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  5. Installation And Operation Instructions Manual

Laars mascot ft MFTHW Installation And Operation Instructions Manual

Manual is about: Wall-Mounted, Modulating Gas, Condensing, Heating Only, Boiler

Summary of mascot ft MFTHW

  • Page 1

    Installation and operation instructions document 1342e h2375000e warning 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 vicin...

  • Page 2

    Laars heating systems table of contents section 1 product accessories 1.1 introduction ........................................................... 1 1.2 included with the appliance ................................... 1 section 2 product characteristics 2.1 model nomenclature ...........................

  • Page 3

    Mascot ft, heating only, boiler page 1 item description qty laars wall mounted, boiler mfthw (all sizes) 1 installation instructions and user’s manual 1 condensate hose 1 wall mount bracket 1 2 types of wall anchors 4 pressure relief valve (ch line 3/4˝ 30psi) model: cash acme f-82 1 mesh screens 3”...

  • Page 4

    Laars heating systems page 2 items descriptions qty propane conversion orifice 1 o-ring and gasket kit 1 outdoor temperature sensor with anchors and screws 1.2 included with the appliance (continued) figure 1. Model nomenclature 2 3 4 5 6 7 8 9 10 11 12 13 f t h w a 1 x n series mascot ft h - heatin...

  • Page 5

    Mascot ft, heating only, boiler page 3 model name mfthw80 mfthw100 gas input rate max 80,000 btu/h 100,000 btu/h min 16,000 btu/h 20,000 btu/h installation indoor / wall hung type flue system sealed combustion direct / single vent /sidewall vent vent run 2˝(50ft) , 3˝(100ft) schedule 40 cpvc, pp ori...

  • Page 6

    Laars heating systems page 4 2.2 specifications,125mbhand140mbh model name mfthw120 mfthw140 gas input rate max 120,000 btu/h 140,000 btu/h min 24,000 btu/h 28,000 btu/h installation indoor / wall hung type flue system sealed combustion direct / single vent /sidewall vent vent run 2˝(50ft) , 3˝(100f...

  • Page 7

    Mascot ft, heating only, boiler page 5 2.2 specifications,199mbh model name mfthw199 gas input rate max 199,000 btu/h min 19,900 btu/h installation indoor / wall hung type flue system sealed combustion direct / single vent / concentric vent vent run 2˝(50ft) , 3˝(100ft) schedule 40 cpvc, pp orifice ...

  • Page 8

    Laars heating systems page 6 description diameter a air intake collar 3˝ b vent pipe collar 3˝ c 'ch' supply adapter 1 ¼˝ d 'ch' return adapter 1 ¼˝ e gas inlet adapter 3/4˝ f condensate line 1/2˝ mfthw 80/100/120/140 heating only boiler 2.3 dimensions.

  • Page 9

    Mascot ft, heating only, boiler page 7 description diameter a air intake collar 3˝ b vent pipe collar 3˝ c 'ch' supply adapter 1 ¼˝ d 'ch' return adapter 1 ¼˝ e gas inlet adapter 3/4˝ f condensate line 1/2˝ mfthw 199 heating only boiler 2.3 dimensions.

  • Page 10

    Laars heating systems page 8 2.4 names of components mfthw 80/100 heating only boiler no name of component 1 air vent (air eliminator) 2 air intake collar 3 air / gas mixing pipe 4 gas inlet pipe 2 5 gas valve 6 exhaust duct 7 low water temperature sensor 8 op sensor 9 flame detecting sensor 10 main...

  • Page 11

    Mascot ft, heating only, boiler page 9 2.4 names of components (continued) mfthw 120/140 heating only boiler no name of component 1 air vent (air eliminator) 2 air intake collar 3 air / gas mixing pipe 4 gas inlet pipe 2 5 gas valve 6 exhaust duct 7 low water temperature sensor 8 op sensor 9 flame d...

  • Page 12

    Laars heating systems page 10 mfthw 199 heating only boiler no name of component 1 air vent (air eliminator) 2 air intake collar 3 gas valve 4 gas inlet pipe 2 5 air / gas mixing pipe 6 gas inlet pipe 1 7 exhaust duct 8 op sensor 9 low water level sensor 10 main pcb 11 flame detecting sensor 12 cont...

