Fuel Type; Gas Pressure; Gas Service Access - Monessen Hearth NBST27NV-B Installation & Owner's Manual

C. Fuel Type
• This appliance is equipped for either natural or propane
gas. Field conversion is not permitted.
• Make sure the appliance is compatible with available gas
types.
D. Gas Pressure
• Optimum appliance performance requires proper input
pressures.
• Gas line sizing requirements will be determined in ANSI
Z223.1 National Fuel Gas Code in the USA.
• Pressure requirements are:
Inlet Minimum
Inlet Maximum
Gas Valve Manifold
Pressure Setting
Pilot Regulator
WARNING! Risk of Fire or Explosion! High pressure
will damage valve. Low pressure could cause explosion.
• Verify inlet pressures. Verify minimum pressures when
other household gas appliances are operating.
• Install regulator upstream of valve if line pressure is
greater than 1/2 psig.
• Valve pressure taps are accessible prior to installing log
set.
Monessen • NBST27-B Gas Log Set Owner's /Installation Manual • 4615-900 Rev. D • 01/2020
NATURAL PROPANE (LP)
5.0" w.c. 11.0" w.c.
10.5" w.c. 13.0" w.c.
3.5" w.c. 10" w.c.
3.5" w.c. —
Note: Have the gas supply line installed in accordance with
local codes, if any. If not, follow ANSI 223.1. Installation
should be done by a qualified installer approved and/or
licensed as required by the locality. (In the Commonwealth
of Massachusetts installation must be performed by a
licensed plumber or gas fitter).
E. Gas Service Access
Depending upon local code, a manual gas shutoff, in
a readily accessible area may be required and located
upstream from the appliance.
WARNING
Fire Risk.
Explosion Hazard.
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
Test Port "OUT"
Figure 4.2 - Pressure Test Point Location Millivolt Control
FP2266
valve
15