LAARS Heating Systems
Page 16
SCHeD 40 metal PIPe CaPaCIty for 1.50 SPeCIfIC
GraVIty UnDIlUteD ProPane
NOMINAL PIPE SIZE @ 11” W.C. INLET AND 0.5” W.C.
PRESSURE DROP
SIZE 1/2” 3/4” 1” 1-1/4” 1-1/2” 2”
LENGTH MAXIMUM CAPACITY IN THOUSANDS OF BTU PER
HOUR
20 200 418 787 1616 2422 4664
40 137 287 541 1111 1664 3205
60
110 231 434
892
1337 2574
80
94
197 372
763
1144 2203
100
84
175
330
677
1014 1952
Notes:
1. Follow all local and national LP gas codes for line sizing and
equipment requirements.
2. Verify that inlet gas pressure remains between 4 and 13 inches
of water column before and during operation.
Source: ANSI Z223.1-80 National Fuel Gas code.
table 6D - Pipe Capacity for Propane
eQUIValent lenGtHS of StraIGHt PIPe for tyPICal
SCH 40 fIttInGS
NOMINAL PIPE SIZE
FITTING 1/2”
3/4”
1”
1-1/4”
1-1/2” 2”
LINEAR FEET
90° ELBOW 3.6
4.4
5.2
6.6
7.4
8.5
TEE 4.2 5.3 6.6
8.7
9.9 12
table 6B - equivalent Pipe lengths
neotHerm
natUral GaS
reQUIreD
CU FT
SIZE
/ HR.
1000 1000
to SIze PIPInG:
Measure linear distance from meter outlet to
last boiler. Add total input of all boilers and
divide by 1000 to obtain cu ft / hr required.
Add total equivalent length of fittings used
according to Table 6B. Align total length (pipe
and fittings) on left side column of Table 6C
with highest cubic feet of gas required.
notes:
Consult and confirm with Applicable Fuel
Gas Code before beginning work.
Verify gas inlet pressure is between 4 and 13
in W.C. before starting boiler.
table 6a - natural Gas requirements
SCH 40 metal PIPe CaPaCIty for 0.60 SPeCIfIC GraVIty
natUral GaS
NOMINAL PIPE SIZE @ 0.30” W.C. PRESSURE DROP
LENGTH 1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
FT
CUBIC FEET OF GAS PER HOUR
20
92 190
350
730
1100
2100
40
130 245
500
760
1450
60
105 195
400
610
1150
80
90
170
350
530
990
100
150
305
460
870
table 6C - Pipe Capacity for natural Gas
Summary of Contents for NTV1000
Page 2: ......
Page 35: ...NeoTherm Boilers and Water Heaters Page 31 Fig 20 Ladder Diagram...
Page 36: ...LAARS Heating Systems Page 32 Fig 21 Wiring Diagram...
Page 37: ...NeoTherm Boilers and Water Heaters Page 33...
Page 51: ...NeoTherm Boilers and Water Heaters Page 47 Fig 52 Connection Terminals...
Page 130: ...LAARS Heating Systems Page 126 Fig 140 Machine Frame and Rear Panel 13 3 PARTS ILLUSTRATIONS...
Page 131: ...NeoTherm Boilers and Water Heaters Page 127 Fig 141 Front Panel and Covers...
Page 132: ...LAARS Heating Systems Page 128 Fig 142 Burners and Combustion Chambers...
Page 134: ...LAARS Heating Systems Page 130 Fig 145 Electronic Components...
Page 135: ...NeoTherm Boilers and Water Heaters Page 131 Fig 146 Condensate Trap Fig 147 Control Bezel...
Page 136: ...LAARS Heating Systems Page 132 Fig 148 Flow Switch...
Page 137: ...NeoTherm Boilers and Water Heaters Page 133 This page intentionally left blank...
