Carrier 50PCH User Manual

AQUAZONE™ 50PCH,PCV006-060 Compact High-Efficiency Water Source Heat Pumps

with PURON® Refrigerant (R-410A)

Installation, Start-Up, and

Service Instructions

	CONTENTS
		Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . .		. .1,2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		2-22
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . .		. . . 2
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . .		. . . 2
•	STORAGE
•	PROTECTION
•	INSPECT UNIT
Step 3 — Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . .		. . . 7
• FIELD CONVERSION OF DISCHARGE AIR
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . .		. . . 8
•	HORIZONTAL UNITS
•	VERTICAL UNITS
Step 5 — Check Duct System . . . . . . . . . . . . . . . . .		. . . 8
•	SOUND ATTENUATION
•	EXISTING DUCT SYSTEM
Step 6 — Install Condensate Drain . . . . . . . . . . . .		. . . 8
•	HORIZONTAL UNITS
•	VERTICAL UNITS
•	VENTING
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . .		. . . 9
•	WATER LOOP APPLICATIONS
•	GROUND LOOP APPLICATIONS
• INSTALLATION OF SUPPLY AND RETURN HOSE
	KIT
Step 8 — Wire Field Power Supply . . . . . . . . . . . .		. . 10
•	POWER CONNECTION
•	SUPPLY VOLTAGE
•	208-VOLT OPERATION
•	460-VOLT OPERATION
Step 9 — Wire Field Controls. . . . . . . . . . . . . . . . . .		. . 20
•	THERMOSTAT CONNECTIONS
•	WATER FREEZE PROTECTION
• AIR COIL FREEZE PROTECTION
•	ACCESSORY CONNECTIONS
•	WATER SOLENOID VALVES
•	WSHP OPEN WIRING
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22,23
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . 22
PSC Blower Speed Selection . . . . . . . . . . . . . . . .		. . 22
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . .		24,25
Complete C Control Jumper Settings. . . . . . . . .		. . 24
Complete C Control DIP Switches. . . . . . . . . . . .		. . 24
Deluxe D Control Jumper Settings . . . . . . . . . . .		. . 24
Deluxe D Control DIP Switches . . . . . . . . . . . . . .		. . 24
Deluxe D Control Accessory Relay
	Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 25
Water Valve (Slow Opening) . . . . . . . . . . . . . . . . .		. . 25
Outside Air Damper (OAD) . . . . . . . . . . . . . . . . . .		. . 25
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		25-33
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . 25
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . .		. . 26
Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . .		. . 26

Page

Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 30

Unit Start-Up with WSHP Open Controls . . . . . . . . 30

Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 32

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-36 Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Units with Aquazone Complete C Control . . . . . . . 33 Units with Aquazone Deluxe D Control . . . . . . . . . . 33 Units with WSHP Open Multiple Protocol. . . . . . . . 33

COMPLETE C AND DELUXE D BOARD

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-38

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

WSHP Open Test Mode. . . . . . . . . . . . . . . . . . . . . . . . . . 36

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Aquazone Deluxe D Control LED Indicators . . . . . 37

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-40

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Water Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 38

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Fan Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 38

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 39

Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 40

Replacing the WSHP Open Controller’s

Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 40-42 Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 WSHP Open Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 40

APPENDIX A — WSHP OPEN SCREEN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . 43-48

50PCH,PCV START-UP CHECKLIST . . . . . CL-1, CL-2

IMPORTANT: Read the entire instruction manual before starting installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500094-01

Printed in U.S.A.

Form 50PC-3SI

Pg 1

3-11

Replaces: 50PC-2SI

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and the National Electrical Code (NEC) for special installation requirements.

Understand the signal words — DANGER, WARNING, and CAUTION. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage.

Recognize safety information. This is the safety-alert symbol ( ). When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

WARNING

Electrical shock can cause personal injury or death. Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power if applicable.

GENERAL

This Installation and Start-Up Instructions literature is for Aquazone™ water source heat pump systems.

Water source heat pumps (WSHPs) are single-package horizontally and vertically mounted units with electronic controls designed for year-round cooling and heating. Aquazone WSHPs are available in the following unit configurations:

•PCH standard efficiency with horizontal airflow and right, left or back discharge

•PCV standard efficiency with vertical airflow and top discharge

IMPORTANT: The installation of water source heat pump units and all associated components, parts, and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

INSTALLATION

Step 1 — Check Jobsite — Installation, operation and maintenance instructions are provided with each unit. Before unit start-up, read all manuals and become familiar with the unit and its operation. Thoroughly check out the system before operation. Complete the inspections and instructions listed below to prepare a unit for installation. See Table 1 for unit physical data.

HORIZONTAL UNITS (50PCH) — Horizontal units are designed for indoor installation only. Be sure to allow adequate space around the unit for servicing. See Fig. 1 for overall unit dimensions. Refer to Fig. 2 for an illustration of a typical horizontal installation.

VERTICAL UNITS (50PCV) — Vertical units are designed for indoor installations. While vertical units are typically

installed in a floor-level closet or a small mechanical room, the unit access guidelines for these units are very similar to those described for horizontal units. See Fig. 3 for overall dimensions. Refer to Fig. 4 for an example of a typical vertical installation.

CAUTION

To avoid equipment damage, do not use these units as a source of heating or cooling during the construction process. The mechanical components and filters used in these units quickly become clogged with construction dirt and debris which may cause system damage.

Step 2 — Check Unit — Upon receipt of shipment at the jobsite, carefully check the shipment against the bill of lading. Make sure all units have been received. Inspect the carton or crating of each unit, and inspect each unit for damage. Ensure the shipping company makes proper notation of any shortages or damage on all copies of the freight bill. Concealed damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of shipment.

NOTE: It is the responsibility of the purchaser to file all necessary claims with the shipping company.

1.Verify unit is correct model for entering water temperature of job.

2.Be sure that the location chosen for unit installation provides ambient temperatures maintained above freezing. Well water applications are especially susceptible to freezing.

3.Be sure the installation location is isolated from sleeping areas, private offices and other acoustically sensitive spaces.

NOTE: A sound control accessory package may be used to help eliminate sound in sensitive spaces.

4.Check local codes to be sure a secondary drain pan is not required under the unit.

5.Be sure unit is mounted at a height sufficient to provide an adequate slope of the condensate lines. If an appropriate slope cannot be achieved, a field-supplied condensate pump may be required.

6.Provide sufficient space for duct connection.

