FRIEDRICH WFPU17Z243C Universal Heat Pump User Manual

WFPU17Z243C Universal Heat Pump
User Manual

USE AND INSTALLATION INSTRUCTIONS

WFPU17Z243C Universal Heat Pump

Thank you very much for purchasing this Air Conditioner.
Please read this use and installation instructions carefully before installing and using this appliance and keep  this manual for future reference.
WARNING
This product can expose you to chemicals including Plumbism, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

NOTE:

• This air conditioner has been designed for the following temperatures. Operate the heat pump air-conditioner within this range.
  Mode| Outdoor operation temperature range rF °C)I
  ---|---
  Maximum| Minimum
  Cooling Operation| 122 (50)| 5 (-15)
  Heating Operation| 75 (24)| -13 (-25)
• Storage condition: Temperature -13-140°F (-25-60°C) Humidity 30%-80%

Safety precautions

1. This air conditioner uses new refrigerant HFC (R410A).

2. Since the max. Working pressure is 550 psig (3.8MPa) [R22:450 psig (R22:3.1 MPa)], some of the piping and installation and service tools are special.

3. This air conditioner uses power supply: 208/230V ~, 60Hz.

4. The outdoor unit must be installed with indoor unit equipped with TXV and ensure that the TXV can be opened to the maximum angle while running heating mode.

5. The outdoor unit must be matched with indoor unit refrigerant R410A.

6. For 24k outdoor unit, it must be connected with 24k indoor unit.
   For 36k outdoor unit, it can be connected with 36k indoor unit.
   For 48k outdoor unit, it can be connected with 48k indoor unit.
   For 60k outdoor unit, it can be connected with 60k indoor unit.

7. Specified filter drier is required on the liquid pipe when connecting the units.

8. Be sure that servicing equipment and replacement components are applicable for R-410A refrigerant.

9. Do not discharge R-410A refrigerant into the air, and when recover it, the cylunder service pressure rating must be over 550 psig. R-410A refrigerant systems should be charged with liquid refrigerant and the service pressure rating of the hoses used must be over 750 psig.

10. Leak defectors should be designed to detect HFC refrigerant.

11. R-410A refrigerant is only compatible with POE oils, which could absorb moisture rapidly, so do not expose it to the air, in case that it damages certain plastics materials.

12. Replace all the filter driers after maintenance.

Please read these SAFETY PRECAUTIONS carefully to ensure correct installation.

• Be sure to use a dedicates power circuit. Do not put other loads on the power supply.

• Be sure to read these SAFETY PRECAUTIONS carefully before installation.

• Be sure to comply with SAFETY PRECAUTIONS of installation manual. Definitions for identifying hazard levels are provided below with their respective safety symbol.
  WARNING: Hazards or unsafe practices which may result in severe personal injury or death.

• CAUTION: Hazards or unsafe practices which may result in minor personal injury or product or property damage.

• Please carefully file indoor and outdoor unit manual away for future reference.
  WARNING

• Installation should be performed by qualified licensed service provider.
  Improper Installation may cause water leakage, electrical shock, or fire.

• Install the equipment on a solid base that can support the unit weight.
  An inadequate base or incomplete installation may cause injury if the unit falls off the base.

• Use the specified type of wire to safely make electrical connections between the indoor and outdoor units. Firmly clamp the interconnecting wires so their terminals receive no external stresses.

• For wiring, use a cable long enough to cover the entire distance with no splicing. Do not connect multiple devices to the same AC power supply. Exceeding the allowable current due to bad contact or poor insulation, may cause fire
  or electric shock.

• After all installation is completed, check to make sure that there are no refrigerant leaks.
  Refrigerant gas leakage in interior spaces will create harmful substances when exposed to heat or flame.

• Perform the installation securely referring to the installation manual.
  Incomplete installation may cause personal injury due to fire, electric shock, equipment falling, or leakage of water.

• In accordance with the installation instructions for electrical work, please be sure to use a dedicated line.

