Laars FT Series Installation And Operation Instructions Manual Download Page 13

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The FT Series Wall Mounted, Combination Boiler

Page 13

2.6 Product Flow Paths and Characteristics

DHW Supply

Vent

Combustion

Air

Vent

Combustion

Air

DHW Return

FTCW140

Vent

Combustion

Air

Hydronic Supply

Hydronic Return

DHW Supply

Vent

Combustion

Air

DHW Return

FTCW199

Domestic Hot
Water Inlet

Domestic Hot
Water Outlet

2.6.1

Domestic Hot Water flow. Combination Boiler Domestic Hot Water Mode.

Cold water passes through the exchanger and is heated via a mini indirect tank.

The domestic hot water (DHW) is provided on demand.

Summary of Contents for FT Series

Page 1: ...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 donn es dans cette notice...

Page 2: ...ropane Conversion 37 4 15 Plumbing Guidelines 41 4 15 1 External Plumbing and Water Connection Guidelines 41 4 15 2 Applicable Backflow Preventer 41 4 15 3 Diaphragm type Expansion tank 41 4 15 4 Zoni...

Page 3: ...erience has shown that most operating problems are caused by improper installation All installations must be made in accordance with 1 American National Standard Z223 1 NFPA54 Latest Edition National...

Page 4: ...Screens 2 O Ring and Gasket Kit 1 Outdoor Sensor with screws and anchors 1 4 5 GPM Flow Restrictor dark blue N A 1 Propane Conversion Orifice 1 1 2 Included with the Unit continued A 3 2 GPM Flow Res...

Page 5: ...Propane CONFIG W Wall Hung ALTITUDE A 0 10 000 Feet REVISION 1 First OPTIONS X Standard PUMP N with Pump 1 M SECTION 2 Product Characteristics 2 1 Model Nomenclature model number The Model Nomenclatu...

Page 6: ...ner System Single Orifice Premixed Fuel Modulation Gas Valve System Combination modulating Current proportional Minimum Flow Rate 0 5 GPM Dimensions W17 25 H29 0 D15 5 Shipping Weight 111 lbs 50 kg Su...

Page 7: ...me Sensing Burner System Single Orifice Premixed Fuel Modulation Gas Valve System Combination modulating Current proportional Minimum Flow Rate 0 5 GPM Dimensions W19 6 H32 0 D16 3 Shipping Weight 130...

Page 8: ...on Diameter A Air Intake collar 3 B Vent Pipe Collar 3 C CH Supply 1 NPT D CH Return 1 NPT E DHW Outlet 3 4 NPT F DHW Inlet 3 4 NPT G Gas Inlet 3 4 NPT H Condensate Line 1 2 NPT 2 3 Dimensions FTCW140...

Page 9: ...Boiler Page 9 Description Diameter A Air Intake collar 3 B Vent Pipe Collar 3 C CH Supply 1 NPT D CH Return 1 NPT E DHW Outlet 3 4 NPT F DHW Inlet 3 4 NPT G Gas Inlet 3 4 NPT H Condensate Line 1 2 NPT...

Page 10: ...CH Return Connection 12 CH Pressure Gauge 13 DHW Outlet Connection 14 Gas Inlet Connection 15 DHW Inlet Connection filter and flow restrictor Name of Component 16 Condensate Connection 17 Condensate T...

Page 11: ...Connection 11 CH Return Connection 12 CH Pressure Gauge 13 DHW Outlet Connection 14 Gas Inlet Adapter 15 DHW Inlet Connection filter and flow restrictor Name of Component 16 Condensate Connection 17 C...

Page 12: ...low Paths and Characteristics FTCW140 Vent Combustion Air Hydronic Supply Hydronic Return FTCW199 CH Supply Hydronic Supply CH Return Hydronic Return 2 5 1 Central Heating flow Combination Boiler Heat...