7.Provide adequate clearance for filter replacement and drain pan cleaning. Do not allow piping, conduit, etc. to block filter access.

8.Provide sufficient access to allow maintenance and servicing of the fan and fan motor, compressor and coils. Removal of the entire unit from the closet should not be necessary.

9.Provide an unobstructed path to the unit within the closet or mechanical room. Space should be sufficient to allow removal of unit if necessary.

10.Provide ready access to water valves and fittings, and screwdriver access to unit side panels, discharge collar, and all electrical connections.

11.Where access to side panels is limited, pre-removal of the control box side mounting screws may be necessary for future servicing.

STORAGE — If the equipment is not needed immediately at the jobsite, it should be left in its shipping carton and stored in a clean, dry area of the building or in a warehouse. Units must be stored in an upright position at all times. If carton stacking is necessary, stack units a maximum of 3 high. Do not remove any equipment from its shipping package until it is needed for installation.

PROTECTION — Once the units are properly positioned on the jobsite, cover them with either a shipping carton, vinyl film,

2

or an equivalent protective covering. Cap open ends of pipes stored on the jobsite. This precaution is especially important in areas where painting, plastering, or spraying of fireproof material, etc. is not yet complete. Foreign material that accumulates within the units can prevent proper start-up and necessitate costly clean-up operations.

Before installing any of the system components, be sure to examine each pipe, fitting, and valve, and remove any dirt or foreign material found in or on these components.

CAUTION

DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life. Always move units in an upright position. Tilting units on their sides may cause equipment damage.

INSPECT UNIT — To prepare the unit for installation, complete the procedures listed below:

1.Compare the electrical data on the unit nameplate with ordering and shipping information to verify that the correct unit has been shipped.

2.Verify that the unit is the correct model for the entering water temperature of the job.

3.Do not remove the packaging until the unit is ready for installation.

4.Verify that the refrigerant tubing is free of kinks or dents, and that it does not touch other unit components.

5.Inspect all electrical connections. Be sure connections are clean and tight at the terminals.

6.Loosen compressor bolts until the compressor rides freely on springs. Remove shipping restraints.

7.Remove the four 1/4 in. shipping bolts from compressor support plate (two bolts on each side) to maximize vibration and sound alternation.

CAUTION

Failure to remove shipping brackets from spring-mounted compressors will cause excessive noise and could cause component failure due to added vibration.

8.Remove any blower support cardboard from inlet of the blower.

9.Locate and verify any accessory kit located in compressor section.

10.Remove any access panel screws that may be difficult to remove once unit is installed.

Table 1 — Physical Data — 50PCH,PCV Units

50PCH,PCV UNIT	006			009			012		015			018		024		030			036		042		048			060
COMPRESSOR (1 each)							Rotary												Scroll
REFRIGERANT TYPE														R-410A
Factory Charge (oz)	17			18.5			23		32			43		43		47			50		70		74			82
FAN MOTOR AND BLOWER
Fan Motor Type/Speeds														PSC/3
Fan Motor (hp)	1/25			1/10			1/10		1/6			1/6		1/4		3/4			1/2		3/4		3/4			1
Blower Wheel Size (Dia x W) (in.)	5 x 5						6 x 5		8 x 7					9 x 7					9 x 8				10 x 10			11 x 10
COAX VOLUME (gal.)	0.123			0.143			0.167		0.286			0.450		0.286		0.323			0.323		0.890		0.738			0.939
WATER CONNECTION SIZE FPT (in.)							1/2								3/4									1
HORIZONTAL
Air Coil Dimensions (H x W)(in.)				10 x 15								16 x 22							20 x 25				20 x 35
Standard Filter - (Qty)		(1) 10 x 18							(1) 16 x 25					(1) 18 x 25					(1) 20 x 28 or				(1) 20 x 24,
1 in. Throwaway																			(2) 20 x 14				(1) 20 x 14
Weight (lb)
Operating	103			105			114		153			158		174		182			203		218		263			278
Packaged	113			115			124		158			163		179		187			209		224		270			285
Corner Weight (lb)*
Left-Front	37			38			42		53			55		62		67			75		81		98			103
Right-Front	24			24			26		36			37		40		41			47		50		60			64
Left-Back	23			23			25		34			35		39		40			44		48		58			61
Right-Back	19			20			21		30			31		33		34			37		39		47			75
VERTICAL
Air Coil Dimensions (H x W)(in.)				10 x 15								20 x 17.25							24 x 17.75				24 x 28.25
Standard Filter - (Qty)		(1) 10 x 18										(1) 20 x 20							(1) 24 x 24				(1) 14 x 24,
1 in. Throwaway																							(1) 18 x 24
Weight (lb)
Operating	103			105			114		153			158		189		197			203		218		263			278
Packaged	113			115			124		158			163		194		202			209		224		270			285
LEGEND										*Front is located at control box end.
FPT — Female Pipe Thread										NOTES:
												1. All units have grommet compressor mountings, and 1/2-in. and
PSC — Permanent Split Capacitor
												3/4-in. electrical knockouts.

