Rth3100c installation

The manual said that if the old thermostat had w1, w2 and why wires, I need to contact a heating The Furnace already has a to 24v transformer wired to the furmace, which is how the old April air humidifier was wired. There are two yellow wires coming out of the water inlet solenoid on the Hi there. The problem is that the tools that installed my high efficiency furnace didn't install the wall plate with my thermostat it was a new house and the builder contracted these guys.

The thermostat has place for all of the wires except the B blue wire. Do I need a different thermostat or can the B wire be put in the Rc space Remember Me? Find questions to answer Find today's questions Find unanswered questions. Search Topics. Show Questions Show Posts. Login Not a member? Join our community.

You'll probably see a thermostat jumper wire connecting the Rc and Rh terminals. It's there so you can supply power to the heating and cooling switches with a single wire, which is usually red. After installing the RTHC, you can enjoy maintaining a comfortable temperature within your home, even when the snow is falling.

The RTHC by Honeywell is a non-programmable digital thermostat with features including a large backlit display, displays of both room temperature and temperature setting and one-touch temperature controls. Remove cover and thermostat, but leave wallplate with wires attached. Leave wallplate in place. Is there a sealed tube containing mercury?

If so, see inside front cover of this manual for proper disposal instructions. Page 8 Installation Guide Identify wires you will not use If any wires are not attached to terminals in your old thermostat, do not connect them to your new thermostat. Wrap the bare metal ends of each unused wire with electrical tape, so it cannot touch and short out other wires. As you disconnect each wire, wrap it with the label matching the letter on your old thermostat.

Adhesive labels are supplied in your thermostat package. Remove the old wallplate only after all wires are labeled. Page 10 Installation Guide Remove wallplate Pull at bottom to remove thermostat from wallplate. Pull wires through wallplate. Level wallplate if desired 3. Mark positions of lay level across tabs. Use hammer to tap anchors into holes until flush with wall.

Place wallplate over anchors and insert screws. Check level if desired, then tighten screws. Match each labeled wire with same letter on terminal. Use a screwdriver to loosen screw terminals, insert wires, then tighten screws. Push any excess wire back into the wall opening. If labels do not match letters on thermostat, see next page. Page Less Common Wire Designations Installation Guide Connect wires less common wire designations If labels do not match thermostat letters, check the chart at right see notes, below.