WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during installation, maintenance, or repair will expose you to fiberglass wool dust. Breathing this may cause lung cancer. (Fiberglass wool is known to the State of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin, and eye irritation.
To reduce exposure to this substance or for further information, consult material safety data sheets available from address shown below, or contact your supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
These units must be installed in accordance with all applicable national and local safety codes.
These instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation.
If components are to be added to a unit to meet local codes, they are to be installed at the dealer’s and/or customer’s expense.
These units are design listed by UL in both the United States and Canada as follows:
DFor use as a forced air furnace with cooling.
DFor outdoor installation only.
DFor installation on combustible material.
DFor use with natural gas or L.P./propane gas only. Use of L.P./propane gas requires installation of an L.P. conversion kit, which must be ordered separately.
These units are not suitable for use with conventional venting systems.
The following safety requirements must also be met when the 15GCSX units are installed:
1 − Use only with the type of fuel approved for use with this appliance. Refer to the unit rating plate.
2 − Position, locate and install the 15GCSX unit only as outlined in these instructions.
3 − Provide adequate clearance around the vent hood as specified in these instructions.
4 − Do not use an open flame to check for gas leaks. Use a commercially available soap solution, which has been designed specifically to check for gas leaks. Refer to the Gas Supply and Piping section.
5 − Check the unit operation after start−up to make sure that the 15GCSX is operating within the intended temperature rise range. The duct system must be designed to provide an external static pressure within the allowable range. Refer to the unit rating plate.
Lennox does not recommend the use of 15GCSX units as a construction heater during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.
15GCSX units may be used for heating of buildings or structures under construction, if the following conditions are met:
DThe vent hood must be installed per these installation instructions.
DA room thermostat must control the furnace. The use of fixed jumpers that will provide continuous heating is not allowed.
DThe return air duct must be provided and sealed to the furnace.
DReturn air temperature range between 60°F (16°C) and 80°F (27°C) must be maintained.
DAir filters must be installed in the system and must be maintained during construction.
DAir filters must be replaced upon construction completion.
DThe input rate and temperature rise must be set per the unit rating plate.
DOne hundred percent (100%) outdoor air must be provided for combustion air requirements during construction. Installation of this unit in its intended outdoor location will accomplish this.
DThe heat exchanger, components, duct system, air filters and evaporator coil must be thoroughly cleaned following final construction clean−up.
DThe unit operating conditions (including ignition, input rate, temperature rise and venting) must be verified according to these installation instructions.
NOTE − The Commonwealth of Massachusetts stipulates these additional requirements:
D Gas furnaces shall be installed by a licensed plumber or gas fitter only.
DThe gas cock must be
DWhen flexible connectors are used, the maximum length shall not exceed 36".
Location Selection
Use the following guidelines to select a suitable location for these units.
1 − Unit is designed for outdoor installation only. Unit must be installed so all electrical components are protected from water.
2 − Condenser coils must have an unlimited supply of air. 3 − For ground level installation, use a level pre−fabricated pad or use a level concrete slab with a minimum thickness of 4 inches. The length and width should be at least 6 inches greater than the unit base. Do not tie
the slab to the building foundation.
4 − Maintain level within a tolerance of 1/4 inch maximum across the entire length or width of the unit.
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