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Wiring a thermostat

How do I wire a RTH6300B thermostat i only have 2 wires 1 W and 1 R

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  • bdmocklin Jul 06, 2008

    6 wires 5 connections

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What kind of system are you hooking it to? heat pump or heat/ac?

Posted on Mar 08, 2008

  • TERRI RODDEN
    TERRI RODDEN Mar 08, 2008

    there should be a jumper on the terminal between the R and Rc .. leave in place .. if this is not a heat pump .. connect the W to the W and the R to the R.

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Replacing double pole 220 v with honewell ct410a two wire120/140v wiring diagram not clear


1 power wire (120v) will go to the thermostat and 1 power wire (120v) will go directly to the unit. The other wire on the unit will go to the other side of the thermostat. The safety precaution behind using a single pole to replace a double pole contactor is that you will always have 1 leg of power going to the unit. Many systems are designed like this from the factory, but it is always better to have a 2 pole to cut all power off to the unit unless it's in operation. The unit will still not work as long as it does not have both legs of power.
L1 to Thermostat T1 to Unit
L2 and T2 wired together.

This is only for 240v systems. 120v Will have 1 common and 1 power, therefore you will need to know which wire is which. Power to thermostat, common wired direct.

Nov 26, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

Changing double pole thermostat to 2 wire 240 volts


Wire nut one leg (the 2 wires of the first pole), & use the thermostat to complete the circuit (the 2 wires of the second pole).

Nov 26, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

I just purchased a house with brand new furnace wired to a RTH2300 Honeywell thermostat. It only has two wires running to it. I can't seem to get it to work in "manual mode"-where I set it on...


?? Connect Wires 5.

Labels don't match?

If a wire does not match any terminal on the thermostat,

see next page.

Quick Installation Guide

6

Alternate Wiring

If a labeled wire does not match any terminal

designation, see diagram below.

Do not use C, C1 or X wire. Do not use B wire if you already

have O wire. Wrap bare end of wire with electrical tape.

This thermostat cannot be used if your old thermostat had

any two of the following wires: R, RC, RH, 4 and V.

Place a jumper (piece of wire) between Y and W if you have

a heat pump without auxiliary/back-up heat.

?? Connect Wires (cont'd)

Programmable Thermostat RTH2300

7

Set jumper JP1, on the back of the thermostat, if you

have connected a wire to the G terminal.

Incorrect jumper setting: An incorrect setting is

noticeable in a gas or oil heating system. When heating

starts, you will initially feel cold air coming out of the vents

as the fan is running before the furnace has enough time

to heat up the air.

?? Set Heating Fan Control 6.

HG Leave the jumper in this factory-set

position if you have a gas or oil furnace.

HE Place the jumper to this position if you

have an electric furnace.

JP1

Quick Installation Guide

8

Set jumper JP2, on the back of the thermostat, if you

have a heat pump.

Incorrect jumper setting: The heat pump operation

will be reversed, i.e., it will cool in Heat mode and will

heat in Cool mode.

?? Set Heat Pump Reversing Valve 7.

O Leave the jumper in this factory-set

position if you have connected O wire to

the O/B terminal.

B Place the jumper to this position if you

have connected B wire to the O/B terminal.

JP2

Programmable Thermostat RTH2300

9

1) Install 2 AAA

batteries on the

back of the

thermostat.

2) Align the two

brackets on the

top of the

thermostat with

the corresponding

slots on the top of

the wallplate.

3) Push the

thermostat

against the

wallplate.

4) Tighten the screw

at the bottom of

the thermostat.

5) Turn power back

on at the heating/

cooling system.

Nov 27, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

With fresh batteries, the thermostat works fine, but after two or three days, the thermostat fails to turn on the furnance after the temp drops below the setting. Replace the batteries, and it works for a...


If you have a spare wire (unused) in the thermostat wire sheath you can eliminate the batteries as the power source.
Turn off the power to the furnace.
Open the thermostat and look for terminal "C". If it is not being used,then
look inside the furnace for the thermostat wire terminals. Black or blue are probably not being used. Take one of these wires and strip insulation back 1/2 inch. Connect this wire to the COMMON (C)(-)wires from the low voltage transformer.
Open the thermostat and connect the same wire to the "C" terminal on the thermostat.

Dec 22, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

I'm replacing an old thermostat with a new Honeywell RTH6300B programmable. I have propane heat and central AC. My old thermostat has a black, a red and a yellow leads with no ID on the old thermostat wall...


Open up the propane furnace and see what color wires are hooked to the gas valve or circuit board. If it has a circuit board, note which color is on the R terminal and W terminal, Connect the the thermostat the same way. Most likely the yellow wire powers your A/C so you can hook that one to the Y terminal.

Nov 27, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

I have a honeywell thermostat model # th5220d1003-0636 & need to know what connections to make for gas forced air heat.


This is a Focus Pro 2 heat,2 cool thermostat. If you are connecting this to a single stage(1 heat) residential furnace then your connections are: At the thermostat the R and Rc therminals are internally connected so you can connect your R terminal wire from the furnace to the R terminal at the thermostat(this is your 24 volt supply for both heating and cooling. The W or W1 wire (heating) from your furnace you connect to the W1 terminal at the thermostat. The W2 wire from your furnace(if your furnace is a 2 stage furnace) you connect to the W2 terminal at the thermostat. The G wire from your furnace(indoor fan) you connect to the G terminal at the thermostat. The Y1 wire(cooling) from your furnace you connect to the Y1 terminal at the thermostat. The C wire(common or neutral) from the furnace you connect to the C terminal at the thermostat.

Nov 14, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

I bought a Honeywell programmable thermostat RTH2310 to replace my 10 year old Honeywell thermostat. My old thermostat is a 4 wire system but also has a jumper from Y to 1. New system does not tell me what...


It depends on the type of thermostat you have.
Do you have a 4 wire or 5 wire T'stat?
The red jumper wire was for a 5 wire t'stat with 1 transformer, the red jumper actually should have been from R to 1.
So you need to trace the wires back to the furnace and make sure they go to the locations identified below.
if you have a 4 wire t'stat then you don't need that jumper, if you have a 5 wire t'stat then you do need that jumper but it should go from Rh to Rc.
4 Wire Termostat
R = Red One Side of 24 volt Transformer
G = Green Blower
Y = Yellow Cool
W = White Heat
5 Wire Thermostat
with one transformer for both units
Rc One Side of 24 volt Transformer
Rh Jumper Rc to Rh
G = Green Blower
Y = Yellow Cool
W = White Heat
t'stat?

Nov 14, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

I am trying to install a fahrenheat f2543 heater with a fta2a double pole thermostat. there is a 12/2 wire coming into where the heater is being installed. how do i connect the red and black to the white...


Hi, this is very easy for you to do.The 12/2 Romex wire coming in is the power which you know. What you do need to know, is the voltage coming in? Sometimes they will use 12/2 Romex with ground for 220, 240, operation. You need to know if the T-stat is Line voltage 220, or 240 volt. You have to have the same voltage for both for it to control. Reguardless of the voltage, lets say it is in the 220 and up range. You take one of the 12/2 wires, white or black and hook it to the black or red on the T-stat and the white to the other one, red or black. Thats it, you are done! If the T-stat is 2-pole I am sure it is a high, Line votage T-stat. Best of Luck,
Shastalaker7

Nov 09, 2009 | Fahrenheat Built-In Baseboard Thermostat...

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