ECOHOT WHO_321064-LP, Installation Manual And Owner'S Manual

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Installation Manual and Owner’s Guide WHO-321064-NG, WHO-321064-LP
ECOHOT
TM
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Gas Piping, Connections and Gas Regulator
Before connecting the gas supply, check the rating plate on the right side of the right front cover to
be sure that the heater is rated for the same gas to which it will be connected.
In the Applianceed States: The installation must conform with local codes or, in the absence of local
codes, the National Fuel Gas Code ANSIZ223.1/NFPA54.
In Canada: The installation should confirm with CGAB149 INSTALLATION CODES and/or local
installation codes.
Gas Line Sizing:
The gas supply piping should be sized according to the Applicable Plumbing Code for a maximum
draw of 218,000 BTU. First determine the effective length of the gas supply line by measuring the
actual length of piping, and then adding 5 ft. for every elbow or “T” to the actual length. Use the
charts below to determine the pipe diameter necessary to accommodate the BTU demand of the
appliance. If there is more gas drawing appliances on the line, size according to the maximum
amount of BTU demand.
Maximum
Natural Gas Delivery Capacity in Cube Feet per Hour(0.60 Specific Gravity, 0.5”WC
Pressure Drop)
Pipe
Size
Length in Feet
10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’ 125’
½”
174 119 96 82 73 66 61 56 53 50 44
¾”
363 249 200 171 152 138 127 18 111 104 93
1”
684 470 377 323 286 259 239 222 208 197 174
1 ¼”
1404 965 775 663 588 532 490 456 428 404 358
1 ½”
2103 1445 1161 993 880 798 734 683 641 605 536
2”
4050 2784 2235 1913 1696 1536 1413 1315 1234 1165 1033
2 ½”
6455 4437 3563 3049 2703 2449 2253 2096 1966 1857 1646
3”
11412 7843 6299 5391 4778 4329 3983 3705 3476 3284 2910
*Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas.
The formula for figuring the cubic feet per hour required is:
Gas Input of Water Heater(BTU/HR)
CFH = --------------------------------------------------
Heating Value of Gas(BTU/Cubic FT)
Maximum Liquified Petroleum(Undiluted) delivery Capacity in Thousand of Btuh(0.5” WC
Pressure Drop)
Pipe
Size
Length in Feet
10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’ 125’ 150’ 200’
½”
275
189 152 129 114 103 96 89 83 78 69 63 55
¾”
576 693 315 267 237 217 196 185 173 162 146 132 112
1”
1107 732 590 504 448 409 378 346 322 307 275 252 213
1 ¼”
1220 1149 1121 1103 913 834 771 724 677 630 567 511 440
1 ½”
1330 1229 1185 1155 1141 1127 1118 1108 1102 976 866 787 675
2”
1622 1433 1346 1299 1264 1239 1220 1204 1192 1811 1606 1496 1260
**For reference only. Please consult gas pipe manufacture for actual capacities.
This chart is only for Black Iron piping and is only for ECOHOT Water Heater at high fire
condition.
High Altitude Operation
For high altitude installations in Canada above 2,000 Ft to 4,500 Ft, this water heater's Gas Supply