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KITS AND ACCESSORIES LithoU,S.A,
©1997 Lennox industries inc.
Datlas, Texas
503,771M
10/97
FURNACE TRANSITION KIT
INSTALLATION INSTRUCTIONS FOR FURNACE TRANSITION KIT CAT# 16L44
(LB-93421A), AND CAT# 16L45 (LB-93422A) USED WHEN CONVERTING FROM GSR14
UNITS TO GHR26 UNITS (HORIZONTAL)
Package 1 of 1 contains:
1 - Insulated supply air transition
1 - Insulated return air transition
4- Base rails
1 - Base brace
16 - #8 sheet metal screws
1 - Roll of adhesive-backed foam tape (1/8" thick x
5/16" wide)
Check all components for shipping damage. Consult
last carrier immediately if damage is found.
Table 1 shows furnace transition kit usage. These kits
are used when replacing an existing GSR14
horizontal furnace with a GHR26 horizontal furnace, tt
allows installation of the GHR26 furnace without
modification of the existing supply and return air
plenums.
Note - GHR26 units can only be installed left side
discharge when using these transition kits.
Note - Some GSR14 units may have been installed
with little or no clearance to the unit's top side. Since
the GHR26 unit's vent exits this side, interference
may be encountered, ff it is, field fabricated
transitions may be required.
Refer to figure 1 for typical GSR14 installation.
1 - Set the thermostat to the lowest setting.
2 - Disconnect electrical power to GSR14 unit.
3- Shut off gas to GSR14 unit.
4 - Disconnect supply and return air plenums.
5 - Remove control access panel,
6 - Cut combustion air intake pipe and exhaust pipe
in location(s) which will allow convenient
reconnection of pipes to GHR26 unit, and/or
removal of muffler(s) (if installed), Remove
muffler(s) (if installed). Support intake and
exhaust pipes to prevent damage to pipe joints,
7 - Cut condensate drain line in a location which will
allow convenient reconnection with GHR26 unit.
8 - Disconnect gas line at unit.
9 - Disconnect power wiring at unit,
10 -Disconnect low voltage wiring at unit.
11 -Remove blower access panel.
12 -Remove filter from inside of unit (if present) and
disconnect return air plenum at unit.
Note - Existing GSR14Q4/5-80/100 filter can be
used in GHR26Q4/5-100 units.
13 -Remove GSR14 unit.
TABLE 1
GSR14 CABINET WIDTH GHR26 CABINET WIDTH KIT CAT# (LB#)
inches (mm) inches (mm)
Q3-50 21-1/4 (540) Q2/3-50 16-1/4 (413) 16L44 (LB-93421A)
Q3-80 2t-1/4 (540) Q3-75 t6-1/4 (413) 16L44 (LB-93421A)
Q4/5-80 21-1/4 (540) Q4/5-100 21-1/4 (540) 16L45 (LB-93422A)
Q4/5-t00 21-1/4 (540) Q4/5-100 21-1/4 (540) 16L45 (LB-93422A)
Note - There is no direct replacement for GSR14Q4-50 unit with a GHR26 unit.
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