Carrier RVS Remove Screws, Side Discharge, Rotate, Move to Side, Back Discharge Discharge Air

Power

Thermostat Wiring

Supply Air

	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
		Control Valve
		(optional)
		(field-installed
		accessory)
	Ball Valve with optional
Compressor	integral P/T plug
Access Panel	(typical for supply and
	return piping)

conversion process is the same for right and left return configu- rations. See Fig. 11 and 12.

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.

Side to Back Discharge Conversion

1.	Remove screws to free the top and discharge panels. See
	Fig. 11.
2.	Remove the access panel and set aside.
3.	Lift the discharge panel from side of unit and rotate it to
	back using care not to damage blower wiring.
4.	Check blower wire routing and connections for undo
	tension or contact with sheet metal edges. Re-route if
	necessary.

NOTE: Ball valve with integral pressure temperature plug recommended.

Fig. 9 — Typical Vertical Installation —

50RVC,RVR,RVS Units

5.	Check refrigerant tubing for contact with other compo-
	nents. Adjust if necessary.
6.	Reinstall top panel using screws set aside in Step 1.

Power

Thermostat Wiring

Compressor Access Panel

Flexible	Building
Connection	Loop
	Water	Water
	Out
		In
		Balancing Valve
		(field-installed
		and calibrated
	Field-supplied	accessory)
	stainless steel	Low Pressure
	braid hose
	with integral	Drop Water
	“ J” swivel	Control Valve (optional)
		(field-installed
		accessory)

Ball Valve with optional integral P/T plug (typical for supply and return piping)

Flexible

Connection

Supply Air

NOTE: Location for some screws at bottom of discharge panel may have to be changed.

7.Manually spin fan wheel to check for obstructions. Adjust for any obstruction found.

8.Replace access panel.

Back to Side Discharge Conversion — Follow instructions above for Side to Back Discharge Conversion, noting the panels would be reversed.

Water	Remove Screws
Connection End

Return Air

NOTE: Ball valve with integral pressure temperature plug recommended.

Fig. 10 — Typical Downflow Installation —

50RDS Units

Step 3 — Unit Location — 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.

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 oc- cupied space in sound-critical applications. A fire damper may be required by the local code if a fire wall is penetrated.

FIELD CONVERSION OF DISCHARGE AIR — The dis- charge air of the 50RHC,RHR,RHS horizontal units can be converted between side and back discharge in the field. The

Side Discharge

Water

Connection End

Rotate

Return Air

	Move to Side
Water	Replace Screws
Connection End

Return Air

Drain

Back Discharge Discharge Air

Fig. 11 — Conversion Left Return, Side Discharge to Back Discharge

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