Product Features And Specifications; Gas Pressures; Ignition Controls - Millivolt; Pilot/Ods - Monessen Hearth NB18 Installation And Operating Instructions Manual

PRODUCT FEATURES
MAkE SURE YOU HAVE RECEIVED ALL
PARTS:
Check your packing list to verify that all listed parts have
been received. You should have the following:
NB Models
•
Unvented Gas Log Burner Assembly
•
Two (2) Plastic Bags Containing Crushed Volcanic
Rock
•
Installation/Operating Instructions
•
Two (2) Anchoring Screws
•
Ceramic Fiber Logs / Refractory Logs
•
Rock wool & Bright Embers
•
Grate Assembly
•
On/Off Log Switch Assembly (MV Models Only)
•
Thermostat Remote Control (SCR Models Only)
•
'AA' Batteries (SC Models only)
The following options may be used with the millivolt con-
trolled heater. These options are not packaged with the
log set.
•
Hand Held Remote with Receiver (MV)
•
Wall Thermostat with 15' Wire
•
Wall Switch with 15' Wire
Carefully inspect the contents for shipping damage. If any
parts are missing or damaged, immediately inform the
dealer from whom you purchased the appliance. Do not
attempt to install any part of the appliance unless you
have all parts in good condition.
WHAT YOU WILL NEED FOR
INSTALLATION:
You should have the following items available before pro-
ceeding with installation:
•
External regulator (for propane/LPG and 1/2 psi
natural gas systems only)
•
Piping which complies with local codes
•
Sediment trap (recommended)
•
Screwdriver
•
Tee joint.
•
Pipe sealant approved for use with propane/LPG
(Resistant to sulfur compounds)
•
Drill with 5/32 masonry bit
•
Pipe wrench or appropriate size crescent wrench
set
•
Manual shutoff valve
Gloves are recommended when handling
ceramic fiber logs to prevent skin irritation
from loose fibers. Logs are fragile — handle
with care.
81D0107

GAS PRESSURES

Inlet Minimum
Inlet Maximum
Regulator Pressure Setting
Pilot Regulator
GAS SPECIFICATIONS
Model Fuel
NB18 Natural
NB24 Natural
NB18 LP
NB24 LP
NATURAL GAS
NOTE: An external regulator is required to reduce supply
pressure to a maximum of 10Z\x" w.c. on natural gas sys-
tems operating at higher pressure.
PROPANE/LPG
NOTE: An external regulator is required to reduce supply
pressure to a maximum of 13" w.c.
MILLIVOLT IGNITION CONTROLS
Piezo ignitor allows ignition of the pilot without the use of
matches or batteries.
Millivolt control has four (4) positions:
OFF - All gas to the gas logs is shut off at the
valve.
IGN - Valve position to light/maintain a stand-
ing pilot.
ON
- Valve position to turn ON/OFF log set
with remote switch/thermostat.
LOW/HI - Variable position to control flame height
(heat output).
SIGNATURE COMMAND CONTROLS
Refer to Page 28

PILOT/ODS

The gas log heater is fitted with a specially designed
safety pilot (ODS assembly) which senses the amount
of oxygen available in the room and shuts the gas log
heater off if the oxygen level begins to drop below
a satisfactory level. The pilot can only be relit when
adequate fresh air is available.

THERMAL GENERATOR

The millivolt gas log pilot is fitted with a millivolt
(thermopile) generator to provide power for remote
activation.
NB18/NB24 Gas Log Set
Natural Propane (LP)
5.0" w.c. 11.0" w.c.
10.5" w.c. 13.0" w.c.
3.5" w.c. 11.0" w.c.
3.5" w.c. n/a
Gas Rate
Max.Input Min. Input
BTU/h BTU/h
28,000 19,000
37,000 25,000
27,000 22,000
36,000 28,000
5