Lennox Hearth Products ELDV-35NM Care And Operation Instructions Manual page 7

BTU Input
Millivolt and electronic models come standard
with a manually-modulated gas valve; flame
appearance and heat output can be controlled
at the gas valve. The BTU Input for these ap-
pliances are shown in Table 1.
Input (BTU/HR) (all models)
Input Rate (BTU / HR)
Models
Natural Gas Propane Gas*
27,000 high
ELDV35
21,000 low
29,000 high
ELDV40
23,000 low
30,000 high
ELDV45
23,000 low
*Electronic valves may be
Table 1
converted to propane.
Gas Pressure
Tables 2 and 3 show the appliances' gas
f i r e - p a r t s . c o m
pressure requirements.
Inlet Gas Supply Pressure
(all models)
Fuel # Minimum
4.5" WC
Natural Gas
(1.12 kPa)
11.0" WC
Propane
(2.74 kPa)
Table 2
Manifold Gas Supply Pressure
(all models)
Fuel # Low
Natural (Lo) 2.2" WC (Hi) 3.5" WC
Gas (0.55 kPa)
(Lo) 6.3" WC (Hi) 10.0" WC
Propane
(1.57 kPa)
Table 3
Test gauge connections are provided on the
front of the millivolt gas control valve, identi-
fied IN for the inlet and OUT for the manifold
side (see Figure 2 on Page 9). A 1/8" NPT
Test gauge connection is provided at the inlet
and outlet (manifold) ports on the electronic
gas control valve (see Figure 3 on Page 9).
These appliances must be isolated
from the gas supply piping system (by
closing their individual manual shut-off
valve) during any pressure testing of
26,000 high
the gas supply piping system at test
20,000 low
pressures equal to or less than 1/2 psig
27,000 high
22,000 low
(3.5 kPa).
28,000 high
21,000 low
These appliances and their individual
shut-off valves must be disconnected
from the gas supply piping system dur-
ing 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
Maximum
feet (0-1372 meters) above sea level using the
standard burner orifice sizes (marked with an
10.5" WC
"*" in Table 4).
(2.61 kPa)
13.0" WC
For higher elevations, contact your gas supplier
(3.23 kPa)
or qualified 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.
High
(0.87 kPa)
(2.49 kPa)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Burner Orifice Sizes
Elevation 0-4500 feet ( 0-1372 meters)
Model Nat.Gas
Series drill size (inches) drill size (inches)
#38 (0.1015")* #53 (0.0595")*
ELDV35
99K76•
#37 (0.1040")*
ELDV40
24M10•
#36 (0.1065")* #52 (0.0635")*
ELDV45
74L88•
* Standard size installed at factory
Table 4
• Part /Cat. Number
Deration -
At higher elevations, the amount of BTU fuel
value delivered must be reduced by either
using gas that has been derated by the gas
company or by changing the burner orifice to a
smaller size as regulated by the local authorities
having jurisdiction and by the (USA) National
Fuel Gas Code NFPA 54/ANSI Z223.1 - latest
edition or, in Canada, the CAN/CSA-B149.1 -
latest edition.
Burn-in Period
During the first few fires 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.
If an optional blower is installed, Do Not turn
it on during the Burn-In period.
A white film may develop on the glass front
during the first few fires as part of the curing
process. The glass should be kept clean during
the first two weeks of use to prevent the film from
baking on (making it very difficult to remove).
See Cleaning Glass on Page 10.
Propane
39L10•
(0.062")*
21L01•
80L41•
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