Laars FT Series, FTCW Manual

Familiarizing yourself to FT THE SERIES

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

Shut Down and Restart

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 qualified service person.

Shutting Down the FT Series Combi

1. Turn off 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 qualified service person.

The Control Display and Operation

The Control Display

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.

Buttons			Function	Method	Function	Method
A		Display Power	Turns Control Display ON / OFF	Press/Tap
B		Modes	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 off )	Press/Hold (5 Seconds)	Return to off display off mode (from installer mode)	Press/Tap
C		Hot 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 (49.560°C) (from DHW set point LOW RANGE)	Press/Hold (5 Seconds), (To return home, tap Scroll/ Select)
D		Central 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)
E		Scroll / Select	Turn to scroll (clockwise or counterclockwise), Tap to select	Press/Tap

• Temperature Specifications
  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.

LCD Overview

The LCD will illuminate when a user action is detected (a button is pressed) and will turn back off after 20 seconds.
* NOTE: T he display will not allow changes when the lock mode is activated. To exit the Lock mode, press the button.

Carbon Monoxide Hazard
This product burns gas to produce heat. The appliance must be properly installed, operated, and maintained to avoid exposure to appreciable levels of carbon monoxide.
The installer must verify that at least one carbon monoxide alarm has been installed within a residential living space or home following the alarm manufacturer's instructions and applicable local codes before putting the appliance into operation. It is important for carbon monoxide alarms to be installed, maintained, and replaced following the alarm manufacturer's instructions and applicable local codes.

Do not use this appliance if any part has been under water. Immediately call a qualifi 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.

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 briefl 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 fl ame detected
If pump is operating
Outdoor sensor or 0-10V

Status Display Mode

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 fi 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.

DHW Set Point Change Mode

• DHW Set Point Change Modes
  The display shows the following information when changing water heating temperature set points.
  Changing between Celsius and Fahrenheit When the button D is pressed (for more than 5 seconds), temperature unit will toggle between °C and °F.
  

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 fl ash	S24

* 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 fl ash (a fl 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 fl ash (a fl 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.

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.

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.

Indicate	Example
Current Operating Temperature	110°F
Temperature sign Celsius or Fahrenheit letter	°C or °F
Display and Controller are communicating
If fl ame detected
If pump is operating
When changing CH Set point, the CH Icon will flash

Default CH set point is 130°F (54°C)
CH set point range is 130 - 180°F (54.4 ~ 82.0°C)
To change CH Set point, press the D button. The CH Icon and current CH Set point will fl 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.

Storage Mode

Indicate	Example
Current Operating Temperature	110°F
Temperature sign Celsius or Fahrenheit letter	°C or °F
Display and Controller are communicating
If flame detected
Storage mode indication
If Pump is operating

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 fi 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.

Safety

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler and heater installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty.