Carrier 50PSH, PSD006-070, PSV instruction manual Side Discharge, Back Discharge

	Supply Air
		Building
	Flexible	Loop
	Connection
		Water
Return		Out
Air		Water
		In	Balancing Valve
	Stainless steel		(field-installed
	braid hose		accessory)
	with integral
	“J” swivel
	(field-installed		Low Pressure
	accessory)
			Drop Water
Power
			Control Valve
Thermostat			(optional)
			(field-installed
Wiring			accessory)
		Ball Valve with optional
	Compressor	integral P/T plug
		(typical for supply and
	Access Panel
A50-7730		return piping) (field-Installed
		accessory)

NOTE: Ball valve with integral pressure temperature plug recommended.

Fig. 5 — Typical Vertical Installation — 50PSV Unit

FIELD CONVERSION OF DISCHARGE AIR — The dis- charge air of the 50PSH horizontal units can be converted between side and back discharge in the field. The conversion process is the same for right and left return configurations. See Fig. 7 and 8.

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

Water	Remove Screws
Connection End

Return Air

Side Discharge

Water

Connection End

Rotate

Return Air

Return

Air

Power

Thermostat

Wiring

Compressor

Access Panel

A50-7729

Flexible	Building
Connection	Loop
	Water	Water
	Out
Stainless		In
steel
braid hose
with		Balancing Valve
integral ”J”		(field-installed
swivel(field-		accessory)
installed		Low Pressure
accessory)		Drop Water
		Control Valve
		(optional)
		(field-installed
		accessory)
		Ball Valve with
Flexible		optional integral
		P/T plug (typical for
Connection
		supply and return

Supply Air	piping)(field-installed
	accessory)

	Move to Side
Water	Replace Screws
Connection End

Return Air

Drain

NOTE: Ball valve with integral pressure temperature plug recommended.

Fig. 6 — Typical Downflow Installation —

50PSD 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 39 F and 102 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.

NOTE: Correct placement of the horizontal unit can play an important part in minimizing sound problems. Since ductwork 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.

A50-6256

Back Discharge Discharge Air

Fig. 7 — Conversion Left Return,

Side Discharge to Back Discharge

Water

Connection End

Return Air

Supply

Duct

Side Discharge	Water
	Connection End

Return Air

Drain
Discharge Air	Back Discharge
	A50-6257

Fig. 8 — Conversion Right Return,

Side Discharge to Back Discharge

8