  • Page 13

    Mascot ft, heating only, boiler page 11 water in the heating pipe is used for space heating. 2.5 productflowpathsandcharacteristics hydronic supply hydronic return vent combustion air space heating water return space heating water supply gasinput air intake.

  • Page 14

    Laars heating systems page 12 section 3 . Safety regulations 3.1 safety symbols warning warning to avoid product damage, personal injury, or even possible death, carefully read, understand, and follow all the instructions in the installation and operation manual before installation, operation and se...

  • Page 15

    Mascot ft, heating only, boiler page 13 danger vapors from flammable liquids will explode and catch on fire. These will cause death or severe burns. Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the appliance. Keep flammable products far...

  • Page 16

    Laars heating systems page 14 before operation 1. Check the gas type (ng/lp) when using or moving the unit for the first time, check if gas type matches with the gas type of the boiler. Check whether the gas type which is supplied is ng (natural gas) or lp (propane) and also check the boiler gas typ...

  • Page 17

    Mascot ft, heating only, boiler page 15 section 4. Installation 4.1 location and clearances the mascot ft must be mounted to a suitable wall by a qualified heating contractor under the guidelines of a boiler. The wall may be of concrete or wood. Suitable fasteners for concrete or wood must be used. ...

  • Page 18

    Laars heating systems page 16 4.2 wall mount bracket • 4.2.1 the installation height and location for your mascot ft depends on your installation scenario. With all clearances considered, and given adequate positioning for air supply and venting, you will need to determine the best position to mount...

  • Page 19

    Mascot ft, heating only, boiler page 17 table 2. Required combustion air pipe material. Combustion air installation standards material united states canada abs ansi/astm d1527 pvc, sch 40 ansi/astm d1785 or d2665 air pipe material must be chosen cpvc, sch 40 ansi/astm f441 cpvc, sch 40, ansi/astm, p...

  • Page 20

    Laars heating systems page 18 the mascot ft is standard as a natural gas boiler and must be converted if propane is the desired gas, unless specifically manufactured for propane. Adequate drainage • the appliance should be installed not to damage the adjacent area. If such locations cannot be avoide...

  • Page 21

    Mascot ft, heating only, boiler page 19 table 3. Required exhaust vent material. Venting installation standards material united states canada stainless steel ul 1738 venting must be ulc-s636 certified for use as pvc, sch 40 ansi/astm d1785 venting material. The venting material must be chosen cpvc, ...

  • Page 22

    Laars heating systems page 20 4.5generallocationguideline 1. Vent system installation must be in accordance with local codes or, in the absence of local codes, the national fuel gas code, ansi z224.1 /nfpa 54 and/or csa b149.1, natural gas and propane installation code. 2. The boiler is designed to ...

  • Page 23

    Mascot ft, heating only, boiler page 21 4.6locationsforventpipeterminator description us direct vent instal- lations canadian direct vent installations a clearance above grade, veranda, porch, deck, or balcony 12 in (30 cm) 12 in (30 cm) b clearance to window or door that may be opening 12 in (30 cm...

  • Page 24

    Laars heating systems page 22 description us non-direct canadian non-direct a clearance above grade, veranda, porch, deck, or balcony 12 in (30 cm) 12 in (30 cm) b clearance to window or door that may be opening 48 in (120 cm) below or to side of opening; 12 in (30 cm) above opening 36 in (91 cm) c ...

  • Page 25

    Mascot ft, heating only, boiler page 23 4.6.3ventingrequirementsinthe commonwealth of massachusetts in massachusetts the following items are required if the side-wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to de...

  • Page 26

    Laars heating systems page 24 notice at the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in op...

  • Page 27

    Mascot ft, heating only, boiler page 25 4.7 air supply and vent connections at the appliance 4.7.2 direct venting the boiler uses 3˝ or 2˝ diameter exhaust and 3˝ or 2˝diameter intake air ducts. To ensure the draw of air directly from and exhaust of air directly to the outside of the building, creat...

  • Page 28

    Laars heating systems page 26 4.7.3 indoor combustion air 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-14...

  • Page 29

    Mascot ft, heating only, boiler page 27 4.8vent/airpipetermination note : for using more than 1 elbow in your vent pipe, 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-degree elbow • 8 feet (2.4m) for each a...

