Check the type of gas and the gas inlet pressure before connecting the EVERHOT water heater to the gas supply. If the gas supply type does not match the type shown on the water heater rating plate, then DO NOT connect the water heater. Contact your Bradford White supplier for the correct water heater.
GAS METER SIZE –NATURALGAS ONLY
Be sure that the gas meter has sufficient capacity to supply the full rated gas input of the water heater as well as the requirements of all other gas fired equipment supplied by the meter. If the gas meter is too small, ask the gas company to install a larger meter having adequate capacity.
GAS PRESSURE REGULATION
Minimum and maximum gas supply pressures are listed below: The minimum gas pressure specified below is required for the full input rating specified on the water heater rating plate.
Natural Gas: Minimum: 6.0” w.c. | L.P. Gas: | Minimum: 10.0” w.c. |
Maximum: 10.5” w.c. |
| Maximum: 13.5” w.c. |
BEFORE PLACING THE WATER HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. USE SOAP AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THE PURPOSE OF LOCATING GAS LEAKS.
WARNING
DO NOT use matches, candles, flame or other sources of ignition for this purpose.
Capacity Table for Natural Gas in Cubic Feet/Hour
(Table assumes 0.3 inch pressure drop, specific gravity of 0.60 for gas pressures of 0.5 psi or less)
Pipe |
|
|
|
| Length of Pipe in Feet (Meters) |
|
|
|
|
| |||||
Size in | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| 100 | 125 | 150 | 175 | 200 |
Inches | (3) | (6) | (9) | (12) | (15) | (18) | (21) | (24) | (27) |
| (30) | (38) | (45) | (53) | (61) |
¾” | 278 | 190 | 152 | 130 | 115 | 105 | 96 | 90 | 84 |
| 79 | 72 | 64 | 59 | 55 |
1” | 520 | 350 | 285 | 245 | 215 | 195 | 180 | 170 | 160 |
| 150 | 130 | 120 | 110 | 100 |
1 ¼” | 1050 | 730 | 590 | 500 | 440 | 400 | 370 | 350 | 320 |
| 305 | 275 | 250 | 225 | 210 |
1 ½” | 1600 | 1100 | 890 | 760 | 670 | 610 | 560 | 530 | 490 |
| 460 | 410 | 380 | 350 | 320 |
Note: After determining the length of pipe required, select the pipe size that will supply the cubic feet per hour of gas required for the input rating of the gas appliances on the line.
The formula for figuring the cubic feet per hour required is:
CFH = Gas Input of Appliance on the Line (Btu/hr)
Heating Value of Gas (Btu/Cu. Ft.)
The heating value may be obtained from the local natural gas utility
Capacity Table for LP Gas in MBH of undiluted liquefied petroleum gases
(Table assumes 11 inches of water column pressure at the inlet, 0.5” press. drop)
Pipe |
|
|
| Length of Pipe in Feet (Meters) |
|
|
|
| ||||
Size in | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 125 | 150 |
Inches | (3) | (6) | (9) | (12) | (15) | (18) | (21) | (24) | (27) | (30) | (38) | (45) |
½” | 275 | 189 | 152 | 129 |
|
|
|
|
|
|
|
|
¾” | 567 | 393 | 315 | 267 | 237 | 217 | 196 | 185 | 173 | 162 | 146 |
|
1” | 1071 | 732 | 590 | 504 | 448 | 409 | 378 | 346 | 322 | 307 | 275 | 252 |
1 1/4” | 2205 | 1496 | 1212 | 1039 | 913 | 834 | 771 | 724 | 677 | 630 | 567 | 511 |
INITIAL OPERATION AND TESTING (INSTALLER ONLY)
1.Open the gas and water supply valves to the water heater.
2.Check for water and gas leaks. Use soap solution to check for gas leaks.
3.To check inlet supply pressure, remove the 1/8” NPT plug on the gas inlet supply fitting just below the bottom casing and install a barb fitting for attaching a hose to a manometer. For checking the gas manifold pressure, the plug is located just below the gas manifold connection inside the control panel.
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