Laars FT Series Manuel utilisateur

User’s Manual Document 1488

H2412500-

WARNING

If the information in this manual is not

followed exactly, a re or explosion may

result causing property damage, personal

injury or loss of life.

Do not store or use gasoline or other

ammable vapors and liquids in the vicinity

of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not

use any phone in your building.

• Immediately call your gas supplier from a

nearby phone. Follow the gas supplier’s

instructions.

• If you cannot reach your gas supplier, call

the re department.

Installation and service must be performed

by a qualied installer, service agency, or gas

supplier.

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualied in hot water boiler and heater installation and maintenance. Improper installation and/or operation

could create carbon monoxide gas in ue gases which could cause serious injury, property damage, or

death. Improper installation and/or operation will void the warranty.

AVERTISSEMENT

Assurez-vous de bien suivres les instructions

données dans cette notice pour réduire au

minimum le risque d’incendie ou d’explosion

ou pour éviter tout dommage matériel, toute

blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inammables dans

le voisinage de cet appareil ou de tout autre

appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d’allumer d’appareils.

• Ne touchez à aucun interrupteur. Ne pas vous servir

des téléphones dansle bâtiment où vous êtes.

• Appelez immédiatement votre fournisseur de

gaz depuis un voisin. Suivez les instructions

du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur de

gaz, appelez le sservice des incendies.

L’installation et l’entretien doivent être assurés par

un installateur ou un service d’entretien qualié ou

par le fournisseur de gaz.

User’s Manual

Wall-Mounted, Modulating

Gas, Condensing, Combination Boiler

Model FTCW

140,000 BTU/h

199,000 BTU/h

• Natural Gas (NG) - Factory Conguration

• Propane Gas (LP) - Field-Convertible

THE FT SERIES

Page 2

4 SCREWS

CONTROL PANEL

AND DISPLAY

CENTRAL HEAT

PRESSURE GAUGE

MODEL NUMBER

1. Familiarizing yourself to

........................................CONTENTS Pgs

1. Familiarizing yourself to the wall mounted FT Series Combi.........2

2. Caring For Your FT Series Combi .................................................2

3. Start Up and Shut Down. ..............................................................4

4. Control Setup and Operation....................................................4-10

The FT Series Combi is a wall

mounted, condensing and fully

modulating, residential boiler and

water heater.

This User’s Manual will guide you into the

basics of operating your FT Series Combi.

Please reference the

Installation and Operation Manual for

complete details. Doc# 1487

2. Caring For Your FT

Your FT Series Combi will require very little

maintenance. However, as with any ne appliance

there are certain steps that should be taken to ensure

continuing optimum performance.

2.1 General Care

Keep the area around the FT Series Combi clean

and free from combustible materials, gasoline and

other ammable liquids and vapors.

The FT Series Combi must be completely

isolated and protected from any source of

corrosive chemical fumes such as trichlorethylene,

perchlorethylene, chlorine, etc.

Keep bottom and top openings on the boiler free

for proper ventilation of interior components.

Do not obstruct or block a free ow of air to the

boiler to ensure proper ventilation.

If desired, clean the jacket surfaces with a

damp cloth and mild detergent. Do not use ammable

cleaning materials.

If sidewall vented, keep the vent terminal clear

of obstructions — do not allow snow to cover the vent

terminal. Clean the intake screen often, and then

develop an appropriate maintenance schedule.

2.2 Annual Inspection of Flue and Vents

Visually inspect the vent pipe once a year. Should

any deterioration exist, have the a󰀨ected parts replaced

by a qualied service person.

2.3 In the Event of a Power Failure

The FT Series Combi can not be operated during

an electrical power outage. If there is an extended

power outage with danger from freezing, then the FT

Series Combi (and all other water systems) should be

drained completely. When draining the boiler, turn o󰀨

main electrical disconnect switch. When placing back in

service, refer to Section 3 of this Manual for instruction.

All draining and lling must only be done by a qualied

service person.

2.4 Full Service Every Year

In addition to the annual visual inspections, a

qualied service agency should conduct a detailed

inspection of all ue product carrying areas of the FT

Series Combi and its venting system.

THE FT SERIES

User’s Manual - The FT Series Wall Mounted, Combination Boiler Page 3

CH Supply

CH Return

CH Supply CH Return

Combustion Air Vent

CH Supply CH Return

Combustion Air Vent

FTCW140 FTCW199

#Name of Component

1 Air Vent (air eliminator)

2 Pressure Relief Valve

3Air Intake Collar

4 Air Gas Mixing Pipe

5 Gas Valve

6DHW Water Tank

7Main PCB

8Manual Power Switch (ON / OFF)

9Boiler Pump

10 'CH' Supply Connection

11 'CH' Return Connection

12 CH Pressure Gauge

13 DHW Outlet Connection

14 Gas Inlet Connection

15 DHW Inlet Connection (lter and ow restrictor)

16 Condensate Connection

#Name of Component

17 Condensate Trap

18 Blocked Condensate Switch

19 Mixing Valve

20 Terminal Block

21 Control Panel and Display

22 Heat Exchanger

23 Ignition Transformer

24 Flame Detecting Sensor

25 Burner Case

26 BLDC Fan (Blower)

27 Vent Pipe

28 Air Pressure Sensor

29 Vent Pipe Collar

30 Sight Glass

31 Low Water Cut O󰀨

32 Overheat Temperature Sensor

Page 4

3. Shut Down and Restart

3.1 To Start the FT Series Combi

If drained, please refer to the Install and Operating

Manual to ensure that the complete ‘Setup’

procedure has been followed before starting this

boiler. A complete ‘Setup’ must be performed by a

qualied service person.

