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by M_arnold218
Wed Oct 30, 2019 5:32 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Fitting Honeywell DT90E in Place of old Dial Thermostat
Replies: 1
Views: 5484

Fitting Honeywell DT90E in Place of old Dial Thermostat

I have a dial thermostat with the following 3 wires (according to the connections in it): N, L also looped through to COM, ON (and no wire in OFF).

I'm not sure how these should connect to the DT90E A,B,C connections.

Help appreciated.
by M_arnold218
Tue Oct 29, 2019 9:05 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Honeywell DT90E wiring
Replies: 4
Views: 35472

Re: Honeywell DT90E wiring

I have a dial thermostat with the following 3 wires (according to the connections in it): N, L also looped through to COM, ON and no wire in OFF.

I'm not sure how these should connect to the DT90E A,B,C connections.

Help appreciated.
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