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Hersteller: Lennox International Inc. Dateigröße: 358.47 kb Dateiname: 9cd77c3f-41d7-44d5-86b9-9db725e57f67.pdf Unterrichtssprache:

If coil needs to be removed, line 1 -External Filter rack (used with kit CAT# 16L23 and sets may need to be cut, which in turn requires system 16L24) pump-down or refrigerant recovery depending on 1 -Internal filter rack top piece (used with kit CAT# type of service valves provided on condensing unit or 16L25) ambient outdoor temperatures. 1 -Internal filter rack bottom piece (used with kit CAT# 16L25) Refer to figure 1 for typical G14 installation. 1 -Filter rack door A -G14 units without air conditioning 1 -Roll of adhesive-backed foam tape (1/8" thick x 5/16" wide) 1 -Set the thermostat to the lowest setting, 8-Insulation pins 2 -Disconnect electrical power to G14 unit, 8-Insulation washers 3-Shut off gas to G14 unit. 1 -1/2" CPVC x 1/2"PVC bushing 4 -Disconnect supply air plenum at unit top. 2 -Wire ties (used with kit CAT# 16L25) 5 -Remove control access panel, 6 -Cut combustion air intake pipe and exhaust pipe in location(s) which will allow convenient Check all components for shipping damage. Consult reconnection of pipes to G26 unit, and/or last carrier immediately if damage is found. removal of muffler(s) (if installed). Remove muffler(s) (if installed), Support intake and exhaust pipes to prevent damage to pipe joints, Table 1 shows furnace transition kit usage. These kits 7 -Cut condensate drain line in a location which will are used when replacing an existing G14 upflow allow convenient reconnection with G26 unit. furnace with a G26 upflow furnace. It allows 8 -Disconnect gas line at unit. installation of the G26 furnace without modification 9 -Disconnect power wiring at unit. of the existing supply and side return air plenums. Bottom return air applications do not require the 10 -Disconnect low voltage wiring at unit. provided filter rack, 11 -Remove blower access panel. TABLE 1 G14 CABINET WIDTH G26 CABINET WIDTH KIT CAT# (LB#) inches (mm) inches (mm) Q3-40 21-1/4 (540) Q2/Q3-50 16-1/4 (413) 16L23 (LB-89657A) Q3-60 21-1/4 (540) Q3-50 or Q3-75 16-1/4 (413) 16L23 (LB-89657A) Q4-60 21-1/4 (540) Q4/5-75 21-1/4 (540) 16L25 (LB-89658A) Q3-80 21-1/4 (540) Q3-75 16-1/4 (413) 16L23 (LB-89657A) Q4-80 21-1/4 (540) Q4/5-75 21-1/4 (540) 16L25 (LB-89658A Q5-80 26-1/4 (667) Q4/5-75 21-1/4 (540) 16L24 (LB-89657B) Q3-100 26-1/4 (667) Q3/4-100 21-1/4 (540) 16L24 (LB-89657B) Q4/5-t00 26-1/4 (667) Q4/5-100 21-1/4 (540) 16L24 (LB-89657B) Page 1 12-Removefilter from insideof unit (if present). Units with side return air -Disconnect side return air plenum at unit. Units with bottom return air -Disconnect unit base from return air plenum. 13 -Remove G14 unit, B -614 units with air conditioning IMPORTANT 1 -Set the thermostat to the lowest setting. 2-Disconnect electrical power to G14 and condensing unit. 3-Shut off gas to G14 unit. 4 -Remove control access panel. 5 -Cut and remove any section of intake pipe which blocks access to air conditioning coil. Cut intake and exhaust pipe at a location(s) which will provide convenient reconnection of pipe(s) to G26 unit and/or removal of muffler(s) (if installed). Remove muffler(s) (if installed), Support intake and exhaust pipe to prevent damage to pipe joints. 6 Remove coil access panel. 7Disconnect coil cabinet/supply air plenum at G14 unit top. If coil/coil cabinet can be lifted enough to provide vertical clearance for removal of G14 unit, support coil/coil cabinet at needed height and go to step 11. If not, prepare coil for removal. 8 If condensing unit has fully functional service valves and outdoor ambient conditions permit operating compressor, pump-down refrigerant system; if not, recover refrigerant. Cut line sets and coil drain line in a location which will provide convenient reconnection. support to allow for coil removal, Move and 10 -Slide coil from coil cabinet/supply air plenum. 11 -Cut G14 heat exchanger condensate drain line in a location which wilt provide convenient reconnection with G26 unit. 12 -Disconnect gas line at unit. 13 -Disconnect power wiring at unit. 14 -Disconnect low voltage wiring at unit. 15-Remove blower access panel. 16 -Remove filter from inside unit (if present) Units with side return air -Disconnect side return air plenum at unit. Units with bottom return air -Disconnect unit base from return air plenum, Page 2 TYPICAL G14 INSTALLATION FLEXIBLE BOOT i FLEXIBLE ISOLATION HANGER / SUPPLY AIR j ...... J ...... /_ _ RETURN i i AIR ii f-f ii ii j-.... i" ---FLEXIBLE BOOT IN EXHAUST PIPE RETURN AIR PLENUM SUPPLY AIR PLENUM = MANUAL INSULATED PAST FIRST ELBOW MAIN SHUT OFF VALVE FLEXIBLE BOOT IN PLENUM - GAS SUPPLY PIPING MUFFLER CONTROL ACCESS PANEL GP_ ELECTRICAL CONDUIT CONDENSATE DRIP LEG ............. 0 RETURN AIR PLENUM INSULATED PAST FIRST ELBOW FLEX BLE BOOT N BLOWER RETURN AIR PLENUM COMPARTMENT i ACCESS FANEL ! ISOLATION PADS (ISOMODE) (4) ._ FIGURE 1 A -Filter Rack Installation (Side Return Only) Note -Filter rack is not used in bottom return air applications. Note -Instal...

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