AQUAZONE™
50PTH, PTV, PTD026-072 Two-Stage Water Source Heat Pumps with PURON® Refrigerant (R-410A)
Installation, Start-Up, and Service Instructions
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CONTENTS |
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Page |
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . |
. . .1,2 |
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GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . 2 |
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INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
2-29 |
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Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . |
. . . 2 |
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Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . 2 |
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• |
STORAGE |
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• |
PROTECTION |
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• |
INSPECT UNIT |
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Step 3 — Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . 8 |
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• FIELD CONVERSION OF DISCHARGE AIR |
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Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . |
. . . 9 |
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• |
HORIZONTAL UNIT |
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• |
VERTICAL UNITS |
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Step 5 — Check Duct System . . . . . . . . . . . . . . . . . |
. . . 9 |
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• |
SOUND ATTENUATION |
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• |
EXISTING DUCT SYSTEM |
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Step 6 — Install Condensate Drain . . . . . . . . . . . . |
. . . 9 |
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• |
HORIZONTAL UNIT |
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• |
VERTICAL UNITS |
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• |
VENTING |
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Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . |
. . 10 |
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• |
WATER LOOP APPLICATIONS |
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• GROUND-WATER APPLICATIONS |
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• GROUND-LOOP APPLICATIONS |
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• INSTALLATION OF SUPPLY AND RETURN HOSE |
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KIT |
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Step 8 — Wire Field Power Supply . . . . . . . . . . . . |
. . 12 |
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• |
POWER CONNECTION |
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• |
SUPPLY VOLTAGE |
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• |
208-VOLT OPERATION |
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• |
460-VOLT OPERATION |
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• |
WSHP OPEN WIRING |
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Step 9 — Wire Field Controls. . . . . . . . . . . . . . . . . . |
. . 25 |
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• |
THERMOSTAT CONNECTIONS |
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• |
WATER FREEZE PROTECTION |
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• AIR COIL FREEZE PROTECTION |
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• |
ACCESSORY CONNECTIONS |
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• |
WATER SOLENOID VALVES |
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Step 10 — Operate ECM Interface Board . . . . . . |
. . 27 |
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• STANDALONE — NO DDC CONTROLS |
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• |
WSHP OPEN CONTROLS |
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PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
29,30 |
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System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 29 |
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FIELD SELECTABLE INPUTS. . . . . . . . . . . . . . . . . |
30-33 |
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Complete C Control Jumper Settings. . . . . . . . . . |
. . 30 |
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Deluxe D Control Jumper Settings . . . . . . . . . . . . |
. . 30 |
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Complete C Control DIP Switches . . . . . . . . . . . . . |
. . 30 |
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Deluxe D Control DIP Switches. . . . . . . . . . . . . . . . |
. . 30 |
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Units with Modulating Hot Water Reheat |
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(HWR) Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 31 |
• STANDALONE — NO DDC CONTROLS |
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• |
WSHP OPEN CONTROLS |
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• |
HWR APPLICATION CONSIDERATIONS |
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• |
HWR COMPONENT FUNCTIONS |
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Deluxe D Control Accessory |
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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 |
components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions 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, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.
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 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 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 this symbol is displayed 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™ two-stage 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:
•50PTH unit with horizontal airflow and right, left or back discharge
•50PTV unit with vertical airflow and top discharge
•50PTD unit with vertical airflow and bottom discharge (downflow)
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.
IMPORTANT: This equipment is designed for indoor installation ONLY. Extreme variations in temperature, humidity and corrosive water or air will adversely affect the unit performance, reliability and service life.
HORIZONTAL UNIT (50PTH) — 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 AND DOWNFLOW UNITS (50PTV, PTD) — 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 and 4 for overall dimensions. Refer to Fig. 5 for an example of a typical vertical installation. Refer to Fig. 6 for a sample downflow 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.Be sure that the location chosen for unit installation provides ambient temperatures maintained above freezing. Well water applications are especially susceptible to freezing.
2.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.
3.Check local codes to be sure a secondary drain pan is not required under the unit.
4.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.
5.Provide sufficient space for duct connection. Do not allow the weight of the ductwork to rest on the unit.
6.Provide adequate clearance for filter replacement and drain pan cleaning. Do not allow piping, conduit, etc. to block filter access.
7.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.
2
8.Provide an unobstructed path to the unit within the closet or mechanical room. Space should be sufficient to allow removal of unit if necessary.
9.Provide ready access to water valves and fittings, and screwdriver access to unit side panels, discharge collar, and all electrical connections.
10.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, 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.Do not remove the packaging until the unit is ready for installation.
3.Verify that the unit’s refrigerant tubing is free of kinks or dents, and that it does not touch other unit components.
4.Inspect all electrical connections. Be sure connections are clean and tight at their terminations.
5.Loosen compressor bolts until the compressor rides freely on springs. Remove shipping restraints.
6.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.
7.Remove any blower support cardboard from inlet of the blower.
8.Locate and verify any accessory kit located in compressor and/or blower section.
9.Remove any access panel screws that may be difficult to remove once unit is installed.
Table 1 — Physical Data — 50PTH, PTV, PTD026-072 Units
UNIT 50PTH, PTV, PTD |
026 |
|
038 |
|
049 |
|
064 |
|
072 |
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COMPRESSOR (1 each) |
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Two-Stage, Scroll |
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FACTORY CHARGE R-410A (oz) |
58 |
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78 |
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81 |
|
144 |
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156 |
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ECM FAN MOTOR AND BLOWER |
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Fan Motor Type |
VAR |
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VAR |
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VAR |
|
VAR |
|
VAR |
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Fan Motor (Hp) |
1/ |
|
1/ |
2 |
|
1 |
|
1 |
|
1 |
|
Blower Wheel Size (D x W) (in.) |
2 |
|
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|
11x10 |
|
11x10 |
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11x10 |
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9 x 7 |
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11 x 10 |
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|
||||||
COAXIAL COIL VOLUME (gal.) |
.76 |
|
.92 |
|
1.24 |
|
1.56 |
|
1.56 |
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WATER CONNECTION SIZE (FPT) (in.) |
3/ |
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3/ |
4 |
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1 |
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1 |
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1 |
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4 |
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HWG CONNECTION SIZE (FPT) (in.) |
1/ |
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1/ |
2 |
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1/ |
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1/ |
2 |
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1/ |
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2 |
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2 |
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2 |
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VERTICAL |
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Air Coil |
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Dimensions (H x W) (in.) |
28 x 20 |
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28 x 25 |
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32 x 25 |
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36 x 25 |
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36 x 25 |
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Filter Standard — 1-in. Throwaway |
1 — 28 x 24 |
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1 — 28 x 30 |
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2 — 16 x 30 |
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1 — 16 x 30 |
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1 — 16 x 30 |
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(Qty — Size) (in.) |
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1 — 20 x 30 |
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1 — 20 x 30 |
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Weight (lb) |
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Operating |
266 |
|
327 |
|
416 |
|
443 |
|
443 |
||
Packaged |
276 |
|
337 |
|
426 |
|
453 |
|
453 |
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HORIZONTAL |
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Air Coil |
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|
|
|
|
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Dimensions (H x W) (in.) |
18 x 31 |
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20 x 25 |
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20 x 40 |
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20 x 45 |
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20 x 45 |
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Filter Standard — 1-in. Throwaway |
2 — 18 x 18 |
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1 — 12 x 20 |
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1 — 18 x 20 |
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2 — 20 x 24 |
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2 — 20 x 24 |
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(Qty — Size) (in.) |
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1 — 20 x 24 |
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1 — 20 x 24 |
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Weight (lb) |
|
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|
|
|
|
|
|
|
|
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Operating |
266 |
|
327 |
|
416 |
|
443 |
|
443 |
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Packaged |
276 |
|
337 |
|
426 |
|
453 |
|
453 |
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LEGEND |
ECM |
— Electronically Commutated Motor |
HWG |
— Hot Water Generator |
VAR |
— Variable Speed |
NOTE: All units have spring compressor mountings, TXV (thermostatic expansion valve) expansion devices, and 1/2 and 3/4-in. electrical knockouts.
