Reznor LDAP Unit Installation Manual Manual de usuario descargar pdf (Pagina 11)

Form I-LDAP, P/N 207733R6, Page 11

All piping must be in accordance with requirements outlined in the National

Fuel Gas Code ANSI/Z223.1a (latest edition) or CSA-B149.1 and B149.2 (See

Paragraph 1.4). Gas supply piping installation should conform with good prac-

tice and with local codes. Support gas piping with pipe hangers, metal strap-

ping, or other suitable material; do not rely on the heater to support the gas

pipe.

The heater is oriced for operation with natural gas having a heating value of

1000 (± 50) BTU per cubic ft or propane gas with a heating value of 2500 (±

100) BTU per cubic ft. If the gas at the installation does not meet these speci-

cations, consult the factory for proper oricing.

Gas Connection Size

Pipe joint compounds (pipe dope) shall be resistant to the action of liqueed

petroleum gas or any other chemical constituents of the gas being supplied.

Install a ground joint union and manual shutoff valve upstream of the heater

control system, as shown in FIGURE 6. Installation of a trap with a minimum 3”

(76mm) drip leg is required.

To connect the gas, the heater is equipped with a nipple that extends outside

the cabinet.

Leak-test all connections by brushing on a leak-detecting solution.

Gas Connection - inches/mm

Size

Natural

Gas

Propane

400

inches

1 1

25.4 25.4

800

inches

1-1/4 1-1/4

31.8 31.8

1200

inches

1-1/4 1-1/4

31.8 31.8

Sizing Gas Supply

Line

Capacity of Piping - Cubic Feet per Hour based on 0.3” w.c. Pressure Drop

Specic Gravity for Natural Gas -- 0.6 (Natural Gas -- 1000 BTU/Cubic Ft)

Specic Gravity for Propane Gas -- 1.6 (Propane Gas -- 2550 BTU/Cubic Ft)

Length

Diameter of Pipe

of 1” 1-1/4” 1-1/2” 2” 2-1/2”

Pipe

Natural Propane Natural Propane Natural Propane Natural Propane Natural Propane

20’ 350 214 730 445 1100 671 2100 1281 3300 2013

30’ 285 174 590 360 890 543 1650 1007 2700 1647

40’ 245 149 500 305 760 464 1450 885 2300 1403

50’ 215 131 440 268 670 409 1270 775 2000 1220

60’ 195 119 400 244 610 372 1105 674 1850 1129

70’ 180 110 370 226 560 342 1050 641 1700 1037

80’ 170 104 350 214 530 323 990 604

1600

976

90’ 160 98 320 195 490 299 930 567 1500 915

100’ 150 92 305 186 460 281 870 531 1400 854

125’ 130 79 275 168 410 250 780 476 1250 763

150’ 120 73 250 153 380 232 710 433 1130 689

175’ 110 67 225 137 350 214 650 397 1050 641

200’ 100 61 210 128 320 195 610 372 980 598

Note: When sizing supply lines, consider possibilities of future expansion and increased requirements.

Refer to National Fuel Gas Code for additional information on line sizing.

WARNING: PRESSURE TESTING SUPPLY PIPING

Test Pressures Above 1/2 PSI: Disconnect the heater and manual

valve from the gas supply line which is to be tested. Cap or plug the

supply line.

Test Pressures Below 1/2 PSI: Before testing, close the manual valve

on the heater.

WARNING: All components of a gas supply system must be leak tested prior to

placing equipment in service. NEVER TEST FOR LEAKS WITH AN OPEN FLAME.

Failure to comply could result in personal injury, property damage or death.

NOTE: Gas

Conversion Kits are

available for changing

from propane to natural

gas or natural gas to

propane. A factory-

authorized conversion

kit MUST be used.

WARNING: The operating valve is the prime safety shutoff. All gas supply lines must

be free of dirt or scale before connecting the heater to ensure positive closure. See

Hazard Levels, page 2.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 43 44

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