Laars FT Series Installation And Operation Instructions Manual
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Laars FT Series Installation And Operation Instructions Manual

Laars FT Series Installation And Operation Instructions Manual

Wall-mounted, modulating gas, condensing, combination boiler
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Installation and Operation Instructions
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.
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed
by a qualified installer, service agency, or gas
supplier.

Installation and Operation

Instructions for
THE
Wall-Mounted, Modulating
Gas, Condensing, Combination Boiler
Model FTCW
140,000 BTU/hr
199,000 BTU/hr
Natural Gas (NG) - Factory Configuration
•
•
Propane Gas (LP) - Field-Convertible
WARNING
FT
SERIES
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 ou ni
d'autres vapeurs ou liquides inflammables dans
le à proximité de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE
• Ne pas tenter d'allumer d'appareils.
• Ne touchez à aucun interrupteur. Ne pas vous servir
des téléphones dans le bâtiment où vous vous
trovez.
• 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 qualifié
ou par le fournisseur de gaz.
Document 1318G
AVERTISSEMENT
GAZ:

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  • Page 1: Installation And Operation

    Installation and Operation Instructions Document 1318G Installation and Operation Instructions for SERIES Wall-Mounted, Modulating Gas, Condensing, Combination Boiler Model FTCW 140,000 BTU/hr 199,000 BTU/hr Natural Gas (NG) - Factory Configuration • • Propane Gas (LP) - Field-Convertible 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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SECTION 1 Product Accessories Introduction ............3 4.15.5 Zoning with circulation pumps ......43 Included with the Unit .........3 4.16 Pressure Relief Valve ........44 4.17 Disposal of Condensate ........45 4.18 DHW Flow Restrictors ........46 SECTION 2 Product Characteristics Model Nomenclature (model number) ....5 4.19 Electrical Wiring Connections ......47 4.20...

  • Page 3: Section 1 Product Accessories

    All installations must be made in accordance with This manual provides information necessary for the 1) American National Standard Z223.1/NFPA54-Latest Edition installation, operation, and maintenance of the FT Series Wall Mounted, Combination Boiler. All application “National Fuel Gas Code” or and installation procedures must be read and reviewed 2) CSA B149.1 “Natural Gas and Propane Installation Code”...
  • Page 4 Page 4 1.2 Included with the Unit (continued) Items Descriptions Condensate Hose FT1894 Wall Mount Bracket 2 types of Wall Anchors Pressure Relief Valve (CH LINE 3/4˝ 30psi) Model: CASH ACME F-82 3” Mesh Screens O-Ring and Gasket Kit Outdoor Sensor with screws and anchors FTCW140 FTCW199...

  • Page 5: Section 2 Product Characteristics Model Nomenclature (Model Number)

    The FT Series Wall Mounted, Combination Boiler Page 5 SECTION 2 Product Characteristics Model Nomenclature (model number) The Model Nomenclature is shown on your Rating Plate and consists of a series of letters and numbers ( Nomenclature ) that further identifies the characteristics of your FT.

  • Page 6: Specifications

    Page 6 Specifications Model Name FTCW140 140,000 Btu/h Gas Input Rate 28,000 Btu/h 35°F Rise 7.1 GPM 45°F Rise 5.5 GPM Hot Water Capacity 77°F Rise 3.2 GPM Indoor / Wall hung type Installation Flue System Sealed Combustion Direct / Single Vent / Concentric Vent Vent Run 2˝(50ft) , 3˝(100ft) Schedule 40 CPVC, PP, PVC 3.5˝...
  • Page 7 The FT Series Wall Mounted, Combination Boiler Page 7 Specifications (continued) Model Name FTCW199 199,000 Btu/h Gas Input Rate 19,900 Btu/h 35°F Rise 9.88 GPM 45°F Rise 7.7 GPM Hot Water Capacity 77°F Rise 4.8 GPM Indoor / Wall hung type...

  • Page 8: Dimensions

    Page 8 Dimensions FTCW140 Air Intake Vent Description Diameter Air Intake collar 3" Vent Pipe Collar 3" ‘CH’ Supply 1" NPT ‘CH’ Return 1” NPT 3/4” NPT ‘DHW’ Outlet 3/4” NPT ‘DHW’ Inlet 3/4” NPT Gas Inlet 1/2" NPT Condensate Line...
  • Page 9 The FT Series Wall Mounted, Combination Boiler Page 9 2.3 Dimensions FTCW199 Air Intake Vent Description Diameter Air Intake collar 3" Vent Pipe Collar 3" ‘CH’ Supply 1" NPT ‘CH’ Return 1” NPT 3/4” NPT ‘DHW’ Outlet 3/4” NPT ‘DHW’ Inlet 3/4”...