3
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LEGEND |
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ASP |
— Alternate Service Panel |
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BSP |
— Blower Service Panel |
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CAP |
— Control Access Panel |
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CSP |
— Compressor Service Panel |
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2 Service |
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CSP |
FPT |
— Female Pipe Thread |
Front |
Access |
Front |
2 Service Access |
HWG |
— Hot Water Generator |
2 Service Access |
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HWR |
— Hot Water Reheat |
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Left Return |
Power Supply |
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3/4” Knockout |
Right Return |
2 Service Access |
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ASP |
|
1/2” |
1.6” |
CSP |
3.25” |
Knockout |
|
3.25” |
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Low Voltage |
|
L |
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G |
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1/2” Knockout |
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K |
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E |
F |
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H |
J |
CAP |
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H |
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Left |
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Right |
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D |
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Discharge |
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Discharge |
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A |
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Condensate |
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Back |
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Condensate |
Back |
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3/4” FPT |
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Discharge |
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3/4” FPT |
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Discharge |
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|
ide |
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|
ide |
P |
R |
Q |
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P |
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Size |
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BSP |
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BSP |
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CoilS |
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Front |
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CoilS |
Blower |
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C |
Y |
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Z |
C |
|
O |
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Blower |
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Outlet |
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O |
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Outlet |
Air |
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Air |
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, 072 |
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Q |
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R |
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A |
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X |
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A |
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Y Configuration - Left Return/Back Discharge |
P |
|
M |
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P Configuration - Right Return/Back Discharge - Air Coil Opening |
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N |
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Blower |
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BSP |
P |
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ASP |
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O |
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CSP |
Left |
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Right |
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Outlet |
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BSP |
Blower |
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View |
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View |
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O |
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Outlet |
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N |
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Front |
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M |
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W Configuration - Left Return/Right Discharge - Air Coil Opening |
N Configuration - Right Return/Left Discharge - Air Coil Opening |
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V |
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U |
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Air Coil |
1.1” |
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S |
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C |
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CSP |
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Front
B
W Configuration - Left Return/Right Discharge - Air Coil Opening
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Air Coil |
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S |
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C |
ASP |
T |
Right |
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View |
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Front |
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B |
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N Configuration - Right Return/Left Discharge - Air Coil Opening |
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WATER |
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OVERALL CABINET |
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CONNEC- |
ELECTRICAL |
DISCHARGE CONNECTIONS (in.) |
RETURN CONNECTION |
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WATER CONNECTIONS (in.) |
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TIONS (in.) |
DUCT FLANGE INSTALLED |
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USING AIR COIL |
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(in.) |
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KNOCKOUTS (in.) |
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- UNITS |
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( 0.10 in.) |
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OPENING (in.) |
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50PTH |
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WITH HWR |
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UNIT |
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J |
K |
L |
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1 |
2 |
3 |
4 |
5 |
Loop |
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1 |
2 |
1/2-in. |
1/2-in. |
3/4-in. |
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HWG |
M |
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P |
Q |
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S |
T |
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A |
B |
C |
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Water |
FPT |
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Cond |
Cond |
Cond |
(LH |
N |
Supply |
Supply |
(RH |
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R |
Return |
Return |
U |
V |
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Width |
Depth |
Height |
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F |
G |
H |
FPT |
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D |
E |
(in.) |
Loop |
Loop |
Low |
Ext |
Power |
rtn) |
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Height |
Width |
rtn) |
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Width |
Height |
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HWG |
HWG |
Cond- |
(in.) |
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In |
Out |
In |
Out |
ensate |
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in D |
out E |
Voltage |
Pump |
Supply |
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026 |
22.4 |
62.2 |
19.3 |
2.1 |
10.0 |
13.9 |
16.9 |
3.5 |
3/4 |
1/2 |
2.1 |
10.0 |
3.6 |
6.1 |
8.6 |
3.6 |
2.0 |
12.5 |
15.5 |
3.6 |
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2.0 |
33.8 |
16.2 |
2.3 |
1.5 |
038 |
25.4 |
71.2 |
21.3 |
3.4 |
10.8 |
14.6 |
18.9 |
3.4 |
3/4 |
1/2 |
5.96 |
13.13 |
3.4 |
6.1 |
8.6 |
3.1 |
1.2 |
19.0 |
17.5 |
3.1 |
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1.0 |
34.8 |
18.2 |
3.1 |
1.5 |
049 |
25.4 |
76.2 |
21.3 |
3.4 |
10.8 |
15.6 |
18.9 |
3.4 |
1 |
1/2 |
5.96 |
13.13 |
3.6 |
6.1 |
8.6 |
3.1 |
1.2 |
19.0 |
17.5 |
3.1 |
|
1.0 |
39.8 |
18.2 |
3.1 |
1.5 |
064,072 |
25.4 |
81.2 |
21.3 |
3.4 |
10.8 |
15.6 |
18.9 |
3.4 |
1 |
1/2 |
5.96 |
13.13 |
3.6 |
6.1 |
8.6 |
3.1 |
1.2 |
19.0 |
17.5 |
3.1 |
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1.0 |
44.8 |
18.2 |
3.1 |
1.5 |
NOTES:
1.Condensate connection is stainless steel 3/4 in. female pipe thread (FPT).
2.Unit shipped with top and bottom filter rack and is not suitable for duct connection without additional support.
3.Discharge flange is factory-installed.
4.Hanger kit is factory-installed.
