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Installation, Start-Up, and Service Instructions
CONTENTS
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . 1,2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Step 1 - Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 - Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3 - Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 4 - Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 5 - Check Duct System . . . . . . . . . . . . . . . . . . . . 8
Step 6 - Install Condensate Drain . . . . . . . . . . . . . . . 8
Step 7 - Pipe Connections . . . . . . . . . . . . . . . . . . . . . . 9
KIT
Step 8 - Wire Field Power Supply . . . . . . . . . . . . . . 11
Step 9 - Wire Field Controls. . . . . . . . . . . . . . . . . . . . 22
Operate ECM Interface Board . . . . . . . . . . . . . . . . . . . 24
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-27
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 26
Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 26
Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 26
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 28
Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 28
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28,28
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Units with Aquazone™ Complete C Control . . . . . 28
Units with Aquazone Deluxe D Control . . . . . . . . . . 28
Units with Hot Gas Reheat Option. . . . . . . . . . . . . . . 28
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
LED Fault Indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Board Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-30
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Water Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 29
Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500104-01
Two-Stage Water Source Heat Pumps
Page
Printed in U.S.A.
Form 50PT-5SI
50PTH, PTV024-070
®
with Puron
Refrigerant (R-410A)
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 30
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 30
Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 31
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 31-33
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Control Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Thermostatic Expansion Valves . . . . . . . . . . . . . . . . . 31
Moisture Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
50PTH,PTV 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 func-
tions such as cleaning coils and filters and replacing filters. All
other operations should be performed by trained service
personnel. When working on air-conditioning equipment, ob-
serve precautions in the literature, tags and labels attached to
the unit, and other safety precautions that may apply.
Improper installation, adjustment, alteration, service, main-
tenance, 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 a local
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 individ-
ual 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 inju-
ry 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 this symbol is displayed on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Pg 1
519
Aquazone™
Page
6-14
Replaces: NEW
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Table of Contents
Related Manuals for Carrier Aquazone PTV024-070
Summary of Contents for Carrier Aquazone PTV024-070
-
Page 1: Table Of Contents
Aquazone™ 50PTH, PTV024-070 Two-Stage Water Source Heat Pumps ® with Puron Refrigerant (R-410A) Installation, Start-Up, and Service Instructions Page CONTENTS Condensate Drain Cleaning ..... 30 Page Air Coil Cleaning . -
Page 2: General
1. Be sure that the location chosen for unit installation pro- vides ambient temperatures maintained above freezing. WARNING 2. Be sure the installation location is isolated from sleeping Electrical shock can cause personal injury or death. Before areas, private offices and other acoustically sensitive installing or servicing system, always turn off main power spaces. - Page 3 INSPECT UNIT — To prepare the unit for installation, com- 6. Remove the shipping bolts from compressor support plete the procedures listed below: plate to maximize vibration and sound alternation. 1. Compare the electrical data on the unit nameplate with CAUTION ordering and shipping information to verify that the correct unit has been shipped.
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Page 8: Step 3 - Locate Unit
ductwork is not recommended as the unit’s performance will Locate the unit in an indoor Step 3 — Locate Unit — be adversely affected. area that allows easy removal of the filter and access panels, with enough room for service personnel to perform mainte- nance or repair. -
Page 9: Step 7 - Pipe Connections
• Flush the piping system prior to operation to remove dirt choose from: water loop, ground-water and ground loop. Refer and foreign materials from the system. to Piping Section of Carrier System Design Manual for addi- tional information. GROUND-WATER APPLICATIONS — Typical ground- water piping is shown in Fig. -
Page 10: Ground-Loop Applications
Water Supply and Quantity — Check water supply. Water GROUND-LOOP APPLICATIONS — Temperatures between supply should be plentiful and of good quality. See Table 2 for 20 and 110 F and a cooling capacity of 2.25 to 3 gpm of flow water quality guidelines. -
Page 11: Installation Of Supply And Return Hose
Optional pressure-rated hose assemblies designed specifi- cally 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 kink- ing during installation. - Page 12 — Compressor Contactor — Compressor Contactor — Emergency Relay (Option) — Emergency Relay (Option) — Second Stage Relay — Second Stage Relay — Hot Gas Reheat Relay (Option) — Hot Gas Reheat Relay (Option) — Cooling Relay — Cooling Relay —...
- Page 13 Table 5 — 50PTH,PTV Units with Electric Heat Option — Constant Torque Motor Electrical Data HEATER WATTS HEATER AMPS MOTOR FLA CIRCUIT EH RATED UNIT SIZE STAGE FUSES 4,800 3,600 20.0 17.3 — 28.5 25.1 4,800 3,600 20.0 17.3 — 32.5 29.1 9,600...