  • Page 10: Names Of Components

    Page 10 Names of Components FTCW140 Name of Component Name of Component Air Vent (air eliminator) Condensate Connection Pressure Relief Valve Condensate Trap Air Pressure Switch (condensate) Air Intake Collar Mixing Valve Air Gas Mixing Pipe Terminal Block Gas Valve DHW Water Tank Control Panel and Display Heat Exchanger...
  • Page 11 The FT Series Wall Mounted, Combination Boiler Page 11 FTCW199 Name of Component Name of Component Air Vent (air eliminator) Condensate Connection Pressure Relief Valve Condensate Trap Air Pressure Switch (condensate) Air Intake Collar Mixing Valve Gas Valve Terminal Block...

  • Page 12: Product Flow Paths And Characteristics

    Page 12 Product Flow Paths and Characteristics Central Heating flow. Combination Boiler Heating Mode. 2.5.1 Water in the heating pipe is used for space heating. FTCW140 FTCW199 Vent Vent Combustion Combustion Combustion Vent CH Supply Hydronic Supply Hydronic Supply CH Return Hydronic Return Hydronic Return...

  • Page 13: Product Flow Paths And Characteristics

    The FT Series Wall Mounted, Combination Boiler Page 13 Product Flow Paths and Characteristics Domestic Hot Water flow. Combination Boiler Domestic Hot Water Mode. 2.6.1 Cold water passes through the exchanger and is heated via a mini indirect tank. The domestic hot water (DHW) is provided on demand.

  • Page 14: Section 3 Safety Regulations Safety Symbols

    Page 14 SECTION 3 Safety Regulations Safety Symbols WARNING WARNING To avoid product damage, personal injury, or even FOR YOUR SAFETY READ BEFORE possible death, carefully read, understand, and OPERATING follow all the instructions in the Installation and If you do not follow these instructions exactly, a Operation manual before installation, operation and service the Boiler.
  • Page 15 The FT Series Wall Mounted, Combination Boiler Page 15 damaging condition that might affect the operation of the unit. Boiler must be checked by a qualified technician before resuming operation. DO NOT use this Boiler if any part has been under water.

  • Page 16: Safety Precautions And Proper Use

    Page 16 Safety Precautions and Proper Use Before Operation CAUTION When in Operation 1. Caution for Gas leak 1. Check the Gas Type (NG/LP) Frequently check for a gas leak at the gas connection When using or moving the unit for the first time, check portion with soapy water.
  • Page 17 The FT Series Wall Mounted, Combination Boiler Page 17 WARNING Do not use the appliance for any other purpose than for heating and hot water. Do not store combustibles or flammable material such as gasoline near the appliance. Do not store other items on or near this boiler.

  • Page 18: Location And Clearances

    Page 18 SECTION 4 Installation WARNING Location and Clearances Installations must comply with The FT must be mounted to a suitable wall by a • All the local, state, provincial, and national codes, laws, regulations and ordinances. qualified heating contractor under the guidelines of a •...

  • Page 19: Wall Mount Bracket

    The FT Series Wall Mounted, Combination Boiler Page 19 Wall Mount Bracket 3" to Top of Unit • The installation height and location for your Anchors FT depends on your installation scenario. With all clearances considered, and given adequate positioning for air supply...

  • Page 20: Combustion Air

    Page 20 Combustion Air FT boilers must have provisions for combustion and ventilation air in accordance with the applicable requirements for Combustion Air Supply and Ventilation vertical or horizontal duct to the outdoors or spaces in the National Fuel Gas Code, ANSI Z223 1; or in that directly communicate with the outdoors and shall Canada, the Natural Gas and Propane Installation Code, CSA B149.1.
  • Page 21 The FT Series Wall Mounted, Combination Boiler Page 21 NOTICE AVIS The instructions for the installation of the venting Les instructions d'installation du système system shall specify that the horizontal portions of d'évacuation doivent préciser que les sections the venting system shall be supported to prevent horizontales doivent être supportées pour prévenir...