• If the power supply circuit capacity or electrical work is not in place, it may cause a fire or electric shock.

• Secure electrical cover to indoor unit and service panel to outdoor unit.

• Failing to properly secure electrical cover or service panel may result in fire or electric shock

• Cut off the main power supply before the installation of indoor electronic PCB or wiring. Otherwise, it may cause electric shock.

• Equipment shall be in accordance with the state provisions for installation wiring.

• Carefully select the outdoor unit installation location in order to avoid people or other small animals contact with electrical components, please keep the outdoor unit of the surrounding environment clean and tidy.

• When installing or relocating equipment, make sure that no substance other than the specified refrigerant (R410A) enters the refriger- ant circuit.
  Presence of foreign substance such as air can cause abnormal pressure rise, mal function, or an explosion.
  CAUTION

• Perform grounding
  Do not connect the earth wire to a gas pipe, water pipe, lightning rod, or telephone earth wire.
  Defective grounding may cause electric shock.

• Do not install the equipment in a location where there is potential for an flammable gas leak.
  Flammable gas leaks in the area surrounding the equipment may cause an explosion.

• Tighten flare nuts with a torque wrench as specified in this manual.
  If tightened too tight, a flare nut may break after a long period and cause a leakage of refrigerant.

• Install an earth leakage breaker depending on the installation place (humid location).
  Failing to use earth leakage breakers in a humid environment may cause electric shock.

• Perform drainage/piping work securely according to the installation manual.

• If there is a defect in the drainage/piping work, water could drop from the unit and household goods could be wet and damaged.
  Safety instructions

• Do not let air enter the refrigeration system or discharge refrigerant when moving the air conditioner.

• This equipment is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person respon- sible for their safety.

• Children should be supervised to ensure that they do not play with the appliance.
  If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or other qualified person in order to avoid a hazard.

• The appliance shall be installed in accordance with national wiring regulations.

• Service shall only be performed as recommended by the equipment manufacturer.

• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.

• Means for disconnection, such as circuit breaker, which can provide full disconnection in all poles, must be incorporated in the fixed wiring in accordance with the wiring rules. It is necessary to allow the disconnection of the appliance from the supply after installation. Make sure the disconnection of the appliance from the supply when service and maintenance, a disconnection with a locking system in the isolated position shall be provided.
  The power supply connection to the appliance and interconnection between units/components shall be performed according to wiring diagrams and instructions in the product documentation.

• Details of type and rating of circuit breakers / ELB is detailed in below parts

• The information of dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures is detailed in below parts.

• This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.

• Instructions on additional charging of refrigerants are detailed below.

Diagram of refrigerant cycle & Wiring

Refrigerant flow diagram

Electrical wiring diagram

Note:
The Sl(signal) wire between the indoor and outdoor units is not indispensable, especially when the outdoor unit is connected to an indoor unit of a different brand. It is more energy-saving when the outdoor unit is connected to an indoor unit of the same brand by SI wire. However, it still can run without it.

Installation instructions

Transportation and handling before installation
Transport the product as close to the installation location as practical before unpacking.
* Handling Method .
When handling the unit, ensure the unit is balance, check. that connection is secure, then lift up smoothly.

1. Do not remove any packing materials.
2. Hang the packaged unit with two ropes, as shown in Fig. blow.

* Handling
Make sure the product is protected by package, cloth, or similar when It is being moved.

Installation locations selection
Before choosing the installation site, obtain user’s approval.

• Where it is not exposed to strong wind.

• Where adequate air flow is possible.

• Where it is not exposed to rain and direct sunshine.

• Where neighbors are not disturbed by operation sound or hot air.

• Where rigid wall or support is available to prevent the increase of operation sound or vibration.

• Where there is no risk of combustible gas leakage.

• Where it is at least 10ft (3m) away from the antenna of TV set or radio. An amplifier may be required for the affected device.

• Install the unit horizontally.

