Laars NEOTHERM NTH Series, Инструкция по установке и эксплуатации

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Page 20
LAARS Heating Systems
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 10.
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 11.
Unit
NATURAL GAS
REQUIRED
CU FT
SIZE / HR.
80 80
105 105
150 150
210 210
Table 9.
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 10. Align total length (pipe
and fittings) on left side column of Table 11
with highest cubic feet of gas required.
SECTION 5 PUMP REQUIREMENTS
5.A Boiler Flow and Head Requirements
Table 12. Water Flow Requirements
Notes:
Consult and confirm with Applicable Fuel
Gas Code before beginning work.
Verify gas inlet pressure is between
4”
W.C. (1.0kPa)
and
13” W.C. (3.2kPa)
,
before and during operation.
Residential
table 13
Boiler Flow and Head Requirements
boiler only
Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L
gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet gpm feet
80 10 26.8 7.6 16.9 6.1 11.7 5.1 8.65 4.3 6.5 3.8 5.28 3.4 4.3 3 3.6 2.8 3.1 2.5 2.7
105 13.3 38.8 10 23.3 8 15.6 6.7 11.3 5.7 8.48 5 6.7 4.4 5.4 4 4.5 3.6 3.8 3.3 3.2
150 19 39.4 14.3 24.1 11.4 16.3 9.5 11.9 8.1 9.03 7.1 7.19 6.3 5.9 5.7 4.9 5.2 4.2 4.8 3.6
210 26.7 28.1 20 15.6 16 9.88 13.4 6.88 11.3 4.86 9.9 3.71 8.9 3 8 2.4 7.3 2 6.7 1.6
Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L
lpm m lpm m lpm m lpm m lpm m lpm m lpm m lpm m lpm m lpm m
80 37.9 8.2 28.8 5.2 23.1 3.6 19.3 2.6 16.3 2.0 14.4 1.6 12.9 1.3 11.4 1.1 10.6 0.9 9.5 0.8
105 50.3 11.8 37.9 7.1 30.3 4.8 25.4 3.4 21.6 2.6 18.9 2.0 16.7 1.6 15.1 1.4 13.6 1.2 12.5 1.0
150 71.9 12.0 54.1 7.3 43.2 5.0 36.0 3.6 30.7 2.8 26.9 2.2 23.8 1.8 21.6 1.5 19.7 1.3 18.2 1.1
210 101.1 8.6 75.7 4.8 60.6 3.0 50.7 2.1 42.8 1.5 37.5 1.1 33.7 0.9 30.3 0.7 27.6 0.6 25.4 0.5
residential
Boiler only Boiler and Pump
Size 80 105 150 210 Size 80 105 150 210
Voltage 120V 120V 120V 120V Voltage 120V 120V 120V 120V
FLA
2.0 2.0 2.0 2.0
FLA
2.8 3.8 3.8 4.0
MCA
2.5 2.5 2.5 2.5
MCA
3.5 4.8 4.8 5.0
MOP
15 15 15 15
MOP
15 15 15 15
40 45 50 55 60 15 20 25 30 35
8 11 14 17 19 22 25 28 31 33