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Laars MASCOT FT MFTCW, Installation And Operation Instructions Manual, Page: 29 / 80

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Laars MASCOT FT MFTCW Installation And Operation Instructions Manual Download Page 29

Mascot FT Combination Boiler

Page 27

4.9  Gas Supply and Piping

 Combination boiler must be installed downstream of the gas meter for adequate gas supply. 

 Combination boiler gas connection pipe not less than a 1/2”.

Suggested Propane Gas (LP) Layout

SECTION 4.  Installation

Suggested Natural Gas (NG) Layout

Summary of Contents for MASCOT FT MFTCW

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

Page 2: ...ipe Termination 23 4 9 Gas Supply and Piping 25 4 10 Gas Supply Pressure 28 4 11 Gas Set Up and Adjustment 28 4 12 High Altitude Installations and Orifices 29 4 13 Natural Gas to Propane Conversion 30...

Page 3: ...ausing 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...

Page 4: ...e 2 3 4 5 6 7 8 9 10 11 12 13 F T C W 1 4 0 A 1 X N SERIES Mascot FT C Combi SIZE MBTU h 1 4 0 FUEL N Natural P Propane CONFIG W Wall Hung ALTITUDE A 0 10 000 Feet REVISION 1 First OPTIONS X Standard...

Page 5: ...900 9276 Fax 800 559 1583 Customer Service Service Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 Applications Engineering 1869 Sismet Road Mississauga Ontario Canada L4W...

Page 6: ...ameter A Air Intake collar 3 B Vent Pipe Collar 3 C CH Supply Adapter 1 NPT D CH Return Adapter 1 NPT E DHW Outlet Adapter 3 4 NPT F DHW Inlet Adapter 3 4 NPT G Gas Inlet Adapter 1 2 NPT H Condensate...

Page 7: ...on 11 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 Conden...

Page 8: ...tems Page 6 2 5 1 Central Heating flow Combination Boiler Heating Mode Water in the heating pipe is used for space heating 2 5 Product Flow Paths and Characteristics Hydronic Supply Hydronic Return Ve...

Page 9: ...r Mode Cold water passes through the exchanger and is heated via a mini indirect tank The domestic hot water DHW is provided on demand Integral Mini Indirect Tank DHW Domestic Hot Water Inlet Domestic...

Page 10: ...ETY READ BEFORE OPERATING If you do not follow these instructions exactly a fire or explosion could result causing property damage personal injury or loss of life A This appliance does not have a pilo...

Page 11: ...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 under w...

Page 12: ...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 13: ...Do not shut off the Boiler When you leave home for a long time do not shut off Boiler The Boiler has a freeze protection function The ceramic heater is installed inside of the heater s internal pipe...

Page 14: ...s gasoline and other flammable liquids Failure to keep Combination boiler area clear and free of combustible materials gasoline and other flammable liquids and vapors can result in severe personal inj...

Page 15: ...hen 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 wood screw...

Page 16: ...tal input rating of all equipment 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...

Page 17: ...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 the ve...

Page 18: ...including but not limited to ANSI Z224 1 NFPA 54 CAN CSA B149 1 and ULC S636 Failure to follow this manual and applicable codes may lead to property damage severe injury or death INSTALLATIONS IN CAN...

Page 19: ...s or materials unless it is specified The use of thermal insulation covering pipe and fittings is prohibited Do not apply an electric damper draft hood or vent damper with this Boiler Do not locate ve...

Page 20: ...er line extended above meter regulator assembly 3 ft 91 cm within a height 15 ft 457 cm above the meter regulator assembly I Clearance to service regulator vent outlet 3 ft 91 cm J Clearance to non me...

Page 21: ...nside corner H Clearance to each side of center line extended above meter regulator assembly 36 in 91 cm within a height 15 ft 4 57 m above the meter regu lator assembly I Clearance to service regulat...

Page 22: ...e 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 adjacent floor leve...

Page 23: ...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 24: ...aars 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 bottom of the socket fitting Fo...

Page 25: ...4 8 Vent Air Pipe Termination Note For using pipe more than 1 elbow reduce maximum allowable length 5 feet 1 5M for each additional 3 inch 90 degree elbow 2 5 feet 0 75M for each additional 3 inch 45...