• Please install it in an area not affected by snowfall or blowing snow. In areas with heavy snow, please install a canopy, a pedestal and/or some baffle boards. 24 36K Over 12 in 1300mm)
  CAUTION:
  Avoid the following places for installation where air conditioner trouble can occur.

• Where there is machine oil.

• Salty places such as seaside.

• Where sulfide gas is generated such as a hot spring.

• Where there is high-frequency or wireless equipment.

NOTE:
When operating the air conditioner in low outside temperature, be sure to follow the instruction described below.

• Never install the outdoor unit in a location where air inlet/outlet side may be exposed directly to wind.
• To prevent exposure to wind, install the outdoor unit with the air inlet side facing the wall.
• To prevent exposure to wind, it is recommended to install a wind baffle on the air outlet side of the outdoor unit.

Drainage elbow and condensatedrain hose installation
Install drainage elbow and condensate drain hose

• The condensate water may drain from the outdoor unit po when the unit operates in heating mode. In order to In order w to enable reliable operation and protect the environment, it is necessary to install a drainage elbow and a condensate  drain hose to drain the condensate water.
• Preform drainage work before indoor unit and outdoor unit  Renee are installed and connected. Drainage elbow ,
• Connect the condensate drain hose [field-supplied, inside diameter: 3/5″ (15mm) ] as shown in the figure for drainage.

NOTE:
Do not use the drainage elbow in the cold region.
Drain may freeze and stop the fan operation.
Outdoor unit installation

1. Use washers when mounting the unit with bolts to the foundation.
2. When fastening the outdoor unit with the foundation bolts. Reference Fig 1. for fastener hole locations.
3. Fasten the outdoor unit as shown in Fig 2.
4. Make sure to fasten the outdoor unit tight and horizontal to make sure the unit operates correctly.
5. Make sure the condensate drain is routed away from places where it might do any harm.
6. Use a robust base for the equipment (made of concrete, etc.) The equipment should be installed no less than 4″ (10 cm) above grade level, to ensure proper drainage and operation. Failing to meet the installation requirements may reduce equipment life cycle. reduce its life time. (Fig.3)

Refrigerant piping

Piping requirement

The shorter the refrigerant piping is, the better the performance will be. Therefore, the connecting pipe should be as short as possible.

Refrigerant additional charge The outdoor unit is pre-charged with refrigerant to accommodate a total piping length of 25ft (7.6m). Additional refrigerant (R410A) is required for extending the piping beyond 25ft (7.6m). 24K/36K: Additional refrigerant charge= (L-25) ftx0.38 oz/ft 48K/60K: Additional refrigerant charge= (L-25) ftx0.60 oz/ft 2. Piping material (1) Prepare locally-supplied copper pipes. (2) Use clean copper pipes. Make sure that there is no dust and moisture inside the pipes. Blow the inside of the pipes with nitrogen or dry air to remove any dust or foreign material before connecting pipes.

3.Refrigerant piping work

1. Pipe cutting
   Cut the cooper pipe correctly with pipe cutter.

2. Burrs removal
   Completely remove all burrs from the cut cross section of the pipe.
   Orient the end of the copper pipe downward to prevent burrs from dropping in the pipe.

4. Piping connection

1. Confirm that the valves are closed.
2. Connect the indoor unit and the outdoor unit with field-supplied refrigerant pipes. The refrigerant piping should be brazed with a phosphorous-copper alloy material such as Silfos-5 or equivalent. baffle .
   Precautions and steps during brazing service valve: welding torch
   a. Remove the caps from both the liquid and gas service valve | des service ports at the outdoor unit.
   b. Braze the liquid piping and gas piping to the respective valve at di wet cloth the outdoor unit.
   Prior to brazing, wrap a wet cloth around each service valve to Ky prevent heat damage while brazing.

A baffle can be used to protect painted surfaces and insulation.
c. Cool joints and other heat sensitive components with a wet rag during brazing.