2. Maximum water working pressure is 500 psig.

3

																			LEFT RETURN																																																		LEGEND																																				RIGHT RETURN
2 FT [610 MM] SERVICE																										OPTIONAL 2 FT																																		BSP — Blower Service Panel
	ACCESS																					CSP							[610 MM]																															CAP — Control Access Panel																																																																								2 FT [610 MM] SERVICE
																													SERVICE
																																																												CSP — Compressor Service Panel																																																																						FRONT							ACCESS
							FRONT																						ACCESS
																																																												FPT — Female Pipe Thread																																																																															OPTIONAL 2 FT
																																																																																																																																											[610 MM]
																																																												POWER SUPPLY																																																																															SERVICE
																																		LEFT RETURN																																																																																																									ACCESS
																																																						3 / 4" [19.1 MM] KNOCKOUT
																																																																																											RIGHT RETURN
																																																						1 / 2"													1.1 [27.9 MM] G
																																																					[12.7 MM]																																																																														CSP
																																													3.3" KNOCKOUT																							K																F								3.3"
																																													[83.8 MM]																												2
																																																																						J																			[83.8 MM]
																																																			LOW VOLTAGE																					H
																																																			1 / 2" [12.7 MM]																																	E
																																																			KNOCKOUT																				CAP																D					0.7"
		RIGHT/STRAIGHT																																										3	0.7" [17.8 MM]																										1																		[17.8 MM]																																							LEFT/STRAIGHT
							DISCHARGE
																																																																																																																																DISCHARGE
																																							BACK CONDENSATE																																			A														CONDENSATE																	BACK
		NOTE: CHOOSE EITHER																																																																		FRONT-VIEW
																																		DISCHARGE 3 / 4" FPT																																																																																				NOTE: CHOOSE EITHER
																																																																																											3 / 4" FPT												DISCHARGE
		BACK OR STRAIGHT DISCHARGE																																																																																																																				BACK OR STRAIGHT DISCHARGE
																																														NOTE: BLOWER SERVICE PANEL REQUIRES 2 FT SERVICE ACCESS
																		O						N										SIDE																										UNIT HANGER DETAIL																																																	SIDE								N								P
									BSP																									COILAIR																				FRONT			036-042						47.1 [119.6]								22.2 [56.4]								18.0 [45.7]																														COILAIR						BLOWER																BSP
																																																									MODEL										U									V									W																				C
																			M																				C																		006-012 34.1 [86.6]														21.1 [53.6]									18.9 [42.9]																																			OUTLET										M
																						BLOWER																												V																																									W
a50-8695																						OUTLET																																			015-030						43.1 [109.5]								22.2 [56.4]									18.0 [45.7]
																																																									048-060						54.1 [137.4]								26.2 [66.5]									22.0 [55.9]																																												O
																			P
																							A																																																																																												A
																																																																							U
														LEFT RETURN BACK DISCHARGE																																																																																												RIGHT RETURN BACK DISCHARGE
																																																	N										O
																																																															BSP														L											N
																																														BLOWER																														BSP
																																														OUTLET													M																											BLOWER										M																								CSP
																																																																																						OUTLET
		FRONT																																																									L																																																																											FRONT
																							LEFT RETURN STRAIGHT DISCHARGE																																																													O											RIGHT RETURN STRAIGHT DISCHARGE
																																																									1.75 [44.5 MM]																																								AIR COIL
			T									S													Q																			AIR COIL																																																																							Q																		S				T
				C				R																																								CSP																																																																																								R
																																																															FRONT															C
																																																																											FRONT
																																						B																																																																							B
																													LEFT RETURN													LEFT VIEW -																																																							RIGHT RETURN RIGHT VIEW -
																																AIR COIL OPENING																												50PCH006-060 UNITS																																									AIR COIL OPENING
																																										WATER																																																				DISCHARGE CONNECTIONS																																					RETURN CONNECTION
		OVERALL CABINET																																																													ELECTRICAL KNOCKOUTS																																								DUCT FLANGE																													USING RETURN AIR
																																				CONNECTIONS
50PCH																																																																																																				( 0.10 in., 2.5 mm)																																						OPENING
UNIT																														1					2							3			4																				H											J										K																M										N																					Q						R
SIZE				A										B								C										Loop In										Loop Out												Size									1/2-in.										1/2-in.											3/4-in.
		Width										Depth									Height																																	(IPT)																																								L				Supply											Supply									O							P					Return									Return		S	T
																																				E							F			G																	Low											Low										Power														Height											Width																					Depth									Height
																																D
																																																														Voltage									Voltage													Supply
006-	in.	19.1										34.1									11.1									9.6					1.1							1.5			1.1									1/2									8.1								5.1											2.1										0.8					8.9											6.7								8.2							1.3							16.1									9.8		1.1	0.6
012	cm	48.5										86.6									28.2									24.3					2.7							3.8			2.7									1.3									20.6								13.0											5.4										1.9					22.7											17.0								13.3							3.3							41.0									25.0		2.7	1.5
015	in.	20.1										43.1									17.0									15.1					1.4							3.2			1.4									1/2									12.1								9.1											6.1										2.6					13.3											9.9								4.1							1.3							23.0									15.0		1.1	1.0
	cm	51.1										109.5									43.2									38.4					3.4							8.1			3.5									1.3									30.8								23.2											15.6										6.6					33.8											25.1								10.5							3.3							58.4									38.1		2.8	2.5
018	in.	20.1										43.1									17.0									15.1					1.4							4.1			1.4									1/2									12.1								9.1											6.1										2.6					13.3											9.9								4.1							1.3							23.0									15.0		1.1	1.0
	cm	51.1										109.5									43.2									38.4					3.4							10.4			3.5									1.3									30.8								23.2											15.6										6.6					33.8											25.1								10.5							3.3							58.4									38.1		2.8	2.5
024	in.	20.1										43.1									18.3									15.1					1.4							4.4			1.4									3/4									12.1								9.1											6.1										2.6					13.3											9.9								4.1							1.3							23.0									16.3		1.1	1.0
	cm	51.1										109.5									46.5									38.4					3.4							11.3			3.5									1.9									30.8								23.2											15.6										6.6					33.8											25.1								10.5							3.3							58.4									41.4		2.8	2.5
030	in.	20.1										43.1									18.3									15.1					1.4							3.1			1.4									3/4									12.1								9.1											6.1										2.6					13.3											9.9								4.1							1.3							23.0									16.3		1.1	1.0
	cm	51.1										109.5									46.5									38.4					3.4							7.8			3.5									1.9									30.8								23.2											15.6										6.6					33.8											25.1								10.5							3.3							58.4									41.4		2.8	2.5
036	in.	20.1										47.1									21.0									15.1					1.4							5.3			1.4									3/4									16.1								13.1											10.1										2.5					16.1											11.0								3.0							2.5							25.9									19.0		1.1	1.0
	cm	51.1										119.6									53.3									38.4					3.4							13.4			3.5									1.9									41.0								33.3											25.7										6.3					40.9											27.9								7.7							6.4							65.8									48.3		2.8	2.5
042	in.	20.1										47.1									21.0									15.1					1.4							4.4			1.4									3/4									16.1								13.1											10.1										2.5					16.1											11.0								3.0							2.5							25.9									19.0		1.1	1.0
	cm	51.1										119.6									53.3									38.4					3.4							11.3			3.5									1.9									41.0								33.3											25.7										6.3					40.9											27.9								7.7							6.4							65.8									48.3		2.8	2.5
048	in.	24.1										54.1									21.0									15.1					1.4							4.4			1.4									1									16.1								13.1											10.1										3.7					16.1											13.7								4.1							1.3							35.9									19.0		1.1	1.0
	cm	61.2										137.4									53.3									38.4					3.4							11.1			3.5									2.5									41.0								33.3											25.7										9.5					41.0											34.8								10.3							3.2							91.2									48.3		2.8	2.5
060	in.	24.1										54.1									21.0									15.1					1.4							3.8			1.4									1									16.1								13.1											10.1										1.7					18.1											13.7								4.1							1.3							35.9									19.0		1.1	1.0
	cm	61.2										137.4									53.3									38.4					3.4							9.7			3.5									2.5									41.0								33.3											25.7										4.4					46.0											34.8								10.3							3.2							91.2									48.3		2.8	2.5

NOTES:

1.While clear access to all removable panels is not required, installer should take care to comply with all building codes and allow adequate clearance for future field service.

