General Information - Lennox Montebello MDLX40IN Care And Operation Instructions Manual

LENNOX HEARTH PRODUCTS • MONTEBELLO

GENERAL INFORMATION

The fi replace models covered in
this manual are direct-vent, sealed
combustion gas fi replaces designed
for residential application. Direct-vent
appliances operate with the combustion
chamber completely isolated from the
indoor environment.
All air for combustion is brought in from
the outside and exhaust gases are vented
through the same direct-vent, co-axial
(intake/exhaust) vent system.
The appliances are designed to operate
on natural or propane gas only and
contain an electronic intermittent pilot
system. Electrical power (120 Vac line
voltage) is recommended to operate the
fi replace; however, four (4) "AA" batteries
can be used for full-time operation or as
a backup in case of a power outage.
These appliances comply with National
Safety Standards and are tested
and listed by Intertek (Report No.
100513650PRT-001) to ANSI Z21.50
(in Canada, CSA-2.22), and CAN/CGA-
2.17-M91 in both the USA and Canada
as vented gas fi replaces.
The Installation must conform to local
codes or, in the absence of local codes,
with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54—latest edition, or the
Natural Gas and Propane Installation
Code, CSA B149.1—latest edition. The
appliance, when installed, must be
electrically grounded in accordance with
local codes or, in the absence of local
codes, with the National Electrical Code,
ANSI/NFPA 70—latest edition, or the
Canadian Electrical Code, CSA C22.1—
latest edition.
BTU INPUT
All models come standard with a
manually-modulated gas valve; fl ame
appearance and heat output can be
controlled at the gas valve. The BTU
Input for these appliances are shown in
Table 1.
Model No. Input (BTU/Hr)
Natural Gas
MDLX40IN 32,000–50,000
MDLX45IN 38,500–60,000
Propane Gas
MDLX40IP 32,000–50,000
MDLX45IP 38,500–60,000
Table 1: Input (BTU/HrR)
® DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • CARE AND OPERATION INSTRUCTIONS
GAS PRESSURE
Table 2 and Table 3 show the
appliances' gas pressure requirements.
Fuel # Minimum
5.5 in. WC
Natural Gas
(1.37 kPa)
11.0 in. WC
Propane
(2.74 kPa)
Table 2: Inlet Gas Supply Pressure
Fuel # Low
1.6 in. WC
Natural Gas
(.4 kPa)
6.3 in. WC
Propane
(1.57 kPa)
Table 3: Manifold Gas Supply Pressure
Test gauge connections are provided
on the front of the gas control valve,
identifi ed IN for the inlet and OUT for
the manifold side (see Figure 1 on
Page 8). The control valves have a
3/8 in. (10 mm) NPT thread inlet and
outlet side of the valve.
These appliances must be isolated
from the gas supply piping system (by
closing their individual manual shut-
off valve) during any pressure testing
of the gas supply piping system at test
pressures equal to or less than 1/2
psig (3.5 kPa).
These appliances and their individual
shut-off valves must be disconnected
from the gas supply piping system
during any pressure testing of that
system at pressures greater than 1/2
psig (3.5 kPa).
ORIFICE SIZES—SEA LEVEL TO HIGH
ALTITUDE (ALL MODELS):
These appliances are tested and
approved for installations at elevations of
0–4500 feet (0–1372 meters) above sea
level using the standard burner orifi ce
sizes (marked with an "*" in Table 4).
For higher elevations, contact your gas
supplier or qualifi ed service technician.
Install the appliance according to the
regulations of the local authorities
having jurisdiction and, in the USA, the
National Fuel Gas Code NFPA 54 / ANSI
Z223.1—latest edition or, in Canada, the
CAN/CSA-B149.1—latest edition.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Model
0.1405 in. (#28)*
MDLX40
Maximum MDLX45
10.5 in. WC
(2.61 kPa)
Table 4: Burner Orifi ce Sizes,
13.0 in. WC
Elevation 0–4500 ft ( 0–1372 m)
(3.23 kPa)
Deration
At higher elevations, the amount of BTU
fuel value delivered must be reduced by
either using gas that has been derated
High
by the gas company or by changing
3.5 in. WC
the burner orifi ce to a smaller size as
(.87 kPa)
regulated by the local authorities having
jurisdiction and by the (USA) National
10.0 in. WC
(2.49 kPa) Fuel Gas Code NFPA 54/ANSI Z223.1—
latest edition or, in Canada, the CAN/
CSA-B149.1 codes—latest edition.
Burn-in Period
During the fi rst few fi res of this
appliance there will be some odor due to
the curing of the paint and burning off
of lubricants used in the manufacturing
process. Depending on your use, the
burn-in period may take a few hours or a
few days.
KEEP YOUR HOUSE WELL VENTILATED
DURING THE CURING PROCESS. THE
ODOR AND HAZE EMITTED DURING
THE CURING PROCESS CAN BE QUITE
NOTICEABLE AND MAY SET OFF A
SMOKE DETECTOR.
NOTICE:
on the glass enclosure panel during
the fi rst few fi res as part of the burn-
in process.
The fi rst few times you use the
fi replace, clean the glass after
each use (AFTER THE GLASS HAS
COMPLETELY COOLED); otherwise,
the white fi lm will bake onto the
glass and become diffi cult to
remove.
See glass cleaning instructions on
Page 9.
Natural Gas Propane
drill size (in.) drill size (in.)
0.086 in. (#44)*
• H2286 • H2287
0.154 in. (#23)* 0.093 in. (#42)*
• H8808 • H4816
* Standard size installed at factory
• Part /Cat. Number
A white fi lm may develop
7