3.2 Shutting Down the FT Series Combi

1. Turn o󰀨 the main electrical disconnect switch.

2. Close all manual gas valves.

3. If freezing is anticipated, drain the FT Series

Combi and be sure to also protect building piping

from freezing. All water must be removed from

heat exchanger and condensate trap or else

damage from freezing may occur. Please refer to

the Install and Operating Manual.

This step to be performed by a qualied service person.

4. The Control Display and Operation

The FT Series Wall Mounted, Combination Boiler Page 51

SECTION 5 Control Display and Operation

5.1 Control Dial and Buttons

• Temperature Speci cations

Operating ambient Temperature Range : -10 to 60°C.

Operating Relative Humidity up to: 90% at 40°C.

Shipping & Storage Temperature Range of : -20 to 80°C.

Buttons Function Method Function Method

ADisplay

Power Turns Control Display ON / OFF Press/Tap

BModes

Status Display Mode (With display power on) Press/Hold (5 Seconds) Return to Menu (from

Status Display Mode) Press/Tap

Installer Mode (WIth display power o󰀨 ) Press/Hold (5 Seconds) Return to o󰀨 display o󰀨

mode (from installer mode) Press/Tap

CHot

Water

DHW Set point LOW Range

95 - 120°F (35 - 49°C)

Press/Tap (To return home,

tap Scroll/Select)

DHW set point HIGH

Range 121-140°F (49.5-

60°C) (from DHW set

point LOW RANGE)

Press/Hold (5 Sec-

onds), (To return

home, tap Scroll/

Select)

DCentral

Heat CH set point mode (boiler only) Press/Tap (To return home,

tap Scroll/Select)

Toggle (°C/°F) (from CH

set point mode)

Press/Hold (5

Seconds)

EScroll /

Select

Turn to scroll (clockwise or counterclockwise),

Tap to select Press/Tap

The Control Display has a Control Dial (E), 4 buttons (A, B, C, D), and a Liquid

Crystal Display (with 72 back-lit segments). This section of this manual gives

instruction on how to navigate into the many functions of the FT and to change

temperature set points, set system variables and controller parameters.

Status Light

(constant green

when operating

normally)

The Control Display

53page

B C

A D

User’s Manual - The FT Series Wall Mounted, Combination Boiler Page 5

4. The Control Display and Operation (continued)

Page 52

5.2 LCD Overview

CH mode Central Heat mode icon can be adjusted

Anti-freeze mode Anti-freeze mode icon

Storage Heating mode Stored Water Being Heated, can be adjusted

Lock mode Buttons-locked mode icon

Communication Communication icon

Summer mode Only DHW Mode, can be adjusted (warm weather shutdown)

Status and Installer mode The Status Mode or the Installer Mode is Active (all parameters)

Flame signal Flame Signal icon

Pump icon Water pump operation (CH or DHW) icon

Numeric Display Number and character display, to display all parameters

DHW mode Combination boiler Set Point, can be adjusted

Outside temp or 0-10 V mode Operating by outside temperature or 0-10V

Numeric Display

Domestic Hot Water Mode

Anti-Freeze

Mode

Storage

Heating

Lock Communicating

Status and

Installer

Modes

Flame

Signal

Pump

Outside

Temp Mode

or 0-10V

Summer

Mode

(warm

weather

shutdown)

Central

Heat

The LCD will illuminate when a user action is detected (a button is pressed) and will turn

back o󰀨 after 20 seconds.

* NOTE: The display will not allow changes when the lock mode is activated.

To exit the Lock mode, press the button.

WARNING

Do no use this appliance if any part has been under

water. Immediately call a quali ed service technician

to inspect the appliance and to replace any part of

the control system and any gas control that may have

been under water.

Page 6

Operating Mode

The FT Series Wall Mounted, Combination Boiler Page 53

5.3 Operating Mode

Operating Mode

After the Power is turned on, and/or the Control Display is turned on , the Control Display

will go through a ‘Start Up’ checklist and brie y show a sequence of diagnostic codes before

entering into the ‘Operating Mode. It will then display the following information.