Page 13: ...DHW Return FTCW140 Vent Combustion Air dronic Supply Hydronic Return DHW Supply Vent Combustion Air DHW Return FTCW199 Domestic Hot Water Inlet Domestic Hot Water Outlet 2 6 1 Domestic Hot Water flow...

Page 14: ...s exactly a fire or explosion could result causing property damage personal injury or loss of life A This appliance does not have a pilot It is equipped with an ignition device which automatically lig...

Page 15: ...DO NOT use this Boiler if any part has been under water Immediately call a qualified technician for inspecting the Boiler and replacing any part of the control system and gas control which have been u...

Page 16: ...ed 5 Check the area around the appliance and remove any combustible or flammable materials Remove laundry or any other items that are on or near the boiler or vent pipe open When in Operation CAUTION...

Page 17: ...s for ventilation Call a qualified service technician for immediate repair Gas leakage test Gas supply line must be inspected regularly Do not shut off the Boiler When you leave home for a long time d...

Page 18: ...Combination boiler area clear and free of combustible materials gasoline and other flammable liquids and vapors can result in severe personal injury death or substantial property damage The Combinatio...

Page 19: ...vel and then drill 4 holes 0 47 dia with a 1 2 drill bit into the wall through the Bracket If mounting to a concrete wall then use the concrete anchors If onto wood or 5 8 16 mm plywood then use the w...

Page 20: ...t in the enclosure When communicating to the outdoors through horizontal ducts each opening shall have a minimum free area of not less than 1square inch per 2000 Btu hr 1100 square mm kW of total inpu...

Page 21: ...tion Code CAN CSA B149 1 or applicable provisions of the local building codes CAUTION NOTICE The instructions for the installation of the venting system shall specify that the horizontal portions of t...

Page 22: ...B149 1 and ULC S636 Failure to follow this manual and applicable codes may lead to property damage severe injury or death WARNING Use of cellular core PVC ASTM F891 cellular core CPVC or Radel polyph...

Page 23: ...lectric damper draft hood or vent damper with this Boiler Do not locate vent termination where exposed to prevailing winds Moisture and ice may fall on surface around vent termination To prevent deter...

Page 24: ...285 36 91cm inlet to building or the combustion air inlet 399 850 Other than Direct vent 4 ft 1 2m below 36 inches 91 cm to any other appliance or to side of opening 1 ft 30cm above opening NT 80 onl...

Page 25: ...that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide with alarm and battery back up may be installed on the next adjacen...

Page 26: ...tre prises pour chaque appareil toujours raccord au syst me d vacuation commun et qui fonctionne alors que d autres appareils toujours raccord s au syst me d vacuation ne fonctionnent pas 1 Sceller to...

Page 27: ...our selected PVC CPVC vent pipe and boiler collar socket You can select to the size of vent pipe 2 3 according to the installation conditions Push the pipe into the collar socket until it touches the...

Page 28: ...ventilation air Model FTCW140 FTCW199 Maximum Input BTU H 140 000 199 000 Indoor make up air is provided a mini mum free area of 1 in 2 per 1 000 BTU H 140 in2 13 1 4 W x 13 1 4 H 199 in2 13 1 4 W x...

Page 29: ...a Minimum of 12 apart 12 MIN Apart Exhaust 90o Elbow Exhaust Screen Exhaust Exhaust 12 MIN 1 MIN Sill Combustion Intake Combustion Intake SIDE VIEW FRONT VIEW Exterior Wall NOTE Must be 12 Minimum dis...

Page 30: ...25mm to 4 100mm Combustion Air Vent 12 30cm Minimum clearance above highest anticipate snow level Vent 12 Minimum clearance above highest anticipated snow level or grade whichever is greater 12 Minimu...

Page 31: ...the appliance is fitted for the proper type of gas by checking the rating plate FT will function properly at elevations up to 10 000 feet 3050 m Refer to Section 4 12 for High Altitude Settings 2 For...