  • Page 22: Venting (Exhaust)

    Page 22 Venting (Exhaust) WARNING NOTICE All venting must be installed according to this manual and any other applicable local codes, including but DO NOT COMMON VENT FT UNITS. FT not limited to, ANSI Z224.1/NFPA 54, CAN/CSA units are never permitted to share a vent with B149.1 and ULC-S636.

  • Page 23: General Location Guideline

    The FT Series Wall Mounted, Combination Boiler Page 23 WARNING 4 . Vent system components must not be mixed with alternate manufacturers certified Failure to vent this Boiler in accordance with these components and/or unlisted components. instructions could cause a fire, resulting in severe 5 .

  • Page 24: Locations For Vent Pipe Terminator

    Page 24 Locations for Vent Pipe Terminator 4.6.1 Direct Venting Clearances U.S. Installations (see note 1) Canadian Installations (see note 2) A= Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm) deck, or balcony See note 6 See note 6 B= Clearance to window or door that may be Direct vent only: 12 inches (30cm);...

  • Page 25: Venting Requirements In The Commonwealth Of Massachusetts

    The FT Series Wall Mounted, Combination Boiler Page 25 Venting Requirements in the 4.6.2 Commonwealth of Massachusetts In Massachusetts the following items are required if subdivision cannot be met at the time of completion of installation, the owner shall have a period of thirty...

  • Page 26: Common Vent Test

    Page 26 Common Vent Test NOTE: This section does not describe a method for common venting FT units. It describes what must be done when an existing unit is removed from a common vent system. AVIS Au moment du retrait d'une chaudière existante, les mesures suivantes doivent être prises pour chaque appareil toujours raccordé...

  • Page 27: Air Supply And Vent Connections

    The FT Series Wall Mounted, Combination Boiler Page 27 Air Supply and Vent Connections Vent / Air Pipe Lengths 4.8.1 3˝ Combustion Air / Vent Pipe 2˝ Combustion Air / Vent Pipe Combination Boiler Model FTCW140/199 100´ (30M) 50´ (15M Table 5.

  • Page 28: Indoor Combustion Air

    Page 28 Indoor Combustion Air 4.8.2 Read and Follow Sections 4.3 Guidelines First. 1. Insert the termination end cap into the intake air duct. 2. Provide two openings to allow for circulation of combustion air as specified by ANSI Z224.1/NFPA 54. In Canada refer to CAN/CSA B-149.1 NOTE: The FT needs fresh air for safe operation and must be installed so there are provisions for...
  • Page 29 The FT Series Wall Mounted, Combination Boiler Page 29 4.8 Vent / Air Pipe Termination (continued) Horizontal Vent Termination • Direct Vent - Sidewall Termination Exterior Wall Vent Screens are required 1” MIN Exhaust Elbow 12” MIN 12” MIN Exhaust...
  • Page 30 Page 30 • Direct Vent - Optional Side wall Terminations Exterior Wall Concentric Vent Termination • Direct Vent - Optional Horizontal Exterior Wall and Vertical Concentric Vent Side Wall Kit (2” or 3”) Side Wall Kit Exhaust (2” or 3”) 12”...

  • Page 31: Gas Supply And Piping

    The FT Series Wall Mounted, Combination Boiler Page 31 4.10 Gas Supply and Piping WARNING: Gas piping should be supported by suitable hangers or Open flame can cause gas to ignite and result in floor stands, not the appliance. property damage, severe injury, or loss of life.
  • Page 32 Page 32 The gas shut-off valve in the gas supply line should The gas connection fitting is, be installed close to the unit. 3/4” male NPT on FTCW140 models 3/4” male NPT on FTCW199 models To facilitate any future maintenance, it is also recommended that an approved gas union fitting be installed in the supply line between the shut-off The supply line must be sized for the maximum...
  • Page 33 The FT Series Wall Mounted, Combination Boiler Page 33 4.10 Gas Supply and Piping (cont) Suggested Natural Gas (NG) Layout NOTE: Total gas supply capacity must not be less than the total demand capacity of the connected appliances. Suggested Propane Gas (LP) Layout...

  • Page 34: Gas Supply Pressure

    Page 34 4.11 Gas Supply Pressure Refer to the illustration. Offset Adjustment. Do Not Adjust without using a combustion analyzer to verify adjustment. Adjust ONLY when in MIN Fire and when using a combustion analyzer. See Section 4.12 for step by step details. Gas Outlet / Manifold Pressure Port Inlet Gas Pressure Port FTCW140...

