T905
Installation Manual
Thermostat Application Guide
Description
Gas or Oil Heat
Electric Furnace
Heat Pump (No Aux. or Emergency Heat)
Heat Pump (With Aux. or Emergency Heat)
Multi-Stage Systems
Heat Only Systems
Cool Only Systems
Millivolt
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Power Type
Battery Power
Hardwire (Common Wire)
Hardwire (Common Wire) with
Battery Backup
Table of Contents
Installation Tips
Thermostat Quick Reference
Wiring
Wiring Diagrams
Technician Setup
Programming
Page
A trained, experienced
technician must install this
product.
Carefully read these
instructions. You could damage
this product or cause a
hazardous condition if you fail
to follow these instructions.
Una version en español de este
manual se puede descargar en
la pagina web de la compañia.
Rev. 1845
Mount Thermostat
Align the 4 tabs on the subbase with
corresponding slots on the back of the
thermostat, then push gently until the
thermostat snaps in place.
Battery Installation
Battery installation is optional if thermostat is
hardwired (R and C terminal connected to 24V
power).
Important:
High quality alkaline batteries are recommended.
Rechargeable batteries or low quality batteries
do not guarantee a 1-year life span.
Insert 2 AA
Alkaline batteries
(included). High
quality alkaline
batteries are
recommended.
Installation Tips
4
5
9-12
13-16
2-3
Installation Tips
Thermostat Quick Reference
Getting to know your thermostat
Glow in the Dark Light Button
Setpoint Buttons
LCD
The low battery indicator is displayed
when the AA battery power is low. If the
user fails to replace the battery within 21
days, the screen will only show the low
battery indicator but maintain all
functionality. If the user fails to replace
the batteries after an additional 21 days
(days 22-42 since first “low battery”
display) the setpoints will change to 55˚F
(Heating) and 85˚F (Cooling). If the user
adjusts the setpoint away from either of
these, it will hold for 4 hours then return
to either 55˚F or 85˚F. After day 63 the
batteries must be replaced immediately to
avoid freezing or overheating because the
thermostat will shut the unit off until the
batteries are changed.
Important
Gently slide a screwdriver into the
bottom edge of the badge. Gently turn
the screwdriver counter clockwise. The
badge is held on by a magnet in the well
of the battery door. The badge should pry
off easily.
DO NOT USE FORCE.
About The Badge
All of our thermostats use the same
universal magnetic badge. Visit the
company website to learn more about
our free private label program.
Magnet in door
Use the bevel on lower ridge
Subbase Installation
The thermostat should be installed approximately 4 to 5 feet above the
floor. Select an area with average temperature and good air circulation.
• Close to hot or cold air ducts
• That are in direct sunlight
• With an outside wall behind
the thermostat
• In areas that do not require
conditioning
• Where there are dead spots
or drafts
(in corners or behind doors)
• Where there might be
concealed chimneys or
pipes
Wall Locations
Vertical Mount
Horizontal Mount
For vertical mount put one screw on the top
and one screw on the bottom.
For horizontal mount put one screw on the
left and one screw on the right.
All of our products are mercury free.
However, if the product you are
replacing contains mercury, dispose of
it properly. Your local waste
management authority can give you
instructions on recycling and proper
disposal.
Pick an installation location that is easy for
the user to access. The temperature of the
location should be representative of the
building.
Installation Tip
Mercury Notice
Do not install
thermostat in locations:
Failure to disconnect the power before
beginning to install this product can
cause electrical shock or equipment
damage.
Installation Tip:
Electrical Hazard
U.S. Registered Trademark. Patents pending
Copyright 2018 All Rights Reserved.
6-8
Days of the week and time
System Button
Menu Button
Fan Button
Indicates the current room
temperature
Displays the user selectable
setpoint temperature
Hold is displayed when thermostat
program is permanently overridden.
System Operation Indicators:
The
compressor delay is active if these are
flashing.
Programmable Time Periods:
Residential uses 4 time periods -
WAKE, RETURN, LEAVE
and
SLEEP
.
Program Menu Options:
Shows
different options during programming.
Low Battery Indicator:
Replace
batteries when this indicator is shown.
Specifications
The display range of temperature ................. 41˚F to 95˚F (5˚C to 35˚C)
The control range of temperature...................44˚F to 90˚F (7˚C to 32˚C)
Load rating..............................................................1 amp per terminal, 1.5 amp
maximum all terminals combined
Swing (cycle rate or differential) .................... Heating is adjustable from 0.2˚ to 2.0˚
Cooling is adjustable from 0.2˚ to 2.0˚
Power source .........................................................18 to 30 VAC, NEC Class II, 50/60 Hz
for hardwire - Battery power from
2 AA Alkaline batteries
Operating ambient ............................................ 32˚F to +105˚F (0˚C to +41˚C)
Operating humidity .......................................... 90% non-condensing maximum
Dimensions of thermostat .............................. 4.7”W x 4.4”H x 1.1”D
9
1
7
Clean Display:
Pressing
CLEAN
DISPLAY
will allow 30 seconds to
clean the display. The keys will be
inoperable during this time.
CLEAN
will appear if your contractor has
programmed a filter change reminder.
Press and hold
CLEAN
when filter
has been replaced to reset the filter
change reminder timer.
9
2
8
3
Temperature
Temperature
Pro1 Technologies
Toll Free: 888-776-1427
Web: www.pro1iaq.com
Hours of Operation: M-F 9AM - 6PM Eastern
P.O. Box 3377
Springfield, MO 65808-3377