2.Horizontal units shipped with filter bracket only. This bracket should be removed for return duct connection.

3.Discharge flange and hanger brackets are factory installed.

4.Condensate is 3/4-in. (19.1 mm) FPT copper.

5.Blower service panel requires 2 ft (610 mm) service access.

6.Blower service access is through back panel on left or right discharge units or through panel opposite air coil on back discharge units.

Fig. 1 — 50PCH Unit Dimensions

4

Field-supplied transition to minimize pressure loss

Supply Air

		Flexible
	Insulated supply duct with	Connection
	at least one 90 degree elbow	Accessory
	to reduce air noise
		Electric Heat
	(field supplied)
		(if applicable)

		Return Loop
	3/8" threaded rods	Supply Loop
	(by others)

Water In

Filter Access

				Water Out
Return Air
(Ductwork
not shown)
		Thermostat
Power Wiring				Wiring			Balancing Valve (Field
				Accessory
							installed and calibrated
				stainless steel			accessory)
				braid hose
				with integral			Low Pressure Drop Water
				“J” swivel			Control Valve (optional) or
							(field-installed accessory)
Unit Power

Unit Power	Water Out
Disconnect	Water In

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

3/8" Threaded Rod (by others)

Vibration Isolator (white compressor end and red blower end)

Washer (by others)

Double Hex Nuts

(by others)

Integral hanger support- pre-attached in factory

a50-7842ef

UNIT HANGER ISOLATION DETAIL

Fig. 2 — Typical Installation — 50PCH Units

5

	P	N
O
Q	AIR COIL AND FRONT SIDE

TOP VIEW-FRONT RETURN

	P	N
O	FRONT
Q	AIR COIL SIDE

TOP VIEW-RIGHT RETURN

LEGEND

ASP — Alternate Service Panel

BSP — Blower Service Panel

CAP — Control Access Panel

CSP — Compressor Service Panel

FPT — Female Pipe Thread

HV — High Voltage

LV — Low Voltage

	B
N	P
		FRONT	O
			A
	AIR COIL SIDE		M

TOP VIEW-LEFT RETURN

FIELD INSTALLED	ACCESS PANELS
DISCHARGE FLANGE
STANDARD FILTER BRACKET

AIR COIL
BSP
	ASP
	OPTIONAL
	2 FT [610 MM]
	SERVICE
CSP	ACCESS
	LEFT RTN
CAP	(RIGHT RTN
	OPPOSITE
	SIDE)

R	S	S	R		ISOMETRIC
			2 FT [610 MM]
				SERVICE		VIEW
U		U							1.00 [25.4 MM]
	AIR COIL		AIR COIL
T		T	a50-8696		BSP
C		C					G
									CONDENSATE
			POWER SUPPLY
									3/4" FPT
			3/4" [19.1 MM] HV
			KNOCKOUT			2
			LOW VOLTAGE		CAP
			1/2" [12.7 MM] LV
			KNOCKOUT
	CSP	CSP	LOW VOLTAGE			3			F
			1/2" [12.7 MM] LV		L
			KNOCKOUT		K			I
FRONT	BACK	BACK	FRONT						H
				CSP	J
						1
								D
RIGHT RETURN RIGHT VIEW		LEFT RETURN LEFT VIEW					E
	- AIR COIL OPENING	- AIR COIL OPENING			FRONT-VIEW

50PCV006-060 UNITS

																		DISCHARGE CONNECTION					RETURN CONNECTION
			OVERALL CABINET					WATER CONNECTIONS							ELECTRICAL KNOCKOUTS			DUCT FLANGE INSTALLED					USING RETURN AIR
50PCV																			( 0.10 in., 2.5 mm)					OPENING
															J	K	L
UNIT							1		2			3			1/2-in.	1/2-in.	3/4-in.			O	P			S	T
SIZE			A	B	C									Size	(1.3 cm)	(1.3 cm)	(1.3 cm)
			Width	Depth	Height									(IPT)				M	N	Supply	Supply	Q	R	Return	Return	U
						D	E		F	G					Low	Low	Power			Width	Depth			Depth	Height
											H		I
						Loop In			Loop Out						Voltage	Voltage	Supply
006-		in.	19.1	19.1	22.0	1.4	1.6		9.5	1.6	6.1		1.6	1/2	2.9	5.9	8.9	8.9	5.1	9.0	9.0	5.5	2.1	16.2	9.9	0.7
012		cm	48.5	48.5	55.9	3.6	4.1		24.1	4.3	15.6		4.1	1.3	7.3	14.9	22.5	22.7	12.9	22.9	22.9	14.0	5.3	41.1	25.1	1.9
015		in.	21.5	21.5	39.0	1.9	1.4		13.8	1.4	8.1		1.4	1/2	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.3	2.3	18.3	20.9	0.7
		cm	54.6	54.6	99.1	4.8	3.6		35.1	3.6	20.6		3.6	1.3	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.6	5.8	46.5	53.1	1.9
018		in.	21.5	21.5	39.0	1.9	1.4		12.9	1.4	8.1		1.4	1/2	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.3	2.3	18.3	20.9	0.7
		cm	54.6	54.6	99.1	4.8	3.6		32.8	3.6	20.6		3.6	1.3	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.6	5.8	46.5	53.1	1.9
024		in.	21.5	21.5	40.0	1.9	1.4		13.8	1.4	8.1		1.4	3/4	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.3	2.3	18.3	20.9	0.7
		cm	54.6	54.6	101.6	4.8	3.6		35.1	3.6	20.6		3.6	1.9	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.6	5.8	46.5	53.1	1.9
030		in.	21.5	21.5	40.0	1.9	1.4		15.2	1.4	8.1		1.4	3/4	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.3	2.3	18.3	20.9	0.7
		cm	54.6	54.6	101.6	4.8	3.6		38.6	3.6	20.6		3.6	1.9	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.6	5.8	46.5	53.1	1.9
036		in.	21.5	26.0	45.0	1.9	1.4		15.7	1.4	8.1		1.4	3/4	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.1	2.3	22.8	23.9	0.7
		cm	54.6	66.0	114.3	4.8	3.6		39.9	3.6	20.6		3.6	1.9	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.1	5.8	57.9	60.7	1.9
042		in.	21.5	26.0	45.0	1.9	1.4		16.6	1.4	8.1		1.4	3/4	4.1	7.1	10.1	6.4	3.8	14.0	14.0	5.1	2.3	22.8	23.9	0.7
		cm	54.6	66.0	114.3	4.8	3.6		42.0	3.6	20.6		3.6	1.9	10.5	18.1	25.7	16.1	9.5	35.6	35.6	13.1	5.8	57.9	60.7	1.9
048		in.	24.0	32.5	46.0	1.9	1.4		16.6	1.4	8.1		1.4	1	4.1	7.1	10.1	6.9	7.3	16.0	18.0	5.1	2.3	29.3	22.5	0.7
		cm	61.0	82.6	116.8	4.8	3.6		42.2	3.6	20.6		3.6	2.5	10.5	18.1	25.7	17.4	18.4	40.6	45.7	13.1	5.8	74.4	57.0	1.9
060		in.	24.0	32.5	46.0	1.9	1.4		16.7	1.4	8.1		1.4	1	4.1	7.1	10.1	6.9	7.3	16.0	18.0	5.1	2.3	29.3	22.5	0.7
		cm	61.0	82.6	116.8	4.8	3.6		42.4	3.6	20.6		3.6	2.5	10.5	18.1	25.7	17.4	18.4	40.6	45.7	13.1	5.8	74.4	57.0	1.9