Page 32: ...E GAS PIPE Gas Line Valve Detail The gas shut off valve in the gas supply line should be installed close to the unit To facilitate any future maintenance it is also recommended that an approved gas un...

Page 33: ...y The gas piping must not be less than 1 2 for FTCW140 models and 3 4 female NPT on FTCW199 models Suggested Natural Gas NG Layout NOTE Total gas supply capacity must not be less than the total demand...

Page 34: ...t pressure Inlet Gas Pressure Port Inlet Gas Pressure Port FTCW140 Offset Adjustment Do Not Adjust without using a combustion analyzer to verify adjustment Adjust ONLY when in MIN Fire and when using...

Page 35: ...0 1 999 ft above sea level If your Mascot FT is installed at an altitude of 2 000 ft or greater the correct altitude setting should be set according to Section 4 13 of the Mascot FT Install and Opera...

Page 36: ...aximum efficiencies at higher altitudes 2 000 to 10 000 the FT does have an adjustment in the Installer Parameters Mode Follow these instructions if your installation is at 2 000 10 000 14 It may be n...

Page 37: ...he proper installation of this kit The installation is not proper and complete until the operation of the converted appliance is checked as specified in the manufacturer s instructions supplied with t...

Page 38: ...lete installation of this kit The installation is not proper and complete until the operation of the converted appliance is checked as specified in the manufacturer s instruction supplied with the kit...

Page 39: ...199 ON OFF MIN Fire Normal Operation MAX Fire Normal Operation NG Natural LP Propane 3 Vent Size 2 Vent Size ON OFF ON ON ON OFF OFF ON OFF ON ON ON FTCW140 FTCW199 7 Install the new LP propane nozzl...

Page 40: ...____________________ Cette unit a t converti ____ ____ ____ten ______gaz en utilisant le kit num ro _____ par______________ nom et soci t _________________________________ responsable ________________...

Page 41: ...h heat within 12 of the bottom connections of the unit The DHW inlet and outlet connections are 3 4 The CH supply and return connections are 1 The system piping must be a min of 1 1 4 see Sections 4 1...

Page 42: ...ulator 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 Contacts in the zone valves provide...

Page 43: ...ed Mixing Valve PRIMARY LOOP CH SUPPLY CH RETURN SPACE HEATING ZONE 1 ZONE 2 ZONE 3 SECONDARY LOOP SPACE HEATING TO DRAIN Make Up Water TO DRAIN DHW OUTLET DHW INLET 11 4 Min Piping Do not exceed 12 S...

Page 44: ...E ACME F 82 This safety relief valve 30 psi is shipped loose for field installation An approved ASME HV Pressure Relief Valve must be installed on the DHW supply line as close to the unit as possible...

Page 45: ...ng the first year of operation please check the neutralizer every few months for depletion Apply only corrosion resistant materials for the condensate drain lines such as 1 2 PVC CPVC Polypropylene pi...

Page 46: ...t off and the unit must be drained before proceeding with this instruction See Section 8 of this installation book Failure to do so could result in substantial property damage sever personal injury or...

Page 47: ...Read understand and follow all wiring instructions Do not disconnect the power supply when the unit is in normal operation Damage caused by freezing is not covered under the warranty Manual Rocker sw...

Page 48: ...detection time 6s High Low Water Level Recover time 6s Document 4288D The FT Series Wall Combi Gas Conversion Kit Gas Valve Adjustment Port Figure D Table B DIP Switch Settings Shown is a Model 140 wi...

Page 49: ...The FT Series Wall Mounted Combination Boiler Page 49 4 21 Control Board Electrical Diagram Control Board...

Page 50: ...Page 50 4 22 Ladder Diagram F B level Air Pressure Sensor...

Page 51: ...5D 1 RS 485 RS485 SELV 5V 2 GND SELV 5V 3 RS485 SELV 5V CN4 LWD1140 06D 1 FAN Not Used 2 GND SELV 30V 3 VDD SELV 14V 4 Fan power start coil SELV 30V 5 Fan power end coil SELV 30V 6 Fan speed feedback...

