Honeywell RTH8500D - 7-Day Touchscreen Universal Programmable... User manual

OWNER’S GUIDE
U.S. Pat. 6,595,430
Other Patents Pending
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved 69-1725-1
RTH8500D Touch Screen
Programmable Thermostat
The RTH8500D Thermostat provides electronic control of 24 Vac heating and
cooling systems or 750 mV heating systems.
For assistance with your Honeywell product, please visit
www.honeywell.com/yourhome or call Honeywell Customer Care
toll free at 1-800-468-1502.
Read and Save these Instructions

69-1725-1 2
Contents
Prepare for Installation................................................................... 3
Follow Important Instructions......................................................... 5
Remove Old Thermostat................................................................ 6
Follow Special Instructions ............................................................ 7
Label Old Thermostat Wires .......................................................... 10
Mount New Wallplate to Wall ......................................................... 11
Connect Wires to New Wallplate ................................................... 15
Install Batteries .............................................................................. 22
Attach New Thermostat to Wallplate.............................................. 23
Set the Calendar............................................................................ 24
Configure Installer Setup ............................................................... 26
Get to Know Your Thermostat Display........................................... 38
Set System Setting ........................................................................ 40
Program Your Heating and Cooling Schedule ............................... 42
Cancel a Schedule Period ............................................................. 46
Set Time ........................................................................................ 47
Set Temperature Overrides............................................................ 48
Clean Your Thermostat Screen ..................................................... 51
Use Your Filter Timer ..................................................................... 52
Understanding Temperature Recovery Feature............................. 53
Replace Batteries .......................................................................... 54
Review Battery Tips....................................................................... 57
Built-in Compressor Protection...................................................... 58
Troubleshooting Tips ..................................................................... 59
Customer Assistance..................................................................... 62
Limited One-Year Warranty ........................................................... 63

3 69-1725-1
Step 1. Prepare for Installation
1. Check that the following items are included:
If any of the items shown above are missing, call
Honeywell Customer Care at 1-800-468-1502
before returning the thermostat to the store.
CAUTION
TURN OFF POWER to system at the furnace, or at the fuse/circuit
breaker panel before you begin.
Match the letter of
y
our old thermostat wire with the terminal of th
e
correspondin
g
letter on
y
our new thermostat or base
.
N
69
-
08
2
3
EF
S
5
-
03
•
y
ou
rh
o
m
e
B
G
R
V
/
V
R
X
B
G
R
V
/
V
R
X
Y
2
H
R
C
W
X1
Y
2
H
R
C
W
C
L
RH
W1
X2
C
L
RH
W1
E
O
T
W2
Y
E
O
T
W2
F
P
U
W
3
Y1
F
P
U
W
3
WALLPLATE
THERMOSTAT
M222
00
MOUNTING SCREWS (2)
AND WALL ANCHORS (2)
OWNER'S GUIDE
CAUTION CARD
WIRE LABELS
Read and save these instructions
OWNER'S GUIDE
Inside Set To
de la letra corres
p
ondiente d
e
Set
Inside

69-1725-1 4
Step 1. Prepare for Installation (Cont)
2. Check that you have everything required for the installation:
• Three AAA alkaline batteries
• No. 2 Phillips screwdriver and standard pocket screwdriver
• Drill
• Drill bit — use 3/16 in. for drywall; use 7/32 in. for plaster
• Level (optional)
• Hammer
• Pencil
• Electrical tape

5 69-1725-1
Step 2. Follow Important Instructions
1. Do not connect the wires to the new thermostat based on wire
color because damage can occur to the heating and/or cooling
system.
These Installation Instructions explain later how to use the
enclosed wire labels to correctly mark the wires connected to
your old thermostat.
M22034
Y
G
RC
W
OLD THERMOSTAT
RED
WHITE
YELLOW
ORANGE
GREEN
!
DO NOT WIRE
NEW THERMOSTAT
BASED ON
WIRE COLOR.
R

69-1725-1 6
Step 3. Remove Old Thermostat
1. Turn off power at the heating and/or cooling system or
fuse/circuit breaker panel.
2. Remove the cover from the old thermostat.
3. Remove the old thermostat from the wall or wallplate. Do not
remove the wires.
MERCURY NOTICE
If you are replacing a thermostat that contains mercury in a sealed
tube, do not place your old thermostat in the trash.
Contact your local waste management authority for instructions
regarding recycling and the proper disposal of an old thermostat
containing mercury in a sealed tube.
Y
G
C
R
W
OLD THERMOSTAT
.18
.2
.25 .3
.9
.7
.5
.4
L
O
N
G
E
R
THERMOSTAT
COVER
WALLPLATE
M22036

7 69-1725-1
Step 4. Follow Special Instructions
1. If you have two C and/or C1 wires connected to your old
thermostat, do not connect them to your new thermostat.
2. Disconnect the C and/or C1 wires. Make sure they do not touch
each other or any other wires.
3. Wrap the bare end of each C and/or C1 wire with electrical tape.
Y
C
C
R
W
OLD THERMOSTAT
WIRE HOLE
M22201
DO NOT CONNECT TO NEW
THERMOSTAT
WIRE
SCREW
TERMINAL
LETTER
DESIGNATION
G

69-1725-1 8
Step 4. Follow Special Instructions (Cont)
4. If you have only one C and/or C1 wire connected to your old
thermostat, connect this wire to C on the new thermostat.
Visit www.honeywell.com/yourhome or call Honeywell
Customer Care at 1-800-468-1502 before returning the
thermostat to the store.
Y
C
R
W
OLD THERMOSTAT
WIRE HOLE
M22223
CONNECT TO THE "C" ON THE
NEW THERMOSTAT
WIRE
SCREW
TERMINAL
LETTER
DESIGNATION
G

9 69-1725-1
Step 4. Follow Special Instructions (Cont)
5. If you find any wires not connected to your old thermostat, do
not connect them to your new thermostat.
6. Wrap the end of the wires that are not connected with electrical
tape.
Y
G
RC
R
OLD THERMOSTAT
WIRE HOLE
WIRES NOT CONNECTED –
DO NOT CONNECT TO
NEW THERMOSTAT M22040
WIRE
SCREW TERMINAL
LETTER DESIGNATION
W

69-1725-1 10
Step 5. Label Old Thermostat Wires
1. As you disconnect each wire, use the enclosed wire labels to
wrap a wire label around each wire that matches the letter
designation. Do not allow the wires to fall into the wall opening
after the wires are disconnected.
2. Remove any remaining part of the old thermostat from the wall.
When connecting the wires to the new thermostat, refer to
the wire labels. Do not connect wires to your new thermostat
based on the color of the wire.
Y
G
RC
R
OLD THERMOSTAT
WIRE HOLE
M22039
WIRE
SCREW
TERMINAL
LETTER
DESIGNATION
WIRE LABEL
W
W
G
Y
R
RC