Ascent Combi & Ascent Plus Combi Gas Heat
– PN 10-2099 – May 2020
5
COMMONWEALTH OF MASSACHUSETTS
When the boiler is installed within the Commonwealth of Massachusetts:
This product must be installed by a licensed plumber
If antifreeze is used, a reduced pressure backflow preventer device shall be used.
INSTALLER NOTE:
ALL INSTALLATIONS MUST BE MADE IN ACCORDANCE WITH ALL NATIONAL, STATE AND
LOCAL, PLUMBING, HEATING AND ELECTRICAL CODES THAT MAY DIFFER FROM THIS
MANUAL AND IN ACCORDANCE WITH THE FOLLOWING CODES, AS APPLICABLE:
N.F.P.A. No. 70: National Electrical Code A.N.S.I. / N.F.P.A. No. 211: Chimneys, Fireplaces,
Vents and Solid Fuel Burning Appliances A.N.S.I. Z223.1/N.F.P.A. No. 54: National Fuel Gas
Code If this gas-fired boiler is converted to oil-fired by field mounting a listed oil conversion
burner, then install in accordance with A.N.S.I./N.F.P.A. No. 31: Installation of Oil Burning
Equipment
These codes are available from:
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269-9101.
A hot water boiler installed above radiation level or as required by the Authority having
jurisdiction, must be provided with a low water cutoff device.
A boiler should be installed in such a manner that, if the pressure vessel or any connection
thereto should leak, the resulting flow of water will not cause damage to the area in which it
is installed.
A hot water storage tank should be installed in such a manner that, if the storage tank or any
connection thereto should leak, the resulting flow of water will not cause damage to the area
in which it is installed.
A boiler’s pressure relief valve, hot water storage tank T&P relief valve, backflow preventer,
and all other devices must be piped to the nearest drain to avoid damage in the event the
valve is actuated.
Make sure relief discharge pipes from all reliefs are properly placed to safely contain
discharge. Make sure relief discharge pipes, such as from a boiler or a hot water storage
tank, will safely contain hot water and/or boiling water. Make sure relief discharge pipes,
such as from a boiler or a radiant heating system, will safely contain water treated with boiler
chemicals and/or antifreeze. Reliefs include the boiler pressure relief valve, the back flow
preventer discharge port, and the domestic hot water tank temperature and pressure relief
valve. Any other reliefs, such as from radiant heating systems, must also follow these
guidelines.
