34
FUeL OiL PiPiNg
Antifreeze added to boilers
must be nontoxic, and must be of a
type specifically intended for use in closed hydronic heating systems.
Under no circumstances should automotive antifreeze be used. An-
tifreeze used in any boiler may reduce capacity by 10% or more and
increase fuel consumption. Refer to
Table 6
&
Table 7
.
ANTiFreeZe iN THe SYSTeM
taBLE 6:
BOiLER WatER VOLUmES
Number of
Boiler Section
Total Volume
(Gallons)
4
3.6
5
4.3
6
5.1
7
5.9
taBLE 7: PiPiNG WatER VOLUmES
PiPE SiZE
cOPPER PiPE
FactOR
StEEL PiPE
FactOR
½”
82.5
63.5
¾”
40.0
36.0
1”
23.3
22.2
1 ¼”
15.3
12.8
1 ½”
10.8
9.5
2”
6.2
5.8
Divide total length of piping in feet by appropriate factor
in table to determine volume in gallons.
TABLE 5: TWO STAGE UNITS, TWO PIPE SYSTEMS
(SEE FiGURE #15)
LiFt “H”
Maximum Length of Tubing “R”
3/8” O.D.
Tubing (3 GPH)
1/2” O.D.
Tubing (3 GPH)
0
93 FT.
100 FT.
2
85 FT.
100 FT.
4
77 FT.
100 FT.
6
69 FT.
100 FT.
8
60 FT.
100 FT.
10
52 FT.
100 FT.
12
44 FT.
100 FT.
14
36 FT.
100 FT.
16
27 FT.
100 FT.
18
---
76 FT.
