novice123
Sep 10, 2008, 09:41 AM
Based on the manufacture's recommendation, I am replacing an old White-Rodgers manual 1F58-77 thermostate with a new White-Rodgers electronic digtal 1F89-211 unit. I have three questions.
1. My current unit is wired to the following terminals: G Y R W2 O E X1
My new unit has the following terminals G Y R W2 O E L C
Question - Which terminal (I assume either L or C? ) do I connect the X1 wire to - and if it is L or C, I assume the other terminal is left empty?
2. In the instructions for the new unit, it states "If your emergency or auxiliary system will energize the blower, then jumper W904 on the termostat must be cut. IF your emergancy or auxillery heat system requires that the thermostat energized the fan circut, do not cut the jumper W904". Question - How do I determine if I should cut the jumper?
3. There is a jumper wire connecting the W2 and E terminals on the new thermostat. In the wiring diagram, it notes "Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency". Question - How do I determine if this jumper needs to be left on the thermostate or removed?
Thanks for your assistance.
1. My current unit is wired to the following terminals: G Y R W2 O E X1
My new unit has the following terminals G Y R W2 O E L C
Question - Which terminal (I assume either L or C? ) do I connect the X1 wire to - and if it is L or C, I assume the other terminal is left empty?
2. In the instructions for the new unit, it states "If your emergency or auxiliary system will energize the blower, then jumper W904 on the termostat must be cut. IF your emergancy or auxillery heat system requires that the thermostat energized the fan circut, do not cut the jumper W904". Question - How do I determine if I should cut the jumper?
3. There is a jumper wire connecting the W2 and E terminals on the new thermostat. In the wiring diagram, it notes "Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency". Question - How do I determine if this jumper needs to be left on the thermostate or removed?
Thanks for your assistance.