  • Page 35: Adjusting Combustion

    7. Setup your combustion analyzer and place the minor adjustment (1/8 turn) to either increase or decrease CO2. See 4.11 on page 34 sensor into the combustion test port The FT Series, Wall Combi, Gas Conversion Kit Document 4288D WARNING Standard Factory Setting is for MAX Fire.

  • Page 36: High Altitude Installations

    Page 36 14. It may be necessary to go back and forth 16. Remove your combustion analyzer from the Test between HI Fire and LOW Fire several times (and Port and be sure to thread the Test Port plug back adjusting only at LOW Fire), before CO2 at both into position.

  • Page 37: Natural Gas To Propane Conversion

    The FT Series Wall Mounted, Combination Boiler Page 37 The FT Series, Wall Combi, Gas Conversion Kit Document 4288D 4.14 Natural Gas to Propane Conversion Kit # R20770 The FT Series, wall combi, condensing boiler is confi gured for Natural Gas (NG) from the factory.
  • Page 38 Page 38 The FT Series, Wall Combi, Gas Conversion Kit Document 4288D Figure A Figure B Gas Valve Combustion Test Port Figure C FTCW140 FTCW199 Gas Valve Figure B Gas Valve Figure C ORIFICE PACKING WARNING AVERTISSEMENT This conversion shall be installed by a qualifi ed Ce conversion doit être installé...
  • Page 39 The FT Series Wall Mounted, Combination Boiler Page 39 The FT Series, Wall Combi, Gas Conversion Kit Document 4288D 4.14 Natural Gas to Propane Conversion (continued) MIN Fire Normal Operation MAX Fire Normal Operation NG Natural LP Propane 3” Vent Size 2”...
  • Page 40 Page 40 The FT Series, Wall Combi, Gas Conversion Kit Document 4288D NOTE: Installer is required to verify combustion settings as part of the installation process. CO should not exceed 200 ppm. Natural Gas (NG) Propane Gas (LP) value 2˝ VENT 3˝...

  • Page 41: Plumbing Guidelines

    The FT Series Wall Mounted, Combination Boiler Page 41 4.15 Plumbing Guidelines 4.15.1 External Plumbing and Water Connection Guidelines - Ensure pipe material meets local codes and industry CAUTION standards. - The pipe end must be clean and free of debris.

  • Page 42: Zoning With Zone Valves

    Page 42 4.15.4 Zoning with zone valves - In a valve based system, there is one circulator pump at the boiler and each heating zone has a zone valve which opens when the zone demands. - Each thermostat is wired directly to the corresponding zone valve.

  • Page 43: Zoning With Circulation Pumps

    The FT Series Wall Mounted, Combination Boiler Page 43 4.15 Plumbing Guidelines (continued) 4.15.5 Zoning with circulation pumps - In a pump based system, each heating zone of has its own circulator pump which runs when the zone demands. - Each zone thermostat goes to a controller which controls the pumps.

  • Page 44: Pressure Relief Valve

    Page 44 4.16 Pressure Relief Valve External pressure relief valves must be installed. Observe the following. Failure to comply with the guidelines on installing the pressure relief valve and discharge piping can result in personal injury, death or substantial property damage. WARNING Do not operate this appliance before the pressure relief valve supplied is installed with sufficient relieving...

  • Page 45: Disposal Of Condensate

    The FT Series Wall Mounted, Combination Boiler Page 45 4.17 Disposal of Condensate High efficiency gas condensing Boilers create condensation when operating. Condensation has acidic (pH) of approximately 4-5. Condensate must be drained in accordance with all local regulations. Follow your local code with regards to the disposal of condensation.

  • Page 46: Dhw Flow Restrictors

    Page 46 4.18 DHW Flow Restrictors Flow Restrictors are factory installed. Rated at 3.2 WARNING GPM for the model 140 and 7.0 GPM for the model 199, both of these factory installed restrictors are white If the appliance has been filled and operational, in color.

  • Page 47: Electrical Wiring Connections

    The FT Series Wall Mounted, Combination Boiler Page 47 4.19 Electrical Wiring Connections FTCW140 Manual Switch Terminal Block 0-10V O / S INPUT 0 - 10V Thermostat Con- Outdoor Sensor External Input nection WARNING Install wiring and electrically ground boiler in accordance with authority having jurisdiction or, in the absence of such requirements, follow the National Electrical Code, NFPA 70, and/or CSA C22.1 Electrical Code-Part...

