Nu-heat Ntg5110 User manual

NTG5110 & NTG5220 400-115-006-E 10/11/06 1/3

Nuheat’s NTG5110 & NTG5220 programmable thermostats can be

used to control the ambient air temperature or floor temperature. You

can select among the following temperature control modes:

Memory Backup:

In the event of a power failure, an internal circuit will maintain the pro-

gramming and time. However, the time will have to be re-set if the

power failure exceeds 6 hours.

Set the time using the Hour and Min buttons.

Set the day using the Day button.

Press Mode/Ret to exit.

The Comfort , Economy and Vacation settings respectively

represent the temperatures that you wish to have during the day ( ),

at night or while you are away at work ( ), or while you are away for

an extended period ( ).

This thermostat is pre-programmed with the following default Com-

fort, Economy and Vacation setpoints.

If the default temperature settings suit your personal preferences,

skip the following section.

To Modify the Default Setpoints:

To modify the Comfort temperature, select the desired

temperature using the buttons and hold the button until

the icon is displayed (app. 3 seconds).

To modify the Economy temperature, select the desired temper-

ature using the buttons and hold the button until the icon

is displayed (app. 3 seconds).

To modify the Vacation temperature, select the desired tempera-

ture using the buttons and hold the button until the

icon is displayed (app. 3 seconds).

Press the Mode/Ret button to exit this function and return to the

normal operating mode.

Description

A mode: controls the ambient air temperature

F mode: controls the floor temperature using an

external temperature sensor

AF mode: controls the ambient air temperature

maintains the floor temperature within desired

limits using an external temperature sensor

Operating Modes

MANUAL

Allows you to manually adjust the temperature set-

point.

To activate this mode, press Mode/Ret to dis-

play the icon.

Set the desired temperature using or

select one of the pre-programmed settings

( , or ).

AUTO

Executes the default schedule or your own pro-

gramming.

Use this mode to maximize energy savings. To

activate it, press Mode/Ret to display the icon.

The or icon indicates which temperature set-

ting is used. Also, the icon of the period number

will be shown. (i.e. )

Power On switch /

reset GFCI

Temperature

adjustment

Set programming

Select Operating

Mode / Return

Temperature

Operating mode icons

Period number

Comfort setpoint

Time and day

Heating indicator

Backlight button

Erase programming

Comfort, Economy

and Vacation icons

Appears when the

setpoint is displayed

Temperature control

mode icons

Ground fault

indicator

Lights up display, automatically turns off after 12 seconds

Set day

Set timeEconomy setpoint

Vacation setpoint

Time and Day Adjustment

Setpoint Configuration

Icon Setpoint F mode A/AF mode

Comfort 88 °F (31 °C) 70 °F (21 °C)

Economy 73 °F (23 °C) 63 °F (17 °C)

Vacation 50 °F (10 °C) 50 °F (10 °C)

NTG5110 & NTG5220

Homeowner’s Guide

Programmable Thermostats

NTG5110 & NTG5220 400-115-006-E 10/11/06 2/3

This thermostat is pre-programmed with the following default sched-

ule:

It applies to people who wake up at 6:00 AM, leave for work by 9:00

AM, return home for 5:00 PM and go to sleep at 11:00 PM.

If the pre-programmed schedule fits your lifestyle, skip the following

section.

First, program your schedule. You can program 4 different periods for

each day of the week. For each day, enter:

Press Pgm to access the programming mode. Period 1 is

displayed ( ).

Press Day to select the day to be programmed (hold for

3 seconds to select all days of the week).

NOTE: It is faster to program the same schedule for the entire week,

then modify the exception days (i.e. Saturday and Sunday).

Press Hour and Min to program the start time, OR

Press Clear to clear a time entry.

Press Pgm to select the next period.

Repeat steps 3 and 4 for remaining periods.

When you have completed your programming, press

Mode/Ret to exit the programming mode.

Programming Example:

This example applies to people who are home during the week.

• Comfort period from 6:00 AM to 11:00 PM (Period 1)

• Economy period from 11:00 PM to 6:00 AM (Period 4)

• Identical schedule for all days of the week.

Press Pgm to access the programming mode.

Period 1 is displayed ( ).