1. After connecting the refrigerant pipes, insulate the pipes according Clamprfel-supphed) Sulston (here sappy  on ccs and temperature/humidity conditions.
   For outdoor unit side, insulate all piping including valves. 2-H
   Cover piping joints with pipe cover.
   Using piping tape, apply taping starting from the entry of outdoor unit. As MALL.
   Secure the end of the piping tape with adhesive tape.
   – When piping has to be routed above ceiling, closet or area where (Teld- supplied) temperature and humidity are high, apply additional insulation a for prevention of condensation.

5. Air tight test

• Use Nitrogen.
  Using charging hose, connect the gauge manifold at the nitrogen  cylinder to the check joints of the liquid line and the gas line stop
  Perform the air-tight test. resell
  Don’t open the gas line stop valves.
  Apply nitrogen gas pressure of 550 psig (3.8 MPa). Air tight procedure Check for any gas leaks at the flare nut connections, or brazed parts utilizing gas leak detector or foaming agent.

6. Vacuum proceding and charge refrigerant * Vacuum pumping

1. Remove the service port cap of the stop valve on the gas pipe side of the outdoor unit.
2. Connect the manifold gauge and vacuum pump to the service port of the stop valve on the gas pipe side of the outdoor unit.
3. Run the vacuum for at least 15 minutes.
4. Check the vacuum with the gauge manifold valve, then close the gauge manifold valve and stop the vacuum pump.
5. Leave it as is for one or two minutes. Make sure that the pressure stays the same. Confirm that the pressure gauge shows -14.7 psig (-0.101MPa or -760mmHg).
6. Remove the manifold gauge quickly from the service port of the stop valve.
7. After refrigerant pipes are connected and evacuated, fully open all stop valves on both sides of gas pipe and liquid pipe.
8. Open adjusted valve to add refrigerant (liquid).
9. Tighten the cap to the service port .
10. Re-tighten the cap.
11. Leak test with foam, or halogen leak detector, to verify that flare nuts and brazing is tight. Carolina Department leaks. Use foam that does not generate ammonia (NH3) in the reaction.

Incorrect refrigerant charge (over or under charging) is the main cause for service issues. Charge the correct refrigerant quantity according to the installation manual.
Thoroughly check for refrigerant leaks. If a large refrigerant leakage occurs, it can be very harmful for people and also cause fire. (3) Piping thickness and material of the pipe are shown as below. ‘Additional refrigerant charge
The unit is pre-charged with refrigerant at the factory. See “Piping Requirement” to calculate additional charge. After vacuum pump procedure has been finished, first exhaust air from charge hose, then open valves, and charge refrigerant as “liquid ” through Liquid stop valve. When finished, please close valves and record the refrigerant charging quantity

Wiring
WARNING

• Turn OFF the main power switch to the indoor unit and the outdoor unit and wait for a minimum of 3 minutes before performing electrical wiring work or a periodical check.

• Make sure that the indoor and outdoor fans have stopped completely before performing electrical work or a periodical check.

• Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, fire could occur.

• Prevent the wiring from touching refrigerant pipes, plate edges, and electrical parts inside the unit.

• Install an ELB (Electric Leakage Break)in the power source.
  lf ELB is not used, it can cause electric shock or fire.

• This unit uses an inverter, which means that it must be used an earth leak detector capable handing harmonics in order to prevent malfunctioning of the earth leak detector itself.

• The use of intermediate connection wires, stranded wires(see ), extension cables or control line connection, is prohibited. The use of such connections may cause electric shock or fire.

• The tightening torque of each screw shall be as follows.
  M4: 0.7 to1f .0lb-. ft (1.0 to 1.3 N-m)
  M5: 1.5 to 1.8 Ib (2 f-ft. .0 to 2.5 N-m)
  M6: 3.0 to 3.7 Ib (4 f-ft. .0 to 5.0 N-m)
  M8: 6.6 to 8.1 Ib (9 f-ft. .0 to 11.0 N-m)
  M10: 13.3 to 217 Ib (18 f-ft. .0 to 23.0 N-m)
  Keep the above tightening torque when wiring work.
  CAUTION

• Seal all wiring holes to protect from moisture, insects, etc.

