LENNOX Air Handler (indoor Blower&evap) Manual L0805326
User Manual: LENNOX LENNOX Air Handler (indoor blower&evap) Manual LENNOX Air Handler (indoor blower&evap) Owner's Manual, LENNOX Air Handler (indoor blower&evap) installation guides
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BLOWER COIL KITS AND ACCESSORIES _2006 Lennox Industries Inc. Dallas, Texas, USA DOWNFLOW 504,947M 10/06 Supersedes 04/05 INSTALLATION INSTRUCTIONS USED WITH CB27UH, CBX27UH, Tech n [cal bHcations Litho U.S.A. INSTALLATION KIT FOR DOWNFLOW KIT (83M57) CB29M, CB30M, & CBX32M UNITS Package 1 of 1 contains the following: AkWARNING 3 - Pairs of coil support rails (left and right) 2 - Filter support racks 5 - Pairs of downflow drip shields 1 - Bag assembly which contains: 8 - 4-3/4" X 2" lengths of foam tape 2 - 20" X 1" lengths of foam tape A CAUTION Downflow installation kit (83M57) is used when CB27UH, CBX27UH, CB29M, CB30M, or CBX32M blower coil is installed in a downflow application. See figure 1 for kit components. 1. Remove the access panels. Remove the corrugated padding between the blower and coil assemblies, RACKS 2. Remove the coil assembly from the unit, 3. Remove the horizontal drain pan from the blower coil unit (see figure 2), 4. Rotate cabinet 180 ° from the upright position (see figure 2). It may be necessary to remove the blower assembly to lighten the cabinet for lifting, r q II mJi_ Horizontal Drain Pan (Remove and discard) II Upflow/ Drain Pan Downflow Figure 1. Kit Components 10/06 IIIIIII]lllllllllHllllllHIHIlllllll Figure Page 1 _,_ 2. Downflow Discharge Position 504,947M IIIIIIIIIIIIIIIHIIIIIIIIIIIII 5. Remove the door support from the unit and set aside for re-installation (see figure 3). 6. Three pairs (left and right) of coil support rails are provided. Use the information given in table 1 to select the proper rails for the application. Position and install a coil support rail on each side of the cabinet. The rail should be installed level with the door support which was removed (see figure 3). Table 1. Coil Support Unit Model Rail Usage Number Drip Shields: Tape Required Unit Part No. Length Width CB29M-46 LB-74274 15.875 4.6718 CB29M-51, -65 LB-74272 17.875 4.6718 POSITION AND INSTALL COIL SUPPORT RAILS ALONG THE SIDE OF THE CABINET LEVEL WITH DOOR SUPPORT Rail Length CB27UH-018, -024 CBX27U H-018, -024 CB29M-21/26, -31, -41, -46 CB30M-21126, -31 CBX32M-018/024, -030 20-7/16" CB27UH-030, -036 CBX27UH-030, -036 CB29M-51, -65 CB30M-41, -46 CBX32M-036, -042 22- 7/16" Remove and set aside Figure CB27UH-042, -048, -060 CBX27UH-042, -048, -060 CB30M-51, -65 CBX32M-048, -060 3. Coil Support Rail Location 24- 7/16" 7. Loosen the existing screw on each side of the back of the cabinet. Slide the rear coil support rail slot over the screw and tighten the screw securely (see figure 4). 8. Use the existing screws to secure the front of the coil support rails and the existing door support (see figure 5). 9. Use tables 2 and 3 to select the properly sized drip shields for the unit. Drip shields divert condensate to drain pan when blower coil is installed in the downflow position. NOTE - Downflow drip shields are not required for use with CB29M-21/26, CB30M-21/26, and CBX32M-Of 8/024 units. Table 2. Downflow Table 3. Downflow Drip Shields: LOOSEN EXISTII G SCREW AT BACK OF CABINET SLIDE SLOTTED EDGE OF RAIL OVER SCREW AND TIGHTEN SECURELY. Figure 4. Secure Back of Coil Support Rail No Tape Req'd Unit Part No. Length Width CB29M-31, -41 LB-88658 15.75 2.9187 CB27UH-018, -024 CBX27UH-018, -024 CB30M-31 CBX32M-030 LB-88658 15.75 2.9187 CB27UH-030, -036 CBX27UH-030, -036 CB30M-41, -46 CBX32M-036, -042 LB-88663 17.75 3.9187 CB27UH-042, -048, -060 CBX27UH-042, -048, -060 CB30M-51, -65 CBX32M-048, -060 LB-88664 19.75 USE EXISTING SCREWS TO INSTALL COIL SUPPORT RAIL AND EXISTING DOOR SUPPORT 3.9187 Figure Page 2 5. Secure Front of Coil Support Rail NOTE - WHEN REQUIRED, apply pre-cut foam tape as described in steps 10 and11. The foam tape creates a seal between the drip shield and both the coil and the drain pan so that water will not be allowed into the air stream. 10. Apply two pieces of foam tape (provided) down both ends of each shield. The tape should measure 4-3/4" X 2" (120 X 25 mm), Ensure that the tape covers both sides of the shield equally (see figure 6). SIDE VIEW Figure 6 Figure 7 11. Apply the longer piece of foam tape on one side between the pieces on each end. This piece of tape is 1" wide and should be trimmed to fit (see figure 7). 12. From the underside of the coil, install the downfiow drip shield. Make sure that the shield is firmly in place, It may be necessary to apply light force to position the shields into the bottom of the drain pan (see figure 8). NOTE - Drip shields should fit snugly against both the coil and drain pan. Insulating tape may be required along the full length of the bottom of shields used with CB27UH, CBX27UH, CB3OM, CBX32M and smaller CB29M units to ensure a good seal (see figure 8). CB27UH,CBX27UH, Units without CB29M, CB30M or CBX32M Tape (See Foam Table 2) Shield Coil 13. Slide the coil assembly and the blower back into the cabinet, if they were removed. Replace the coil access panel. __ • NOTE - Drip shield must fit snugly against both the coil and drain pan. It may be necessary to apply insulating tape along the full length of the bottom edge of each shield in order to ensure a seal against the coil. Drain Pan 14. Install the appropriate rear filter support rack between the filter rails (see figure 9). Use 14-1/2" support rack for 16-1/4" cabinet and 19-1/2" rack for 21-1/4" cabinet, Slide the filter between the filter rails as shown. Coil 15. Make sure that the unit is level. Use sheet metal screws to connect the return and supply air plenums, as required, XkWARNING Units with Foam Tape (See Table 3) CB29M-46, -51, -65 Drip Shield Drain Pan Figure 8. Downflow Drip Shields NOTE - In downflow applications, use only metal or class I supply and return air plenums. 16. Replace blower access panel. 17. Install the unit according to the unit installation instructions. Page 3 Figure 9. Filter Support Rack Installation
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