Gas Specifications; Gas Inlet & Manifold Pressures; High Elevations; Preparation - Vermont Castings LHER20 Installation Instructions & Homeowner's Manual

Vermont Castings, Majestic Products LHE Natural Vent Insert

Gas Specifications

Model Fuel
LHEC20RN Natural Gas
LHEC20RP Propane Gas
LHEC20RFN Natural Gas Comfort Control 20,000
LHEC20RFP Propane Gas Comfort Control 20,000
LHER20RN Natural Gas
LHER20RP Propane Gas
LHEC30RN Natural Gas
LHEC30RP Propane Gas
LHEC30RFN Natural Gas Comfort Control 30,000
LHEC30RFP Propane Gas Comfort Control 30,000
Gas Inlet & Manifold Pressures
Minimum Inlet Pressure
Maximum Inlet Pressure
Manifold Pressure
Do not use this appliance if any part of it
has been under water. Immediately call a
qualified service technician to inspect the
unit and replace any part of the control
which has been under water.
These gas inserts are approved for installation in
solid fuel burning masonry or zero clearance
fireplaces.
LHEC20 / LHER20 / LHEC30
Certified To
ANSI Z 21.88-2002 / CSA 2.33-2002
Vented Gas Fireplace Heaters

High Elevations

Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations must be in accordance with the
current ANSI Z223.1 and/or local codes having
jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m).
6
Max. Min.
Input Input
Gas Control Btu/h Btu/h
Millivolt Hi/Lo 20,000 14,000
Millivolt Hi/Lo 20,000 15,000
14,000
15,000
Millivolt Hi/Lo 20,000 14,000
Millivolt Hi/Lo 20,000 15,000
Millivolt Hi/Lo 30,000 21,000
Millivolt Hi/Lo 30,000 22,500
21,000
22,500
Natural LP
5.5" . . 11.0" .
W C W C
14.0" . . 14.0" .
W C W C
3.5" . . 10.0" .
W C W C
Before beginning, remove glass door and logs from
unit. Also check to make sure there is no hidden
damage to the unit. Take a minute and plan out the
gas,venting and electrical route. It is best to start with
the gas line first followed by the chimney liner. (Refer to
Page 9)

Gas Line Installation

When purging the gas line, the front
glass must be removed.
If gas piping from the source to the heater location has
not been accomplished, install the required pipe.
Consult local plumbing code to assure proper pipe size.
The gas pipeline can be brought in through the rear or
the base of the heater.
NOTE: The gas line connection can be made of either
.
properly tinned 3/8" copper tubing, 1/2" rigid pipe or an
approved flex connector then reduced to 3/8" to the
.
heater. Some municipalities have additional local
.
codes, it is always best to consult your local authority
and the CSA- B149.1 installation code.
U.S. Installations consult the current National Fuel
Gas Code, ANSI Z223.1
Always check for gas leaks with a mild
soap and water solution. Do not use an
open flame for leak testing.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to
provide a 1/8" test point up stream of the control.
When using copper or flex connector, use only
approved fittings. Always provide a union when using
black iron pipe so the gas line can be easily
disconnected for burner or fan servicing. See gas
specifications for pressure details and ratings. NOTE:
If flex connector is used, it must be kept inside of the
heater.
1/2" Gas Supply
FP297
Fig. 4 Typical gas supply installation.

Preparation

1/2" x 3/8" Shut Off Valve
3/8" Nipple
3/8" Union
3/8"
Nipple
10005360