Typical Horizontal Installation | Carrier 50HQP072-120 manual

LEGEND

BSP — Blower Service Panel

CAP — Control Access Panel

CBP — Control Box Panel

EAP — Expansion Valve Access Panel

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NOTES:

1.Access is required for all removable panels and installer should take care to comply with all building codes and allow adequate clearance.

2.Water inlet and outlet connections are available on either side of the unit. Plugs are shipped loose in a plastic bag tied to the water leg 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.

Fig. 2 — Typical Horizontal Installation

Step 3 — Locate Unit — The following guidelines should be considered when choosing a location for a WSHP:

• Units are for indoor use only.

of hanging rods to building structure is critical for safety. See Fig. 2. Rod attachments must be able to support the weight of the unit. See Table 1 for unit operating weights.

•Locate in areas where ambient temperatures are between 4.4 C and 37.8 C and relative humidity is no greater than

75%.

•Provide sufficient space for water, electrical and duct connections.

•Locate unit in an area that allows for easy access and removal of filter and access panels.

•Allow enough space for service personnel to perform maintenance.

•Provisions must be made for return air to freely enter the space if unit needs to be installed in a confined area such as a closet.

NOTE: Correct placement of the horizontal unit can play an important part in minimizing sound problems. Since duct- work is normally applied to these units, the unit can be placed so that the principal sound emission is outside the occupied space 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 attachment

Step 5 — Install Duct System — The duct system should 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 removed before operating unit.

SOUND ATTENUATION — To eliminate the transfer of vibration to the duct system, a flexible connector is recom- mended for both discharge and return air duct connections on metal duct systems. The supply and return plenums should in- clude internal duct liner of fiberglass or be made of duct board construction 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 and adversely affect the unit’s performance.

To reduce air noise, at least one 90-degree elbow could be included in the supply and return air ducts, provided system performance is not adversely impacted. The blower speed can be also changed in the field to reduce air noise or excessive air- flow, provided system performance is not adversely impacted.