General Information; Gas Pressure Specifications - State Water Heaters SUF60 Service Handbook

GENERAL INFORMATION

INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled
water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes,
including those owned or operated by the Commonwealth and where the side wall exhaust vent termination
is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks
and porches, the following requirements shall be satisfied:
INSTALLATION OF CARBON MONOXIDE DETECTORS
At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber
or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back up
is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber
or gas fitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm
is installed on each additional level of the dwelling, building or structure served by the sidewall horizontal
vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of
qualified service technicians for the installation of hard wired carbon monoxide detectors. In the event that
the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired
carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can not be met at the time of completion of installation,
the owner shall have a period of thirty (30) days to comply with the above requirements provided that during
said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
APPROVED CARBON MONOXIDE DETECTORS
Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA
720 and be ANSI/UL 2034 listed and CSA certified.
SIGNAGE
A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented
gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2") inch
in size,
"GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS."

GAS PRESSURE SPECIFICATIONS

MODELS
Maximum Gas
Supply Pressure (2.62 kPa)
Nominal Gas
Supply Pressure (1.74 kPa)
Minimum Gas
Supply Pressure
(Low Gas Press. (1.20 kPa)
Switch Setting)
Manifold Pressure
4
Natural Propane
120‑150 120‑150
10.5" WC 14.0" WC
(3.49 kPa)
7.0" WC 11.0" WC
(2.74 kPa)
4.8" WC 11.0" WC
(2.74 kPa)
4.0" WC 10.0" WC
(1.0 kPa) (2.49 kPa)
Servicing should only be performed by a Qualified Service Technician
Natural Propane
199‑250 199‑250
10.5" WC 14.0" WC
(2.62 kPa) (3.49 kPa)
7.0" WC 11.0" WC
(1.74 kPa) (2.74 kPa)
4.8" WC 8.5" WC
(1.20 kPa) (2.12 kPa)
0" WC 0" WC
(0 kPa) (0 kPa)
Natural Propane
300/400/500 300/400/500
11.0" WC 14.0" WC
(2.74 kPa) (3.49 kPa)
7.0" WC 11.0" WC
(1.74 kPa) (2.74 kPa)
5.2" WC 11.0" WC
(1.30 kPa) (2.74 kPa)
4.0" WC 10.0" WC
(1.0 kPa) (2.49 kPa)