• ightly secure the power source wiring using the cord clamp inside the unit.
  Note: Secure the rubber bushing with adhesive when conduit tubes to the outdoor unit are not used.

General check

1. Make sure that the field-selected electrical components (main power switches, circuit breakers, wires, conduit connectors and wire terminals) have been properly selected according to the electrical data and that they all comply with National Electrical Code (NEC).
2. Ensure that the voltage of power supply Is within +10% of nominal voltage and earth/ground wire is connected at that power supply. Failing to do so will damage electrical components.
3. Ensure that the power supply is adequately sized. Failure to properly size the power supply may cause compressor malfunction or failure.
4. Ensure that the earth/ground wire is connected.
5. Install a main switch. Multi-pole main switch with a space of 0.14 in. (3.5mm) or more, single phase main switch with a space of 0.12 in. (3.0mm) or more between each phase.
6. Ensure that the electrical resistance is more than 2 MQ, by measuring the resistance between ground and the terminal of the electrical parts. If not, do not operate the system until the electrical leakage is found and repaired.

Wire connection steps:
24K/36K

1. Electric box cover removal
   Unscrew the mounting screws to remove the electric box cover.

2. Fasten the power supply cable and the transmission cable to the conduit holder using the lock nut.

3. Connect the power supply cable and the transmission cable to terminal.

4. Fasten the power supply cable and the transmission cable with the cable clamp.

5. Seal holes and gaps using putty.
   Place the cables side by side. (Do not overlap the cables. )

6. Re-install the electric box cover back after completion of the work.

1. Remove the screws, maintenance plate, and the valve cover.
2. Pass transmitting cable and power supply through the two holes on the right side plate.
3. Fasten the conduit connection to the right side plate using the lock nut.
4. Connect the transmission cable and power supply to the terminal.
5. Tie the transmission cable and power supply with the clamp tightly.
6. After completing the wiring, seal holes and gaps using putty.
7. Re-install the maintenance plate and the valve cover after completion of the work.

Electrical Data

Model (Capacity)

| Power Supply| ELB (Electrical Leakage Breaker)| Power Source Cable Size|

Transmitting Cable Size

---|---|---|---|---

Rated Current (A)

|

Nominal Sensitive Current (mA)

24k| 208/230V-/60Hz| 25| 30| 3×1 2AWG| 5x16AWG
36k| 208/230V-/60Hz| 35| 30| 3×1 OAWG| 5x16AWG
48k/60k| 208/230V-/60Hz| 50| 30| 3x8AWG| 5x16AWG

Max. Running Current (A): REFER TO NAMEPLATE
Note

1. Follow local codes and regulations when field selecting wires. All the above are the minimum wire sizes.
2. Transmission cable length is longer than 262ft. (80m), a larger wire size should be selected.
3. Install main switch and ELB for each system separately. Select the high response type ELB that is activat-ed within 0.1second. Recommended capacity to see outdoor equipment switch capacity.

Test run
Test run should be performed after refrigerant piping, drain, wiring, etc. have been finished.
CAUTION
The air conditioner is provided with a crankcase heater. Ensure that the main power supply has been turned ON for more than 6 hours ahead of power on preheating. Failure to do so may damage the compressor. Do not operate the system until all the check points have been cleared.
(A) Ensure that the stop valves of the outdoor unit are fully opened.
(B) Ensure that the electric wires have been fully connected.
(C) Ensure that the electrical resistance is more than 2M0, by measuring the resistance between ground and the terminal of the electrical parts. If not, do not operate the system until the electrical leakage is found and repaired.
Test run function identification Operate the thermostat to turn ON the equipment, then proceed test run. Pay attention to the following items while the system is running. Do not touch any of the parts by hand at the discharge gas side. Compressor chamber and pipes at the discharge side will reach temperatures in excess of 194°F(90°C).
Turn off the power after test run is finished. Installation of the equipment is complete after concluding the test run. For additional information, contact local technical service center of our company for further information.

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>