AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 48)

GF-135 Esteem 399 Low NOx Boiler
Chapter 7
OMM-0089_0A
Installation, Operation & Maintenance Manual Gas Piping
7.3.2 Propane Gas Supply Pressure Requirements
1. Adjust the propane supply regulator provided by the gas supplier for 13” W.C. maximum
pressure.
2. Pressure required at the gas valve inlet supply pressure port:
• Maximum 13” W.C. at flow or no flow conditions to the burner.
• Minimum 5” W.C. during flow conditions to the burner. Must be verified during start
up and with all other gas appliances operating within the building.
WARNING!
Do not
adjust or attempt to measure gas valve outlet pressure.
The gas valve is factory-set for the correct outlet pressure. This
setting is suitable for natural gas and propane and requires no field
adjustment. Attempts by the installer to adjust or measure the gas
valve outlet pressure could result in damage to the valve, causing
potential severe personal injury, death or substantial property
damage.
WARNING!
Prior to start up, ensure the unit is set to fire propane. Check the
rating label for the type of fuel. Check the gas valve for propane
conversion label. If there is a conflict or doubt on the burner set up,
remove the gas valve and check for the propane orifice. See Figure
7-2. Failure to ensure proper burner setup could result in severe
personal injury, death or substantial property damage.
NOTE
The propane orifice required for the Esteem 399 Low NOx boiler is
0.264” (6.7 mm).
Page 48 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288