NOTES:

1.Shaded areas are recommended service areas. Installer should take care to comply with all building codes and allow adequate clearance for future field service.

2.Front and side access is preferred for service access. However, all components may be serviced from the front access panel if side access is not available except on 50PCV009030 with front return.

3.Discharge flange is field installed.

4.Condensate is 3/4 in. (19.1 mm) FPT.

5.Units shipped with filter rails. These rails should be removed for return duct connection. See WSHP Accessory Price Page for accessory air filter frame with duct collar.

Fig. 3 — 50PCV Unit Dimensions

6

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 3/8 in. [10 mm] to 1/2 in. [13 mm] in 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 piping, 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 screwdriver 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 ductwork 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 required by the local code if a fire wall is penetrated.

FIELD CONVERSION OF DISCHARGE AIR — The discharge air of the 50PCH 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. 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

Drain

a50-6257ef

Back Discharge

Discharge Air

Fig. 6 — Conversion Right Return,

Side Discharge to Back Discharge

7

Side to Back Discharge Conversion

1.Remove screws to free the top and discharge panels. See Fig. 5.

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 undue tension or contact with sheet metal edges. Re-route if necessary.

5.Check refrigerant tubing for contact with other components. Adjust if necessary.

6.Reinstall top panel using screws set aside in Step 1.

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.

Step 4 — Mount the Unit

HORIZONTAL UNITS (50PCH) —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 7. Rod attachments must be able to support the weight of the unit. See Table 1 for unit operating weights.

a50-8489

	COMPRESSOR	AIR HANDLER
	SECTION	SECTION

Fig. 7 — Horizontal Hanger Bracket

(Factory Installed)

VERTICAL UNITS (50PCV) — Vertical units are available in left or right return air configurations. See Fig. 3. Mount the unit on a vibration absorption pad slightly larger than the entire base to minimize vibration transmission. It is not necessary to mount the unit on the floor. See Fig. 8.

a50-6259ef

Vibration

Absorption

Pad

Fig. 8 — 50PCV Unit Mounted with

Vibration Absorption Pad

NOTE: Some codes require the use of a secondary drain pan under vertical units. Check local codes for more information.

Step 5 — Check Duct System — Size the duct system to handle the design airflow quietly.

NOTE: Depending on the unit, the fan wheel may have a shipping 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 recommended 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 airflow, 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 ventilation is not required, be sure that a proper air path is provided for ventilation air to unit to meet ventilation requirement of the space.

Step 6 — Install Condensate Drain

HORIZONTAL UNITS (50PCH) — Slope the unit toward the drain at a 1/4 in. drop at drain end. See Fig. 9. If it is not possible to meet the required pitch, install a condensate pump at the unit to pump condensate to building drain.

1/4” Pitch for Drainage

a50-6260ef	Pitch Toward
	Drain

Drain Connection

Fig. 9 — Horizontal Unit Pitch

Horizontal units are not internally trapped, therefore an external trap is necessary. Install each unit with its own individual trap and means to flush or blow out the condensate drain line. Do not install units with a common trap or vent. For typical condensate connections see Fig. 10.

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

VERTICAL UNITS (50PCV) — Each unit uses a condensate hose inside all cabinets as a trapping loop, therefore an external trap is not necessary and should not be used. See Fig. 11.

8

a50-6261tf

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.

Fig. 10 — Trap Condensate Drain

3/4” Copper FPT/PVC		3/4” PVC
		Vent
a50-6262ef	1/2”	1/4” per foot
		slope to drain
Water		1/2”
Connections		Alternate
		Condensate
		Location

NOTE: Unit does not need to be sloped toward drain.

Fig. 11 — Vertical Condensate Connection

Each unit must be installed with its own individual vent and means to flush or blow out the condensate drain line. Do not install units with a common trap or vent.

VENTING — Install a vent in the condensate line of any application that may allow dirt or air to collect in the line. Consider 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 connections have a check valve to prevent back flow of condensate into other units.

Step 7 — Pipe Connections — Depending on the application, there are 3 types of WSHP piping systems to choose from: water loop, ground-water and ground loop. Refer to Piping Section of Carrier System Design Manual for additional information.

All WSHP units use low temperature soldered female pipe thread fittings for water connections to prevent annealing and out-of-round leak problems which are typically associated with high temperature brazed connections. Refer to Table 1 for connection sizes. When making piping connections, consider the following:

•Use a backup wrench when making screw connections to unit to prevent internal damage to piping.

