11 (RO In)

Pin 5 (RO Out)

Jumper 0151-290600
(for Trane and American 
Standard applications only)

•

 For all TRANE and AMERICAN STANDARD furnaces

only: Install jumper 0151 290600 (included in this
package) into the back of the furnace 12 pin connector
harness from pin 5 to pin 11 as shown in Figure 2.
Make sure jumper snaps into the connector securely.

•

 If the furnace control being replaced has 2 green lights

and NO amber light (furnace date code 3294 or earlier)
a Flame Sensor Kit, RHEEM Part Number 62-24044-71
(not available from White-Rodgers) is required. Install 
the flame sensor and plug the flame sensor lead into 
pin 7 of the connector on the furnace as detailed in the 
Rheem Flame Sensor Kit instructions. Plug the furnace 
connector into harness “B” (included in this package).
Plug the other end of harness “B” into the new module.
Attach the orange wire from harness “B” (3/16” female
spade terminal) to FS on the new module to complete 
the flame sense circuit.

•

 This kit will not replace BRYANT / CARRIER / DAY &

NIGHT / PAYNE HK42FZ013 modules or CARRIER
/ BDP modules using an 11 pin (straight) connector.
Refer to the enclosed “Cross Reference and Harness 
Application Chart” (Instruction sheet Part Number 37-
7077) included with this kit for the list of modules it 
replaces.