Bmk1500 - 4000 Supply And Return Piping - Watts AERCO Benchmark Series Installation And Start-Up Manual

Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
2.6.2 BMK1500 – 4000 Supply and Return Piping
Benchmark Platinum 1500 – 3000 units have one 4" (10.2 cm) 150# flange for the water INLET
(supply) and one 4" (10.2 cm) 150# flange for the hot water OUTLET (return) piping
connections. They also include an optional second 4" (10.2 cm) 150# flange for the water
INLET, as shown in Figure 2-4b.
BMK1500/2000
Figure 2-4b: BMK1500 – 4000 Supply and Return Locations
Benchmark Platinum 4000 units have the same number and location of inlet, outlet and gas
piping, but they have 6" (15.2 CM) 150# flanges, and the Natural Gas inlet pipe is 3".
OMM-136_E • GF-210 • 12/13/2019
2" NATURAL GAS OR
1" PROPANE INLET
HOT WATER
OUTLET
(SUPPLY)
AIR INLET
SECONDARY WATER INLET
(WARMER WATER RETURN)
PRIMARY
WATER INLET
(COOLER WATER
RETURN)
EXHAUST MANIFOLD
CONDENSATE DRAIN
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
BMK2500-3000
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