  • Page 30

    Laars heating systems page 28 • direct vent - optional side wall terminations 4. Concentric vent termination • direct vent - optional horizontal and vertical concentric vent strap 1" (25mm) to 4" (100mm) maintain 12" (300 mm)min combustion air vent us 12 in (30cm) vent combustion air side wall kit (...

  • Page 31

    Mascot ft, heating only, boiler page 29 warning: open flame can cause gas to ignite and result in property damage, severe injury, or loss of life. Note: the mascot ft appliance and all other gas appliances sharing the gas supply line must be firing at maximum capacity to properly measure the inlet s...

  • Page 32

    Laars heating systems page 30 4.9 gas supply and piping (continued) natural gas pipe sizing (maximum) maximum capacity of pipe in cubic feet of gas per hour for gas pressures of 0.5psi or less and a pressure drop of 0.5 inch water column. (based of a 0.60 specific gravity gas) for reference only. Re...

  • Page 33

    Mascot ft, heating only, boiler page 31 propane gas pipe sizing (maximum) intended use : pipe sizing between single-or second-stage (low pressure) regulator and appliance. For reference only. Referenced from gas pipe manufacturer specifications for actual delivery capacity. The doe standard for natu...

  • Page 34

    Laars heating systems page 32 4.9 gas supply and piping (continued) the gas connection fitting on the unit is 3/4˝ female npt. The supply line must be sized for the maximum output of the boiler model being installed. If there are additional gas appliances from the main supply line, you must measure ...

  • Page 35

    Mascot ft, heating only, boiler page 33 other appliance sediment trap gas regulator (supply press 12˝ ) lp gas tank other appliance sediment trap boiler must be installed downstream of the gas meter for adequate gas supply. Boiler gas connection pipe not less than a 1/2”. Suggested propane gas (lp) ...

  • Page 36

    Laars heating systems page 34 4.10 gas supply pressure the appliance and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures in excess of 1/2 psi (3.5 kpa). The appliance must be isolated from the gas supply...

  • Page 37

    Mascot ft, heating only, boiler page 35 4.11 gas setup and adjustment for the step by step process to measure co2valuesonthemascotft,pleaserefertosteps12 thru step 22 in section 4.13 of this installation manual. Table15. Co2 values table16. Manifold pressures warning installer is required to verify ...

  • Page 38

    Laars heating systems page 36 # altitude of installation 0 0~1999 ft (0~609 m) 1 2,000~4,499 ft (610~1,645 m) 2 4,500~7,699 ft (1,646~2,346 m) 4 7,700~10,000 ft (2,347~3,048 m) high altitude settings (2,000 ~ 10,000 ft) 1. With the power turned off, press the 'modes button' for 5 seconds to get into...

  • Page 39

    Mascot ft, heating only, boiler page 37 4.13naturalgastopropaneconversionlaarskitdocument#4296 customer service and product support: 800.900.9276 • fax 800.559.1583 headquarters: 20 industrial way, rochester, nh, usa 03867 • 603.335.6300 • fax 603.335.3355 1869 sismet road, mississauga, ontario, can...

  • Page 40

    Laars heating systems page 38 customer service and product support: 800.900.9276 • fax 800.559.1583 headquarters: 20 industrial way, rochester, nh, usa 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...

  • Page 41

    Mascot ft, heating only, boiler page 39 customer service and product support: 800.900.9276 • fax 800.559.1583 headquarters: 20 industrial way, rochester, nh, usa 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...

  • Page 42

    Laars heating systems page 40 4.14 plumbing guidelines customer service and product support: 800.900.9276 • fax 800.559.1583 headquarters: 20 industrial way, rochester, nh, usa 03867 • 603.335.6300 • fax 603.335.3355 1869 sismet road, mississauga, ontario, canada l4w 1w8 • 905.238.0100 • fax 905.366...

  • Page 43

    Mascot ft, heating only, boiler page 41 4.14 plumbing guidelines external plumbing and water connection guidelines - ensure pipe material meets local codes and industry standards. - the pipe end must be clean and free of debris. - do not apply torch heat within 12˝ of the bottom connections of the u...

  • Page 44

    Laars heating systems page 42 do not exceed 12" apart primary loop secondary loop (space heating) ch supply (space heating) primary/secondary connection ch return circulation pump pressure relief valve expansion tank air separator (closed type) isolation valve check valve gate valve 4.14 plumbing gu...