Page 26: ...ons with Sloped Roof Horizontal Vent Termination cont Direct Vent Optional Sidewall Snorkel Terminations Concentric Vent Termination Direct Vent Optional Horizontal and Vertical Concentric Vent Side w...

Page 27: ...proper type of gas by checking the rating plate Mascot FT will function properly at elevations up to 10 000 feet 3050 m Refer to Section 4 12 for High Altitude Settings 2 The maximum inlet gas pressur...

Page 28: ...it CLOSE POSTION UNION FITTING MANUAL SHUT OFF VALVE GAS PIPE 4 9 Gas Supply and Piping Gas Line Valve Detail SECTION 4 Installation To facilitate any future maintenance it is also recommended that an...

Page 29: ...ly and Piping Combination boiler must be installed downstream of the gas meter for adequate gas supply Combination boiler gas connection pipe not less than a 1 2 Suggested Propane Gas LP Layout SECTIO...

Page 30: ...manifold pressure measurements for both MIN and MAX Fire are correct turn OFF the Control Display and set DIP switches 6 and 7 to the OFF position for Nominal Fire normal operation WARNING Always make...

Page 31: ...zle must be changed out to suit the installation altitude and the desired gas To order the Gas Line Nozzle to suit your installation altitude and gas please visit laars com support to get the contact...

Page 32: ...ge personal injury or death The qualified service agency is responsible for the proper installation of this kit The installation is not proper and complete until the operation of the converted applian...

Page 33: ...n or production of carbon monoxide may result causing property damage personal injury or loss of life The qualified service agency is responsible for the proper and complete installation of this kit T...

Page 34: ...he manifold pressure port For dual port manometers use the positive pressure side 15 While operating the water heater check CO2 measurement and refer to Table C 16 Adjust the Cap Screw Offset Adjustme...

Page 35: ...to the rating plate 21 Put the boiler cover back on and assemble tighten the 4 screws that hold the cover in place WARNING Always make sure that the Control Display is turned OFF before changing any D...

Page 36: ...ed Applicable Backflow Preventer Apply a backflow preventer valve in the DHW supply inlet water Inlet to the unit as required by local codes Use at least the MINIMUM pipe size for the entire boiler lo...

Page 37: ...tank in a system with the Laars Gas Combination Boiler Automatic air vent has been installed on the boiler If the combination boiler is installed in a closed water supply system such as one having a...

Page 38: ...hermostat goes to a controller which controls the pumps SECTION 4 Installation PRIMARY LOOP CH SUPPLY SPACE HEATING DHW INLET DHW OUTLET ZONE 1 ZONE 2 ZONE 3 FLOOR HEATING SECONDARY LOOP SPACE HEATING...

Page 39: ...valve Contacts in the zone valves provide a proper signal to the boiler when the valve is opened SECTION 4 Installation Do not exceed 12 apart PRIMARY LOOP SECONDARY LOOP SPACE HEATING CH SUPPLY SPACE...

Page 40: ...ting Boilers Model CASE 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...

Page 41: ...nly corrosion resistant materials for the condensate drain lines such as 1 2 PVC CPVC Polypropylene pipe or included plastic hose NOTICE For Category II and IV boilers be installed so as to prevent ac...

Page 42: ...this instruction See Section 8 of this installation book Failure to do so could result in substantial property damage sever personal injury or death WARNING To replace the Flow Restrictor 1 Being sur...

Page 43: ...ed by freezing is not covered under the warranty Manual Rocker switch maximum allowable current for each circulator is 16 amps at 125VAC Housing Nylon 66 UL 94V 2 Rocker Nylon 66 UL 94V 2 Terminal Cop...

Page 44: ...or LP Propane 11 Per Table B change dip switches 6 and 7 to a minimum fire state MIN Fire 12 Turn ON the Mascot FT 13 Open the manifold pressure port by loosening the screw two turns as shown in Figur...

Page 45: ...Mascot FT Combination Boiler Page 43 Notes...

Page 46: ...C FAN MOTOR R BL Y W BK 3 6 2 5 4 Exhaust Temperature Sensor CN5 RPM Meter 6 BL 5 W 4 R DC 5V Signal GND 5 4 6 Unuse JUMP 4 12 R W Display Control DHM Y Phase DHM Y Phase DHM X Phase DHM X Phase GND D...

