Lennox International Inc MERIT SERIES GAS FURNACE DOWNFLOW AIR DISCHARGE, ML193DF

Page 31

 

Left Side Piping

 

 

MANUAL

 

(Standard)

 

AUTOMATIC

 

 

MAIN SHUT−OFF

 

 

GAS VALVE

 

 

 

MANUAL

 

 

VALVE

AUTOMATIC

 

(with manual

MAIN SHUT−OFF

Plug

(With 1/8 in. NPT

GAS VALVE

shut−off valve)

VALVE

(with manual

Plug

 

Plugged Tap

(With 1/8 in. NPT

 

Shown)

shut−off valve)

 

Plugged Tap Shown)

 

 

GROUND

 

 

 

 

 

 

 

JOINT

 

 

 

 

UNION

GROUND

 

 

 

 

JOINT

 

 

 

 

UNION

 

 

 

DRIP LEG

 

 

 

 

 

 

FIELD

Right Side Piping

 

 

(Alternate)

 

 

PROVIDED

Bellows Grommet

DRIP LEG

AND INSTALLED

 

 

 

Bellows Grommet

 

 

NOTE − BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET

FIGURE 47

TABLE 10

GAS PIPE CAPACITY − FT3/HR (kL/HR)

Nominal

Internal

 

 

 

 

Length of Pipe−Feet(m)

 

 

 

 

Iron Pipe Size

Diameter

10

20

30

40

 

50

60

 

70

80

90

100

−Inches(mm)

−Inches(mm)

(3.048)

(6.096)

(9.144)

(12.192)

 

(15.240)

(18.288)

 

(21.336)

(24.384)

(27.432)

(30.480)

1/2

.622

175

120

97

82

 

73

66

 

61

57

53

50

(12.7)

(17.799)

(4.96)

(3.40)

(2.75)

(2.32)

 

(2.07)

(1.87)

 

(1.73)

(1.61)

(1.50)

(1.42)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/4

.824

360

250

200

170

 

151

138

 

125

118

110

103

(19.05)

(20.930)

(10.19)

(7.08)

(5.66)

(4.81)

 

(4.28)

(3.91)

 

(3.54)

(3.34)

(3.11)

(2.92)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1.049

680

465

375

320

 

285

260

 

240

220

205

195

(25.4)

(26.645)

(19.25)

(13.17)

(10.62)

(9.06)

 

(8.07)

(7.36)

 

(6.80)

(6.23)

(5.80)

(5.52)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1−1/4

1.380

1400

950

770

660

 

580

530

 

490

460

430

400

(31.75)

(35.052)

(39.64)

(26.90)

(21.80)

(18.69)

 

(16.42)

(15.01)

 

(13.87)

(13.03)

(12.18)

(11.33)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1−1/2

1.610

2100

460

1180

990

 

900

810

 

750

690

650

620

(38.1)

(40.894)

(59.46)

(41.34)

(33.41)

(28.03)

 

(25.48)

(22.94)

 

(21.24)

(19.54)

(18.41)

(17.56)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

2.067

3950

2750

2200

1900

 

1680

1520

 

1400

1300

1220

1150

(50.8)

(52.502)

(111.85)

(77.87)

(62.30)

(53.80)

 

(47.57)

(43.04)

 

(39.64)

(36.81)

(34.55)

(32.56)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2−1/2

2.469

6300

4350

3520

3000

 

2650

2400

 

2250

2050

1950

1850

(63.5)

(67.713)

(178.39)

(123.17)

(99.67)

(84.95)

 

(75.04)

(67.96)

 

(63.71)

(58.05)

(55.22)

(52.38)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

3.068

11000

7700

6250

5300

 

4750

4300

 

3900

3700

3450

3250

(76.2)

(77.927)

(311.48)

(218.03)

(176.98)

(150.07)

 

(134.50)

(121.76)

 

(110.43)

(104.77)

(97.69)

(92.03)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

4.026

23000

15800

12800

10900

 

9700

8800

 

8100

7500

7200

6700

(101.6)

(102.260)

(651.27)

(447.39)

(362.44)

(308.64)

 

(274.67)

(249.18)

 

(229.36)

(212.37)

(203.88)

(189.72)

NOTE − Capacity given in cubic feet of gas per hour (kilo liters of gas per hour) and based on 0.60 specific gravity gas.

