Lennox International Inc G24-200 installation instructions Fire Or Explosion Hazard

Page 26
FIRE OR EXPLOSION HAZARD

TABLE 9

GAS PIPE CAPACITY − FT3/HR (KL/HR)

Nominal

Iron Pipe Size

Inches(mm)

Internal

Diameter

Inches(mm)

Length of Pipe - Feet (m)

10

20

30

40

50

60

70

80

90

100

(3.048)

(6.096)

(9.144)

(12.192)

(15.240)

(18.288)

(21.336)

(24.384)

(27.432)

(30.480)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

.364

43

29

24

20

18

16

15

14

13

12

(6.35)

(9.246)

(1.13)

(.82)

(.68)

(.57)

(.51)

(.45)

(.42)

(.40)

(.37)

(.34)

 

 

 

 

 

 

 

 

 

 

 

 

3/8

.493

95

65

52

45

40

36

33

31

29

27

(9.53)

(12.522)

(2.69)

(1.84)

(1.47)

(1.27)

(1.13)

(1.02)

(.73)

(.88)

(.82)

(.76)

 

 

 

 

 

 

 

 

 

 

 

 

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)

(919.25)

(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 (m3 ) of gas per hour and based on 0.60 specific gravity gas.

Leak Check

The furnace must be isolated from the gas supply system

After gas piping is completed, carefully check all piping

by closing its individual manual shut-off valve during any

pressure testing of the gas supply system at pressures

connections (factory- and field-installed) for gas leaks. Use

equal to or less than 1/2 psig (3.48 kPa).

a leak detecting solution or other preferred means.

 

Manual backgroundWARNING

FIRE OR EXPLOSION HAZARD

Failure to follow the safety warnings exactly could result in serious injury, death or property damage.

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifi- cally for the detection of leaks to check all connec- tions. A fire or explosion may result causing proper- ty damage, personal injury or loss of life.

NOTE − In case emergency shutdown is required, shut off the main manual gas valve and disconnect the main power

to the furnace. These devices should be properly labeled

by the installer.

Manual backgroundIMPORTANT

When testing pressure of gas lines, gas valve must be disconnected and isolated. See figure 14. Gas valves can be damaged if subjected to more than 1/2 psig (3.48 kPa).

MANUAL MAIN

ISOLATE

GAS

SHUT−OFF VALVE

VALVES

WILL NOT HOLD

FURNACE

NORMAL TEST

 

PRESSURE

 

CAP

 

FIGURE 14

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Contents P504613M INSTALLATION INSTRUCTIONS G24-2002P0805 WHAT TO DO IF YOU SMELL GASG24−200 Unit Dimensions − inches mm PageBACK VIEW G24−200 Filter Box Dimensions − inches mmSIDE VIEW TOP VIEWPage G24−200 Parts ArrangementG24−200 HEAT SECTION AND CABINET Page G24−200 Parts Arrangement ContinuedG24−200 BLOWER SECTION Shipping and Packing List SafetyG24−200 Gas Furnace setting General Combustion, Dilution & Ventilation AirCements and glues EQUIPMENT IN CONFINED SPACE ALL AIR FROM INSIDE Setting Equipment Return Air Plenum / Filter Box InstallationBOTTOM RETURN AIR FILTER BOX INSTALLATION PageBlower Motor / Drive Installation Duct SystemVenting Venting Using a Masonry Chimney Page Page SERVING A SINGLE CATEGORY I APPLIANCE PageSERVING A SINGLE CATEGORY I APPLIANCE PageSERVING TWO OR MORE CATEGORY I APPLIANCES VENT CONNECTOR CAPACITYSERVING TWO OR MORE CATEGORY I APPLIANCES COMMON VENT CAPACITYPage CARBON MONOXIDE POISONING HAZARD Page FOR INSTALLATIONS IN THE USA AND CANADAVENT TERMINATION CLEARANCES Horizontal Venting Gas Piping FIRE OR EXPLOSION HAZARD Electrical box right side G24−200 FIELD WIRING DIAGRAM 120V SINGLE PH 60HZAlternate make-up Alternate make-upG24-200FIELD WIRING DIAGRAM J UNITS − 575V 3PH 60HZ G24−200 FIELD WIRING DIAGRAMG UNITS − 460V 3PH 60HZ Alternate make-upFIGURE Page Y UNITS − 208/230V 3PH 60HZ WIRING SCHEMATIC DIAGRAM FOR G24−200P UNITS − 208/230V 1PH 60 HZ G UNITS − 460V 3PH 60HZUnit Start−Up Heating Sequence of Operation High Altitude Information Gas Pressure AdjustmentOther Unit Adjustments and Operation Temperature Rise Setting blower CFM Page TABLE ACCESSORY AIR RESISTANCETABLE DRIVE KIT SPECIFICATIONS Repair Parts List G24−200 Start−up and Performance Check ListABNORMAL HEATING MODE TroubleshootingNORMAL HEATING MODE PageABNORMAL HEATING MODE 3 − OFF NO POWER OR DETECTED FAULTNORMAL HEATING MODE LED CODESPOWER ON THERMOSTAT CALLS FOR HEAT W1 ENERGIZED IS THE S10 S99 HIGH LIMIT CLOSED? YES FOR A SINGLE CONDENSING UNIT COOLING SEQUENCE OF OPERATIONFOR TWO CONDENSING UNITS MANUAL FAN OPERATION