Carrier 50RHE006-060 specifications 50RHE Units, Dimensions mm, 030,036, 042,048

Step 4 — Mounting the Unit — Horizontal units should be mounted using the factory-installed hangers. Proper attachment of hanging rods to building structure is critical for safety. See Fig. 2 and 5. Rod attachments must be able to sup- port the weight of the unit. See Table 1 for unit operating weights.

Step 5 — Duct System — Size the duct system to han- dle 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 include 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 unconditioned 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 also be changed in the field to reduce air noise or excessive air- flow, provided system performance is not adversely impacted.

EXISTING DUCT SYSTEM — If the unit is connected to existing ductwork, consider the following:

•Verify that the existing ducts have the proper capacity to handle the unit airflow. If the ductwork is too small, install larger ductwork.

•Check existing ductwork for leaks and repair as necessary.

NOTE: Local codes may require ventilation air to enter the space for proper indoor air quality. Hard-duct ventilation may be required for the ventilating air supply. If hard ducted venti- lation is not required, be sure that a proper air path is provided for ventilation air to unit to meet ventilation requirement of the space.

D

		Compressor
			Air Handler
C	A			E
		Section
			Section

B

50RHE UNITS		DIMENSIONS (mm)
	A	B	C	D	E
006-024	568	1095	619	1095	518
030,036	568	1349	619	1349	518
042,048	568	1577	619	1577	518
060	645	1806	695	1806	594

Fig. 5 — Horizontal Hanger Bracket

(Factory Installed)

Step 6 — Condensate Drain — Slope the unit to- ward the drain at a 6.5 mm per 30 cm pitch. See Fig. 6. If it is not possible to meet the required pitch, install a condensate pump at the unit to pump condensate to building drain.

Horizontal units are not internally trapped; therefore an ex- ternal trap is necessary. Install each unit with its own individual trap and means to flush or blowout the condensate drain line. Do not install units with a common trap or vent. For typical condensate connections see Fig. 7.

NOTE: Never use a pipe size smaller than the connection.

VENTING — Install a vent in the condensate line of any application that may allow dirt or air to collect in the line. Con- sider the following:

•Always install a vent where an application requires a long horizontal run.

•Always install a vent where large units are working against higher external static pressure and to allow proper drainage for multiple units connected to the same condensate main.

•Be sure to support the line where anticipated sagging from the condensate or when “double trapping” may occur.

•If condensate pump is present on unit, be sure drain con- nections have a check valve to prevent back flow of con- densate into other units.

65 mm Pitch for Drainage

Pitch Toward

Drain

Drain Connection

Fig. 6 — Horizontal Unit Pitch

NOTE: Trap should be deep enough to offset maximum unit static difference. A 102 mm trap is recommended.

Fig. 7 — Trap Condensate Drain

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