Maxitrol TDFM44 Installation Manual
TDFM44
OWNER’S MANUAL
Table of Contents
3
Installation
Operation (Programming)
Features
System Selector Switches
Connecting Wires and Mounting Thermostat
Programming/Setting Clock
Personal Program Schedule
Reviewing Program Settings
Manual Override
Backlighting
Trouble Shooting Guide
Wiring Diagrams 27
6
10
10
12
15
21
22
25
26
Read This Before Installing Thermostat
4
IMPORTANT
Read the entire installation section of
this Owner’s Manual thoroughly before
1
you begin to install or operate your Maxitrol
Thermostat.
Remove the mylar label from the display
window.
INSTALLA TION
All installation is normally performed at
your thermostat.
2
PROGRAMMING
You can practice programming before
3
installing your thermostat by inserting
and connecting the batteries and following
the instructions on page 10.
OPERATION
Y our Maxitrol Selector is designed to
operate with DFM/DFME 44 systems only.
4
TEMPERATURE RANGE
Y our Selector can be programmed
between 40°F and 95°F (5°C and 35°C).
5
However, it will display room temperatures
from 32°F to 99°F (0°C and 37°C).
BATTERY WARNING
When the batteries are low, the “LOW
BATT” indicator on the display will flash.
6
When this hapens, install new batteries
immediately. Once the “LOW BATT”
indicator appears, the thermostat will
continue to operate for approximately 30
days. (Only alkaline batteries should be
used in your thermostat. Rechargeable
batteries have different properties which
may cause the thermostat to not operate
properly. Do not use old batteries.) The
batteries should last one year.
CAUTION: The batteries are the only source of power used to
operate your thermostat. If you do not replace the batteries, the
display will dim and your system will operate on the last
programmed temperature or the factory default.
NOTE: If you plan to be away from the premises more than 30
days, we recommend that you replace the old batteries with new
alkaline batteries prior to leaving.
5
Features
M T W TH F SA SU
AM
PM
88:88 88
LO BAT
SET
Individual
pushbuttons for
raising or lowering
temperature settings.
TEMP
6
1
2
4
3
Display shows time, day, temperature, program number,
C
hold, usage and low battery indicator.
HOLD
TEMP
Display backlight for viewing in the dark.
Reset button for resetting
computer back to
LIGHT
1 OFF 2
F C
12:00A.M. and clearing all
programs.
Manual switches
Customer Auxiliary Switch
Manual switches for F°/C°
Soft touch programming
buttons (see below)
Battery door for easy access.
For entering
hour of day.
For entering minute of day.
7
For entering day of week.
For reviewing
and changing
weekday or
weekend
programs
Picks the
day/days
for
programs
HOUR MIN
PROG
PROGRAM
PROG
DAY
Automatically
programs thermostat
for weekday and
weekend program
settings.
Provides permanent
temperature setting by
overriding stored programs.
Also, clears manual override
and returns to current program.
AUTO
HOLD/
CLEAR
DAY
12/24 HRS
RETURN
Returns display
to current time
and temperature.
Changes
the clock
into 12 or
24 hour
(military)
mode.
Installation
What You Need
This thermostat comes with two #8 slotted screws and two wall anchors for mounting. To
install your unit, you should have the following tools and materials.
Small slotted screwdriver
Hammer
Electric drill and 3/16” bit
Two 1.5V (AA) Size Alkaline batteries
8
9
Mount Wallplate & Thermostat
Snap open the wallplate from your thermostat by pressing the release tab on the bottom of
the thermostat.
Position wallplate on wall and pull wire with RJ45 connector and any additional wires through
large opening. Then level for appearance. Mark holes for plastic anchors provided.
Drill holes with 3/16” bit and gently tap anchors into the holes until flush with wall.
Reposition wallplate to wall, pulling wires through large opening. Insert mounting screws
provided into wall anchor and tighten. (See Figure 1.)
1
2
3
4
5
Figure 1
Installation
Selector Switches
The °F/°C selector switch is located on the front.
°F/°C selector (Fahrenheit/Centigrade)
Your thermostat is set for °F mode from the factory. In order to change to °C mode,
slide the switch to °C.
10
F
C
Connect Wires & Mount Thermostat Cover to Wall Plate
Insert RJ45 Connector.
If remote temperature sensor is used: remove existing RTD Sensor from Terminals 1 & 2 and
replace with remote temperature sensor wires.
Be sure to tighten the terminal screws securely, otherwise a loose wire could cause
operational problems with your system or thermostat.
Push excess wire back into hole to prevent interference with mounting of the thermostat cover.
Customer Choice switches are accessed through terminals 3, 4 & 5. Switch #1 is accessed
through terminals 3 & 4. Switch #2 is accessed through terminals 4 & 5, with terminal #4 being
common.
Insert the bottom tab on the thermostat body into the slot at the bottom of the wallplate. Press
top of the thermostat body to snap it into the wallplate. (NOTE: Do not force the thermostat
onto the wallplate, as the terminal pins may be damaged. If it does not snap properly,
the thermostat may not work.)
Insert the two AA size batteries, observing the polarity marked on the unit.
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