Noma 52-2546-6 User Manual

5+1+1 Day Programmable Thermostat

with outdoor temperature transmitter

Model No:
52-2546-6

Features:

5+1+1 day prog ramming (wee kdays +Sat+Sun) with 4 prog rams per day
Ideal for central heating f urna ce system s
Interf aces with hea ting /air conditioning system s for autom ati c tem perature control
Separate Heat/Co ol prog rams with buil t-in protection for t he ai r-con diti oner compressor
Interf aces with hum idifier f or autom atic hum idity con trol
Temperature display and prog ram ming in Ce lsius or Fahrenh eit
Precisi on temperature con trol, set in half de grees
Displays outdoor temperature from a remote trans mit ter
Selectab le cycle rates for more energy eff ici ent hea ting
Usage monitor - tr acks accu mulated heating “ON” time
12 or 24 hou r clock display
LCD display with bac klight
Furnace fil ter chan ge reminde r

Installation kit includes:

- 3 AA batteries

- Mounting hardware

SPECIFICATIONS
Rating: 24 V mil livolt hea ting system s

* NOT COMPATIBLE WITH ANY

HIGH VOLTAGE CIRCUIT

OR BASEBOARD HEATER

Table of Contents

Installation Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

System Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Fan Operation Jumper HE/HG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation and programming guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Unit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Full LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Set ºC or ºF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Program Heating / Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Temporary Override Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Hold Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Humidity Display / Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

HEAT / COOL switch / Fan Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Pre-comfort Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Usage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Filter Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Battery Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Outdoor temperature transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Option Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Installation

Guide

1

Installation Guide

Introduction

This thermostat can replace common residential thermostats and it is designed for use with
most central heating and air conditioning systems that use low voltage control. Please see
the compatibility chart on the next page for more details.

3 “AA” size batteries required (included)
Built-in protection timing for the air conditioner compressor

Warning

It is recommended to consult a wiring professional to ensure the safe installation of your thermostat.
The only way to guarantee wiring safety is to have a qualified professional on site. Since each
residence may be wired differently, UPM’s customer service line cannot offer any wiring advice.
UPM assumes no responsibility for customer errors in installation or wiring or any resulting damages.

* NOT COMPATIBLE WITH ANY HIGH VOLTAGE 120/240 VOLT CIRCUIT.

2

Compatibility

Generally, equipment with low voltage control is compatible with the Heating/Cooling Programmable
Thermostats.

System Type

Gas - Standing Pilot
Gas - Electronic Ignition
Gas - Fire Boiler
Gas - Millivolt System
Oil - Fire Boiler
Oil - Fire Furnace

Electric Furnace
Electric Air Conditioner
Baseboard Electric Heater (120/240V)

Heat Pump/Single-Stage (some models)
Heat Pump/Multi-Stage equipment

Compatible with Thermostat

Yes
Yes

Some models

Yes

Some models

Yes
Yes
Yes

No
No

No

* NOT COMPATIBLE WITH ANY HIGH VOLTAGE 120/240 VOLT CIRCUIT.

3

System Testing

It is very important that you fully test your heating, cooling and humidity equipment, both
before and after installing your new thermostat. The first test will determine if the equipment is
operational at the beginning of the process; the second test will ensure that the wiring and
installation were completed correctly.

It may be tempting to only test the heating equipment if you install the thermostat in the winter, or to
only test the air conditioning and humidifier if you install it in the summer. However it is highly
recommended to test all equipment at the time of installation.

SYSTEM TESTS: (BEFORE AND AFTER INSTALLATION)

- Make sure power is on for all heating and cooling appliances.

- Ensure the thermostat is switched to HEAT mode.

- Raise the temperature setting to see if furnace will activate. (May take up to 10 minutes)

- Ensure the thermostat is switched to COOL mode.

- Reduce the temperature setting to see if the air conditioner will activate.

(Note: Do not activate air conditioning if the temperature is below 10°C (50°F)
as this may damage the outdoor compressor.)

- Ensure the thermostat is switched to HEAT mode.

- Increase you humidity setting to see if the humidifier will activate.

- For heating systems with more than three wires, put the fan in the ON position.
(The fan should come on immediately.)

4

IMPORTANT - Get ting Started

C

%

C

C

%

C

Remo ve t he rm ostat backp la te a nd install 3 “AA” siz e ba tt eries (incl ud ed ).

** **

Ensu re t he b at teries are in st al led in the corr ec t di re ction for pol ar it y.
Ensu re t he H E / HG J UMPER is in the c or re ct position ( se e ne xt p age).

Remove Backplate

Front

HE
HG

JUMPER

COOLOFFHEAT

ON AUTO

SET

HOLD

PROG

USAGE

AHEAD

BACK

Back

Reset Button:
to restore
default settings

Install 3 AA Batteries

5

Fan Operation Jumper HE/HG

Depending on your home’s heating system you may need to
change the jumper setting for the fan operation. The jumper
is located on the back of the thermostat.

