TURBOPOWER 99 WATER HEATER
MULTIPLE UNIT INSTALLATIONS GAS PIPING SIZE CHART
Maximum Capacity of Pipe in Thousands of BTU’s per hour for gas pressures of 14 Inches Water Column (0.5 PSIG) or less and a
pressure drop of 0.05 Inch Water Column (Based on NAT GAS, 1025BTU’s per Cubic Foot of Gas and 0.60 Specific Gravity).
Nominal Iron |
|
|
|
|
| Length of Pipe in Straight Feet |
|
|
|
|
| ||||||
Pipe Size, | 10 | 20 | 30 | 40 | 50 |
| 60 | 70 | 80 | 90 |
| 100 | 125 | 150 | 175 | 200 | |
Inches |
|
| |||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
3/4 | 369 | 256 | 205 | 174 | 155 |
| 141 | 128 | 121 | 113 |
| 106 | 95 | 86 | 79 | 74 | |
| 1 | 697 | 477 | 384 | 328 | 292 |
| 267 | 246 | 256 | 210 |
| 200 | 179 | 164 | 49 | 138 |
1 | 1/4 | 1400 | 974 | 789 | 677 | 595 |
| 543 | 502 | 472 | 441 |
| 410 | 369 | 333 | 308 | 287 |
1 | 1/2 | 2150 | 1500 | 1210 | 1020 | 923 |
| 830 | 769 | 707 | 666 |
| 636 | 564 | 513 | 472 | 441 |
| 2 | 4100 | 2820 | 2260 | 1950 | 1720 |
| 1560 | 1440 | 1330 | 1250 |
| 1180 | 1100 | 974 | 871 | 820 |
2 | 1/2 | 6460 | 4460 | 3610 | 3100 | 2720 |
| 2460 | 2310 | 2100 | 2000 |
| 1900 | 1700 | 1540 | 1400 | 1300 |
| 3 | 11200 | 7900 | 6400 | 5400 | 4870 |
| 4410 | 4000 | 3800 | 3540 |
| 3300 | 3000 | 2720 | 2500 | 2340 |
| 4 | 23500 | 16100 | 13100 | 11100 | 10000 |
| 9000 | 8300 | 7690 | 7380 |
| 6870 | 6150 | 5640 | 5130 | 4720 |
9.4Appliance Isolation during Gas Supply Piping Pressure Test
1.The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of ½ PSI (3.5 kPa).
2.The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ PSI (3.5 kPa).
3.The appliance and its gas connection must be
9.5Gas Connection
1.Safe operation of unit requires adequate gas supply with the required static and dynamic (flow) pressures. Actual piping selection depends on many variables that must be carefully considered by the gas piping system designer. Do not select gas pipe sizes based only on the supplied tables. These tables are for use by the gas piping system designer as a reference in checking pipe size selections.
2.Gas pipe size may be larger than heater connection.
3.Installation of a union is suggested for ease of service.
4.Install a manual main gas shutoff valve, outside of the appliance gas connection and before the appliance gas valve, when Local Codes require.
5.The gas system installer should clearly identify the emergency
6.A sediment trap (drip leg) MUST be provided in the inlet of the gas connection to the unit.
7.Vent limiters/are designed and must respond to pressure changes in the installation environment, as opposed to outdoor ventilation. For proper operation, do not connect the vent to outdoor atmosphere.
9.6Gas Train and Controls Certification
NOTE: The gas train and controls assembly provided on this unit have been tested under the applicable American National Standard to meet minimum safety and performance criteria such as safe lighting, combustion and safety shutdown operation.
9.7Gas Control Trains
All models include gas control trains with the following at least the following components (may be separate or combined in common housing): manual gas shutoff valve, two safety shutoff valves, regulator or proportionator, manifold pressure tap.
CAUTION: Do not adjust or remove any screws or bolts on gas train control components which are sealed with a red or blue colored compound. Doing so will void all approvals and warranties.
14 |