Page 47: ...Mascot FT Combination Boiler Page 45 4 21 Ladder Diagram SECTION 4 Installation F B level Air Pressure Sensor...

Page 48: ...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 49: ...sed SELV 5V 13 7 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 St...

Page 50: ...f Display Power was Off Installer Mode C Hot Water DHW Set Point LOW Range 95 120 F 35 49 C DHW Set Point HIGH Range 121 140 F 49 5 60 C D Central Heat CH set point mode boiler only Toggle C F E Scrol...

Page 51: ...eters 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 Heati...

Page 52: ...splay will 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 Curre...

Page 53: ...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...

Page 54: ...ged 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 tem...

Page 55: ...int 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...

Page 56: ...y 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 Installer Paramet...

Page 57: ...rature setting during heating operation Operate in burner ON temperature setting Range 12 7 C 9 F 2 7 C 27 F Default 2 7 C 27 F 15 OF Warm Weather Shutdown This warm weather temperature setting will s...

Page 58: ...ring When 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 a...

Page 59: ...5 11 Error Mode 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 controll...

Page 60: ...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 appliance 3 Check Operating Temperatu...

Page 61: ...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 bur...

Page 62: ...nd 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 again 1 Ensure...

Page 63: ...Mascot FT Combination Boiler Page 61 6 2 Fault Tree Analysis 1 Flame detection...

Page 64: ...Systems Page 62 6 2 Fault Tree Analysis 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 E35 Exhaust NTC...

Page 65: ...Make sure that the filter in the cold water supply line is not clogged with debris Make sure that the gas supply type is correct Hot water temperature fluctuates at the opened tap Make sure that the f...

Page 66: ...iler 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 power switch ins...

Page 67: ...f 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 not running If BLOWE...

Page 68: ...ealed Call your qualified service 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...

Page 69: ...personal injury death or 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 h...

Page 70: ...old 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 combination boil...

Page 71: ...ectrical power to the combination boiler 3 Turn off the gas valve 4 Close water supply valve on the inlet to the appliance If there is no valve turn off main water valve 5 Open the hot water faucets c...

Page 72: ...ll Is there space for a drain which is close to the Boiler Are there any combustible materials near the Boiler and vent pipe Is the air supply sufficient for proper operation of the Boiler Are the pro...

Page 73: ...the pressure relief valve of CH Plumbing at least 1 in diameter Is the pressure relief valve of DHW Plumbing at least 3 4 in diameter Have you installed the pressure relief valve on the hot water outl...

Page 74: ...29 FT1025 Pressure gauge 0248 31 FT1027 Condensate trap cover 0175 A1 FT1100 CH Hydro block Ass y 0042 33 FT1109 DHW Outlet Pipe Kiturami Fire Tube Drawing Number List IOM Ref Part Number Description...

Page 75: ...HANGER ASSY S549100166 60 FT1304 Exhaust Pipe H140240002 62 FT1306 Exhaust sensor BK S311200027 63 FT1307 Exhaust overheat sensor H130120199 65 FT1309 Heat Exchanger Ass y S311400021 65_1 FT1310 Overh...

Page 76: ...LAARS Heating Systems Page 74 Heat Exchanger Tank 70 71 72 74 65 60 62 63 75 76 77 69 68...

Page 77: ...W filter Cap S514100105 47 FT1122 DHW connector H199990176 A2 FT1200 DHW hydro Block Ass y S419100040 55 FT1218 CH return pipe S311200030 56 FT1219 CH return sensor S549100155 57 FT1220 3way valve S41...

Page 78: ...LAARS Heating Systems Page 76 Blower and Gas Valve 85 89 84 89 87 89 88 89 83 83 86 1 86 2 86 3 86 2 86 4 86 5 83 1...

Page 79: ...S551200001 86_2 FT1415 Gas valve O Ring 86_3 FT1416 Gas valve 86_4 FT1417 Gas valve inlet adaptor 86_5 FT1418 Gas valve BK S412190040 87 FT1419 Gas pipe down S349100039 88 FT1420 Gas inlet adaptor S55...

Page 80: ...H 03867 603 335 6300 Fax 603 335 3355 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars com Litho in U S A Laars Heating Systems 1503 Document 1318 Dimensions...

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