Press and hold Day for 3 seconds to select every day

of the week.

Press Hour to enter 6:00 AM for Period 1.

Press Pgm to select Period 2 ( ) and press Clear to delete

the time entry (- - : - -).

Press Pgm to select Period 3 ( ) and press Clear to delete

the time entry (- - : - -).

Press Pgm to select Period 4 ( ) and press Hour to enter

11:00 PM.

When you have completed your programming, press

Mode/Ret to exit the programming mode.

To modify the Saturday and Sunday Schedules:

When making modifications, make sure you are in the right period.

For example, if you are modifying the time for the time you wake up,

make sure you are in Period 1.

Press Pgm to select Period 1 ( ).

Press Day to select SA (Saturday).

Press Hour and Min to enter the time you wake up on week-

ends.

Press Pgm to select Period 4 ( ).

Press Hour and Min to enter the time you go to sleep on week-

ends.

Repeat above steps for Sunday (SU).

Press Mode/Ret to exit programming mode.

NOTE: To avoid damaging your floor, follow your floor supplier’s rec-

ommendations regarding the minimum and maximum floor tempera-

ture limits.

The minimum and maximum floor temperature limits are 5 °C (41 °F)

and 28 °C (82 °F) by default. To modify these limits, proceed as fol-

lows:

Switch the thermostat to Standby.

Press and hold the button.

Switch the thermostat back to On.

Release the button when the minimum temperature

limit (FL:LO) appears.

Set the minimum temperature limit using the

buttons.

Press the button to display the maximum

temperature limit (FL:HI).

Set the maximum temperature limit using the buttons.

Press Mode/Ret to exit.

Temporary or Permanent Temperature Bypass:

This operation allows you to temporarily modify the floor temperature

while you are in the Automatic mode.

• Simply press to select the desired temperature, or or

button to select the Comfort or Economy settings you have pro-

grammed.

This temperature will be maintained until the beginning of the

next programmed schedule.

• You can also switch to the Vacation setting for a prolonged

absence by pressing . In that case, the temperature bypass is

permanent.

To return to the normal operating mode, press Mode/Ret.

If you wish to immediately return to the programmed settings, press

Mode/Ret.

Default Schedule

Periods MON TUE WED THU FRI SAT SUN

88°F 6 AM 6 AM 6 AM 6 AM 6 AM 6 AM 6 AM

73°F 9 AM 9 AM 9 AM 9 AM 9 AM --:-- --:--

88°F 5 PM 5 PM 5 PM 5 PM 5 PM --:-- --:--

73°F 11 PM 11 PM 11 PM 11 PM 11 PM 11 PM 11 PM

Modify the Default Schedule

Time you wake up (Period 1)

Time you leave for work (Period 2)

Time you return home (Period 3)

Time you go to bed (Period 4)

Floor Temperature Limits (AF mode only)

Special Features

NTG5110 & NTG5220 400-115-006-E 10/11/06 3/3

Early Start Function:

This thermostat is equipped with a function that enables it to calcu-

late the optimum time to start the heating system to achieve the

desired temperature setting by the programmed time.

It could start the heating system as early as 6 hours prior if neces-

sary. Every day, the thermostat will automatically re-evaluate how

early to start heating, based on the previous day’s performance.

The switch on the back of the thermostat is factory-set to Early Start

ON. To disable this function, see the Switch Selection section.

Daylight Savings Time:

The thermostat can automatically re-adjust its time at Daylight Sav-

ings Time changeover.

Year 2006: When this function is enabled (On), the thermostat

switches to Daylight Savings Time on the first Sunday of April and to

normal time on the last Sunday of October.

Year 2007 and on: When this function is enabled (On), the thermo-

stat switches to Daylight Savings Time on the second Sunday of

March and to normal time on the first Sunday of November.

NOTE: The function is disabled (default setting) when the clock loses

its setting.

Press the Day button (3 seconds) until DLS appears

on the screen.

Press the to toggle between On (enabled) and Off

(disabled).

Press the Day button briefly. The year setting is dis-

played.

Press the to set the current year.

Press the Day button briefly. The month setting is dis-

played.

Press the to set the current month.

Press the Day button briefly. The date setting is dis-

played.