  • Page 48: Dip Switches

    External Main Thermostat Con- Outdoor Power Sensor External Input nection CH Pump The FT Series, Wall Combi, Gas Conversion Kit Document 4288D 4.20 DIP Switches MIN Fire Normal Operation MAX Fire Normal Operation NG Natural LP Propane 3” Vent Size 2”...

  • Page 49: Control Board, Electrical Diagram

    The FT Series Wall Mounted, Combination Boiler Page 49 4.21 Control Board, Electrical Diagram Control Board...

  • Page 50: Ladder Diagram

    Page 50 4.22 Ladder Diagram level Air Pressure Sensor...

  • Page 51: Electrical Connections

    The FT Series Wall Mounted, Combination Boiler Page 51 4.23 Electrical Connections Connector HT SELV Description #, Location, Type Label GROUND HT (120V~) Power Supply Line HT (120V~) HT (120V~) Not Used HT (120V~) Igniter Pump : CH HT (120V~)
  • Page 52 Page 52 Connector HT SELV Description #, Location, Type Label Flame Detect Sensor SELV (5V) OP.S Operating water temperature sensor SELV (5V) DH.S SELV (5V) DHW temperature sensor Return temperature sensor SELV (5V) LWD1140-14 BG.S Venting (Exhaust) temperature sensor SELV (5V) ST.S SELV (5V) Not Used...

  • Page 53: Section 5 Control Display And Operation

    The FT Series Wall Mounted, Combination Boiler Page 53 SECTION 5 Control Display and Operation Control Dial and Buttons Status Light (constant green when operating normally) 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).

  • Page 54: Lcd Overview

    Page 54 LCD Overview Anti-Freeze Storage Lock Communicating Central Mode Heating Heat Status and Installer Summer Modes Mode (warm weather Flame shutdown) Signal Outside Temp Mode or 0-10V Numeric Display Pump Domestic Hot Water Mode Central Heat mode icon can be adjusted CH mode Anti-freeze mode Anti-freeze mode icon...

  • Page 55: Operating Mode

    The FT Series Wall Mounted, Combination Boiler Page 55 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 briefly show a sequence of diagnostic codes before entering into the ‘Operating Mode.

  • Page 56: Status Display Mode

    Page 56 AUTODESK � � � � � � � � � � Status Display Mode Status Display Parameter Digital Display Description O:ot Outdoor temperature Current Outdoor temperature A: Li or A: GA Flow unit Current flow value(Li: L/m, GA: GPM) b: It CH Return Water Temperature Current Return Water Sensor Temperature C: Fr...

  • Page 57: Dhw Set Point Change Mode

    The FT Series Wall Mounted, Combination Boiler Page 57 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...

  • Page 58: Set Point Change Mode

    Page 58 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. Example Indicate Current Operating Temperature 110°F Temperature sign Celsius or Fahrenheit letter °C or °F Display and Controller are communicating If flame detected...

  • Page 59: Installer Parameters

    The FT Series Wall Mounted, Combination Boiler Page 59 AUTODESK � � � � � � � � � � Installer Parameters These changes are to be made only by a qualified technician. To c hange any of the Installer Parameters, Start by turning OFF the Power to the Display Control.
  • Page 60 Page 60 5.8 Installer Parameters Index Parameter Description History fault code (E0~E9) 1: EH History entry Clear Error History Clearing of error History buffer 2: cE System initialize System initialize to default 3: In Flow unit gallon / liter 4: Fu Heat storage function On/Off 5: St Heat storage function...

  • Page 61: Outdoor Reset Adjustment

    The FT Series Wall Mounted, Combination Boiler Page 61 Outdoor Reset Adjustment Outdoor Reset varies the control setpoint based on the outdoor temperature. The reset function works as shown in Figure ‘CH Outdoor Reset’. When the outdoor air temperature reaches 6:OH “high outdoor temperature setpoint”, the control point setting is...

  • Page 62: Error Mode

    Page 62 5.11 Error Mode Flashing Example Indicate Error ‘ Er : ’ will flash Er:11 Error Code Er:11 Display and Controller are communicating NOTE: When communication between the Control Display and the main controller is lost, the will not be displayed.