5.Shaded areas are recommended service areas, not required.
6.Discharge can be modified in field. Return cannot be modified.
AIRFLOW CONFIGURATION
CODE |
RETURN |
DISCHARGE |
N |
Right |
Left |
P |
Right |
Back |
W |
Left |
Right |
Y |
Left |
Back |
Fig. 1 — 50PTH026-072 Dimensional Data
4
Field-supplied transition to minimize pressure loss
Supply Air
Insulated supply duct with at least one 90 degree elbow to reduce air noise (field-supplied)
Flexible
Connection
Field-Supplied Electric Heat (if applicable)
Aux Electric
Heat Disconnect
3/8” Threaded Rod (by others)
Vibration Isolator (white-compressor end and red-blower end)
Washer (by others)
Double Hex Nuts
(by others)
3/8” threaded rods (by others)
FilterAccess
Return Air (Ductwork
not shown)
Thermostat
Wiring
Power Wiring
Stainless steel braid hose with integral “J” swivel
Unit Power 
Unit Power Disconnect (by others)
Balancing Valve (fieldinstalled accessory)
Low Pressure Drop Water Control Valve (optional) (field-installed accessory)
Building
Loop
Unit Hanger |
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supply |
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(factory- |
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supplied) |
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accessory) |
and return piping) (field-installed accessory) |
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Integral hanger support- pre-attached in factory
UNIT HANGER ISOLATION DETAIL
Fig. 2 — Typical Installation — 50PTH Unit
5
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LEGEND |
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ASP |
— Alternate Service Panel |
Field-Installed |
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BSP |
— Blower Service Panel |
Discharge Flange |
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CAP |
— Control Access Panel |
(shipped loose inside |
Access Panels |
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CSP |
— Compressor Service Panel |
blower section) |
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FPT |
— Female Pipe Thread |
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Filter Bracket |
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HV |
— High Voltage |
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HWG |
— Hot Water Generator |
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HWR |
— Hot Water Reheat |
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LV |
— Low Voltage |
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P |
N |
O |
Front |
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Q |
Air Coil Side |
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K - Configuration - Right Return
/Top Discharge
(Top View)
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B |
Air Coil |
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ASP |
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N |
P |
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BSP |
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Front |
O |
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A |
2ʼ Service Access |
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CSP |
ASP |
Air Coil Side |
M |
CAP |
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J - Configuration - Left Return
/Top Discharge
(Top View)
S |
R |
U |
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Air Coil
T
C
R |
S |
U |
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Air Coil
T
C
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1.18” |
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ASP |
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CSP |
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Front |
Back |
Back |
Front |
2ʼ Service Access |
Isometric View |
1.00”
Power Supply |
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3/4” |
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HV Knockout |
1.63” |
CAP |
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1/2” |
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Knockout |
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Low Voltage |
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1/2” |
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LV Knockout |
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CSP |
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K |
L |
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J |
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1.68” |
Condensate |
3/4” FPT |
G |
F |
E |
D H |
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K - Configuration - Right Return - |
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J - Configuration - Left Return - |
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Air Coil Opening |
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Air Coil Opening |
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Front View |
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(Right Side View) |
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(Left Side View) |
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WATER |
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OVERALL CABINET |
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CONNEC- |
ELECTRICAL |
DISCHARGE CONNECTIONS (in.) |
RETURN CONNECTION |
||||||||||||||
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WATER CONNECTIONS (in.) |
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TIONS (in.) |
DUCT FLANGE INSTALLED |
USING AIR COIL OPENING |
||||||||||||||||||||
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(in.) |
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KNOCKOUTS (in.) |
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- UNITS |
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( 0.10 in.) |
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(in.) |
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50PTV |
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WITH HWR |
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UNIT |
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J |
K |
L |
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1 |
2 |
3 |
4 |
5 |
Loop |
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1 |
2 |
1/2-in. |
1/2-in. |
3/4-in. |
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HWG |
M |
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O |
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P |
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Q |
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S |
T |
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A |
B |
C |
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Water |
FPT |
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Cond |
Cond |
Cond |
(LH |
N |
Supply |
Supply |
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(RH |
R |
Return |
Return |
U |
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Width |
Depth |
Height |
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F |
G |
H |
FPT |
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D |
E |
(in.) |
Loop |
Loop |
Low |
Ext |
Power |
rtn) |
|
Width |
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Depth |
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rtn) |
|
Depth |
Height |
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HWG |
HWG |
Cond- |
(in.) |
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In |
Out |
In |
Out |
ensate |
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in D |
out E |
Voltage |
Pump |
Supply |
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026 |
22.4 |
25.6 |
48.5 |
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2.1 |
10.0 |
13.9 |
16.9 |
7.8 |
3/4 |
1/2 |
2.1 |
10.0 |
3.6 |
6.1 |
8.6 |
7.2 |
5.8 |
14.0 |
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14.0 |
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4.9 |
2.2 |
21.1 |
27.2 |
1.0 |
038 |
25.4 |
30.6 |
50.5 |
|
3.4 |
10.8 |
15.6 |
18.9 |
7.8 |
3/4 |
1/2 |
5.96 |
13.13 |
3.6 |
6.1 |
8.6 |
6.4 |
6.3 |
18.0 |
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18.0 |
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5.3 |
2.2 |
26.1 |
27.2 |
1.0 |
049 |
25.4 |
30.6 |
54.5 |
|
3.4 |
10.8 |
15.6 |
18.9 |
7.8 |
1 |
1/2 |
5.96 |
13.13 |
3.6 |
6.1 |
8.6 |
6.4 |
6.3 |
18.0 |
|
18.0 |
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5.3 |
2.2 |
26.1 |
31.2 |
1.0 |
064, |
25.4 |
30.6 |
58.5 |
|
3.4 |
10.8 |
15.6 |
18.9 |
7.8 |
1 |
1/2 |
5.96 |
13.13 |
3.6 |
6.1 |
8.6 |
6.4 |
6.3 |
18.0 |
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18.0 |
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5.3 |
2.2 |
26.1 |
35.2 |
1.0 |
072 |
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NOTES:
1.Condensate connection is stainless steel 3/4 in. female pipe thread (FPT).
2.Unit shipped with top and bottom filter rack and is not suitable for duct connection without additional support.
3.Discharge flange is field-installed.
4.Shaded areas are recommended service areas, not required.