Page 52: ...SP S Over Heat temperature sensor SELV 5V 14 CN14 SMW250 09D 1 DHM GND SELV 14V 2 DHM Stepper motor position SELV 14V 3 VDD SELV 14V 4 DHM Stepper motor coil X phase SELV 14V 5 DHM Stepper motor coil...

Page 53: ...21 140 F 49 5 60 C D Central Heat CH set point mode boiler only Toggle C F E Scroll Select Turn to scroll tap to select clockwise or counterclockwise The Control Display has a Control Dial E 4 buttons...

Page 54: ...et 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 In...

Page 55: ...ll go through a Start Up checklist and briefly show a sequence of diagnostic codes before entering into the Operating Mode It will then display the following information Indicate Example Current Opera...

Page 56: ...ent 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 oper...

Page 57: ...al 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 contro...

Page 58: ...us 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 Pre...

Page 59: ...eters Start by turning OFF the Power to the Display Control Then with the power OFF Press and HOLD more than 5 seconds the Button B to get into the Installer Mode Rotate Dial E until you find the Inst...

Page 60: ...lt 180F 12 7 C less than Minimum Temperature to 82 C Default 82 C 17 cL Setting for Heating Minimum Temperature Range 86 F to 9 degrees F less than Maximum Temperature Default 86 F 30 C to 12 7degrees...

Page 61: ...hen the signal rises above 1 5 volts the appliance will ignite As the signal continues to rise towards its maximum of 10 volts the appliance will increase in set point temperature Adjust 16 cH and 17...

Page 62: ...e Flashing Indicate Example 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...

Page 63: ...dip switch Max Fire setting is ON Switches 6 and 7 should be OFF for normal operation 2 Check if CH inlet pipe is blocked Ensure there is enough water flowing to the appli ance 3 Check Operating Tempe...

Page 64: ...replace the main control Hard Lock 41 Fan Speed too High with Flame On Press the Power button to clear the Error Code If Error happens again 1 Check the vent connections for blockages 2 Check the burn...

Page 65: ...he display and or the main control Soft Lock 80 Low Water Level Sensor Low Water Level Detected Four 4 Consecutive times This Error Code will go away when the condition is remedied If Error happens ag...

Page 66: ...Page 66 6 2 Fault Tree Analysis 1 Flame detection...

Page 67: ...ombination 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 E32 DHW NTC open or short E33 OP NTC open or short E...

Page 68: ...rature fluctuates at the opened tap Make sure that the filter in the cold water supply line is clean Make sure that the gas supply type is correct Check the supply gas pressure is sufficient The blowe...

Page 69: ...to power boiler Is there 120 Volts at the service switch Troubleshoot and correct the power supply to the manual switch Is the ON OFF POWER SWITCH inside boiler case turned on Turn ON the manual powe...

Page 70: ...0 RPM when turned off Reset using manual reset screen on control panel Power button Check wire harness for loose connections and pin engagement at blower Connections Boiler in standby mode and blower...

Page 71: ...ervice technician if you notice any problems Check the relief valve Inspect the Combination boiler relief valve and the relief valve discharge pipe for any signs of weeping or leakage If the relief va...

Page 72: ...r sub stantial property damage This discharge line must be installed by a qualified heating installer or a service technician Before proceeding verify that relief valve outlet has been piped to a safe...

Page 73: ...Remove the cold water inlet filter from the combination boiler and clean out any residues 10 Reinsert the filter and ensure the filter cap is securely tightened 11 Connect electrical power to the comb...

Page 74: ...Filter 8 4 Freeze Protection FT Series Boilers are certified for indoor use only and are not design certified for placement outdoors Proper precautions for freeze protection are recommended for boiler...

Page 75: ...tems to consider are Consider the effects of reduced heat transfer and an increase in head pressure against the system circulator For example A 30 mixture of glycol will result in a BTU output loss of...