•Insulation may be required on piping to avoid condensation in the case where fluid in loop piping operates at temperatures below dew point of adjacent air.

•Piping systems that contain steel pipes or fittings may be subject to galvanic corrosion. Dielectric fittings may be used to isolate the steel parts of the system to avoid galvanic corrosion.

WATER LOOP APPLICATIONS — Water loop applications usually include a number of units plumbed to a common piping system. Maintenance to any of these units can introduce air into the piping system. Therefore, air elimination equipment comprises a major portion of the mechanical room plumbing.

The flow rate is usually set between 2.25 and 3 gpm per ton of cooling capacity. For proper maintenance and servicing, pressure-temperature (P/T) ports are necessary for temperature and flow verification.

In addition to complying with any applicable codes, consider the following for system piping:

•Piping systems using water temperatures below 50 F require 1/2-in. closed cell insulation on all piping surfaces to eliminate condensation.

•Avoid all plastic to metal threaded fittings due to the potential to leak. Use a flange fitted substitute.

•Teflon tape thread sealant is recommended to minimize internal fouling of the heat exchanger.

•Use backup wrench. Do not overtighten connections.

•Route piping to avoid service access areas to unit.

•Flush the piping system prior to operation to remove dirt and foreign materials from the system.

GROUND-LOOP APPLICATIONS — Temperatures between 25 and 110 F and a cooling capacity of 2.25 to 3 gpm of flow per ton is recommended. In addition to complying with any applicable codes, consider the following for system piping:

•Limit piping materials to only polyethylene fusion in the buried sections of the loop.

•Do not use galvanized or steel fittings at any time due to corrosion.

•Avoid all plastic to metal threaded fittings due to the potential to leak. Use a flange fitted substitute.

•Do not overtighten connections.

•Route piping to avoid service access areas to unit.

•Use pressure-temperature (P/T) plugs to measure flow of pressure drop.

INSTALLATION OF SUPPLY AND RETURN HOSE KIT — Follow these piping guidelines.

1.Install a drain valve at the base of each supply and return riser to facilitate system flushing.

2.Install shutoff/balancing valves and unions at each unit to permit unit removal for servicing.

3.Place strainers at the inlet of each system circulating pump.

4.Select the proper hose length to allow slack between connection points. Hoses may vary in length by +2% to –4% under pressure.

5.Refer to Table 2. Do not exceed the minimum bend radius for the hose selected. Exceeding the minimum bend radius may cause the hose to collapse, which reduces water flow rate. Install an angle adapter to avoid sharp bends in the hose when the radius falls below the required minimum.

NOTE: Piping must comply with all applicable codes.

Table 2 — Metal Hose Minimum Bend Radii

HOSE DIAMETER (in.)	MINIMUM BEND RADII (in.)
1/2	21/2
3/4	4
1	51/2

9

Insulation is not required on loop water piping except where the piping runs through unheated areas or outside the building or when the loop water temperature is below the minimum expected dew point of the pipe ambient. Insulation is required if loop water temperature drops below the dew point.

IMPORTANT: Do not bend or kink supply lines or hoses.

Pipe joint compound is not necessary when Teflon* threaded tape is pre-applied to hose assemblies or when flared-end connections are used. If pipe joint compound is preferred, use compound only in small amounts on the male pipe threads of the fitting adapters. Prevent sealant from reaching the flared surfaces of the joint.

NOTE: When anti-freeze is used in the loop, assure that it is compatible with Teflon tape or pipe joint compound employed.

Maximum allowable torque for brass fittings is 30 ft-lb. If a torque wrench is not available, tighten finger-tight plus one quarter turn. Tighten steel fittings as necessary.

Optional pressure-rated hose assemblies designed specifically for use with Carrier units are available. Similar hoses can be obtained from alternate suppliers. Supply and return hoses are fitted with swivel-joint fittings at one end to prevent kinking during installation.

CAUTION

Backup wrench is required when tightening water connections to prevent water line damage. Failure to use a backup wrench could result in equipment damage.

Refer to Fig. 12 for an illustration of a supply/return hose kit. Male adapters secure hose assemblies to the unit and risers. Install hose assemblies properly and check them regularly to avoid system failure and reduced service life.

A50-7734							Swivel		Brass
							Brass
						Rib Crimped	Fitting		Fitting

Length

(2 ft Length Standard)

MPT

Fig. 12 — Supply/Return Hose Kit

Step 8 — Wire Field Power Supply

WARNING

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation.

CAUTION

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors. Failure to follow this safety precaution could lead to equipment damage.

All field installed wiring, including the electrical ground, MUST comply with the National Electrical Code (NEC) as well as applicable local codes. In addition, all field wiring must conform to the Class II temperature limitations described in the NEC.

*Registered trademark of E. I. du Pont de Nemours and Company.

Refer to unit wiring diagrams Fig. 13-20 for a schematic of the field connections, which must be made by the installing (or electrical) contractor. Refer to Table 3 for fuse sizes.

Consult the unit wiring diagram located on the inside of the compressor access panel to ensure proper electrical hookup. The installing (or electrical) contractor must make the field connections when using field-supplied disconnect.

Operating voltage must be the same voltage and phase as shown in Table 3.

Make all final electrical connections with a length of flexible conduit to minimize vibration and sound transmission to the building.

POWER CONNECTION — Make line voltage connection by connecting the incoming line voltage wires to the L side of the CC terminal as shown in Fig. 21. See Table 3 for correct wire and maximum overcurrent protection sizing.

SUPPLY VOLTAGE — Operating voltage to unit must be within voltage range indicated on unit nameplate.

On 3-phase units, voltages under load between phases must be balanced within 2%. Use the following formula to determine the percentage voltage imbalance:

% Voltage Imbalance

= 100 x	max voltage deviation from average voltage
	average voltage

Example: Supply voltage is 460-3-60.

AB = 452 volts BC = 464 volts AC = 455 volts

Average Voltage = 452 + 464 + 455 3

= 1371 3

= 457 Determine maximum deviation from average voltage:

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v. Determine percent voltage imbalance.

% Voltage Imbalance =	100 x		7
			457
=	1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

NOTE: If more than 2% voltage imbalance is present, contact your local electric utility.

208-VOLT OPERATION — All 208-230 volt units are factory wired for 208 volts. The transformers may be switched to 230-volt operation by switching the red (208 volt) wire with the orange (230 volt) wire at the L1 terminal.