  • Page 45

    Mascot ft, heating only, boiler page 43 do not exceed 12" apart primary loop secondary loop (space heating) ch supply (space heating) primary/secondary connection zone 1 zone 2 zone 3 floor heating ch return circulation pump pressure relief valve expansion tank air separator (closed type) isolation ...

  • Page 46

    Laars heating systems page 44 primary loop ch supply (space heating) zone 1 zone 2 zone 3 floor heating secondary loop (space heating) do not exceed 12" apart ch return circulation pump pressure relief valve expansion tank air separator (closed type) isolation valve check valve gate valve 4.14 plumb...

  • Page 47

    Mascot ft, heating only, boiler page 45 ch supply ch return dhw pump pressure relief valve indirect dhw tank isolation valve 2-way valve mixing valve dhw pump indirect dhw tank ch supply ch return dhw pump pressure relief valve indirect dhw tank isolation valve 2-way valve mixing valve dhw pump indi...

  • Page 48

    Laars heating systems page 46 4.15pressurereliefvalve pressure relief valve must be installed on the ch supply line & dhw outlet line as close to the unit as possible. (ch supply line: maximum 30psi, dhw outlet line : maximum 150psi). No other valves should be placed between the pressure relief valv...

  • Page 49

    Mascot ft, heating only, boiler page 47 4.16disposalofcondensate 1 2 3 4 condensate drain pipe condensate trap 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 regulat...

  • Page 50

    Laars heating systems page 48 4.17 electrical wiring connections this appliance must be electrically grounded. Ensure the electrical receptacle that the boiler will be plugged into, is properly grounded; if wiring directly. Do not attach the ground wire to either the gas or the water piping as plast...

  • Page 51

    Mascot ft, heating only, boiler page 49 4.18 dip switches system control setting dip switches 6 and 7 have to be set in the off position when the boiler is running normally. Dip switches 1, 2, and 3 are system switches and are factory set to the boiler model and size and should not be touched. Maxim...

  • Page 52

    Laars heating systems page 50 4.19controlboard,electricaldiagram control board.

  • Page 53

    Mascot ft, heating only, boiler page 51 4.20 ladder diagram.

  • Page 54

    Laars heating systems page 52 4.21 electrical connections connector description ht selv #, location, type pin label cn9 65001ws-12 1 case ground ht (120v~) 2 l power supply line ht (120v~) 3 cp1 central heating pump ht (120v~) 4 it ignitor ht (120v~) 5 heat/cp2 ch pump ht (120v~) 6 gv gas valve ht (...

  • Page 55

    Mascot ft, heating only, boiler page 53 4.21 electrical connections connector description ht selv #, location, type pin label cn7 lwd1140-14 1 f.S flame detect sensor selv (5v) 8 2 op.S operating water temperature sensor selv (5v) 9 3 dh.S exhaust temperature sensor selv (5v) 10 4 i.S ch return temp...

  • Page 56

    Laars heating systems page 54 section5.Control display and operation 5.1 control dial and buttons • 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. Buttons functionali...

  • Page 57

    Mascot ft, heating only, boiler page 55 5.2 lcd overview the lcd will illuminate when a user action is detected (a button is pressed) and will turn back off after 20 seconds. Symbol name description service reminder mode service reminder mode indication outside temperature mode outside temp setting ...

  • Page 58

    Laars heating systems page 56 5.3operatingmode 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. It will then disp...

  • Page 59

    Mascot ft, heating only, boiler page 57 5.4settingtheclock the p-950eh control display does not have a daily timer or programmable thermostat. Setting the clock a. Press and hold the ‘clock button’ for about 5 seconds. Set the ‘year’ by turning the dial e . And then, press the dial e to save. B. Set...

  • Page 60

    Laars heating systems page 58 5.5chsetpointchangemode ch set point change mode indicate indicator current ch temperature set-point celsius or fahrenheit or if communication state is activated if flame is detected date and time indicator if ch pump is operating if there currently a demand for central...

  • Page 61

    Mascot ft, heating only, boiler page 59 5.6statusdisplaymode status display mode digital display status display parameter description o: ot outdoor temperature current outdoor sensor temperature a: in 0-10 v display current voltage of (0-10v input) b: tt ch target temperature in cascade system curre...

