Honeywell Home RTH2510 User manual

RTH2510/RTH2410
Programmable Thermostat
Quick Installation Guide
69-2421ES-05
M38852
Heat Off Cool
Auto On
Fan
Set
Hold
Run
Fr
Return
pm
Cool
72
On
6:30

69-2421ES—05 ii
Quick Installation Guide
Identify System Type
This thermostat is compatible with the following sys-This thermostat is compatible with the following sys-
tems:tems:
• Gas, oil or electric furnace
• Central air conditioner
• Hot water system with or without pump
• Millivolt system
• Central heating and cooling system
• Heat pump without auxiliary/backup heat
• Heat pump with auxiliary/backup heat
Do you need assistance?
We are here to help.
Call 18004681502.
This thermostat cannot be used on multistage
systems.

1 69-2421ES—05
RTH2510/RTH2410
1Turn Off Power to Heating/
Cooling System
M38853

69-2421ES—05 2
Quick Installation Guide
M28099A
Old thermostat
Cover
Remove old thermostat but leave wallplate with
wires attached.
Remove Old Thermostat
Do not remove
wallplate yet
MERCURY NOTICE
Do not put your old thermostat
in the trash if it contains
mercury in a sealed tube.
Contact your local waste
management authority
for instructions regarding
recycling and proper disposal.
2

3 69-2421ES—05
RTH2510/RTH2410
M29988A
If any wires are not attached to your old thermostat or
are attached to a terminal marked Cor C1, they will not
be connected to your new thermostat. Wrap the bare
metal end of each of these wires with electrical tape, so it
cannot touch and short other wires.
Identify Wires
Disconnect wires and remove the old wallplate only after
all wires are labeled. Wrap the wires around a pencil to
prevent them from falling though the wall opening.
Do not use non-connected
wires.
Do not use C or C1 wires.
Identify and label each wire.
IGNORE WIRE COLORS:
Use terminal screw
designations to identify
wires.
3

69-2421ES—05 4
Quick Installation Guide
Mount New Wallplate
1. Loosen the locking screw at the bottom of the
thermostat. Note that the screw is captive and cannot
be removed from the wallplate.
2. Separate the thermostat from the wallplate as per
Figure 1.
3. Position the wallplate against the wall and mark hole
positions with a pencil.
NOTE: Levelling is for esthetics only and will not affect
the performance of the thermostat.
4. Drill holes at the marked positions and insert supplied
wall anchors.
5. Pass the wires through the large opening located at the
bottom center of the wallplate as per Figure 2.
6. Secure the wallplate to the wall with supplied mounting
screws as per Figure 3.
7. Connect the wires to the terminals.
4
Figure 1 Figure 2 Figure 3
M38857
UP
UP

5 69-2421ES—05
RTH2510/RTH2410
1. Match each labeled wire with the terminal having the
same letter.
Connect Wires:
Conventional Systems
(typical wiring)
2. Loosen the terminal screws using a screwdriver, insert
the wires, then tighten the screws.
3. Push any excess wire back into the wall opening.
Labels don’t match? See page 6.
Have a heat pump with auxiliary/backup heat, see pages 78.
• Call 18004681502 for wiring assistance
5
O/B Y RC R G W/AUX
M32148A
REMOVE JUMPER
IF
YOU HAVE BOTH
R
AND RC WIRES

69-2421ES—05 6
Quick Installation Guide
Connect Wires:
Conventional Systems
(alternate wiring)
5
M32149B
REMOVE JUMPER BETWEEN RAND RC IF YOU HAVE
WIRES ON BOTH RAND RC.
DO NOT USE C, C1, OR X WIRE. DO NOT USE B WIRE
IF YOU ALREADY HAVE 0 WIRE. WRAP BARE END OF
WIRE WITH ELECTRICAL TAPE.
PLACE A JUMPER (PIECE OF WIRE) BETWEEN Y AND
W/AUX IF YOU ARE USING A HEAT PUMP WITHOUT
AUXILIARY/BACKUP HEAT.
1
2
3
O/B Y RC R G W/AUX
2 33
1
OR
C1
X
B
OR
B
H
OR
Y1
M
1
OR
RH
4
V
OR
F
OR
W1
H
1
OR
R

7 69-2421ES—05
RTH2510/RTH2410
1. Match each labeled wire with the terminal having the
same letter.
Connect Wires: Heat Pump
Systems with Auxiliary/Backup
Heat (typical wiring)
2. Loosen the terminal screws using a screwdriver, insert
the wires, then tighten the screws.
3. Push any excess wire back into the wall opening.
Labels don’t match? See page 8.
5
M32150
A
O/B Y RC R G W/AUX

69-2421ES—05 8
Quick Installation Guide
Connect Wires: Heat Pump
Systems with Auxiliary/Backup
Heat (alternate wiring)
5
M32151B
O/B Y RC R G W/AUX
LEAVE JUMPER IN PLACE, CONNECTING R AND RC.
THIS THERMOSTAT CANNOT BE USED IF YOUR OLD THERMOSTAT
HAD ANY TWO OF THE FOLLOWING WIRES R, RC, V, OR VR.
DO NOT USE C OR X WIRE. DO NOT USE B WIRE IF YOU ALREADY
HAVE O WIRE. WRAP BARE END OF WIRE WITH ELECTRICAL TAPE.
DO NOT USE L WIRE. WRAP BARE END OF WIRE WITH ELECTRICAL
TAPE.
IF YOUR OLD THERMOSTAT HAD SEPARATE O AND B WIRES, WRAP
THE B WIRE IN ELECTRICAL TAPE AND DO NOT CONNECT.
IF YOUR OLD THERMOSTAT HAD Y1, W1 AND W2 WIRES, STOP NOW
AND CONTACT A QUALIFIED CONTRACTOR FOR HELP.
IF YOUR OLD THERMOSTAT HAD E AND AUX WIRES (OR
ALTERNATE WIRES), CONNECT BOTH WIRES TO AUX TERMINAL.
1
2
3
4
5
6
7
7435
1
OR
X
X2
OR
F
OR
X
B
OR
B
H
OR
Y1
M
2
OR
RC
V
VR
OR
F
OR
W
W1
W2
6 7