460-VOLT OPERATION — Units using 460-v and internal secondary pump will require a neutral wire from the supply side in order to feed accessory with 265-v.

10

Complete C

11

LEGEND

AL

— Alarm Relay Contacts

LOC

— Loss of Charge Pressure Switch

Relay/Contactor Coil

BM

— Blower Motor

MV

— Motorized Valve

BMC

— Blower Motor Capacitor

MVES

— Motorized Valve End Switch

BR

— Blower Relay

NEC

— National Electrical Code

Condensate Pan

CAP

— Compressor Capacitor

P1

— Field Wiring Terminal Block

CB

— Circuit Breaker

PSC

— Permanent Split Capacitor

Solenoid Coil

CC

— Compressor Contactor

RV

— Reversing Valve Coil

a50-8490

TRANS

— Transformer

Temperature Switch

CO

— Sensor, Condensate Overflow

FP1

— Sensor, Low Temperature Protection Water Coil

TXV

— Thermostatic Expansion Valve

Thermistor

FP2

— Sensor, Low Temperature Protection Air Coil

Field Line Voltage Wiring

HP

— High-Pressure Switch

Field Low Voltage Wiring

Ground

HPWS — High-Pressure Water Switch

Printed Circuit Trace

HWTS

— High Leaving Water Temperature Switch

Wire Nut

JW1

— Jumper, Alarm

Optional Wiring

*Optional.

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer for 208/230 v will be connected for 208 v operation. For 230 v operation, switch RED wire to ORG wire. Insulate open end of RED lead. Transformer is energy limiting or may have circuit breaker.

4.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

5.Typical heat pump thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Wire “Y” from thermostat to “Y” Complete C when a motorized valve is not used. “O” terminal is not used in cooling only applications. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.

6.24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and for anti-freeze solutions, cut JW3 jumper.

7.Transformer secondary ground via green wire with yellow stripe from “C” terminal to control box.

8.Hot water generator pump only in models with hot water generation and internal pump option.

9.For auxiliary staging options, consult electric heat installation manual.

10.Fan motors factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed trap “M” and connect to “H” for high speed or “L” for low speed.

11.Aquastat is with unit and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.

Fig. 13 — 50PCH,PCV Units with Complete C Controller, Single-Phase

12

Deluxe D

LEGEND

AL

— Alarm Relay Contacts

LOC

— Loss of Charge Pressure Switch

Relay/Contactor Coil

BM

— Blower Motor

MV

— Motorized Valve

BMC

— Blower Motor Capacitor

MVES

— Motorized Valve End Switch

CB

— Circuit Breaker

NEC

— National Electrical Code

Condensate Pan

CC

— Compressor Contactor

P1

— Field Wiring Terminal Block

CO

— Sensor, Condensate Overflow

RVS

— Reversing Valve Solenoid

Solenoid Coil

FP1

— Sensor, Low Temperature Protection Water Coil

TRANS

— Transformer

FP2

— Sensor, Low Temperature Protection Air Coil

TXV

— Thermostatic Expansion Valve

Thermistor

HP

— High-Pressure Switch

Field Line Voltage Wiring

HPWS

— High-Pressure Water Switch

Ground

Field Low Voltage Wiring

HWTS

— High Leaving Water Temperature Switch

JW1

— Jumper, Alarm

Printed Circuit Trace

Wire Nut

*Optional.

Optional Wiring

NOTES:

1.Compressor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer is wired to 208-v RED lead for 208-3-60 units. For 230-3-60, switch RED and ORG leads at L1 and insulate RED lead. Transformer is energy limiting or may have circuit breaker.

4.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

5.Refer to microprocessor control, LON, or thermostat installation instructions for wiring to the unit. Wire “Y” from thermostat to “Y1” Deluxe D

a50-8491

when motorized valve is not used. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage. Heat/cool thermostats not compatible with motorized water valve.

6.24-v alarm signal shown. For dry alarm contact, cut JW4 jumper and dry contact will be available between AL1 and AL2.

7.Transformer secondary ground via green wire with yellow stripe from “C” terminal to control box.

8.Blower motor is factory wired for medium and high speeds. For any other combination of speeds, attach black wire to the higher of the two desired speed taps and the blue wire to the lower of the two desired speed taps.

Fig. 14 — 50PCH,PCV Units with Deluxe D Controller, Three-Phase (208/230 V)

Deluxe D

13

LEGEND

AL

— Alarm Relay Contacts

LOC

— Loss of Charge Pressure Switch

Relay/Contactor Coil

BM

— Blower Motor

MV

— Motorized Valve

BMC

— Blower Motor Capacitor

MVES

— Motorized Valve End Switch

BR

— Blower Relay

NEC

— National Electrical Code

Condensate Pan

CB

— Circuit Breaker

P1

— Field Wiring Terminal Block

CC

— Compressor Contactor

PB

— Power Block

Solenoid Coil

CO

— Sensor, Condensate Overflow

RVS

— Reversing Valve Solenoid

FP1

— Sensor, Low Temperature Protection Water Coil

TRANS

— Transformer

Thermistor

FP2

— Sensor, Low Temperature Protection Air Coil

TXV

— Thermostatic Expansion Valve

HP

— High-Pressure Switch

Field Line Voltage Wiring

Ground

HPWS

— High-Pressure Water Switch

Field Low Voltage Wiring

Wire Nut

a50-8492

JW1

— Clippable Field Selection Jumper

Printed Circuit Trace

*Optional.

Optional Wiring

NOTES:

6.

24-v alarm signal shown. For dry alarm contact, cut JW4 jumper and dry

1. Compressor thermally protected internally.

contact will be available between AL1 and AL2.

2. All wiring to the unit must comply with NEC and local codes.

7.

Transformer secondary ground via green wire with yellow stripe from “C”

3. Transformer is wired to 460-v BLK/RED lead for 460-3-60 units or 575-v

terminal to control box.

GRY lead for 575-3-60 units. Transformer is energy limiting or may have

8.

Blower motor is factory wired for medium and high speeds. For any

circuit breaker.

other combination of speeds, attach black wire to the higher of the two

4. FP1 thermistor provides low temperature protection for water. When

desired speed taps at the motor. Attach the blue wire to the lower of the

using antifreeze solutions, cut JW3 jumper.

two desired speed taps.

5. Refer to microprocessor control, LON, or thermostat installation instruc-

9.

