White Rodgers 50T35-743 Installation Instructions

warnings could result in personal injury or property damage. 50T35-743 Integrated Furnace Control FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE. PART NO. 37-6533A 0414 DESCRIPTION INSTALLATION INSTRUCTIONS The 50T35-743 Integrated Furnace Control is a replacement for Goodman B18099-06, B18099-08, B18099-10 and B18099-13 HSI modules PRECAUTIONS Operator: Save these instructions for future use! FIRE HAZARD • Do not exceed the specified voltage. • Replace existing control with exact model and dash number. • Protect the 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 servic- ing controls. Wiring errors can cause improper and dangerous operation. • Route and secure wiring away from flame. SHOCK HAZARD • Disconnect electric power before servicing . • Ensure proper earth grounding of appliance. • Ensure proper connection of line neutral and line hot wires. EXPLOSION HAZARD • Shut off main gas to appliance until installation is complete. Installation should be done by a qualified heating and air conditioning contractor or licensed electrician. If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or licensed electrician. Do not exceed the specification ratings. All wiring must conform to local and national electrical codes and ordinances. This control is a precision instrument, and should be handled carefully. Rough handling or distorting compo- nents could cause the control to malfunction. Following installation or replacement, follow manufacturer’s recommended installation/service instruc- tions to ensure proper operation. CAUTION Do not short out terminals on gas valve or pri- mary control. Short or incorrect wiring may dam- age the thermostat. White-Rodgers is a division of Emerson Electric Co. www.white-rodgers.com

For GMP & GMPV series units, cut the white jumper wire between pins 1 & 4 of the 9 pin connector. For GMPN & GMN series units, DO NOT cut the white jumper wire. Remove the edgecard connector and other wires from the existing module. Discard the thermostat wires re- moved from the board (R, W & G). Remove the existing HSI module. Care should be exer- cised as not to damage the nylon standoffs. Install the 50T35-743 module. Reconnect the edgecard connector making sure of good contact. Push the 9 pin connector into the HSI module. It can go in only one way. DO NOT force. Reconnect the supplied thermostat wires. Remove the red wire from the 24 volt side of the secondary side of the transformer and discard. Remove the blue ground wire from the transformer. DO NOT discard. Remove the blue wire from the transformer and discard. Place the red wire from the 9 pin connector on to "24 volt" of the secondary side of the transformer. Place the blue wire from the 9 pin connector on to "Common" terminal of the secondary side of the transformer. This wire has a piggy back terminal. Place the blue ground wire, which was previously re- moved, on to the "Common" terminal of the trans- former. Replace the access panels. Restore gas and electrical power to the furnace. Verify the sequence of operation as noted in the Installa- tion & Operating Instructions. SELECTING THE BLOWER OFF DELAY In the heating mode, the blower off delay can be selected to obtain a 90, 120 or 150 seconds period. This can be accomplished by changing the position of a plastic jumper located on the ignition control. See the drawing below for the location of this jumper. The control is factory set to give a (150) second blower off delay. See drawing below for the jumper position for all available settings: Notes: • If the jumper is removed, the control will default to a (150) second blower off delay in the heating mode. • The blower on time in the heating mode is (30) seconds and is non-adjustable. • The blower on time in the cooling mode is (7) seconds and is non-adjustable. • The blower off delay in the cooling mode is (60) seconds and is non-adjustable. • Caution is to be exercised not to bend the metal pins when changing the time delay from the factory setting. STATUS 90 120 150 P3 JUMPER SET STATUS 90 120 150 P3 JUMPER SET STATUS 90 120 150 P3 JUMPER SET FOR 90 SEC. FOR 120 SEC. FOR 150 SEC. BLOWER TIME OFF JUMPER 90 120 150 STATUS P3 TWIN W G R Black White 24 v. Red Com. Blue GND. Blue TRANSFORMER 115v. Supply The Emerson logo is a trademark and a service mark of Emerson Electric Co.