Carrier 50PCH specifications Side Discharge, Back Discharge

Supply Air	a50-6803ef
	Building
Flexible	Loop
Connection
	Water
	Out
	Water
	In	Balancing Valve
		(field installed
Field-supplied		and calibrated
stainless steel		accessory)
braid	hose
with integral		Low Pressure
“ J” swivel		Drop Water
Power		Control Valve
Thermostat		(optional)
		(field-installed
Wiring		accessory)
	Ball Valve with optional
Compressor	integral P/T plug
Access Panel	(typical for supply and
	return piping)

NOTE: Ball valve with integral pressure temperature plug recommended.

Fig. 4 — Typical Vertical Installation of 50PCV Unit

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

• Units are for indoor use only.
• Locate in areas where ambient temperatures are between
	40 F and 100 F and relative humidity is no greater than
	75%.
•	Provide sufficient space for water, electrical and duct
	connections.
•	Locate unit in an area that allows easy access and
	removal of filter and access panels.
•	Allow enough space for service personnel to perform
	maintenance.
• Return air must be able to freely enter the space if unit
	needs to be installed in a confined area such as a closet.
• Install the unit on a piece of rubber, neoprene or other
	mounting pad material for sound isolation. The pad
	should be at least 3/ in. [10 mm] to	1/	2	in. [13 mm] in
	8
	thickness. Extend the pad beyond all four edges of the
	unit.
•	Provide adequate clearance for filter replacement and
	drain pan cleaning. Do not block filter access with pip-
	ing, conduit or other materials. Refer to Fig. 1 and 3 for
	dimensional data.
• Provide access for fan and fan motor maintenance and
	for servicing the compressor and coils without removing
	the unit.
• Provide an unobstructed path to the unit within the closet
	or mechanical room. Space should be sufficient to allow
	removal of the unit, if necessary.
• In limited side access installations, pre-removal of the
	control box side mounting screws will allow control box
	removal for future servicing.
• Provide access to water valves and fittings and screw-
	driver access to the unit side panels, discharge collar and
	all electrical connections.
	NOTE: Correct placement of the horizontal unit can play an
	important part in minimizing sound problems. Since duct-

between side and back discharge in the field. The conversion process is the same for right and left return configurations. See Fig. 5 and 6.

NOTE: It is not possible to convert return air between left or right return models in the field due to refrigerant piping changes.

Preparation — The unit should be on the ground in a well lit area for conversion. Hung units should be taken down to ground level before converting.

Water	Remove Screws
Connection End

Return Air

Side Discharge

Water

Connection End

Rotate

Return Air

	Move to Side
Water	Replace Screws
Connection End

Return Air

Drain

Back Discharge Discharge Air

Fig. 5 — Conversion Left Return,

Side Discharge to Back Discharge

Water

Connection End

Return Air

Supply

Duct

Side Discharge	Water
	Connection End

Return Air

work is normally applied to these units, the unit can be

placed so that the principal sound emission is outside the oc-

cupied space in sound-critical applications. A fire damper

may be required by the local code if a fire wall is penetrated.

Drain

Discharge Air

Back Discharge

a50-6257ef

FIELD CONVERSION OF DISCHARGE AIR — The dis- charge air of the 50PCH horizontal units can be converted

Fig. 6 — Conversion Right Return, Side Discharge to Back Discharge

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