  • Page 62

    Laars heating systems page 60 5.7installermode installer mode. These changes are to be made only by a qualified technician. Index numbers parameter description 1: eh error history up to 10 check last 10 error codes (e0 - e9) 2: ce delete error history select “on” to delete error code history range: ...

  • Page 63

    Mascot ft, heating only, boiler page 61 5.7installermode(continued) index numbers parameter description 7: cl minimum supply temperature sets the design supply water temperature based on the maximum outdoor design temperature. Minimum supply temperature must be set at least 9°f below the maximum sup...

  • Page 64

    Laars heating systems page 62 5.7installermode(continued) 30:cr auto automatic rotation the first unit to operate when there is a t/t call is the unit that ran the least amount of time during the prior heat calls. Cr:ct cascade rotation time cascade rotation time range: 0-240 hours, default 48 hours...

  • Page 65

    Mascot ft, heating only, boiler page 63 5.8storagemode storage mode / indirect water heater indicate indicator current ch set-point of temperature celsius or fahrenheit or if flame detected storage mode indication if there is a demand for central heat (ch) tochangestoragemodetemp, first turn off the...

  • Page 66

    Laars heating systems page 64 5.9outdoorresetadjustment 5.10externalsetpointtemperaturecontrol 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 4:oh “high outdoor tempe...

  • Page 67

    Mascot ft, heating only, boiler page 65 5.11errormode flashing note: when communication between the control display and the main controller is lost, the will not be displayed. Error mode the control display will show the following information when an error is presented. Indicate indicator error ‘ er...

  • Page 68

    Laars heating systems page 66 section6.Error codes error code error code description possible remedies recover methods 10 flame has extinguished 8 (eight) times press the power button to clear the error code. If error happens again: 1. Monitor the gas pressure to the appliance while in operation. En...

  • Page 69

    Mascot ft, heating only, boiler page 67 error code error code description possible remedies recover methods 35 venting (exhaust) sensor open or short this error code will go away when exhaust temperature decreases. If error happens again: 1. Check venting (exhaust) temperature sensor. Ensure connect...

  • Page 70

    Laars heating systems page 68 error code error code description possible remedies recover methods 70 register, ram, rom, i/o port, ad abnormal, important eprom data or safe data abnormal this error code will go away when the condition is remedied. If error happens again: 1. Turn power off and on at ...

  • Page 71

    Mascot ft, heating only, boiler page 69 6.2faulttreeanalysis 1. Flame detection.

  • Page 72

    Laars heating systems page 70 6.2faulttreeanalysis 2. Gas detection 3. ‘storage’, ‘dhw’, ‘op’, ‘ch overheat’, ‘exhaust heat’ sensor detects error code contents e28 dhw ntc open or short e33 op ntc open or short e35 exhaust ntc open or short.

  • Page 73

    Mascot ft, heating only, boiler page 71 question answer burner dose not ignite when the hot water is opened. Make sure that the on/off button on the control display has been turned on. If the monitor on the control display is blank, make sure the power cord is plugged and 4a fuses on the main contro...

  • Page 74

    Laars heating systems page 72 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. Display condition diagnostic corrective action(s) nothing shown on display control displa...

  • Page 75

    Mascot ft, heating only, boiler page 73 fault condition diagnostic corrective action(s) temperature sensor occurs when a temperature sensor has electrically shorted (short) or has become disconnected (open). Reset using manual reset screen on control display. (power button) check all the temperature...

  • Page 76

    Laars heating systems page 74 8.1 annual startup & general maintenance regular maintenance - this manual should be placed in a safe and dry location near the boiler. Maintenance instructions should be carried out by the following guidelines. Maintenance procedures [ daily ] - check that the boiler c...

  • Page 77

    Mascot ft, heating only, boiler page 75 8.1 annual startup & general maintenance - check the air vent if the air vent valve seems to work freely without leaking, replace cap “a” by twisting all the way on. Loosen cap “a” one turn to allow vent to operate. If vent does not operate correctly, replace ...

  • Page 78

    Laars heating systems page 76 8.2 flushing the boiler - flushing the boiler flushing the heat exchanger of boiler is a complicated procedure. Refer to the following instructions carefully before attempting the procedure. If you do not understand about the procedure, contact an authorized techni- cia...

