Honeywell TH5220D User Manual

TH5220D
Non-programmable Digital Thermostat
Installation Guide
Product Application
This thermostat provides electronic control of 24 VAC single-stage and multi-stage heating and cooling systems, or 750 mV heating systems.
System Types (up to 2 heat/2 cool)
Gas, oil, or electric heat with air conditioning
Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity
Heat only — two-wire systems, power to open and close zone valves (Series 20), and normally­open zone valves
Heat only with fan
Cool only
750 mV heating systems
Power Options
Battery power only
Common wire only
Common wire with battery backup
Changeover Options
Selectable manual or auto-changeover modes
System Settings
Heat, Off, Cool,Auto, Em Heat
Fan Settings
Auto, On
Must be installed by a trained, experienced technician
Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition.
Check the ratings in this booklet to verify that this product is suitable for your application (see page 17).
Always test for proper operation after installation (see page 13).
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
1
Install the thermostat about 5 feet (1.5m) above the floor in an area with good air circulation at average temperature.
Do not install in locations where the thermostat can be affected by:
• Drafts or dead spots behind doors and in corners
• Hot or cold air from ducts
• Sunlight or radiant heat from appliances
• Concealed pipes or chimneys
• Unheated/uncooled areas such as an outside wall behind the thermostat
NO
NO
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Pre-installation checklist ................2
Wallplate installation ......................3
Wiring..............................................4
Wiring diagrams ..............................5
Power options ..............................10
Thermostat mounting ..................10
SSeettuupp aanndd tteessttiinngg
Installer setup................................11
Installer system test ......................13
Explanation of features ................14
AAppppeennddiicceess
Quick reference to controls..........15
Quick reference to display............15
Battery replacement......................15
In case of difficulty ......................16
Accessories/replacement parts ....17
Specifications ................................17
Table of contents
Installation tips
Installation Guide
2
Pre-installation checklist
Package contents
Check to make sure your package includes the following items:
Operating manual
Wall anchors and
mounting screws
(2 each)
AA alkaline
batteries (2)
FocusPRO
TH5220D
digital thermostat
(wallplate attached to back)
Required tools & supplies
No. 2 Phillips screwdriver
Small pocket screwdriver
Drill
Drill bit (3/16” for drywall, 7/32” for plaster)
Hammer
Pencil
Electrical tape
Level (optional)
FocusPRO™TH5220D Non-programmable Digital Thermostat
3
Remove the wallplate from the ther­mostat as shown at left, then follow directions below for mounting.
1 Pull wires through wire hole.
2 Position wallplate on wall, level and
mark hole positions with pencil.
3 Drill holes at marked positions as
shown below, then tap in supplied wall anchors.
4 Place wallplate over anchors, insert
and tighten mounting screws.
Insert finger into wire hole and pull to remove wallplate from thermostat.
Drill 3/16” holes for drywall. Drill 7/32” holes for plaster.
Wall anchors
Mounting screwsWire hole
Wallplate installation
Installation Guide
4
Wiring
1 Loosen screw terminals, insert
wires into terminal block, then re-tighten screws.
2 Push excess wire back into the
wall opening. Keep wires in shaded area as shown at left.
3 Plug the wall opening with non-
flammable insulation to prevent drafts from affecting thermostat operation.
Conventional
Heat Pump
NOTES
R & Rc terminals
In single-transformer system, leave metal jumper in place between R & Rc. Remove metal jumper if two-transformer system
.
C terminal
The C (common wire) terminal is optional when thermostat is powered by batteries.
W (O/B) terminal
If thermostat is configured for a heat pump in the Installer Setup, configure changeover valve for cool (“O” factory setting) or heat (“B”).
L terminal (Output)
Heat pump reset. L terminal powered contin­uously when thermostat is set to Em Heat. Configure thermostat for 2 heat / 1 cool heat pump in the Installer Setup.
Wire specifications
Use 18- to 22-gauge thermostat wire. Shielded cable is not required.
Keep wires in this shaded area
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before wiring.
Wiring
Terminal Designations
Conventional Terminal Letters: Y2 2nd stage compressor contactor W2 2nd stage heat relay G Fan relay W 1st stage heat relay C Common wire from secondary side of
cooling system transformer
Y 1st stage compressor contactor R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
Heat Pump Terminal Letters: L Heat pump reset. L terminal powered
continuously when System is set to Em Heat.
E Emergency heat relay Aux Auxiliary heat relay G Fan relay O/B Changeover valve for heat pumps C Common wire from secondary side of
cooling system transformer.
Y Compressor contactor R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
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