Page 76: ...least 12 above the exterior grade Is the total vent length within the maximum vent length restriction Have you checked the air vent piping for leaks Have you properly supported the vent termination Ar...

Page 77: ...Mascot FT Combination Boiler Page 77 Casing _ Feature SECTION 10 Parts List and Illustrations FTCW140 FT1894 Mounting Bracket...

Page 78: ...g FT1013 S551100045 19 Gasket bracket FT1797 H140320030 20 Safety valve rubber pad FT1921 S551100063 21 Air pressure sensor 80 FT1804 S264100067 22 PCB Control NGTX 900CP FT1899 S115900025 23 Ignition...

Page 79: ...r S549100145 44 FT1120 DHW filter mash S549100141 45 FT1121 DHW filter Cap S514100105 47 FT1122 DHW connector H199990176 A2 FT1200 CH hydro Block Assembly S419100040 55 FT1526 CH return pipe S31120003...

Page 80: ...59 CH Return pipe FT1218 S419100040 60 CH Return sensor FT1219 S311200030 61 3 way valve FT1220 S549100155 62 CH Supply pipe FT1527 S419100039 63 Pump FT1222 H160320029 B3 DHW Block No Description Pa...

Page 81: ...Mascot FT Combination Boiler Page 81 Heat Exchanger Tank _ Feature Heat Exchanger Tank FTCW140...

Page 82: ...310 S311400021 69 3 Burner upper case FT1926 H870060125 69 4 Burner packing FT1927 S551100083 69 5 Burner FT1314 H130210023 69 7 Ignition rod FT1315 S333100033 69 8 Ignition rod gasket FT1316 S5542000...

Page 83: ...Mascot FT Combination Boiler Page 83 Fan Gas Valve _ Feature Blower and Gas Valve FTCW140...

Page 84: ...lve Assembly FT1413 H160430012 92 1 Gas valve outlet adaptor FT1919 H870060055 92 2 Gas valve O Ring FT1727 S551200001 92 3 Gas valve FT1416 S172110003 92 4 Gas valve inlet adaptor FT1538 S345100010 9...

Page 85: ...The FT Series Wall Mounted Combination Boiler Page 85 FTCW199...

Page 86: ...ent rubber packing FT1013 19 Gasket bracket FT1797 20 Safety valve rubber pad FT1921 21 Air pressure sensor 80 FT1804 22 Control bracket FT1751 23 Ignition transformer ST1006 24 Control sub bracket FT...

Page 87: ...The FT Series Wall Mounted Combination Boiler Page 87 FTCW199 CH Block DHW Block Ass y_ Feature B2 CH Block Ass y B3 DHW Block Ass y DHW Assembly B3 CH Assembly B2 Packing Sensor...

Page 88: ...eturn sensor FT1219 61 3way valve FT1220 62 CH Supply pipe FT1808 63 Pump FT1798 B3 DHW Block Ass y_ Li No Description Part Number Notes B3 DHW Hydro block Assembly FT1938 O 15 O Ring P15 FT1685 O 16...

Page 89: ...The FT Series Wall Mounted Combination Boiler Page 89 Heat Exchanger Tank _ Feature Tank _ Feature FTCW199 Heat Exchanger Tank...

Page 90: ...level sensor FT1325 77 Flame detector sensor bracket FT1669 78 Flame detector sensor FT1327 79 Flame detector sensor cover FT1069 80 Condensate trap Assembly FT1783 Blower and Gas Valve next page Fan...

Page 91: ...The FT Series Wall Mounted Combination Boiler Page 91 Fan Gas Valve _ Feature Fan Gas Valve _ Feature FTCW199...

Page 92: ...change without notice in accordance with our policy of continuous product improvement H2372800G For Product and Service VIDEOS 20 01 Document 1318G Customer Service and Product Support 800 900 9276 Fa...

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