Laars MASCOT FT MFTCW Bedienungsanleitung

User’s Manual Document 1319

H2372900-

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

MASCOT ® FT

Wall-Mounted, Modulating

Gas, Condensing, Combination Boiler

Model MFTCW

140,000 BTU/hr

• Natural Gas (NG) - Factory Conguration

• Propane Gas (LP) - Field-Convertible

LAARS Heating Systems

Page 2

MASCOT ® FT

1. Familiarizing yourself to the Laars

CONTENTS Pgs -

1. Familiarizing yourself to the Laars Mascot FT .......2

2. Caring For Your Mascot FT ...................................2

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

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

The Mascot FT is a highly efcient, wall

mounted, condensing and fully modulating,

residential boiler and boiler. This Users Manual

will guide you into the basics of operating your

Mascot FT

Please reference the Installation and Operation

Manual for complete details. Laars Doc# 1318

2. Caring For Your Mascot FT

Your Mascot FT 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 Mascot FT clean and

free from combustible materials, gasoline and other

ammable liquids and vapors.

The Mascot FT 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 affected parts replaced

by a qualied service person.

2.3 In the Event of a Power Failure

The Mascot FT can not be operated during an

electrical power outage. If there is an extended power

outage with danger from freezing, then the Mascot

FT (and all other water systems) should be drained

completely. When draining the boiler, turn off 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 boiler

and its venting system.

User’s Manual - Mascot FT Combination Boiler / Water Heater Page 3

#Name of Component

Air Vent (air eliminator)

Pressure Relief Valve

Air Intake Collar

Air Gas Mixing Pipe

Gas Valve

DHW Water Tank

Main PCB

Manual Power Switch (ON / OFF)

Recirculation Pump DHW / CH Primary Pump

'CH' Supply Connection

'CH' Return Connection

CH Pressure Gauge

DHW Outlet Connection

Gas Inlet Connection

DHW Inlet Connection (lter and ow restrictor)

#Name of Component

Condensate Connection

Condensate Trap

Air Pressure Switch (condensate)

Mixing Valve

Terminal Block

Control Panel and Display

Heat Exchanger

Ignition Trans

Flame Detecting Sensor

Burner Case

BLDC Fan

Vent Pipe

Air Pressure Switch

Vent Pipe Collar

Sight Glass

Hydronic Supply Hydronic Return

LAARS Heating Systems

Page 4

3. Shut Down and Restart

3.1 To Start the Mascot FT

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 Mascot FT

1. Turn off the main electrical disconnect switch.

2. Close all manual gas valves.

3. If freezing is anticipated, drain Mascot FT 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.

LAARS Heating Systems

Page 48

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 Functionality

PRESS (Tap) PRESS and HOLD (5 seconds)

Display Power

Turns Control Display ON / OFF

B Modes Tap to return to menu (If Display Power was On )

Status Display Mode

(If Display Power was Off )

Installer Mode

CHot Water

DHW Set-Point LOW Range

95 - 120°F (35 - 49°C)

DHW Set-Point HIGH Range

121 - 140°F (49.5 - 60°C)

DCentral Heat

CH set-point mode

(boiler only)

Toggle (°C / °F)

EScroll / Select Turn to scroll, tap to select

(clockwise or counterclockwise)

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 Mascot FT and to

change temperature set points, set system variables and controller parameters.

Status Light

(constant green

when operating

normally)

The Control Display

4. The Control Display and Operation

User’s Manual - Mascot FT Combination Boiler / Water Heater Page 5

LAARS Heating Systems

Page 48

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 Functionality

PRESS (Tap) PRESS and HOLD (5 seconds)

Display Power

Turns Control Display ON / OFF

B Modes Tap to return to menu (If Display Power was On )

Status Display Mode

(If Display Power was Off )

Installer Mode

CHot Water

DHW Set-Point LOW Range

95 - 120°F (35 - 49°C)

DHW Set-Point HIGH Range

121 - 140°F (49.5 - 60°C)

DCentral Heat

CH set-point mode

(boiler only)

Toggle (°C / °F)

EScroll / Select Turn to scroll, tap to select

(clockwise or counterclockwise)

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 Mascot FT and to

change temperature set points, set system variables and controller parameters.

Status Light

(constant green

when operating

normally)

The Control Display

Mascot FT Combination Boiler Page 49

SECTION 5. Control Display and Operation 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

WARNING

Do not 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.

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

back off after 20 seconds.

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

To exit the Lock mode, press the button.

Mascot FT Combination Boiler Page 49

SECTION 5. Control Display and Operation 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

WARNING

Do not 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.

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

back off after 20 seconds.

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

To exit the Lock mode, press the button.

4. The Control Display and Operation (continued)

LAARS Heating Systems

Page 6

Operating Mode

LAARS Heating Systems

Page 50

SECTION 5. Control Display and Operation

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

User’s Manual - Mascot FT Combination Boiler / Water Heater Page 7

DHW Set Point Change Modes

Mascot FT Combination Boiler Page 51

5.4 Status Display Mode

SECTION 5. C

ontrol Display and Operation

Digital Display Status Display Parameter Description

O:ot Outdoor temperature Current Outdoor temperature

A: Li or A: GA Flow unit Current ﬂ 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 Opera-

tion 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.

- Off

- On

1st Icon 2nd Icon 3rd Icon

Not Used Internal CH

Pump 3 Way Valve

To change 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 change. 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.

LAARS Heating Systems

Page 8

LAARS Heating Systems

Page 52

SECTION 5. Control Display and Operation 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 setpoint 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 setpoint 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 setpoint, the DHW icon will ﬂ 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.

DANGER

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.

User’s Manual - Mascot FT Combination Boiler / Water Heater Page 9

Mascot FT Combination Boiler Page 53

To change CH Setpoint, press the button D button. The CH Icon and

current CH Setpoint will  ash.

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

desired temperature is reached.

Press E dial to save changes and to Exit.

Default CH set-point is 120°F (49°C)

CH set-point range is 86 - 180°F (30.0 ~ 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 Setpoint, the CH Icon will  ash

SECTION 5. Control Display and Operation 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 change Storage Mode Temp, 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 heating the water held in the internal storage tank. When Storage Mode is active, the display will

appear as shown.

Turn the E dial clockwise to increase, and counterclockwise to decrease setting.

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

LAARS Heating Systems

Page 10

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