Lennox g24m series Instalation Instructions
50hz
Hide thumbs
Also See for g24m series:
- Unit information (37 pages) ,
- Installation instructions manual (32 pages) ,
- User's information manual (6 pages)
Advertisement
Quick Links
Advertisement
Related Manuals for Lennox g24m series
Summary of Contents for Lennox g24m series
- Page 1 Supersedes 03/99 WARNING Page 1...
- Page 2 *NOTE – The supply air opening is equipped with a 3/4 inch (19 mm) scored flange that may be bent 90_ for plenum connection. The dimensions shown were taken after the flange was bent. The double scored flange at the front of the supply air opening may be bent for a total opening dimension (front to rear) of either 19-1/2 inches (495 mm) or 19 inches (483 mm).
- Page 3 The following additional items may be ordered separately, if required: Page 3...
- Page 4 ° ° NOTE - G24M series units must not be used as a construction heater during any phase of construction. NOTE-For installation on combustible floors, the furnace shall Very low return air temperatures, harmful vapors and mis not be installed directly on carpeting, tile, or other combustible placement of the filters will damage the unit and lower its material other than wood flooring.
- Page 5 Page 5...
- Page 6 NOTE-Each opening shall have a free area of at least one square inch (645 mm ) per 1,000 Btu (.29 kW) per hour of the total input rat ing of all equipment in the enclosure, but not less than 100 square inches (64516 mm Page 6...
- Page 7 NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure. NOTE-Each air duct opening shall have a free area of at least NOTE-The inlet and outlet air openings shall each have a one square inch (645 mm ) per 2,000 Btu (.59 kW) per hour of...
- Page 8 NOTE - A sheet metal filter puller is provided along with the filter kit. In bottom return air applications, filter puller must be installed between frame and filter to hold filter in place. NOTE - 1/3 and 1/2 hp blower motors are equipped with ei ther four flexible mounting legs or three flexible legs and one rigid leg.
- Page 9 NOTE-Floor opening dimensions listed are 1/4" (6mm) larger than unit openings. NOTE-Floor opening dimensions listed are 1/4" (6mm) larger than additive base openings. Page 9...
- Page 10 NOTE - When the furnace is installed on a platform in a NOTE-Be careful not to damage fiberglass strips. crawlspace, it must be elevated enough to avoid water Check for tight seal. damage and to allow the air conditioning coil to drain. NOTE - Line contact is per missible.
- Page 11 NOTE - Use these instructions as a guide. They do not su persede local codes. Page 11...
- Page 12 SEALED NOTE 1 - Refer to the provided venting tables for installations in the USA and the venting tables in CAN/CGA-B149.1 for installations Canada. NOTE 2 - Either single walled or double walled vent connector may be used. Refer to the capacity requirements shown in the provided venting tables for installations in USA and the venting tables in current CAN/ CGA-B149.1 for installations in Canada.
- Page 13 NOTE- Refer to provided venting tables for installations in the USA and the venting tables in current CAN/CGA- B149.1 for installations in Canada. NOTE - chimney must be properly sized per provided venting tables or lined with listed metal lining system.
- Page 14 See local and national installation codes for support intervals and methods. National installation code in the U.S.A is current edition of Na- tional fuel Gas Code (ANSI–Z223.1). National installa- tion codes in Canada are current editions of CAN/ CGA–B149 codes. Page 14...
- Page 15 NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90_ elbows. For each additional 90_ elbow or equivalent (for example two 45_ elbows equal one 90_ elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maximum listed capacity).
- Page 16 NOTE: Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90_ elbows. For each additional 90_ elbow or equivalent (for example two 45_ elbows equal one 90_ elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maximum listed capacity).
- Page 17 Page 17...
- Page 18 Page 18...
- Page 19 NOTE - Install a 1/8 inch NPT plugged tap in the field piping upstream of the gas supply connection to the unit. The tap must be accessible for test gauge connection. See figure 16. NOTE - In case emergency shutoff is required, shut off main manual gas valve and disconnect main power to unit.
- Page 20 DRIP LEG DRIP LEG NOTE - In case emergency shutoff is required, shut off the main manual gas valve and disconnect the main power to the furnace. These devices should be properly labeled by the installer. The furnace must be isolated from the gas supply system by closing its individual manual shut off valve during any pressure testing of the gas supply system at pressures equal to or less than 1/2 psig (3.48 kPa).
- Page 21 Page 21...
- Page 22 Page 22...
- Page 23 White Rodgers 36E Gas Valve - ° Honeywell VR8205 Gas Valve - White Rodgers 36E Gas Valve - ° Honeywell VR8205 Gas Valve - NOTE-When unit is initially started, steps 1 through 11 may need to be repeated to purge air from gas line. Page 23...
- Page 24 ° Fan-off Delay Adjustment Page 24...
- Page 25 Note - CFM readings are taken external to unit with a dry evaporator coil and without accessories. Note - Units may be equipped with either leaded or lead less blower motors. NOTE - TERMINATION OF ANY UNUSED MOTOR LEADS MUST BE INSULATED. Page 25...
- Page 26 BURNER Page 26...
- Page 27 Page 27...
- Page 28 Page 28...
- Page 29 Page 29...
- Page 30 Page 30...
- Page 31 THERMOSTAT CALLS FOR COOLING. Page 31...