Indicate Example

Current Operating Temperature 110°F

Temperature sign Celsius or Fahrenheit letter °C or °F

Display and Controller are communicating

If  ame detected

If pump is operating

Outdoor sensor or 0-10V

55page

56page

B C

A D

User’s Manual - The FT Series Wall Mounted, Combination Boiler Page 7

DHW Set Point Change Modes

Page 54

5.4

Status Display Mode

Digital Display Status Display Parameter Description

O:ot Outdoor temperature Current Outdoor temperature

A: Li or A: GA Flow unit Current  ow value(Li: L/m, GA: GPM)

b: It CH Return Water Temperature Current Return Water Sensor Temperature

C: Fr Fan rpm Current fan rpm value

d: Lc Lock mode Lock mode ON/OFF

E: oP OP temperature Current OP temperature

F: dH DHW temperature Current DHW temperature

H: Eh Exhaust temperature Current Exhaust temperature

I : St N/A Not Used (Default is 0)

J: oH Overheat temperature Current Overheat temperature

L: rt

1: PH

Burner

Operation

Time

Supply power

time Supply power time x 100 hour

2: rh Burner

operation time Burner operation time x 1 hour

3: rH Burner

operation time Burner operation time x 1,000 hour

4: It Ignition cycles Ignition cycles x 10 times

5: IH Ignition cycles Ignition cycles x 10,000 times

P: Ou

Displays output condition for

internal primary pump and

three way valve.

- O󰀨

- On

1st Icon 2nd Icon 3rd Icon

Not Used Internal CH

Pump 3 Way Valve

55page

56page

B C

A D

To view any of the above listed Status Parameters,

Press and Hold Button B to get into the Status Display Mode.

Rotate Dial E until you  nd the Parameter that you wish to view. Tap Dial E to enter that Parameter.

Adjust to the setting that you require and then press (tap) Dial E to save and to Exit.

Page 8

The FT Series Wall Mounted, Combination Boiler Page 55

5.5 DHW Set Point Change Mode

DHW Set Point Change Modes

The display shows the following

information when changing water heating

temperature set points.

* Default DHW set point is 120°F (49°C)

• DHW 95-120°F (35 - 49°C) LOW range (Default)

-To change LOW range, press the C Button. The DHW icon and current DHW LOW will  ash (a  ashing

value means it can be changed).

-Turn dial E clockwise to increase and counterclockwise to decrease until desired temperature is reached.

-Press dial E to save set point changes.

• DHW 121 - 140°F (49.5 - 60°C) HIGH range

-To change HIGH range, press and HOLD the C button for more than 5 seconds. The DHW icon and

current DHW HIGH will  ash (a  ashing value means it can be changed).

-Turn dial E clockwise to increase and counterclockwise to decrease until desired temperature is reached.

-Press dial E to save set point changes and to Exit.

Indicate Example

Current DHW set point temperature 120°F

Temperature sign Celsius or Fahrenheit letter °C or °F

If display is communicating with the main controller normally, the

communication icon will be indicated.

When DHW set point range is high : from 121°F (49.5°C) to 140°F (60.0°C) H . 140°F

When changing DHW set point, the DHW icon will  ash S24

Changing between Celsius and Fahrenheit

When the button D is pressed (for more

than 5 seconds), temperature unit will toggle

between °C and °F.

Scalding may occur within 5 seconds at a setting of 140°F (60°C). Water temperatures

over 125°F can cause severe burns, or death from scalding. Children, disabled,

and elderly are at highest risk of being scalded. Read all instructions before setting

temperature at appliance. Feel water before bathing or showering.

Manufacturer strongly recommends the use of an anti-scald mixing valve at

domestic hot water outlet (boiler location) to reduce potential for scalding.

Contact Manufacturer for recommended models. Check with local codes.

57page

DANGER

User’s Manual - The FT Series Wall Mounted, Combination Boiler Page 9

Page 56

To change CH Set point, press the D button. The CH Icon and current

CH Set point will  ash.

Turn the E dial clockwise to increase, and counterclockwise to decrease CH set point, until

desired temperature is reached.

Press E dial to save changes and to Exit.

Default CH set point is 130°F (54°C)

CH set point range is 130 - 180°F (54.4 ~ 82.0°C)

Indicate Example

Current Operating Temperature 110°F

Temperature sign Celsius or Fahrenheit letter °C or °F

Display and Controller are communicating

If  ame detected

If pump is operating

When changing CH Set point, the CH Icon will  ash

5.6 CH Set Point Change Mode

Changing between Celsius and Fahrenheit

When the button D is pressed (for more than

5 seconds), temperature unit will toggle between

°C and °F.

To activate heat storage function, First turn OFF the power to the Control Display.

Then Press and Hold Button B to get into the Installer Mode.

Rota te Dial E until you  nd 5:St Tap Dial E to enter Storage Mode. Storage Mode indicates that the boiler is

maintaining the water temperature in the internal storage tank. When Storage Mode is active, the display

will appear as shown.

Turn the E dial clockwise to activate and counterclockwise to deactivate the Heat storage function. Default: ON.

Press E dial to save changes and to Exit.

Indicate Example

Current Operating Temperature 110°F

Temperature sign Celsius or Fahrenheit letter °C or °F

Display and Controller are communicating

If  ame detected

Storage mode indication

If Pump is operating

5.7 Storage Mode

58page

Page 10

Notes:

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