1 neotherm boiler flow and head requirements, 2 neotherm water heater flow and head requirements, Neotherm boilers and water heaters – LAARS NeoTherm NTV600 - Install and Operating Manual User Manual
Page 21
NeoTherm Boilers and Water Heaters
Page 19
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.
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.
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.
NEOTHERM
NATURAL GAS
REQUIRED
CU FT
SIZE
/ HR.
80
80
105
105
150
150
199/210 199/210
285
285
399
399
500
500
600
600
750
750
850
850
Table 6A.
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.
SECTION 5.
Pump Requirements
5.1 NeoTherm Boiler Flow and Head
Requirements
(see Table 7)
NORMAL WATER*
Flow
H/L
Temp
Flow
H/L
Temp
Size
gpm
feet
Rise °F
lpm
m
Rise °C
150
19
57
15
72
17.4
8
199
25
28
15
95
8.5
8
285
36
33
15
98
10.1
8
399
50
35
15
189
10.7
8
500
63
28
15
239
8.5
8
600**
60
24
19
227
7.3
11
750**
68
35
21
257
10.7
12
850**
68
26
24
257
7.9
13
*Maximum water hardness of 10 grains per gallon allowed.
**
See section 6B.6 on page 30
for pump information.
Table 8. NeoTherm Water Heater Flow Data.
5.2 NeoTherm Water Heater Flow and Head
Requirements
(see Table 8)
TEMPERATURE RISE IN °F
20°F
25°F
30°F
35°F
40°F
FLOW H/L
FLOW H/L
FLOW H/L
FLOW H/L
FLOW H/L
SIZE
GPM
FT
GPM
FT
GPM
FT
GPM
FT
GPM
FT
80
7.6 14.9
6.1 10.1
5.1
7.1
4.3
5.8
3.8
4.6
105
10
23.1
8
17
6.7 12.4
5.7
9.6
5
7.6
150 14.3 28.5
11.4 19
9.5 13.6
8.1 11.2
7.1
8.8
210
20
24.1
16 16.7
13.4 11.6 11.3
9
9.9
6.9
285
27
25.5
22 17.5
18
14
15 10.5
13
8
399
39
28
31
20
25 14.5
22
11
19
9
500
48
24
38
16
32
12
27
9
24
8
600
58
44
46
31
38
22
33
18
29
15
750
72
37
58
23
48
17
41
13
36
10
850
81
33
65
22
54
15
46
10
41
8
TEMPERATURE RISE IN °C
11°C
14°C
17°C
19°C
22°C
FLOW H/L
FLOW H/L
FLOW H/L
FLOW H/L
FLOW H/L
SIZE
lpm
m
lpm
m
lpm
m
lpm
m
lpm
m
80
29
4.5
23
3.1
19
2.2
16
1.8
14
1.4
105
38
7.0
30
5.2
25
3.8
22
2.9
19
2.3
150
54
8.7
43
5.8
36
4.1
31
3.4
27
2.7
210
76
7.3
61
5.1
51
3.5
43
2.7
37
2.1
285
102
7.8
83
5.3
68
4.3
57
3.2
49
2.4
399
148
8.5
117 6.1
95
4.4
83
3.4
72
2.7
500
182
7.3
144 4.9
121 3.7
102 2.7
91
2.4
600
220 13.4
174 9.4
144 6.7
125 5.5
110 4.6
750
273 11.3
220 7.0
182 5.2
155 4.0
136 3.0
850
307 10.1
246 6.7
204 4.6
174 3.0
155 2.4
Table 7. Water Flow Requirements.