Carrier WeatherMaker 48A020 Installation Instructions Manual

Also see for WeatherMaker 48A020: Installation and operating instructions Installation instructions

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Carrier WeatherMaker 48A020 Installation Instructions Manual Manual pdf 30 page image

30Step 11 — Position Power Exhaust/BarometricRelief Damper Hood — All units are shipped with thehoods folded inside the unit in a shipping position. For48A2,A3,A6,A7 units the hood must be tilted out once the unitis installed. On 48A4,A5,A8,A9 units (designed for horizontalsupply and return), the assemblies will have to be relocated tothe return ductwork. See Fig. 42 for dimensions and details.All electrical connections have been made and adjusted at thefactory. The power exhaust blowers and barometric reliefdampers are shipped assembled and tilted back into the unit forshipping. Brackets and extra screws are shipped in shrink wraparound the dampers. If ordered, each unit will have 4 (48A020-050 units) or 6 (48A060 units) power exhaust blowers andmotors or barometric relief dampers.1. Remove 9 screws holding each damper assembly inplace. See Fig. 43. Each damper assembly is secured with3 screws on each side and 3 screws along the bottom.Save screws.2. Pivot each damper assembly outward until edges ofdamper assembly rest against inside wall of unit.3. Secure each damper assembly to unit with 6 screwsacross top (3 screws provided) and bottom (3 screwsfrom Step 1) of damper.4. With screws saved from Step 1, install brackets on eachside of damper assembly.5. Remove tape from damper blades.CAUTIONBe careful when tilting blower assembly. Hoods and blow-ers are heavy and can cause injury if dropped.Fig. 42 — Power Exhaust Relocated to Side Return Duct(for CRPWREXH033A00, 034A00, 035A00, and 036A00)42.56”42” MIN.S/AR/AECONOMIZERHOODECONOMIZERHOODJ BOXPLENUM RATEDCABLE(FIELD SUPPLIED)12.94(UNITOPENING)“END #2”“END #1”ALTERNATELOCATION(END)23.28”TYP42.62TYPLOCATIONBAROMETRIC RELIEFOR POWER EXHAUST“SIDE #2”23.28”“SIDE #1”42.62”J BOXR/A S/ANOTES:1. Unless otherwise specified, all dimensions are to outside of part.2. Dimensions are in inches.3. On 48A4,A5,A8,A9 units, accessory barometric relief or power exhaust must be mounted in the field-supplied return ductwork.Fig. 43 — Barometric Relief Damper and Power Exhaust Mounting Details(for CRPWREXH033A00, 034A00, 035A00, and 036A00)a48-3808