Carrier 50PTH specifications Contents, Safety Considerations, Aquazone, Install Condensate Drain

AQUAZONE™

50PTH, PTV, PTD026-072 Two-Stage Water Source Heat Pumps with PURON® Refrigerant (R-410A)

Installation, Start-Up, and Service Instructions

	CONTENTS
		Page
SAFETY CONSIDERATIONS		. . .1,2
GENERAL		. . . . 2
INSTALLATION		. 2-29
Step 1 — Check Jobsite		. . . . 2
Step 2 — Check Unit		. . . . 2
•	STORAGE
•	PROTECTION
•	INSPECT UNIT
Step 3 — Locate Unit		. . . . 8
• FIELD CONVERSION OF DISCHARGE AIR
Step 4 — Mount the Unit		. . . . 9
•	HORIZONTAL UNIT
•	VERTICAL UNITS
Step 5 — Check Duct System		. . . . 9
•	SOUND ATTENUATION
•	EXISTING DUCT SYSTEM
Step 6 — Install Condensate Drain		. . . . 9
•	HORIZONTAL UNIT
•	VERTICAL UNITS
•	VENTING
Step 7 — Pipe Connections		. . . 10
•	WATER LOOP APPLICATIONS
• GROUND-WATER APPLICATIONS
• GROUND-LOOP APPLICATIONS
• INSTALLATION OF SUPPLY AND RETURN HOSE
	KIT
Step 8 — Wire Field Power Supply		. . . 12
•	POWER CONNECTION
•	SUPPLY VOLTAGE
•	208-VOLT OPERATION
•	460-VOLT OPERATION
•	WSHP OPEN WIRING
Step 9 — Wire Field Controls		. . . 25
•	THERMOSTAT CONNECTIONS
•	WATER FREEZE PROTECTION
• AIR COIL FREEZE PROTECTION
•	ACCESSORY CONNECTIONS
•	WATER SOLENOID VALVES
Step 10 — Operate ECM Interface Board		. . . 27
• STANDALONE — NO DDC CONTROLS
•	WSHP OPEN CONTROLS
PRE-START-UP		.29,30
System Checkout		. . . 29
FIELD SELECTABLE INPUTS		30-33
Complete C Control Jumper Settings		. . . 30
Deluxe D Control Jumper Settings		. . . 30
Complete C Control DIP Switches		. . . 30
Deluxe D Control DIP Switches		. . . 30
Units with Modulating Hot Water Reheat
	(HWR) Option	. . . 31
• STANDALONE — NO DDC CONTROLS
•	WSHP OPEN CONTROLS
•	HWR APPLICATION CONSIDERATIONS
•	HWR COMPONENT FUNCTIONS
Deluxe D Control Accessory
	Relay Configurations	. . . 32

Page START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-38 Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 34 Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 34 Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 34 Unit Start-Up with WSHP Open Controls . . . . . . . . 36 Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 38

Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 38

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-42 Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Units with Aquazone™ Complete C Control . . . . . 39 Units with Aquazone Deluxe D Control . . . . . . . . . . 39 Units with WSHP Open Multiple Protocol. . . . . . . . 39

COMPLETE C AND DELUXE D BOARD

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42,43

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

WSHP Open Test Mode. . . . . . . . . . . . . . . . . . . . . . . . . . 43

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Aquazone Deluxe D Control LED Indicators . . . . . 43

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44,45

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 44

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 44

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 45

Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 45

Replacing the WSHP Open Controller’s

Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 45-53 Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Control Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 WSHP Open Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Thermostatic Expansion Valves . . . . . . . . . . . . . . . . . . 46 Stopped or Malfunctioned ECM Motor. . . . . . . . . . . . 50 Moisture Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

APPENDIX A — WSHP OPEN SCREEN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . 54-59

50PTH,PTV,PTD 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

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

Catalog No. 04-53500079-01 Printed in U.S.A. Form 50PT-4SI Pg 1 7-10 Replaces: 50PT-3SI