Flue Gas Vent Installation; Massachusetts Installations - Watts AERCO Benchmark BMK750 Installation And Start-Up Manual

Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
Connector Strip J14 Terminals
Pin # Name
BAS RS485 +
1
2 BAS RS485 -
3 RS485 Local +
4 RS4585 Ground
5 RS485 Local -

2.12 FLUE GAS VENT INSTALLATION

AERCO's Benchmark Venting and Combustion Air Design Guide, TAG-0022 (GF-2050) must
be consulted before any flue or combustion air venting is designed or installed. Suitable, U/L
approved, positive pressure, watertight vent materials MUST be used for safety and UL
certification.
Once you have selected the vent material, enter that material in the Edge Controller:
Main Menu → Advanced Setup → Unit → Unit
1. Go to:
2. Find the Vent Type parameter.
3. Set the value of this parameter to match your vent material: PVC, Polypro or Stainless
Steel. This sets the exhaust temperature limits. Note, PVC is not allowed in the state of
Massachusetts.
Because the unit is capable of discharging low temperature exhaust gases, the flue must be
pitched back towards the unit a minimum of 1/4" per foot (0.64 cm per 0.3 m) to avoid any
condensate pooling and to allow for proper drainage.
While there is a positive flue pressure during operation, the combined pressure drop of vent and
combustion air systems must not exceed 140 equivalent feet (42.7m) or 0.8" W.C. (199 Pa).
Fittings as well as pipe lengths must be calculated as part of the equivalent length. For a natural
draft installation, the draft must not exceed -0.25" W.C. (-62 Pa). These factors must be
planned into the vent installation. If the maximum allowable equivalent lengths of piping are
exceeded, the unit will not operate properly or reliably.

2.12.1 MASSACHUSETTS INSTALLATIONS

For Massachusetts installations, the following companies provide vent systems that conform to
all applicable requirements for installations within the Commonwealth of Massachusetts.
Contact information is as follows:
Selkirk Corporation - Heatfab Division
130 Industrial Blvd.
Turners Falls, MA 01376
Phone: 1-800-772-0739
www.heatfab.com
Glover Sheet Metal, Inc.
44 Riverdale Ave.
Newton, MA 02485
Phone: (617) 527-8178
www.gloversheetmetal.com
• GF-210 •
OMM-136_G
Description
Connection to the building automation system (BAS) network (Modbus RTU,
BACnet MSTP). For IP network, use the Ethernet port.
Reserved for internal use only
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
8/20/2020
Settings.
Watertown Supply
33 Grove St.
Watertown, MA 02472
Phone: (617) 924-2840
www.watertownsupply.com
Emerson Swan Co
Engineering Products Department
300 Pond St.
Randolph, MA 02368
Phone 781-986-2555
Fax 781-986-2027
www.emersonswan.com
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