Blower motor is factory wired for high and low speeds. No other combi-

tions for wiring to the unit. Wire “Y” from thermostat to “Y1” Deluxe D

nation of speeds is available.

when motorized valve is not used. Thermostat wiring must be Class 1

10.

The 460-v units using an internal secondary pump will require a neutral

and voltage rating equal to or greater than unit supply voltage. Heat/cool

wire from the supply side in order to feed the accessory with 265-v.

thermostats not compatible with motorized water valve.

Fig. 15 — 50PCH,PCV Units with Deluxe D Controller, Three-Phase (460 V)

a50-8493

Complete C

14

LEGEND

AL

— Alarm Relay Contacts

P1

— Field Wiring Terminal Block

BM

— Blower Motor

RVS

— Reversing Valve Solenoid

Thermistor

BMC

— Blower Motor Capacitor

TRANS

— Transformer

Ground

BR

— Blower Relay

TXV

— Thermostatic Expansion Valve

CB

— Circuit Breaker

Field Line Voltage Wiring

Wire Nut

CC

— Compressor Contactor

Field Low Voltage Wiring

CO

— Sensor, Condensate Overflow

Relay Contacts - N.C.

FP1

— Sensor, Low Temperature Protection, Water Coil

Printed Circuit Trace

FP2

— Sensor, Low Temperature Protection, Air Coil

Optional Wiring

Relay Contacts - N.O.

HP

— High-Pressure Switch

HPWS — High-Pressure Water Switch

Relay/Contactor Coil

Low Pressure Switch

JW1

— Clippable Field Selection Jumper

LOC

— Loss of Charge Pressure Switch

High Pressure Switch

LON

— Local Operating Network

Condensate Pan

MV

— Motorized Valve

Splice Cap

MVES

— Motorized Valve End Switch

Solenoid Coil

Circuit Breaker

NEC

— National Electrical Code

Temperature Switch

*Optional Wiring.

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer is wired to 460 v BLK/RED lead for 460-3-60 units. Transformer is energy limiting or may have circuit breaker.

4.FP1 thermistor provides low temperature protection for water. When using antifreeze solutions, cut JW3 jumper.

5.Refer to microprocessor control, LON, or thermostat installation instructions for wiring to the unit. Wire “N01” from LON to “Y1” Complete C when a motorized valve is not used. Low voltage wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.

6.Factory cut JW1 jumper. Dry contact will be available between AL1 and AL2.

7.Transformer secondary ground via green wire with yellow strip from “C” terminal to control box.

8.Fan motors are factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed tap “M” and connect to “H” for high speed or “L” for low speed.

9.For low speed, remove BLK wire from BR “6” and replace with RED. Connect BLK and BRN wires together.

10.Optional LON wires. Only connect if LON connection is desired at the wall sensor.

11.For blower motors with leads. For medium or low speed, disconnect BLK wire from BR “6”. Connect BLK and ORG/PUR wire together. Connect RED for low or BLU for medium to BR “6”.

12.Blower motor factory wired to medium speed. For low speed remove BLU wire from medium tap and connect to low speed tap. For high speed, remove BLU wire from exisiting speed tap and remove BRN jumper wire from high speed tap. Connect BLU wire to high speed tap. Tape off unconnected end of BRN jumper.

13.The 460-v units using an internal secondary pump will require a neutral wire from the supply side in order to feed the accessory with 265-v.

Fig. 16 — 50PCH,PCV Units with Complete C and LON Controller (460 V)

15

a50-8440

Deluxe D

LEGEND

AL

— Alarm Relay Contacts

P1

— Field Wiring Terminal Block

BM

— Blower Motor

RVS

— Reversing Valve Solenoid

BMC

— Blower Motor Capacitor

TRANS

— Transformer

BR

— Blower Relay

TXV

— Thermostatic Expansion Valve

CB

— Circuit Breaker

Field Line Voltage Wiring

CC

— Compressor Contactor

Field Low Voltage Wiring

CO

— Sensor, Condensate Overflow

FP1

— Sensor, Low Temperature Protection, Water Coil

Printed Circuit Trace

FP2

— Sensor, Low Temperature Protection, Air Coil

Optional Wiring

HP

— High-Pressure Switch

HPWS — High-Pressure Water Switch

Relay/Contactor Coil

JW1

— Clippable Field Selection Jumper

LOC

— Loss of Charge Pressure Switch

LON

— Local Operating Network

Condensate Pan

MV

— Motorized Valve

MVES

— Motorized Valve End Switch

Solenoid Coil

NEC

— National Electrical Code

*Optional Wiring.

Temperature Switch

Thermistor

Ground

Wire Nut

Relay Contacts - N.C.

Relay Contacts - N.O.

Low Pressure Switch

High Pressure Switch

Splice Cap

Circuit Breaker

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer is wired to 460-v BLK/RED lead for 460-3-60 units. Transformer is energy limiting or may have circuit breaker.

4.FP1 thermistor provides low temperature protection for water. When using antifreeze solutions, cut JW3 jumper.

5.Refer to microprocessor control, LON, thermostat installation instructions for wiring to the unit. Wire “N01” from LON to “Y1” Deluxe D when motorized valve is not used. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.

6.Factory cut JW4 jumper. Dry contact will be available between AL1 and AL2.

7.Transformer secondary ground via green wire with yellow stripe from “C” terminal to control box.

8.Blower motor is factory wired for medium and high speeds. For any other combination of speeds, attach black wire to the higher of the two desired speed taps at the motor, and attach the blue wire to the lower of the two desired speed taps.

9.Blower motor is factory wired for high and low speeds. No other combination is available.

10.Optional LON wires. Only connect if LON connection is desired at the wall sensor.

11.The 460-v units using an internal secondary pump will require a neutral wire from the supply side in order to feed the accessory with 265-v.

Fig. 17 — 50PCH,PCV units with Deluxe D and LON Controller (460 V)

WHSP-OPEN

FSD

16	-A50
	8697

	LEGEND
BM	— Blower Motor
BR	— Blower Relay
CO	— Condensate Overflow
FSD	— Fire Smoke Detector
LWT	— Leaving Water Temperature
N.C.	— Normally Closed
OAD	— Outside Air Damper
OCC	— Occupancy Input Contact
RH	— Relative Humidity
SAT	— Supply Air Temperature
SPT	— Space Temperature

Fig. 18 — Units with Complete C and WSHP Open Multiple Protocol Controls