Carrier PERFORMANCE 50VT-A Installation Instructions Manual

Also see for COMFORT 50VT-A: Owner's information manual Owner's information manual Installation instructions

Contents

Carrier PERFORMANCE 50VT-A Installation Instructions Manual Manual pdf 2 page image

2Recognize safety information. This is the safety--alert symbol .When you see this symbol on the unit and in instructions or manu-als, be alert to the potential for personal injury. Understand thesesignal words: DANGER, WARNING, and CAUTION. Thesewords are used with the safety--alert symbol. DANGER identifiesthe most serious hazards which will result in severe personal injuryor death. WARNING signifies hazards which could result in per-sonal injury or death. CAUTION is used to identify unsafe practic-es which may result in minor personal injury or product and prop-erty damage. NOTE is used to highlight suggestions which willresult in enhanced installation, reliability, or operation.ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Before installing or servicing system, always turn off mainpower to system and install lockout tag. There may bemore than one disconnect switch. Turn off accessory heaterpower switch if applicable.! WARNINGCUT HAZARDFailure to follow this caution may result in personal injury.When removing access panels (see Fig. 21) or performingmaintenance functions inside your unit, be aware of sharpsheet metal parts and screws. Although special care is takento reduce sharp edges to a minimum, be extremely carefulwhen handling parts or reaching into the unit.! CAUTIONINTRODUCTIONThe 50VT--A heat pump is fully self--contained and designed foroutdoor installation. (See Fig. 1) Standard units are shipped in ahorizontal--discharge configuration for installation on a groundlevel slab. Standard units can be converted to downflow (vertical)discharge configurations for rooftop applications.RECEIVING AND INSTALLATIONStep 1 — Check EquipmentIdentify UnitThe unit model number and serial number are stamped on the unitidentification plate. Check this information against shippingpapers.Inspect ShipmentInspect for shipping damage before removing packaging material.If unit appears to be damaged or is torn loose from its anchorage,have it examined by transportation inspectors before removal.Forward claim papers directly to transportation company.Manufacturer is not responsible for any damage incurred in transit.Check all items against shipping list. Immediately notify thenearest equipment distributor if any item is missing. To preventloss or damage, leave all parts in original packages untilinstallation.If the unit is to be mounted on a curb in a downflow application,review Step 5 to determine which method is to be used to removethe downflow panels before rigging and lifting into place. Thepanel removal process may require the unit to be on the ground.Step 2 — Provide Unit SupportRoof CurbInstall accessory roof curb in accordance with instructions shippedwith curb (See Fig. 4). Install insulation, cant strips, roofing, andflashing. Ductwork must be attached to curb.IMPORTANT: The gasketing of the unit to the roof curb is criticalfor a watertight seal. Install gasketing material supplied with theroof curb. Improperly applied gasketing also can result in air leaksand poor unit performance.Curb should be level to within 1/4 in. (6 mm) (See Fig. 7). This isnecessary for unit drain to function properly. Refer to accessoryroof curb installation instructions for additional information asrequired.Installation on older “G” series roof curbs.Two accessory kits are available to aid in installing a new “G”series unit on an old “G” roof curb.1. Accessory kit number CPADCURB001A00, (small chassis)and accessory kit number CPADCURB002A00, (largechassis) includes roof curb adapter and gaskets for theperimeter seal and duct openings. No additionalmodifications to the curb are required when using this kit.2. An alternative to the adapter curb is to modify the existingcurb by removing the outer horizontal flange and useaccessory kit number CPGSKTKIT001A00 which includesspacer blocks (for easy alignment to existing curb) andgaskets for the perimeter seal and duct openings. This kit isused when existing curb is modified by removing outerhorizontal flange.UNIT/STRUCTURAL DAMAGE HAZARDFailure to follow this caution may result in propertydamage.Ensure there is sufficient clearance for saw blade whencutting the outer horizontal flange of the roof curb so thereis no damage to the roof or flashing.! CAUTIONSlab MountPlace the unit on a solid, level concrete pad that is a minimum of 4in. (102 mm) thick with 2 in. (51 mm) above grade (See Fig. 8).The slab should extend approximately 2 in. (51 mm) beyond thecasing on all 4 sides of the unit. Do not secure the unit to the slabexcept when required by local codes.Step 3 — Provide ClearancesThe required minimum service clearances are shown in Fig. 2 and3. Adequate ventilation and outdoor air must be provided. Theoutdoor fan draws air through the outdoor coil and discharges itthrough the top fan grille. Be sure that the fan discharge does notrecirculate to the outdoor coil. Do not locate the unit in either acorner or under an overhead obstruction. The minimum clearanceunder a partial overhang (such as a normal house overhang) is 48in. (1219 mm) above the unit top. The maximum horizontalextension of a partial overhang must not exceed 48 in. (1219 mm).IMPORTANT: Do not restrict outdoor airflow. An air restrictionat either the outdoor--air inlet or the fan discharge may bedetrimental to compressor life.Do not place the unit where water, ice, or snow from an overhangor roof will damage or flood the unit. Do not install the unit oncarpeting or other combustible materials. Slab--mounted unitsshould be at least 4 in. (102 mm) above the highest expected waterand runoff levels. Do not use unit if it has been under water.50VT-- A