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Page 22: Step 9 - Wire Field Controls
• Low-pressure switch located in the unit refrigerant suc- Step 9 — Wire Field Controls tion line and wired across terminals LPC1 and LPC2 on the Complete C Board. WARNING • Complete C Board Dry Contacts are Normally Open (NO). To avoid possible injury or death due to electrical shock, •... - Page 23 blink code explanation. The remote device must have a mal- function detection capability when the Complete C board is set to PULSE. IMPORTANT: If 24 VAC output is needed R must be wired to ALR-COM terminal; 24 VAC will be available to the ALR-OUT terminal when the unit is in the alarm con- dition.
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Page 24: Operate Ecm Interface Board
of air delivery so if the LED blinks 12 times, pauses, blinks 12 In addition to pro- Operate ECM Interface Board — times, etc. the blower is delivering approximately 1200 CFM. viding a connecting point for thermostat wiring, the interface THERMOSTAT OUTPUTS board also translates thermostat inputs into control commands Y1 First Stage Compressor Operation... -
Page 25: Pre-Start-Up
Table 8 — ECM Constant CFM Motor Blower Performance Data AIRFLOW (Cfm) 50PTH, RATED AIRFLOW ADJUSTMENT External Static Pressure (in. wg) SPEED UNITS (Cfm) 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 High — — PART — — Normal LOAD —... -
Page 26: Start-Up
Contact Carrier Commercial Services or prod- normal level to ensure proper unit operation. uct management for acceptable temperature ranges. -
Page 27: Flow Regulation
Contact Carrier Commercial Services or prod- 4. Shutting off the return valve that connects into the flush uct management for acceptable temperature ranges. cart reservoir will allow 50 psig surges to help purge air pockets. This maintains the pump at 50 psig. -
Page 28: Cooling Tower/Boiler Systems
60 to Enable and Compressor relays are turned on immediately. 95 F. Carrier recommends using a closed circuit evaporative Once the demand is removed, the relays are turned off and the cooling tower with a secondary heat exchanger between the control reverts to Standby mode. -
Page 29: Complete C And Deluxe D Board
NOTE: Cooling always overrides Reheat mode. In the Cooling IMPORTANT: When a compressor is removed from this mode, the unit cools and dehumidifies. If the cooling thermo- unit, system refrigerant circuit oil will remain in the com- stat is satisfied but there is still a call for dehumidification, the pressor. -
Page 30: Condensate Drain Cleaning
Fig. 23 — Gravity Flow Method Proper water treatment can minimize tube fouling and pitting. If such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design GAS VENT PUMP PRIMING CONN. -
Page 31: Refrigerant Charging
Thermostat- Refrigerant Charging Thermostatic Expansion Valves — ic expansion valves (TXV) are used as a means of metering the refrigerant through the evaporator to achieve a preset superheat WARNING at the TXV sensing bulb. Correct superheat of the refrigerant is important for the most efficient operation of the unit and for the To prevent personal injury, wear safety glasses and gloves life of the compressor. - Page 32 SUCTION COIL AIRFLOW AIRFLOW (°F) (°F) COMPRESSOR THERMISTOR EXPANSION COAX DISCHARGE VALVE CONDENSATE OVERFLOW LIQUID (CO) LINE WATER IN WATER OUT AIR COIL WATER FREEZE COIL PROTECTION PROTECTION LEGEND COAX — Coaxial Heat Exchanger Airflow Refrigerant Liquid Line Flow Fig. 26 — FP1 and FP2 Thermistor Location •...
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Page 33: Moisture Check
ally be normal or high if there is an overcharge of refrig- erant. IMPORTANT: Due to the hygroscopic nature of the • LOW suction pressure and frosting of the valve and/or POE oil in Puron refrigerant (R-410A) and other envi- equalizer line may indicate a failed valve. - Page 34 The refrigerant system may be contaminated with moisture or noncondensables. Recover refrigerant, replace filter dryer, evacuate the refrigerant system, and recharge with factory recommended charge. © Carrier Corporation 2014 8-733-954-208 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
- Page 35 50PTH,PTV START-UP CHECKLIST CUSTOMER:___________________________ JOB NAME: _______________________________________ MODEL NO.:___________________________ SERIAL NO.: _____________ DATE: _________________ I. PRE-START-UP DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE? (Y/N) HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS TIGHT? (Y/N) HAVE WATER CONNECTIONS BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER? (Y/N) HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN? (Y/N)
- Page 36 COMPRESSOR EXPANSION COAX DISCHARGE VALVE °F °F LIQUID LINE °F FLUID IN FLUID OUT CONTACT CARRIER COMMERCIAL SERVICES OR PRODUCT MANAGEMENT FOR ACCEPTABLE PRESSURE DROP TO DETERMINE FLOW RATE COOLING CYCLE ANALYSIS °F SUCTION COIL °F °F COMPRESSOR EXPANSION COAX...