HG - Use this setting for gas and oil-fire powered furnaces.
This setting allows the fan operation to be controlled
by the heating system; not the thermostat. This is the
correct setting for most systems.

HE - Use this setting for electric powered furnaces. With this
setting the thermostat will turn on the fan immediately with the
heating system.

The jumper is pre-installed in the HG position as a factory default.
So there is no need to change the jumper if this setting is correct.

To change the jumper setting to the HE position, pull out the small black
rectangular block and align it to the new position and push it in fully.

JUMPER

6

HE
HG

Back

AFTER INSTALLING THE BATTERIES

CELSI US D EFAU LT; Sinc e Ce lsius ( °C ) is th e de fa ult m od e no acti on i s req ui re d to us e th e
therm os tat i n th is mode .

(°C or °F ) It i s VER Y IM PO RTA NT th at y ou choo se Fa hr enhei t (° F) be fo re y ou be gi n using t he
therm os tat . If y ou p roc ee d to se t th e cl ock a nd p rogra m se tti ng s wi th th e de fault C el siu s( °C )an d
THEN ch an ge to t he Fahr en hei t (° F) set ti ng: the c lo ck, p ro gr ams a nd a ll syst em s ett in gs w ill b e de leted .

(RESE T) I f the d is pl ay do es n ot ap pe ar a fte r in stall in g the b at te rie s, p ress th e re set b ut to n on th e
back of t he u nit .

SEE OPT IO N SEC TI ON: T he t hermo st at ha s a nu mb er of O PT IONS wh ic h the u se r ca n cha ng e.
(NOTE : *A dju st t he se se tt ing s be fo re pr og rammi ng t he th er mo sta t, b ecaus e ch ang in g ce rta in
optio ns w ill e ra se all pr og ram mi ng .)

7

Installation

The following tools may be required for installation:

( ) screwdriver

Masking Tape

(To wrap the exposed wires temporarily and to label
the disconnected wires)

Power drill with a 3/16” bit

(If necessary, to drill holes on the wall)

Level

(If necessary, to level the thermostat)

Wire Stripper/Cutter

(If necessary, to strip the wires)

3 “AA” size batteries (included)

-

“AA” SIZE

- +

“AA” SIZE

- +

“AA” SIZE

8

+

Choosing location for new thermostat

Thermostat should be mounted:
Approximately 5’ (1.5 m) from floor
Near or in a frequently used room, preferably on an inside partitioning wall
On a section of wall without pipes or duct-work

Thermostat should NOT be mounted:
Near a window, on an outside wall, or next to a door leading outside
Exposed to direct light or heat from a lamp, sun, fireplace, or other temperature-radiating objects
which may cause false readings
Near or in direct airflow from heat registers and air conditioners
Near concealed pipes and chimneys
In areas with poor air circulation, such as behind a door or in an alcove

Note: Do not operate the cooling system when outside temperature is below 10°C (50°F) to avoid
damaging the compressor.

9

Replacing old thermostat

Test the system to make sure that your heating and cooling systems are working properly
before installation. If either does not work, contact a heating/air conditioning service person
to fix the problem before installation.
TURN OFF POWER to system at the furnace, or at the fuse/circuit breaker panel.

Carefully unpack your new thermostat and mounting plate; save package of screws, instructions and
receipt. Remove cover from old thermostat. If it does not snap off when pulled firmly from the bottom,
check for a screw used to secure the cover. Loosen screws holding thermostat to the wall and lift
away the thermostat.

Wiring

NOTE: WIRING COLORS ARE NOT ALWAYS STANDARDIZED, SO IT IS VERY IMPORTANT TO
LABEL ALL WIRES ACCORDING THE LETTER DESIGNATION ON YOUR OLD THERMOSTAT.

(The wires are usually designated 'W', 'Y', 'G', 'RH', 'RC', 'W' ,'B', ‘O' or humidistat wires.)
Disconnect wires from old thermostat or sub-base. As you disconnect each wire, use masking tape
to label it with the old terminal designation.
Take care not to let the wires fall back into the wall or let the ends of the wires touch one another.
If there is an extra wire that is not connected to your old thermostat, then you won't need to connect
it to the new thermostat.

10

Connecting the wires to the terminals

Connect the previously labeled wires to the corresponding
terminals, matching the designations. Use a screwdriver
to loosen the terminal, wrap the wires around the terminal,
then tighten to securely fasten the wires. Make sure the
wires do not touch or short-circuit with other terminals.
After aligning the wires to the correct terminal push
excess wires back into the wall hole.

Depending on your heating/cooling equipment, you
may need to connect 2 to 7 wires to the thermostat.
If you have two ‘R’ wires, then connect each wire to
its corresponding terminal and remove the JUMPER
between the RC and RH terminals.
If you are unsure of the connections please consult
a certified electrician for the safe installation of your
thermostat.

11

e.g. (H 1, H2, W, Y, G, B, O, Rc, Rh )

Termin als
for w iri ng

Wires
fro m
the w all

Wire La bel s

Bac k Cover