AIRFLOW CONFIGURATION
CODE |
RETURN |
DISCHARGE |
J |
Left |
Top |
K |
Right |
Top |
Fig. 3 — 50PTV Dimensional Data
6
LEGEND
ASP — Alternate Service Panel
BSP — Blower Service Panel
CAP — Control Access Panel
CSP — Compressor Service Panel
FPT — Female Pipe Thread
HWG — Hot Water Generator
HWR — Hot Water Reheat
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WATER |
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||||||||
|
OVERALL CABINET |
|
|
|
|
WATER CONNECTIONS (in.) |
|
|
|
|
|
|
|
|
|
CONNEC- |
|
|
ELECTRICAL |
DISCHARGE CONNECTIONS (in.) |
|
RETURN CONNECTION (in.) |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
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(in.) |
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|
|
|
TIONS (in.) |
|
KNOCKOUTS (in.) |
|
DUCT FLANGE INSTALLED |
|
USING AIR COIL OPENING |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
- UNITS |
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|
( 0.10 in.) |
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1/2-in. |
3/4-in. |
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rtn) |
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ensate |
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026 |
22.4 |
25.6 |
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2.1 |
10.0 |
13.9 |
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3.6 |
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038 |
25.4 |
30.6 |
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10.8 |
15.6 |
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049 |
25.4 |
30.6 |
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10.8 |
15.6 |
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064,072 |
25.4 |
30.6 |
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10.8 |
15.6 |
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NOTES:
1.Condensate connection is stainless steel 3/4 in. female pipe thread (FPT).
2.Unit shipped with top and bottom filter rack and is not suitable for duct connection without additional support.
3.Downflow unit does not have discharge flange, and is rated for zero clearance installation.
4.Shaded areas are recommended service areas, not required.
AIRFLOW CONFIGURATION
CODE |
RETURN |
DISCHARGE |
J |
Left |
Bottom |
K |
Right |
Bottom |
Fig. 4 — 50PTD Dimensional Data
7
Supply Air |
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Building |
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Loop |
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Out |
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Water |
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In |
Balancing Valve |
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(field-installed |
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braid hose |
accessory) |
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with integral |
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“J” swivel |
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Low Pressure |
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accessory) |
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Thermostat |
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Wiring |
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accessory) |
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Ball Valve with optional |
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Compressor |
integral P/T plug |
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Access Panel |
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return piping) (field-Installed |
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accessory) |
NOTE: Ball valve with integral pressure temperature plug recommended.
Fig. 5 — Typical Vertical Installation — 50PTV Unit
Power
Thermostat
Wiring
Compressor
Access Panel
Flexible |
Building |
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Connection |
Loop |
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Water |
Water |
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In |
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steel |
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braid hose |
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integral ”J” |
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swivel(field- |
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Low Pressure |
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accessory) |
Drop Water |
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supply and return |
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Supply Air |
piping)(field-installed |
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accessory) |
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NOTE: Ball valve with integral pressure temperature plug recommended.
Fig. 6 — Typical Downflow Installation —
50PTD 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.
•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, 3, and 4 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 50PTH 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
Connection End
Return Air
Supply
Duct
Side Discharge |
Water |
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Connection End |
Return Air
Drain
Back Discharge
Discharge Air
Fig. 7 — Conversion Right Return,
Side Discharge to Back Discharge
Preparation — The unit should be on the ground in a well lit area. 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. Set screws aside for later use. See Fig. 8.
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.
8
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.
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. 8 — Conversion Left Return, Side Discharge to Back Discharge
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 UNIT (50PTH) — Horizontal units should be mounted using the factory-installed hangers. Proper attachment of hanging rods to building structure is critical for safety. See Fig. 1. Rod attachments must be able to support the weight of the unit. See Table 1 for unit operating weights.
VERTICAL UNITS (50PTV,PTD) — Vertical and downflow units are available in left or right return air configurations. See Fig. 3 and 4. Mount the unit (except 50PTD) 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. 9.
NOTE: Some codes require the use of a secondary drain pan under vertical units. Check local codes for more information.
Fig. 9 — 50PTV Units Mounted With
Vibration Absorption Pad
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 UNIT (50PTH) — Slope the unit toward the drain at 1/4 in. See Fig. 10. If it is not possible to meet the required pitch, install a condensate at the unit to pump condensate to building drain.
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. See Fig. 11 for typical condensate connections.
NOTE: Never use a pipe size smaller than the connection.
VERTICAL UNITS (50PTV,PTD) — Each unit uses a condensate hose inside all cabinets as a trapping loop, therefore an external trap is not necessary. See Fig. 12.
9
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.
1/4” Pitch for Drainage
Pitch Toward
Drain
Drain Connection
Fig. 10 — Horizontal Unit Pitch
NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.
Fig. 11 — Trap Condensate Drain
3/4” Copper FPT/PVC |
3/4” PVC |
|
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Vent |
1/2” |
1/4” per foot |
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slope to drain |
Water |
1/2” |
Connections |
Alternate |
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Condensate |
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Location |
NOTE: Unit does not need to be sloped toward drain.
Fig. 12 — Vertical Condensate Connection
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 3.5 gpm per ton of cooling capacity. For proper maintenance and servicing, pressure-temperature (P/T) ports are necessary for temperature and flow verification.
Cooling tower/boiler systems typically utilize a common loop maintained at 60 to 95 F. The use of a closed circuit evaporative cooling tower with a secondary heat exchange between the tower and the water loop is recommended. If an open type cooling tower is used continuously, chemical treatment and filtering will be necessary.
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-WATER APPLICATIONS — Typical groundwater piping is shown in Fig. 13. In addition to complying with any applicable codes, consider the following for system piping:
•Install shut-off valves for servicing.
•Install pressure-temperature plugs to measure flow and temperature.
•Connect boiler drains and other valves using a “T” connector to allow acid flushing for the heat exchanger.
•Do not overtighten connections.
•Route piping to avoid service access areas to unit.
•Use PVC SCH80 or copper piping material.
NOTE: PVC SCH40 should not be used due to system high pressure and temperature extremes.
10
Water |
Flow |
Control |
Regulator |
Valve |
(field-installed |
(field-installed |
accessory) |
accessory) |
|
Pressure
Tank
Water Out
Water In
From Pump
Boiler
Drains (field-installed)
Shut-Off
Valve (field-installed accessory)
Strainer (field-installed accessory) (16 to 20 mesh recommended for filter sediment)
Fig. 13 — Typical Ground-Water Piping Installation
Water Supply and Quantity — Check water supply. Water supply should be plentiful and of good quality. See Table 2 for water quality guidelines.
IMPORTANT: Failure to comply with the above required water quality and quantity limitations and the closedsystem application design requirements may cause damage to the tube-in-tube heat exchanger. This damage is not the responsibility of the manufacturer.
In all applications, the quality of the water circulated through the heat exchanger must fall within the ranges listed in the Water Quality Guidelines table. Consult a local water treatment firm, independent testing facility, or local water authority for specific recommendations to maintain water quality within the published limits.
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 3. 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.
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.
CAUTION
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.
Refer to Fig. 14 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.