  • Page 63: Section 6 Error Codes Error Code Tables

    The FT Series Wall Mounted, Combination Boiler Page 63 SECTION 6 Error Codes Error Code Tables Error Error Code Descrip- Recover Possible Remedies Code tion methods Press the Power button to clear the Error Code. If Error happens again: 1. Monitor the gas pressure to the appliance while in operation. Ensure pressure is be- tween 3.5 and 14”...
  • Page 64 Page 64 Error Recover Error Code Description Possible Remedies Code methods This Error Code will go away when exhaust temperature decreases. If Error happens again: Venting (Exhaust) Sensor 1. Check Venting (exhaust) temperature sensor. Ensure connections are secure. Soft Lock Open or Short 2.
  • Page 65 The FT Series Wall Mounted, Combination Boiler Page 65 (continued) SECTION 6. Error Codes Error Recover Error Code Description Possible Remedies Code methods This Error Code will go away when the condition is remedied. Mixing Valve Initial Value If Error happens again: Error 1.

  • Page 66: Fault Tree Analysis

    Page 66 Fault Tree Analysis 1. Flame detection...
  • Page 67 The FT Series Wall Mounted, Combination Boiler Page 67 6.2 Fault Tree Analysis (cont) 2. Gas Detection 3. ‘Storage’, ‘DHW’, ‘OP’, ‘CH overheat’, ‘Exhaust heat’ Sensor detects Error code contents DHW NTC open or short OP NTC open or short...

  • Page 68: Diagnostics

    Page 68 SECTION 7 Trouble Shooting Diagnostics Question Answer Make sure that the ON/OFF button on the Control Panel has been turned ON. If the monitor on the Control Panel is blank, make sure the power cord is plugged and 4A fuses on the main controller in the units are good. Burner does not ignite Make sure that there is water supplied to the unit.

  • Page 69: Suggested Corrective Actions

    The FT Series Wall Mounted, Combination Boiler Page 69 Suggested Corrective Actions This controller is able to record information about the boiler’s condition at the time of the five previous faults or errors. Refer to the Section ‘5.10 Error Mode’ of this manual.
  • Page 70 Page 70 Corrective Action(s) Fault Condition Diagnostic Check all the temperature readings of the boiler on the DIAGNOSTICS - Occurs when TEMPERATURES menu to determine a temperature if any sensors are currently displayed as SHORT or OPEN. sensor has Reset using manual electrically Check wire harness for loose TEMPERATURE...

  • Page 71: Section 8 Maintenance 8.1 Annual Startup & General Maintenance

    The FT Series Wall Mounted, Combination Boiler Page 71 SECTION 8 Maintenance Annual startup & - Check the power source. general maintenance Make sure that the power cord is correctly connected. The main power line is connected to Regular Maintenance the manual switch box inside a combination boiler.
  • Page 72 Page 72 - Check the air vent If the air vent valve seems to work freely without seat. If the valve continues to weep, contact your leaking, replace cap “A” by twisting all the way on. qualified service technician for inspecting the valve Loosen cap “A”...

  • Page 73: Flushing The Combination Boiler

    The FT Series Wall Mounted, Combination Boiler Page 73 Flushing the Combination Boiler Flushing the Heat Exchanger is a complicated procedure that should only be done by an authorized technician or licensed professional. Keep in mind that improper maintenance can void your warranty.

  • Page 74: Draining And Cleaning

    To refill the combination boiler, reassemble the filters back into the combination boiler and reverse steps 7 back to 1. Freeze Protection NOTICE FT Series Boilers are certified for indoor use only, and Different glycol products may provide varying are not design-certified for placement outdoors. degrees of protection.

  • Page 75: Quick View

    The FT Series Wall Mounted, Combination Boiler Page 75 Freeze Protection (continued) SECTION 9 Installation Check WARNING Quick View Do NOT use automotive antifreeze or ethylene Before Installing glycol. Use only inhibited propylene glycol solutions - Make sure that there is enough space for installing which are specially formulated for hydronic Water and gas line.

  • Page 76: Final Check Lists

    Page 76 Final Check Lists Final check : Connecting the power supply Final check : Installation Conditions. • Please check that the power is 120V AC. • Is the Boiler properly mounted on the wall? • Have you checked the polarity of the electrical •...

