Carrier COMFORTLink PURON 48PM20 Installation Instructions Manual

Contents

Carrier COMFORTLink PURON 48PM20 Installation Instructions Manual Manual pdf 10 page image

10SEENOTESEENOTEAIR OUTAIR INHEATEXCHANGERAIR OUTECONOMIZERNOTE: Do not drill in this area. Damage to basepan may result in water leak.C06279Fig. 8 -- Air Distribution -- Concentric DuctStep 6 — Install Flue Hood and Inlet HoodFlue hood (smaller hood), inlet hood (larger hood), and screens areshipped inside the unit in the fan section. To install, remove theheat panel. The flue hood is attached to the heat section panel fromthe outside using the screws provided. (See Fig. 9.)The inlet hood is installed by inserting the hood through the backof the heat panel. Attach the hood by inserting the screws providedthrough the clearance holes in the heat panel and into the intakehood.Install the screens into both hoods using the screws and retainingnuts provided with the unit.Attach the cover of the observation hole on the intake hood andthen replace the heat panel onto the unit to complete theinstallation.NOTE: When properly installed, the flue hood will line up withthe combustion fan housing. (See Fig. 10.)Step 7 — Trap Condensate DrainSee Fig. 11 for drain location. One 3/4-in. half coupling is providedoutside unit evaporator section for condensate drain connection. Atrap at least 4-in. deep must be used. (See Fig. 12.)All units must have an external trap for condensate drainage. Installa trap at least 4--in. deep and protect against freeze-up. If drain lineis installed downstream from the external trap, pitch the line awayfrom the unit at 1 in. per 10 ft of run. Do not use a pipe size smallerthan the unit connection.FLUE HOODINLET HOODC06280Fig. 9 -- Flue and Inlet Hood LocationsMAIN BURNERSECTIONINDUCED-DRAFTMOTORCOMBUSTIONFAN HOUSINGHEATEXCHANGERSECTIONC06281Fig. 10 -- Combustion Fan Housing Location48PM20-- 28