Press the to set the current date.

Press Mode/Ret to exit.

The thermostat can be configured with the following settings:

To Modify the Default Settings:

Locate the screw at bottom of thermostat. Unscrew.

Remove thermostat faceplate.

Locate the switches at the back of the faceplate. Set the

switches to your preferences.

Put the faceplate back on the thermostat.

Secure the thermostat with the screw.

Display range: 32 °F to 158 °F (0 °C to 70 °C)

Ambient setpoint range (A/AF models)

: 40 °F - 86 °F (5 °C to 30 °C)

Floor setpoint range (F model): 40 °F - 104 °F (5 °C to 40 °C)

Floor limit range (AF model): 40 °F - 104 °F (5 °C to 40 °C)

NUHEAT INDUSTRIES ONE (1) YEAR LIMITED WARRANTY

This product is guaranteed against workmanship defects for a

one-year period following the initial date of purchase. During this

period, NUHEAT will repair or replace, at our option and without

charge, any defective product which has been used under normal

conditions.

The warranty does not cover delivery costs and does not apply to

products poorly installed or randomly damaged following installation.

This warranty cancels and replaces any other manufacturer's

express or implied warranty as well as any other company commit-

ment.

NUHEAT cannot be held liable for related or random damages follow-

ing the installation of this product. The defective product as well as

the purchase invoice must be returned to the place of purchase or

mailed, prepaid and insured, to the following address:

Switch Selection

# FUNCTION UP DN

1 Temperature format display °F °C

2 Early Start ON OFF

3Temperature control mode a

a. To select the F mode, place the switch in the F position. To select the AF mode,

place the switch in the AF position and ensure that the remote temperature sensor

is connected to the thermostat. To select the A mode, place the switch in the AF

position and ensure that the remote temperature sensor is NOT connected to the

thermostat.

F AF

Factory settings

Technical Specifications

10.

Warranty

11.

NUHEAT INDUSTRIES LTD.

USA

6920 Salashan Parway

Building D-200

Ferndale, WA 98248

CANADA

1689, avenue Cliveden

Delta, BC

V3M 6V5

1 (800) 778-9276

www.nuheat.com

NUHEATTM is a registered trademark of Nuheat Industries LTD.

As an ENERGY STAR® partner,

Nuheat™ has determined that this thermostat meets

the ENERGY STAR guidelines for energy efficiency.

ELECTRICIAN’S INSTRUCTIONS

FOR MODEL NG110 (120 VAC)

INSTALLATION

This power base is designed to control electric floor-warming systems.

The resistive load must not exceed 1800 watts (NI) @ 120 VAC (15 A).

The thermostat is equipped with a Ground Fault Circuit Interrupter

(GFCI) and therefore the isolation of the line and load are required for

operation. Do not cap all the white wires together. During a ground

fault, both line and load will be cut-off. Connect thermostat as shown on

diagram.

Must be installed in accordance with national and local electrical

codes.

TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN

POWER PANEL TO AVOID ELECTRICAL SHOCK.

1Connecting wires and mounting power base

•Connect the power base

wires to the supply and load

using solderless connectors

for copper wires.

See diagram.

• Push the excess wire back

into the electrical box to

prevent interference with the

power base.

NOTE: All cables and connections must conform to the local

electrical code.

WARNING: Special CO/ALR solderless connectors must be used

when connecting with aluminum conductors.

2Connecting temperature sensor wire

• The wire must pass outside

the electrical box and follow

the wall down to the floor.

The sensing probe should be

placed in a representative

heat area for maximum

system performance.

•The sensing probe should

be centered between the

wires in the mat. The

temperature sensor wire

cannot cross any heater

wires and the sensing probe

must NOT be directly on or

adjacent to a heating wire.

• Secure the power base with the screw.

• Connect the temperature sensor wire to terminals 3 and 4 on the

power base (no polarity needs to be respected).

• Once the power base is properly installed, mount the faceplate.

14/05/03 920-112-000-00-1-A

NG110

SUPPLY

LOAD

WARRANTY

NUHEAT INDUSTRIES ONE (1) YEAR LIMITED WARRANTY

This product is guaranteed against workmanship defects for a one-year

period following the initial date of purchase. During this period,

NUHEAT will repair or replace, at our option and without charge, any

defective product which has been used under normal conditions.

