UPM HTM621 User manual

Model No.
HTM621
Programmable Thermostat
For Electric Baseboard Heaters
High VOLTAGE
120 V/ 240 V AC, 60 Hz
Ref: HTM621 UPM BRAND

Features:
Ideal for electri c baseboards, fan assisted (conve ctors) and radiant ceil ing heating
7-day program ming with 4 program s per day
Copy one day’s program to anothe r day
Temperature display and program ming in Celsius or Fahrenheit
Precise temperature control, set in half de gree s
Temperature override preven ts other users from increasing temperature, in order to better manage heating costs
Selectable cycle rates for energ y-eff icient heating, precise heating (Variance 0.6 °F [0.3 °C])±
TRIAC system (Quiet operation)
Usage monitor tracks accu mulated heating “ON ” time
12- or 24-ho ur hou r clock display
Simple two-wire installati on
LCD back light
SPECIFICA TIONS
Rating: 120 V/240 V AC, 60 Hz
Max. load: 16.6 A
4000 W @ 240 V or
2000 W @ 120 V
Min. load: 500 W @ 240 V
* NOT FOR USE WITH
LOW VOLTAGE (24 V) CENTRAL HEATING
& AIR CONDITIONNING SYSTEMS &
WALL MOUNTED FURNACES.
Hardware included:
- 2 Screws
- 2 Wire Nuts

Table of Contents
Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
LCD Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Button Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Set °C or °F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Program Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Copy Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
High-Limit Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Temporary Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Usage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Memory Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Thermostat Surface Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Option Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pre-comfort Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Heating Cycle Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Setting of High-Limit Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-27
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1

Installation
instructions
2

Introduction
This thermostat is for use with high voltage systems (120 V/240 V) such as electric baseboards,
radiant ceiling/floor heaters and convectors ONLY. The unit is rated for high-voltage wiring only
(120 V / 240 V). The minimum load requirement is 500 W. NOT for use with low voltage (24 V)
central heating & air conditioning systems & wall-mounted furnaces.
Warning
THIS PRODUCT MUST BE INSTALLED IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, AND IN QUEBEC, BY A QUALIFIED ELECTRICIAN.
The manufacturer assumes no responsibility for damages caused by improper wiring.
Improper installation automatically voids the warranty.
3

HEATING SYSTEMS
Central Heating Furnace System(24 V)
COMPATIBILITY
No
COMPATIBILITY
Generally, equipment with high-voltage control is only compatible with the electric baseboards,
convectors or radiant heating systems.
Warning
DO NOT WIRE TO A SYSTEM EXCEEDING 16.6 A (4000 W @ 240 V, 2000 W @ 120 V)
4
Electric Baseboard Heater (120V/240 V)
Fan Assisted (Convectors)
Electric Radiant Ceiling Heater
Heat Pump
Yes
Yes
Yes
Electric Radiant Floor Heater
No
No

Thermostat should be mounted:
on the existing metal electrical box that controls your heater.
Note: Ensure that the thermostat is not near heat sensitive / flammable material such as exposed wood
or wallpaper. The normal surface temperature of the thermostat is 113° to 122°F (45° to 50°C)
while in operation. The thermostat is rated to operate safely at these temperatures, but should be
kept away from fire hazards.
For NEW home installation, the metal electrical box and thermostat should NOT be mounted:
near temperature-radiating objects that may cause false readings
(For example: in front of a window, next to a door leading outside, or near the heat from a lamp,
direct sunlight, or a fireplace)
near concealed pipes and chimneys.
in areas with poor air circulation, such as behind a door or in an alcove.
5
Choosing a location

6
INSTALLATION
THIS PRODUCT MUST BE INSTALLED IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, AND IN QUEBEC, BY A QUALIFIED ELECTRICIAN.
The manufacturer assumes no responsibility for damages caused by improper wiring.
Improper installation automatically voids the warranty.
Before installation:
Verify that the heating appliance that is being connected is within the specified load range.
Ensure that the new thermostat is rated for 120 V / 240 V.
Ensure that the heating system is protected by appropriate circuit breakers or fuses.
Connect to COPPER conductors only.
TO AVOID FIRE, SHOCK, OR DEATH, SHUT OFF POWER SUPPLY
AT THE CIRCUIT BREAKER OR FUSE, AND TEST THAT THE POWER IS
OFF BEFORE WIRING.
*

7
INSTALLATION
Mount the thermostat to the wall box using two screws
through the mounting holes, and then replace the
faceplate. (Place screws in the 2 right or 2 left holes.)
Using the wire nuts provided, securely fasten each
wire from the new thermostat to the live wires in the
wall box. Refer to the diagram.
NOTE: ENSURE THAT NO BARE WIRE IS EXPOSED.
Remove the old thermostat carefully, and identify the
two wires from the wall box.
Reconnect power supply.
1
2
3
4
4-WIRE INSTALLATION:
Metal Wall Box
Electric
Heater
25.8
23.0
8:15
PM
*120 V / 240 V AC Lines
Wire Nut Wire Nut
Wire Nut
Bypass
Connect
Gently remove the faceplate from the right side of the
new thermostat, but DO NOT remove the screws
from the back of the unit, because these screws hold
the thermostat together.
5
* Remove Faceplate
To remove the
faceplate, gently
pull the right side of
the thermostat.
The faceplate should
come off easily.
*Note: If there are 4 wires connected to the old thermostat,
the 2 extra wires should be connected together using a wire
nut (not supplied). HOLD USAGE PROG
COPY DAY S ET
RESET

8
If you have successfully installed the thermostat, but the LCD screen does not display or
the display seems abnormal, press the RESET button. (The reset button must be pressed in gently using
a small blunt object.)This will revert the clock to 9:00 a.m. Monday morning.
NOTE: To restore programs and options to factory defaults, see page 18.
RESET
2
BACKLIGHT
This unit comes equipped with a backlight that will light up the screen for a few seconds any time a button
is pressed. The backlight might not come on if there is ample light in an
extended power outage. Following a period without power, the thermostat will use power to recharge
a back-up battery. Once this battery is recharged, the backlight will work again.
room, or just after installation or