11
Table 2 — Water Quality Guidelines
CONDITION |
HX |
CLOSED RECIRCULATING† |
OPEN LOOP AND RECIRCULATING WELL** |
|||||
MATERIAL* |
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Scaling Potential — Primary Measurement |
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||
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. |
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pH/Calcium |
All |
N/A |
|
pH < 7.5 and Ca Hardness, <100 ppm |
|
|||
Hardness Method |
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Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.) |
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Scaling indexes should be calculated at 150 F for direct use and HWG applications, and at 90 F for indirect HX use. A monitoring plan should be |
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implemented. |
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Ryznar Stability Index |
All |
N/A |
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6.0 - 7.5 |
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If >7.5 minimize steel pipe use. |
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Langelier Saturation Index |
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–0.5 to +0.5 |
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All |
N/A |
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If <–0.5 minimize steel pipe use. |
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Based upon 150 F HWG and direct well, 85 F indirect well HX. |
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Iron Fouling |
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Iron Fe2+ (Ferrous) |
All |
N/A |
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<0.2 ppm (Ferrous) |
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(Bacterial Iron Potential) |
If Fe2+ (ferrous) >0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria. |
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Iron Fouling |
All |
N/A |
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<0.5 ppm of Oxygen |
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Above this level deposition will occur. |
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Corrosion Prevention†† |
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pH |
All |
6 - 8.5 |
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6 - 8.5 |
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Monitor/treat as needed. |
Minimize steel pipe below 7 and no open tanks with pH <8. |
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Hydrogen Sulfide (H2S) |
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<0.5 ppm |
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All |
N/A |
At H2S>0.2 ppm, avoid use of copper and cupronickel piping or HXs. |
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Rotten egg smell appears at 0.5 ppm level. |
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Copper alloy (bronze or brass) cast components are okay to <0.5 ppm. |
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Ammonia Ion as Hydroxide, |
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<0.5 ppm |
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Chloride, Nitrate and Sulfate |
All |
N/A |
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Compounds |
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Maximum Chloride Levels |
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Maximum allowable at maximum water temperature. |
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50 F (10 C) |
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75 F (24 C) |
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100 F (38 C) |
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Copper |
N/A |
<20 ppm |
|
NR |
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NR |
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Cupronickel |
N/A |
<150 ppm |
|
NR |
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NR |
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304 SS |
N/A |
<400 ppm |
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<250 ppm |
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<150 ppm |
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316 SS |
N/A |
<1000 ppm |
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<550 ppm |
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<375 ppm |
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Titanium |
N/A |
>1000 ppm |
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>550 ppm |
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>375 ppm |
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Erosion and Clogging |
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Particulate Size and Erosion |
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<10 ppm of particles and a |
<10 ppm (<1 ppm “sandfree” for reinjection) of particles and a maximum velocity |
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maximum velocity of 6 fps. |
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All |
of 6 fps. Filtered for maximum 800 micron size. Any particulate that is not |
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Filtered for maximum |
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removed can potentially clog components. |
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800 micron size. |
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Brackish |
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Use cupronickel heat exchanger when concentrations of calcium or sodium chlo- |
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All |
N/A |
ride are greater than 125 ppm are present. (Seawater is approximately 25,000 |
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ppm.) |
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LEGEND |
HWG — |
Hot Water Generator |
|
HX |
— |
Heat Exchanger |
N/A |
— |
Design Limits Not Applicable Considering Recirculating |
NR |
— |
Potable Water |
Application Not Recommended |
||
SS |
— |
Stainless Steel |
*Heat exchanger materials considered are copper, cupronickel, 304 SS (stainless steel), 316 SS, titanium.
†Closed recirculating system is identified by a closed pressurized piping system.
**Recirculating open wells should observe the open recirculating design considerations.
††If the concentration of these corrosives exceeds the maximum allowable level, then the potential for serious corrosion problems exists.
Sulfides in the water quickly oxidize when exposed to air, requiring that no agitation occur as the sample is taken. Unless tested immediately at the site, the sample will require stabilization with a few drops of one Molar zinc acetate solution, allowing accurate sulfide determination up to 24 hours after sampling. A low pH and high alkalinity cause system problems, even when both values are within ranges shown. The term pH refers to the acidity, basicity, or neutrality of the water supply. Below 7.0, the water is considered to be acidic. Above 7.0, water is considered to be basic. Neutral water contains a pH of 7.0.
To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is equivalent to ppm.
Table 3 — Metal Hose Minimum Bend Radii
|
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HOSE DIAMETER (in.) |
MINIMUM BEND RADII (in.) |
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1/ |
21/ |
2 |
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2 |
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3/ |
4 |
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4 |
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1 |
51/2 |
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Swivel |
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Brass |
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Brass |
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Rib Crimped |
Fitting |
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Fitting |
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Length
(2 ft Length Standard) 
MPT
Fig. 14 — 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.
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
12
conform to the Class II temperature limitations described in the NEC.
Refer to unit wiring diagrams Fig. 15-24 for a schematic of the field connections, which must be made by the installing (or electrical) contractor. For Deluxe D with WSHP Open controls 3-phase units and Complete C with Open controls single-phase and 3-phase units contact Application Engineering. Refer to Table 4 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 electrical data shown in Table 4.
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 line side of the compressor contactor terminal as shown in Fig. 25. See Table 4 for amperage ratings to provide 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 an ECM (electronically commutated motor) fan motor, modulating HWR, and/or internal secondary pump will require a neutral wire from the supply side in order to feed accessory with 265-v.