The warranty does not cover delivery costs and does not apply

to products poorly installed or randomly damaged following installation.

This warranty cancels and replaces any other manufacturer's express

or implied warranty as well as any other company commitment.

NUHEAT cannot be held liable for related or random damages

following the installation of this product.

The defective product as well as the purchase invoice must be returned

to the place of purchase or mailed, prepaid and insured, to the

following address:

NUHEAT INDUSTRIES LTD.

USA CANADA

880 Grant Avenue 1689 Cliveden Avenue

Blaine, WA Delta, BC

98230 V3M 6V5

1 (800) 778-9276

www.nuheat.com

TECHNICAL SPECIFICATIONS

Model: NG110

Supply: 120 VAC, 50/60 Hz

Load: 15 A maximum

Power: 1800 watts (NI) @ 120 VAC

Ground Fault Circuit Interrupter (GFCI): Class A (5 mA)

Approvals: CSA / C,US

Storage: -4°F to 120°F (-20°C to 50°C)

NUHEAT is a registered trademark of Nuheat Industries LTD.

Keep the thermostat’s air vents clean and free from

obstructions.

1 Locate the screw at the

bottom of the front module.

2 Secure the thermostat

with the screw.

3 Turn the power back on.

MOUNTING THE FACEPLATE

POWER ON

When the unit is power on for the first time,

the following appears on-screen:

Time (0:00)

Floor temperature

Manual mode icon ( )

If improperly installed, you will see the LO

or HI error message.

LO: Floor temperature is below 0°C

(32°F); or temperature probe is

defective (open) or not connected.

*If the heating indicator is also

displayed, then the relay is closed

and current is going through the load.

HI:

NT5

1-800-778-WARM

www.nuheat.com

Day

Test

Stand By

Hour

Min

Pgm

Clear

Mode/Ret

Floor temperature is above 60°C (140°F);

or temperature probe is shorted.

GFCI TEST

NT5

1-800-778-WARM

www.nuheat.com

Day

Test

Stand By

Hour

Min

Pgm

Clear

Mode/Ret

1Adjust the setpoint temperature until the heating indicator ( )

appears on-screen.

2Press TEST. The test is successful if the GFCI warning light is ON

and power is cut-off. The heating indicator ( ) should still appear.

3Switch power to Standby, then reset to ON.

If test fails:

A- Verify installation.

B- Check the load wires.

C- Verify that the thermostat is in

heating mode with Heating

indicator ON.

Once you’ve identified the

problem, run the GFCI test again.

ELECTRICIAN’S INSTRUCTIONS

FOR MODEL NG220 (240 VAC)

INSTALLATION

This power base is designed to control electric floor-warming systems.

The resistive load must not exceed 3600 watts (NI) @ 240 VAC (15 A).

The thermostat is equipped with a Ground Fault Circuit Interrupter

(GFCI) and therefore the isolation of the line and load are required for

operation. During a ground fault, both line and load will be cut-off.

Connect thermostat as shown on diagram.

Must be installed in accordance with national and local electrical

codes.

TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN

POWER PANEL TO AVOID ELECTRICAL SHOCK.

1Connecting wires and mounting power base

•Connect the power base

wires to the supply and load

using solderless connectors

for copper wires.

See diagram.

• Push the excess wire back

into the electrical box to

prevent interference with the

power base.

NOTE: All cables and connections must conform to the local

electrical code.

WARNING: Special CO/ALR solderless connectors must be used

when connecting with aluminum conductors.

2Connecting temperature sensor wire

• The wire must pass outside

the electrical box and follow

the wall down to the floor.

The sensing probe should be

placed in a representative

heat area for maximum

system performance.

•The sensing probe should

be centered between the

wires in the mat. The

temperature sensor wire

cannot cross any heater

wires and the sensing probe

must NOT be directly on or

adjacent to a heating wire.

• Secure the power base with the screw.

• Connect the temperature sensor wire to terminals 3 and 4 on the

power base (no polarity needs to be respected).

• Once the power base is properly installed, mount the faceplate.

14/05/03 920-112-001-00-1-A

NG220