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2 -Cut two strips from roll of adhesive-backed foam tape (provided) to fit two cabinet sides as shown in figure. Apply to cabinet sides. 3 -Install transition as shown. C -Base Rails Installation, Refer to figure 2 1 -Install base rails as shown in figure 2. D -Unit Installation 1 -Align unit with existing supply air plenum (coil cabinet in air conditioning applications) and return air plenum, Make connections to unit. 2-Connect low voltage wiring as illustrated in GHR26 installation instructions. 3-Connect high voltage wiring as outlined in GHR26 installation instructions. 4-Connect gas piping as outlined in GHR26 installation instructions. Consult local codes for flexible connector installation restrictions on GHR26 furnace. 5-Connect venting as outlined in GHR26 installation instructions, Note -Mufflers can not be used in GHR26 installation. Check existing venting for size (diameter and length). It should meet the specifications as outlined in GHR26 installation instructions. If a concentric vent is used for GHR26-100 unit, it must be identified as catalog number 33K97. 6 -Connect heat exchanger condensate drain line as outlined in GHR26 unit installation instructions. Note -Coil drain line must not be connected to heat exchanger condensate drain line. ff lines were connected, debris from evaporator could affect heat exchanger operation. 7 -Continue with Unit Start-up Section as outlined in GHR26 installation instructions, Note -See GHR26 installation instructions for heat anticipation settings. Page 3 TYPICAL GHR26 INSTALLATION (LEFT SIDE DISCHARGE ONLY -INSTALLED POSITION SHOWN) S EXISTING REAR-MOST CABINET SCREW SUPPLY AIR OUTLET ADHESIVE BACKED FOAM TAPE REAR-MOST BLOWER _'_ I ADHESIVE BACKED FOAM TAPE DECK HOLE CONTROL ACCESS SUPPLY AIR TRANSITION INSTALLATION -RETURN AIR INLET (identify transition by its !7" x 20-3/8" BLOWER ACCESS PANEL 432mm x 518mm) plenum connection size) 1 -Apply foam tape as shown. 2 -Align transition holes with the I I I I DRAIN LINE ROUTING REAR BASE RAIL SET HOLE three rear-most cabinet holes. Return air transition holes will RETURN AIR TRANSITION INSTALLATION - not align in this position.) (identify transition by its 19-1/8" x 24" Cabinet extends 2-3/8 inches (486mm x 619mm) plenum connection beyond transition at front.) size) 3 -Secure transition to cabinet 1 -Apply foam tape as shown. with existing screws. In remaining hole use self-drilling self-tapping screw. DRAIN LINE ROUTING HOLE 2 -Align transition holes with three the rear-most cabinet holes. (Supply air transition holes will not align in this position) (Cabinet extends 2-3/8 inches beyond transition at front.) 3 -Secure transition to cabinet with existing screws. In remaining hole use self-drilling self4apping screw. BRACE HOLE"A" FRONT BASE RAIL SET / SECURING SCREWS SECURING SCREWS _" DETAIL B AIR TRANSITION VIEW A BASE RAILS INSTALLATION A -Assemble rails: BASE RAIL TO TRANSITION JOINT 1 -Orient two rails used to form front rail set as shown in view A. (Position drain line routing hole as shown.) 2 -Repeat for rear rail set. 3 -Position brace between front and rear rail sets as shown in main figure. 4 -Attach brace to rail sets with the four screws provided. B -Attach rail assemb]y to transitions and unit: 1 -Remove rear-most blower deck screw. 2 -Align rear rail hole "A'as shown in main figure with rear most blower deck hole. 3 -Secure rear rail set to unit and transitions. (See main figure and detail B) 4 -Repeat for front rail set using third blower deck hole from rear. FIGURE 2 Page 4 ...
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