Table 4 — 50PTH,PTV,PTD Electrical Data
50PTH, |
|
VOLTAGE |
COMPRESSOR |
FAN |
TOTAL |
MIN |
MAX |
|
UNITS WITH HWR |
|
||
PTV, PTD |
V-PH-Hz* |
|
|
MOTOR |
CIRCUIT |
FUSE/ |
REHEAT |
TOTAL |
MIN |
MAX |
||
MIN/MAX |
RLA |
LRA |
UNIT FLA |
PUMP |
UNIT |
CIRCUIT |
FUSE/ |
|||||
UNITS |
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|
FLA |
|
AMPS |
HACR |
FLA |
FLA |
AMP |
HACR |
|
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|
||||
026 |
208/230-1-60 |
197/254 |
10.3 |
52.0 |
4.3 |
14.6 |
17.2 |
25 |
0.8 |
15.4 |
18.0 |
25 |
|
208/230-1-60 |
197/254 |
16.7 |
82.0 |
4.3 |
21.0 |
25.2 |
40 |
0.8 |
21.8 |
26.0 |
40 |
038 |
208/230-3-60 |
197/254 |
11.2 |
58.0 |
4.3 |
15.5 |
18.3 |
25 |
0.8 |
16.3 |
19.1 |
30 |
|
460-3-60 |
414/506 |
4.5 |
29.0 |
4.1 |
8.6 |
9.7 |
15 |
0.7 |
9.3 |
10.4 |
15 |
|
208/230-1-60 |
197/254 |
21.2 |
96.0 |
7.0 |
28.2 |
33.5 |
50 |
1.07 |
29.3 |
34.6 |
50 |
049 |
208/230-3-60 |
197/254 |
13.5 |
88.0 |
7.0 |
20.5 |
23.9 |
35 |
1.07 |
21.6 |
24.9 |
35 |
|
460-3-60 |
414/506 |
6.4 |
41.0 |
6.9 |
13.3 |
14.9 |
20 |
1.07 |
14.4 |
16.0 |
20 |
|
208/230-1-60 |
197/254 |
25.6 |
118.0 |
7.0 |
32.6 |
39.0 |
60 |
1.07 |
33.7 |
40.1 |
60 |
064 |
208/230-3-60 |
197/254 |
17.6 |
123.0 |
7.0 |
24.6 |
29.0 |
45 |
1.07 |
25.7 |
30.1 |
45 |
|
460-3-60 |
414/506 |
9.0 |
62.0 |
6.9 |
15.9 |
18.2 |
25 |
1.07 |
17.7 |
19.2 |
25 |
072 |
208/230-1-60 |
197/254 |
27.2 |
150.0 |
7.0 |
34.2 |
41.0 |
60 |
1.07 |
35.3 |
42.1 |
60 |
|
LEGEND |
FLA |
— Full Load Amps |
HACR |
— Heating, Air Conditioning and Refrigeration |
LRA |
— Locked Rotor Amps |
RLA |
— Rated Load Amps |
HWR |
— Hot Water Reheat |
*The 460-v units using an ECM (electronically commutated motor) fan motor, modulating HWR, and/or an internal secondary pump will require a neutral wire from the supply side in order to feed the accessory with 265-v.
13
14
BM ECM |
J1 |
|
S1 |
|
SW1 |
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SW2 |
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SW3 |
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SW4 |
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SW5 |
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SW6 |
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SW7 |
|
SW8 |
|
SW9 |
|
OFF |
ON |
ECM
INTERFACE
BOARD
W
O
Y2
Y1
G
R
G G G G R
BM ECM
J1 |
Y |
S1 |
CFM |
SW1 |
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SW2 |
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SW3 |
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SW4 |
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SW5 |
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SW6 |
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SW7 |
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SW8 |
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SW9 |
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OFF |
ON |
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G |
DEHUM |
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TB1 |
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C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
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LEGEND |
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AL |
— Alarm Relay Contacts |
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Field Line Voltage Wiring |
ASTAT |
— Aquastat |
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Field Low Voltage Wiring |
BM |
— Blower Motor |
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BR |
— Blower Relay |
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Printed Circuit Trace |
CB |
— Circuit Breaker |
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Optional Wiring |
CC |
— Compressor Contactor |
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CO |
— Sensor, Condensate Overflow |
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Relay/Contactor Coil |
DTS |
— Discharge Temp Switch |
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ECM |
— Electronically Commutated Motor |
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Condensate Pan |
FP1 |
— Sensor, Water Coil Freeze Protection |
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FP2 |
— Sensor, Air Coil Freeze Protection |
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Solenoid Coil |
HP |
— High-Pressure Switch |
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HWG |
— Hot Water Generator |
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Temperature Switch |
JW1 |
— Jumper, Alarm |
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LOC |
— Loss of Charge Pressure Switch |
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Thermistor |
MV |
— Motorized Valve |
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NEC |
— National Electrical Code |
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Ground |
P1 |
— Field Wiring Terminal Block |
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Wire Nut |
RVS |
— Reversing Valve Solenoid |
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TRANS |
— Transformer |
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ECM 
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, disconnect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Transformer for 220/240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. 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 Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. 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 dry contact will be available between AL1 and AL2.
7.Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.
9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 15 — Wiring of 50PTH,PTV,PTD026-072 Units with Complete C Controller, Single Phase (208/230 V)
BM (ECM)
SW1 |
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SW2 |
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SW3 |
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SW4 |
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SW5 |
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SW6 |
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SW7 |
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SW8 |
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SW9 |
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OFF |
ON |
ECM
INTERFACE
BOARD
15
LEGEND
AL |
— Alarm Relay Contacts |
P1 |
— Field Wiring Terminal Block |
|||||||||
ASTAT |
— Aquastat |
RVS |
— Reversing Valve Solenoid |
|||||||||
BM |
— Blower Motor |
TRANS |
— Transformer |
|||||||||
CAP |
— Capacitor |
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Field Line Voltage Wiring |
CB |
— Circuit Breaker |
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Field Low Voltage Wiring |
CC |
— Compressor Contactor |
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Printed Circuit Trace |
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CO |
— Sensor, Condensate Overflow |
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COMPR |
— Compressor |
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Relay/Contactor Coil |
DDC |
— Direct Digital Control |
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DTS |
— Discharge Temp Switch |
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ECM |
— Electronically Commutated Motor |
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Condensate Pan |
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FP1 |
— Sensor, Water Coil Freeze Protection |
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Solenoid Coil |
FP2 |
— Sensor, Air Coil Freeze Protection |
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HP |
— High-Pressure Switch |
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Thermistor |
HWG |
— Hot Water Generator |
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||
JW1 |
— Jumper, Alarm |
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Ground |
NSB |
— Digital Night Setback |
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Wire Nut |
LOC |
— Loss of Charge Pressure Switch |
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MV |
— Motorized Valve |
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NEC |
— National Electrical Code |
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BM (ECM) |
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J1 |
|
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Y |
W |
R |
S1 |
|
CFM |
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SW1 |
O |
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SW2 |
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G |
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SW3 |
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||
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SW4 |
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SW5 |
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Y2 |
G |
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SW6 |
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SW7 |
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SW8 |
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Y1 |
G |
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SW9 |
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OFF |
ON |
||
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||
G |
G |
TB1 |
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G |
DEHUM |
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R |
C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
ECM INTERFACE BOARD LAYOUT
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, disconnect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Transformer for 220/240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. 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 Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. 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 AL2 dry jumper and dry contact will be available between AL1 and AL2.
7.Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.
