16
Antifreeze
must be nontoxic, type specifically intended
for use in closed hydronic heating systems. Under no
circumstances should automotive antifreeze be used.
Antifreeze used in any boiler may reduce capacity by
10% or more and increase fuel consumption. Tankless
coil performance will fall as concentration of antifreeze is
increased. Refer to boiler and piping water volumes tables
in this manual.
BOILER WATER VOLUMES
Number of
Boiler Section
Total Volume
(Gallons)
3
9.6
4
11.6
5
13.7
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.
Check your chimney to make certain that it is right size,
properly constructed and in good condition.
See Table “Recommended Minimum Chimney Sizes”.
For additional chimney design and sizing information,
consult latest revision of the ASHRAE HVAC Systems and
Applications Handbook, Gas Vent and Fireplace Systems; or
the National Standard for Chimneys, Fireplaces, Vents and
Solid Fuel Burning Appliances, ANSI/NFPA 211.
RECOMMENDED MINIMUM CHIMNEY SIZES
FIRING RATE
(gph)
CHIMNEY
HEIGHT (ft)
NOMINAL
CHIMNEY
ROUND
LINER INSIDE
SQUARE
LINER INSIDE
0.60 1.30
15
8” x 8”
6”
6 ¾” x 6 ¾”
1.35 1.80
15
8” x 8”
7”
6 ¾” x 6 ¾”
For elevations above 2,000 feet above sea level, add 3 feet to the chimney heights.
For oil fired boilers for connections to vents or chimneys,
vent installations shall be in accordance with applicable
provisions of NFPA-31 Standard for the installation of
Oil-Burning Equipment
(latest edition) and applicable
provisions of local building codes.
ANTIFREEZE IN THE SYSTEM
CHIMNEY AND CHIMNEY CONNECTIONS
NOTICE
Fresh air (ventilation) is important to proper
venting. Ventilation and venting are two parts of the
same system. Inadequate ventilation will result in
inadequate venting. Always be sure to have enough
ventilation to support proper venting.
Sidewall Venting With Listed Power Venter
—
This boiler is not approved for direct sidewall horizontal venting.
—
In the U.S. :
Per section E.11 of NFPA 31-2020 Standard for the Installation of Oil Burning Equipment, a listed
power venter providing mechanical draft may be used when approved by the Authority having jurisdiction. Select
the listed power venter to match the BTU per hour input of the boiler being vented. Follow all manufacturer’s
installation and operating instructions for venting and termination included with the power venter.
PN 240013023, Rev. B [12/31/2020]