  • Page 79

    Mascot ft, heating only, boiler page 77 9.1 quick view before installing - make sure that there is enough space for installing water and gas line. Verify vent/air termination is located as required. - all models need for propane conversion which requires a separate gas conversion manual. Install wat...

  • Page 80

    Laars heating systems page 78 9.2 final check lists (continued) final check : connecting the power supply • please check that the power is 120v ac. • have you checked the polarity of the electrical connection? Final check : pressure relief valve • have you installed an approved pressure relief valve...

  • Page 81

    Mascot ft, heating only, boiler page 79.

  • Page 82

    Laars heating systems page 80 no description part number 2 o-ring p7 ft1601 b-4 bolt(m4*8 th) ft1614 b-6 bolt(m4*10 fh) ft1544 b-7 bolt(m4* 10 th) ft1719 b-9 bolt(m4*10 flat) ft1545 b-11 bolt(m4*12 th) ft1534 b-14 bolt(m4*20 th) ft1546 b-15 bolt(m4*16 th) ft1547 7 exhaust vent duct ass’y ft1002 7-1 ...

  • Page 83

    Mascot ft, heating only, boiler page 81.

  • Page 84

    Laars heating systems page 82 heat exchanger parts (80 mbh to 140 mbh) no description part number 2 o-ring p7 ft1601 3 o-ring p22 ft1514 4 0.3” packing ft1060 5 3/4” packing ft1646 6 1” packing ft1691 n-1 m4 nut ft1061 b-1 m3*6 ph ft1062 b-3 m4*8 ph ft1063 b-5 m4*8 th ft1520 b-7 m4*10 th ft1719 b-8 ...

  • Page 85

    Mascot ft, heating only, boiler page 83.

  • Page 86

    Laars heating systems page 84 no description part number n-2 m5 nut ft1074 b-2 m3*12 ph ft1075 b-5 m4*8 th ft1520 b-6 m4*10 fh ft1544 b-8 m4*10 th ft1064 b-10 m4*12 ph ft1076 b-16 m5*14 ft1077 50 stainless band (Φ60) ft1078 51 intake hose ft1533 52 intake silicon adaptor ft1713 53 fan guide ft1079 5...

  • Page 87

    Mascot ft, heating only, boiler page 85.

  • Page 88

    Laars heating systems page 86 casing parts (199 mbh) no description part number 2 o-ring p7 ft1601 b-4 m4*8 th+ tapping ft1614 b-6 m4*10 fh+ m/s ft1544 b-7 m4*10 th+ tapping ft1719 b-9 m4*10 fh ft1545 b-11 m4*12 th+ m/s ft1534 b-15 m4*16 th+ tapping ft1547 7 exhaust vent duct ass'y ft1002 7-1 stainl...

  • Page 89

    Mascot ft, heating only, boiler page 87.

  • Page 90

    Laars heating systems page 88 heat exchanger parts (199 mbh) no description part number 2 o-ring p7 ft1601 3 o-ring p22 ft1644 4 0.3" packing ft1060 5 3/4" packing ft1646 6 1” packing ft1691 b-1 m3*6 ph+ m/s ft1062 b-3 m4*8 ph+ tapping ft1063 b-4 m4*8 th+ tapping ft1614 b-5 m4*8 th+ m/s ft1520 b-7 m...

  • Page 91

    Mascot ft, heating only, boiler page 89.

  • Page 92

    Laars heating systems page 90 blower parts (199 mbh) no description part number n-2 m5 nut ft1074 b-2 m3*12 ph+ tapping ft1075 b-5 m4*8 th+ m/s ft1520 b-10 m4*12 ph+ m/s ft1076 47 fan guide ft1769 48 damper packing ft1770 49 damper body ft1081 50 fan rubber packing ft1082 51 fan guide packing ft1772...

  • Page 93

    Mascot ft, heating only, boiler page 91.

  • Page 94

    Laars heating systems page 92 this page intentionally left blank.

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    Mascot ft, heating only, boiler page 93 this page intentionally left blank.

  • Page 96

    Laars heating systems customer service and product support: 800.900.9276•fax800.559.1583 headquarters: 20industrialway,rochester,nh,usa03867•603.335.6300•fax603.335.3355 1869 sismet road, mississauga, ontario, canada l4w 1w8 • 905.238.0100 • fax 905.366.0130 www.Laars.Com litho in u.S.A. © laars hea...