9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 16 — Wiring of 50PTH,PTV,PTD026-072 Units with Deluxe D Controller, Single Phase (208/230 V)
16
BM (ECM)
SW1 |
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SW2 |
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SW3 |
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SW4 |
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SW5 |
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SW6 |
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SW7 |
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SW8 |
|
SW9 |
|
OFF |
ON |
ECM
INTERFACE
BOARD
|
|
BM (ECM) |
|
|
J1 |
|
|
Y |
W |
R |
S1 |
|
CFM |
|
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SW1 |
O |
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SW2 |
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G |
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SW3 |
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||
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SW4 |
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SW5 |
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Y2 |
G |
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SW6 |
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SW7 |
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SW8 |
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Y1 |
G |
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SW9 |
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OFF |
ON |
||
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G |
G |
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G |
DEHUM |
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TB1 |
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R |
C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
|
LEGEND |
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AL |
— Alarm Relay Contacts |
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Field Line Voltage Wiring |
ASTAT |
— Aquastat |
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Field Low Voltage Wiring |
BM |
— Blower Motor |
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BR |
— Blower Relay |
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Printed Circuit Trace |
CB |
— Circuit Breaker |
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Optional Wiring |
CC |
— Compressor Contactor |
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CO |
— Sensor, Condensate Overflow |
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Relay/Contactor Coil |
DTS |
— Discharge Temp Switch |
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ECM |
— Electronically Commutated Motor |
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Condensate Pan |
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FP1 |
— Sensor, Water Coil Freeze Protection |
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FP2 |
— Sensor, Air Coil Freeze Protection |
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Solenoid Coil |
HP |
— High-Pressure Switch |
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||
HWG |
— Hot Water Generator |
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Temperature Switch |
JW1 |
— Jumper, Alarm |
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||
LOC |
— Loss of Charge Pressure Switch |
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Thermistor |
MV |
— Motorized Valve |
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NEC |
— National Electrical Code |
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Ground |
P1 |
— Field Wiring Terminal Block |
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Wire Nut |
RVS |
— Reversing Valve Solenoid |
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TRANS |
— Transformer |
|
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|
|
ECM INTERFACE BOARD LAYOUT
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, disconnect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Transformer for 220/ 240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. 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 Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. 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 dry contact will be available between AL1 and AL2.
7.Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.
9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 17 — Wiring of 50PTH,PTV,PTD026-072 Units with Complete C Controller, Three Phase (208/230 V)
BM 
(ECM)
SW1 |
SW2 |
SW3 |
SW4
SW5
SW6
SW7
SW8
SW9
OFF ON
ECM
INTERFACE
BOARD
17
LEGEND
AL |
— Alarm Relay Contacts |
P1 |
— Field Wiring Terminal Block |
|||||||||
ASTAT |
— Aquastat |
RVS |
— Reversing Valve Solenoid |
|||||||||
BM |
— Blower Motor |
TRANS |
— Transformer |
|||||||||
CB |
— Circuit Breaker |
|
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Field Line Voltage Wiring |
CC |
— Compressor Contactor |
|
|
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Field Low Voltage Wiring |
CO |
— Sensor, Condensate Overflow |
|
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Printed Circuit Trace |
||
COMPR |
— Compressor |
|
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||
DDC |
— Direct Digital Control |
|
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Relay/Contactor Coil |
DTS |
— Discharge Temp Switch |
|
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||
ECM |
— Electronically Commutated Motor |
|
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Condensate Pan |
FP1 |
— Sensor, Water Coil Freeze Protection |
|
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FP2 |
— Sensor, Air Coil Freeze Protection |
|
|
|
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Solenoid Coil |
HP |
— High-Pressure Switch |
|
|
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|
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||
HWG |
— Hot Water Generator |
|
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Thermistor |
JW1 |
— Jumper, Alarm |
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||
NSB |
— Digital Night Setback |
|
|
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|
|
|
|
|
|
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Ground |
LOC |
— Loss of Charge Pressure Switch |
|
|
|
|
|
|
|
|
|
|
Wire Nut |
MV |
— Motorized Valve |
|
|
|
|
|
|
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|
|
|
|
NEC |
— National Electrical Code |
|
|
|
|
|
|
|
|
|
|
|
BM (ECM) 
|
|
J1 |
|
|
Y |
W |
R |
S1 |
|
CFM |
|
|
|
SW1 |
O |
|
|
|
|
|
SW2 |
|
|
G |
|
|
|
|
SW3 |
|
||
|
|
|
|
|
|
SW4 |
|
|
|
|
|
|
|
|
SW5 |
|
|
Y2 |
G |
|
|
|
|
SW6 |
|
|
|
|
|
|
SW7 |
|
|||
|
|
|
|
|
|
|
||
|
|
|
|
|
|
SW8 |
|
|
Y1 |
G |
|
|
|
|
SW9 |
|
|
|
|
|
|
|
OFF |
ON |
||
|
|
|
|
|
|
|
||
G |
G |
TB1 |
|
|
|
G |
DEHUM |
|
|
|
|
|
|
|
|
|
|
R |
C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
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, disconnect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Transformer for 220/240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. 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 Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. 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 AL2 dry jumper and dry contact will be available between AL1 and AL2.
7.Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.
9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 18 — Wiring of 50PTH,PTV,PTD026-072 Units with Deluxe D Controller, Three Phase (208/230 V)
BM |
(ECM) |
SW1 |
|
SW2 |
|
SW3 |
|
SW4 |
|
SW5 |
|
SW6 |
|
SW7 |
|
SW8 |
|
SW9 |
|
OFF |
ON |
ECM
INTERFACE
BOARD
18
LEGEND
AL |
— Alarm Relay Contacts |
ASTAT |
— Aquastat |
BM |
— Blower Motor |
BR |
— Blower Relay |
CB |
— Circuit Breaker |
CC |
— Compressor Contactor |
CO |
— Sensor, Condensate Overflow |
COMPR |
— Compressor |
DTS |
— Discharge Temp Switch |
ECM |
— Electronically Commutated Motor |
FP1 |
— Sensor, Water Coil Freeze Protection |
FP2 |
— Sensor, Air Coil Freeze Protection |
HP |
— High-Pressure Switch |
HWG |
— Hot Water Generator |
JW1 |
— Jumper, Alarm |
LOC |
— Loss of Charge Pressure Switch |
MV |
— Motorized Valve |
NEC |
— National Electrical Code |
P1 |
— Field Wiring Terminal Block |
RVS |
— Reversing Valve Solenoid |
TRANS |
— Transformer |
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
Optional Wiring
Relay/Contactor Coil
Condensate Pan
Solenoid Coil
Temperature Switch
Thermistor
Ground
Wire Nut
BM (ECM) |
|
|
J1 |
|
|
Y |
W |
R |
S1 |
CFM |
||
|
|
SW1 |
O |
|
|
|
|
|
SW2 |
|
|
G |
|
|
|
|
SW3 |
|
||
|
|
|
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|
|
SW4 |
|
|
|
|
|
|
|
|
SW5 |
|
|
Y2 |
G |
|
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|
|
SW6 |
|
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|
|
SW7 |
|
|||
|
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|
||
|
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|
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|
|
SW8 |
|
|
Y1 |
G |
|
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|
|
SW9 |
|
|
|
|
|
|
|
OFF |
ON |
||
|
|
|
|
|
|
|
||
G |
G |
|
|
|
|
G |
DEHUM |
|
|
|
TB1 |
|
|
|
|
|
|
R |
C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
ECM INTERFACE BOARD LAYOUT
NOTES:
1.Compressor and blower motor thermally protected internally.