  • Page 77: Section 10 Parts List And Illustrations

    Mascot FT Combination Boiler Page 77 Casing _ Feature SECTION 10 Parts List and Illustrations FTCW140 FT1894 Mounting Bracket...
  • Page 78 Casing _ List Page 78 Part Description Price Number Code O-Ring P7 FT1601 S552200045 Exhaust vent duct Assembly FT1002 H190200003 15-1 Stainless band (Ø100) S453100002 FT1603 15-2 Packing S552100064 FT1604 15-3 Exhaust vent duct S549100119 FT1611 15-4 Exhaust testing cap H850150049 FT1606 15-5...
  • Page 79 Kiturami Fire Tube Drawing Number List Mascot FT Combination Boiler Page 79 CH Block & DHW Block Ass’y_ Feature Initials Description KMC# Part Number IOM Ref CASING FTCW140 Exhaust Duct Assembly FT1002 H190200003 Air Intake Duct Assembly FT1010 H190200002 S115900025 FT1014 Control Air pressure switch...
  • Page 80 ‘B2’ - CH Block Ass’y_ List Page 80 CH Assembly Part Description Price Number Code CH Hydro block Assembly FT1100 H199990175 O-20 O-Ring P20 FT1513 S551200033 O-22 O-Ring P22 FT1644 S551200034 O-22A O-Ring P22A FT1515 S551200035 O-25 O-Ring P25 FT1516 S551200036 ‘B3’...
  • Page 81 Heat Exchanger & Tank _ Mascot FT Combination Boiler Page 81 Feature FTCW140 Heat Exchanger & Tank...
  • Page 82 Heat Exchanger & Tank _ LAARS Heating Systems Page 82 List FTCW140 Heat Exchanger & Tank Part Description Price Number Code O-22 O-Ring P22 FT1644 S551200034 3/4" Packing FT1646 S551100004 1" Packing FT1691 S551100005 FT1784 EX-Adaptor S549100223 FT1067 Exhaust pipe...
  • Page 83 Fan & Gas Valve _ Mascot FT Combination Boiler Feature Page 83 FTCW140 Blower and Gas Valve...
  • Page 84 Fan & Gas Valve _ List LAARS Heating Systems Page 84 FTCW140 Blower and Gas Valve Part Price Description Number Code Fan guide FT1532 H870060054 Fan rubber packing (1.0t) FT1721 S551100047 Mash FT1720 H140140003 Fan rubber packing (1.6t) FT1082 S551100071...
  • Page 85 The FT Series Wall Mounted, Combination Boiler Page 85 FTCW199...
  • Page 86 Casing _ Page 86 List FTCW199 Part Description N N o o t t e e s s Number O-Ring P7 FT1601 Exhaust vent duct Assembly FT1002 15_1 Stainless band (Ø100) FT1603 15_2 Packing FT1604 Exhaust vent duct 15_3 FT1611 Exhaust testing cap 15_4 FT1606...
  • Page 87 CH Block & DHW Block Ass’y_ The FT Series Wall Mounted, Combination Boiler Page 87 Feature FTCW199 CH Assembly B2 ‘B2’ CH Block Packing Sensor Ass’y ‘B3’ DHW Block Ass’y DHW Assembly B3...
  • Page 88 Page 88 ‘B2’ - CH Block Ass’y_ FTCW199 List CH Assembly B2 Part Description Notes Number CH Hydro block Assembly FT1937 O-20 O-Ring P20 FT1513 O-22 O-Ring P22 FT1644 O-22A O-Ring P22A FT1515 O-25 O-Ring P25 FT1516 3/4" Packing FT1646 1"...
  • Page 89 The FT Series Wall Mounted, Combination Boiler Page 89 Heat Exchanger & Tank _ Feature & Tank _ Feature FTCW199 Heat Exchanger & Tank...
  • Page 90 Page 90 Heat Exchanger & Tank _ FTCW199 List Heat Exchanger & Tank Part Description Notes Number O-22 O-Ring P22 FT1644 3/4" Packing FT1646 1" Packing FT1691 Exhaust pipe FT1823 Exhaust sensor bracket FT1529 EX-Adaptor FT1784 Exhaust overheat sensor FT1307 Exhaust pipe packing (lower) FT1836 Heat Exchanger...
  • Page 91 The FT Series Wall Mounted, Combination Boiler Page 91 Fan & Gas Valve _ Feature Fan & Gas Valve _ FTCW199 Feature...
  • Page 92 Page 92 Notes: For Product and Service VIDEOS Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement. Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Industrial Way, Rochester, NH, USA 03867 20-01 Document 1318G...

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