Page 31

Image 31
Contents Table of Contents Installation Instructions ML193DFML193DF ML193DF Unit Dimensions − inches mmBlower Motor BAG AssemblyML193DF Parts Arrangement Control BOXShipping and Packing List Safety InformationDirect Vent Installation NON−DIRECT Vent ML193DF Gas FurnaceUse of Furnace as Construction Heater Combustion, Dilution & Ventilation Air GeneralEquipment in Confined Space − ALL AIR from Inside Equipment in Confined Space − ALL AIR from Outside Shipping Bolt RemovalSetting Equipment Installation − Setting EquipmentFront Horizontal Back NC‡ NON−COMBUSTIBLE Floor Opening SizeSide View Combustible Flooring Base Opening Size− Seal the cabinet and check for air leaks Duct System Pipe & Fittings SpecificationsPiping and Fittings Specifications FiltersOutdoor Termination Kits Usage Schedule Joint Cementing ProcedureVenting Practices Piping Suspension GuidelinesMinimum Vent Pipe Lengths Vent Piping GuidelinesML193DF MIN. Vent Length Model Maximum Allowable Intake or Exhaust Vent Length in Feet Typical Intake Pipe Connections Typical Exhaust Pipe ConnectionsIntake Exhaust Typical AIR Intake Pipe Connections Inches 305mm or 12 in mm Inside Corner DetailUS Installations1 Canadian Installations2 Direct Vent Roof Termination KIT − On field supplied terminations, a minimum distanceFLUSH−MOUNT Side Wall Termination KIT 51W11 51mm 76mm Vent Pipe Support Reducer MAY beRequired to Adapt Unconditioned SpaceTop View Front ViewExhaust NON−DIRECT Vent Roof Termination KIT 203mm − 305mmML193DF NON−DIRECT Vent Application Using Existing Chimney To drain ML193DF with Evaporator CoilTrap / Drain Assembly Using 1/2 PVC or 3/4 PVC Furnace Isolate GAS Valve Gas PipingGAS Pipe Capacity − FT3/HR kL/HR Electrical Precautions and ProceduresElectrostatic Discharge ESD BOX Inside FACTORY− Installed Left Side MAKE−UPInterior MAKE−UP BOX Exterior MAKE−UP BOXThermostat Designations Typical ML193DF Field Wiring DiagramTypical ML193DF Wiring Diagram Automatic Hot Surface Ignition System For Your Safety Read Before OperatingUnit Start−Up Integrated ControlPage High Altitude Information Gas Pressure AdjustmentGAS Meter Clocking Chart Proper Combustion2286m 3048m 2286 − 3038m73W37 73W81 68W68 74W90 74W91 69W73 Heat FAN-OFF Time in Seconds Other Unit AdjustmentsNo Jumper High Low In. w.g Cfm Watts Cfm Watts cfm Watts Blower DataElectrical SHOCK, Fire Or Explosion Hazard ServicePage LED #1 Red LED #2 Green Planned ServiceIgnition Control Board Diagnostic Codes Diagnostic CodesNormal Heating Mode Abnormal Heating Mode Troubleshooting Heating Sequence of OperationHeating Sequence of Operation Heating Sequence Normal Cooling Mode Abnormal Cooling Mode Troubleshooting Cooling Sequence of OperationCooling Sequence of Operation Continuous Heat Speed FAN Sequence of Operation Troubleshooting Continuous Fan Sequence of OperationRepair Parts List Intake / Exhaust Pipe Start−Up & Performance Check ListGAS Supply Return AIR Duct System Supply AIR DuctVent Pipe Temperature RiseTotal External Static Drain Line Condensate Line ThermostatLY BELOW. Keep Clear of ALL OBSTRUC- Tions Requirements for Commonwealth of Massachusetts