2.All wiring to the unit must comply with NEC and local codes.
3.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
4.Typical Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.
5.24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry contact will be available between AL1 and AL2.
6.Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
7.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.
8.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 19 — Wiring of 50PTH,PTV,PTD026-072 Units with Complete C Controller, Three Phase (460 V)
BM (ECM)
SW1 |
|
SW2 |
|
SW3 |
|
SW4 |
|
SW5 |
|
SW6 |
|
SW7 |
|
SW8 |
|
SW9 |
|
OFF |
ON |
ECM
INTERFACE
BOARD
19
LEGEND
AL |
— Alarm Relay Contacts |
P1 |
— Field Wiring Terminal Block |
||||||||||
ASTAT |
— Aquastat |
RVS |
— Reversing Valve Solenoid |
||||||||||
BM |
— Blower Motor |
TRANS |
— Transformer |
||||||||||
BR |
— Blower Relay |
|
|
|
|
|
|
|
|
|
|
|
Field Line Voltage Wiring |
CB |
— Circuit Breaker |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Field Low Voltage Wiring |
||
CC |
— Compressor Contactor |
|
|
|
|
|
|
|
|
|
|
|
|
CO |
— Sensor, Condensate Overflow |
|
|
|
|
|
|
|
|
|
|
|
Printed Circuit Trace |
DDC |
— Direct Digital Control |
|
|
|
|
|
|
|
|
|
|
|
|
DTS |
— Discharge Temp Switch |
|
|
|
|
|
|
|
|
|
|
|
Relay/Contactor Coil |
ECM |
— Electronically Commutated Motor |
|
|
|
|
|
|
|
|
|
|
|
|
FP1 |
— Sensor, Water Coil Freeze Protection |
|
|
|
|
|
|
|
|
|
|
|
Condensate Pan |
|
|
|
|
|
|
|
|
|
|
|
|||
FP2 |
— Sensor, Air Coil Freeze Protection |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
HP |
— High-Pressure Switch |
|
|
|
|
|
|
|
|
|
|
|
Solenoid Coil |
HWG |
— Hot Water Generator |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
JW1 |
— Jumper, Alarm |
|
|
|
|
|
|
|
|
|
|
|
Thermistor |
NSB |
— Digital Night Setback |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
||
LOC |
— Loss of Charge Pressure Switch |
|
|
|
|
|
|
|
|
|
|
|
Ground |
MV |
— Motorized Valve |
|
|
|
|
|
|
|
|
|
|
|
Wire Nut |
|
|
|
|
|
|
|
|
|
|
|
|||
NEC |
— National Electrical Code |
|
|
|
|
|
|
|
|
|
|
|
|
BM (ECM)
|
|
J1 |
|
|
Y |
W |
R |
S1 |
|
CFM |
|
|
|
SW1 |
O |
|
|
|
|
|
SW2 |
|
|
G |
|
|
|
|
SW3 |
|
||
|
|
|
|
|
|
SW4 |
|
|
|
|
|
|
|
|
SW5 |
|
|
Y2 |
G |
|
|
|
|
SW6 |
|
|
|
|
|
|
|
|
SW7 |
|
|
|
|
|
|
|
|
SW8 |
|
|
Y1 |
G |
|
|
|
|
SW9 |
|
|
|
|
|
|
|
OFF |
ON |
||
|
|
|
|
|
|
|
||
G |
G |
TB1 |
|
|
|
G |
DEHUM |
|
|
|
|
|
|
|
|
|
|
R |
C |
Y2 Y1 G |
O |
W |
C |
R DH AL1 A |
A |
AL1 |
ECM INTERFACE BOARD LAYOUT
NOTES:
1.Compressor and blower motor thermally protected internally.
2.All wiring to the unit must comply with NEC and local codes.
3.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
4.Typical Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.
5.24-v alarm signal shown. For dry alarm contact, cut AL2 dry jumper and dry contact will be available between AL1 and AL2.
6.Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
7.Fan motors are factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed tap “M” or “3” and connect to “H” or “2” for high speed or “L” or “4” for low speed.
8.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.
Fig. 20 — Wiring of 50PTH,PTV,PTD026-072 Units with Deluxe D Controller, Three Phase (460 V)
20 
LEGEND
8363-a50
Complete C
AL |
— Alarm Relay Contacts |
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Field Line Voltage Wiring |
ASTAT |
— Aquastat |
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Field Low Voltage Wiring |
BM |
— Blower Motor |
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Printed Circuit Trace |
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BMC |
— Blower Motor Capacitor |
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BR |
— Blower Relay |
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Optional Wiring |
CB |
— Circuit Breaker |
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CC |
— Compressor Contactor |
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Relay/Contactor Coil |
CO |
— Sensor, Condensate Overflow |
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DTS |
— Discharge Temperature Switch |
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Condensate Pan |
ECM |
— Electronically Commutated Motor |
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FP1 |
— Sensor, Water Coil Freeze Protection |
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Solenoid Coil |
FP2 |
— Sensor, Air Coil Freeze Protection |
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HP |
— High-Pressure Switch |
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Temperature Switch |
HPWS |
— High-Pressure Water Switch |
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HWG |
— Hot Water Generator |
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Thermistor |
JW1 |
— Clippable Field Selection Jumper |
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LOC |
— Loss of Charge Pressure Switch |
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Ground |
LON |
— Local Operating Network |
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MV |
— Motorized Valve |
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Wire Nut |
MVES |
— Motorized Valve End Switch |
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NEC |
— National Electrical Code |
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Relay Contacts - N.C. |
P1 |
— Field Wiring Terminal Block |
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Relay Contacts - N.O. |
RVS |
— Reversing Valve Solenoid |
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TRANS |
— Transformer |
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Low Pressure Switch |
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*Optional Wiring. |
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High Pressure Switch |
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Splice Cap |
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Circuit Breaker |
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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 freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5.Typical thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat 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 Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8.Aquastat is supplied with unit and must be wired in series with the hot leg to the pump. Aquastat is rated for voltages up to 277-v.
9.Optional LON wires. Only connect if LON connection is desired at the wall sensor.
10.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.
11.For low speed, remove BLK wire from BR “6” and replace with RED. Connect BLK and BRN wires together.
12.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”.
13.The 460-v units using an ECM (electronically commutated motor) fan motor, modulating HWR, and/or an internal secondary pump will require a neutral wire from the supply side in order to feed the accessory with 265-v.
Fig. 21 — Wiring of 50PTH,PTV,PTD026-072 Units with Complete C and LON Controller, Three Phase (460 V)
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