Carrier AQUAZONE 50HQP072-120 Installation And Service Instructions Manual

Contents

5Step 3 — Locate Unit — The following guidelinesshould be considered when choosing a location for a WSHP:• Units are for indoor use only.• Locate in areas where ambient temperatures are between4.4 C and 37.8 C and relative humidity is no greater than75%.• Provide sufficient space for water, electrical and ductconnections.• Locate unit in an area that allows for easy access andremoval of filter and access panels.• Allow enough space for service personnel to performmaintenance.• Provisions must be made for return air to freely enter thespace if unit needs to be installed in a confined area suchas a closet.NOTE: Correct placement of the horizontal unit can play animportant part in minimizing sound problems. Since duct-work is normally applied to these units, the unit can be placedso that the principal sound emission is outside the occupiedspace in sound-critical applications. A fire damper may be re-quired by the local code if a fire wall is penetrated.Step 4 — Mount Unit — Units should be mounted us-ing the factory-installed hangers. See Fig. 3. Proper attachmentof hanging rods to building structure is critical for safety. SeeFig. 2. Rod attachments must be able to support the weight ofthe unit. See Table 1 for unit operating weights.Step 5 — Install Duct System — The duct systemshould be sized to handle the design airflow quietly.NOTE: Depending on the unit, the fan wheel may have a ship-ping support installed at the factory. This must be removedbefore operating unit.SOUND ATTENUATION — To eliminate the transfer ofvibration to the duct system, a flexible connector is recom-mended for both discharge and return air duct connections onmetal duct systems. The supply and return plenums should in-clude internal duct liner of fiberglass or be made of duct boardconstruction to maximize sound attenuation of the blower.Installing the WSHP unit to uninsulated ductwork in an uncon-ditioned space is not recommended since it will sweat andadversely affect the unit’s performance.To reduce air noise, at least one 90-degree elbow could beincluded in the supply and return air ducts, provided systemperformance is not adversely impacted. The blower speed canbe also changed in the field to reduce air noise or excessive air-flow, provided system performance is not adversely impacted.Fig. 2 — Typical Horizontal InstallationLEGENDBSP — Blower Service PanelCAP — Control Access PanelCBP — Control Box PanelEAP — Expansion Valve Access PanelNOTES:1. Access is required for all removable panels and installer shouldtake care to comply with all building codes and allow adequateclearance.2. Water inlet and outlet connections are available on either side ofthe unit. Plugs are shipped loose in a plastic bag tied to the waterleg in front of the unit. Installer must plug unused connection.3. Condensate drain connection is on end opposite of compressor.4. Electrical access is available on either side of the front of the unit.5. Electrical box is on right side but can be field-converted to left.a50-8534