Takagi T-H3S-DV User Manual

26 Page
-Natural Gas Supply Piping-
MaximumdeliveryCapacityofCubicFeetofGasperHourofIPSPipecarryingNaturalGaswith0.60SpecificGravity.
BasedonPressureDropof0.5"W.C.
Based on Energy Content of 1,000 BTU/Cubic ft.: The water heater requires 160 Cubic ft./hr for the 240 (T-H3J)
model, 180 Cubic ft./hr for the 340 (T-H3S) model, and 199 Cubic ft./hr for the 540 (T-H3) model.
-Propane (LP) Supply Piping-
MaximumCapacityofPropane(LP)Basedon11"W.C.supplypressureata0.5"W.C.pressuredrop
Pipe Size
Length
Diameter
10' 20' 30' 40' 50' 60' 70' 80' 90' 100' 125' 150' 200'
1/2"
172 118 95 81 72 65 60 56 52 50 44 40 34
3/4"
360 247 199 170 151 137 126 117 110 104 92 83 71
1"
678 466 374 320 284 257 237 220 207 195 173 157 134
1
1/4"
1,390 957 768 657 583 528 486 452 424 400 355 322 275
1
1/2"
2,090 1,430 1,150 985 873 791 728 677 635 600 532 482 412
2"
4,020 2,760 2,220 1,900 1,680 1,520 1,400 1,300 1,220 1,160 1,020 928 794
Unit: Cubic feet per hour
Installaon
Installaon Manual
Water
heater
199,000BTU/h
Dryer
35,000BTU/h
Gas meter
Furnace
120,000BTU/h
Range
65,000BTU/h
A
B
C
10'Length
1/2"Pipesize
15'Length
1/2"Pipesize
15'Length
1"Pipesize
10'Length
3/4" Pipe size
10'Length
1"Pipesize
5'Length
1-1/4"Pipesize
10'Length
3/4" Pipe size
5'Length
1-1/4"Pipesize
Gas sizing example
(Natural Gas)
Unit: kBTU per hour
Pipe Size
Length
Diameter
10' 20' 30' 40' 50' 60' 70' 80' 90' 100' 125' 150' 200'
3/4"
567 393 315 267 237 217 196 185 173 162 146 132 112
1"
1,071 732 590 504 448 409 378 346 322 307 275 252 213
1
1/4"
2,205 1,496 1,212 1,039 913 834 771 724 677 630 567 511 440
1
1/2"
3,307 2,299 1,858 1,559 1,417 1,275 1,181 1,086 1,023 976 866 787 675
2"
6,221 4,331 3,465 2,992 2,646 2,394 2,205 2,047 1,921 1,811 1,606 1,496 1,260
BasedonEnergyContentof1,000BTU/Cubicft:
Divideeachappliance'sBTUrequirementby1,000BTU/htogettheappliancesCubicFt.requirement.
Take into account the distance the appliance is from the gas meter, look in the above gas chart to properly size the line.
For sections of the gas line supplying gas to more than one appliance (Ex: Point A to Point B), add up the cubic ft. requirements
of the appliances that are being supplied by that section, and size to the farthest appliance.
For Example: The section from A to B supplies gas to the furnace, range and dryer. Adding up the BTU requirements and dividing
by1,000yieldsacubicft.requirementof220cubicft.ofgas.Thefarthestapplianceistherange,whichis50ft.awayfromthe
meter.Lookingattheabovechart,andunderthecolumnof50ft.,SectionAtoBneedstobe1"inordertosupply220cubicft.

Takagi T-H3S-DV Specifications

General

Brand	Takagi
Model	T-H3S-DV
Category	Water Heater
Language	English