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Installation
and
Maintenance
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
Models:
Outdoor Units
(Low Ambient VRF Heat Pump);
<208/230V >
(H,Y)VAHP072B31CW, (H,Y)VAHP096B31CW,
(H,Y)VAHP144B31CW, (H,Y)VAHP168B31CW,
(H,Y)VAHP192B31CW, (H,Y)VAHP288B31CW
< 460V >
(H,Y)VAHP072B41CW, (H,Y)VAHP096B41CW,
(H,Y)VAHP144B41CW, (H,Y)VAHP168B41CW,
(H,Y)VAHP192B41CW, (H,Y)VAHP288B41CW
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS HEAT PUMP
AIR CONDITIONER.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
P00877Q
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Summary of Contents for Johnson Controls (H,Y)VAHP072B31CW
- Page 1 Installation Maintenance Manual INVERTER-DRIVEN MULTI-SPLIT SYSTEM HEAT PUMP AIR CONDITIONERS Models: Outdoor Units (Low Ambient VRF Heat Pump); <208/230V > (H,Y)VAHP072B31CW, (H,Y)VAHP096B31CW, (H,Y)VAHP144B31CW, (H,Y)VAHP168B31CW, (H,Y)VAHP192B31CW, (H,Y)VAHP288B31CW < 460V > (H,Y)VAHP072B41CW, (H,Y)VAHP096B41CW, (H,Y)VAHP144B41CW, (H,Y)VAHP168B41CW, (H,Y)VAHP192B41CW, (H,Y)VAHP288B41CW IMPORTANT: READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS HEAT PUMP AIR CONDITIONER.
- Page 3 Important Notice Johnson Controls Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls Inc. reserves the right to make changes at any time without prior notice. Johnson Controls Inc. cannot anticipate every possible circumstance that might involve a potential hazard.
- Page 4 4. Please contact your local agent or contractor as any issues involving installation, performance, or performed by a customer without the written consent of Johnson Controls, Inc. Performing any mechanical alterations on this product without the consent of the manufacturer will render your warranty null and void.
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Page 5: Table Of Contents
TABLE OF CONTENTS 1. Introduction ................................1 2. Important Safety Instructions ..........................1 3. Before Installation ..............................6 3.1 Factory-Supplied Accessories ........................6 3.2 Necessary Tools and Instrument List for Installation ..................7 3.3 Flaring and Joint ............................9 3.4 Line-Up of Outdoor Units ..........................11 3.5 Combinations of Indoor Units and Outdoor Units .................. -
Page 7: Introduction
If these devices are improperly adjusted or tampered with in any way, a serious accident can occur. Never bypass or jump-out any safety device or switch. Johnson Controls will not assume any liability for injuries or damage caused by not following steps prohibited as they…... - Page 8 Take the following precautions to reduce the risk of property damage. Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages. Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules could run inside of the electrical box, possibly causing electrical failures.
- Page 9 Controls uses only refrigerants that have been approved for use in the unit’s intended home country or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve. The refrigerant used in this unit this unit must comply with the country’s requirements with regard to refrigerant use and should be...
- Page 10 When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.
- Page 11 Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit Clamp electrical wires securely with a cable clamp after all wiring is connected to the terminal block. In addition, run wires securely through the wiring access channel. When installing the power lines, do not apply tension to the cables.
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Page 12: Before Installation
3. Before Installation Factory-Supplied Accessories Check to ensure that the following accessories are packed with the outdoor unit. inch (mm) Accessory 72 Type 96 Type Remarks Cable Clamp For Fixing Power Supply Wiring and PVC Tube Cable Band × 5 ×... -
Page 13: Necessary Tools And Instrument List For Installation
Necessary Tools and Instrument List for Installation Tool Tool Tool Handsaw Pliers Wire Cutters Phillips Screwdriver Pipe Cutter Gas Leak Detector Vacuum Pump Brazing Kit Level Refrigerant Gas Hose Hexagon Wrench Crimper for Solderless Terminals Megohmmeter Wrench Hoist (for Indoor Unit) Copper Pipe Bender Scale Ammeter... - Page 14 : Interchangeability is available with current R22 : Only for Refrigerant R410A (No Interchangeability with R22) : Prohibited : Only for Refrigerant R407C (No Interchangeability with R22) Interchangeability Reason of Non-Interchangeability and Attention with R22 Measuring Instrument and Tool ( : Strictly Required) R410A R407C Pipe Cutter,...
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Page 15: Flaring And Joint
Flaring and Joint Flaring Dimension inch (mm) Diameter -0.02 (-0.4) R410A 1/4 (6.35) 0.36 (9.1) 3/8 (9.52) 0.52 (13.2) 1/64 ~ 1/32R 1/2 (12.7) 0.65 (16.6) 5/8 (15.88) 0.78 (19.7) with hard temper pipe. 3/4 (19.05) Joint Selection the table below. <... - Page 16 Processing at Brazing Connection To prevent gas leakage at the brazing connection, refer to the table for the insertion depth and the gap for joint pipe. inch (mm) Diameter Min. Insertion Depth (A - D) 3/16 < D < 5/16 1/4 (6) (5 <...
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Page 17: Line-Up Of Outdoor Units
Line-Up of Outdoor Units (1) This outdoor unit series capacity range is from 72 MBH to 288 MBH. 144 MBH to 288 MBH are made of 72 MBH and 96 MBH combinations. (2) The outdoor unit of 144 to 288 MBH consists of the combination of two or three base units. The capacities not shown in the table below are unavailable. -
Page 18: Combinations Of Indoor Units And Outdoor Units
Combinations of Indoor Units and Outdoor Units Table 3.1 Indoor Unit Type List Capacity (MBH) Indoor Unit Type Ducted (High Static) (H,Y)IDH_B21S Ducted (Medium Static) (H,Y)IDM_B21S Ducted Ducted (Slim) (H,Y)IDS_B21S Ducted (EconoFresh) (H,Y)IDM_B21E DOAS (H,Y)DOA_B21S Ceiling-Mounted 4-Way Cassette (H,Y)IC4_B21S Ceiling-Mounted 4-Way Cassette Mini (H,Y)ICM_B21S Ceiling-Mounted 2-Way Cassette (H,Y)IC2_B21S Ceiling-Mounted 1-Way Cassette... -
Page 19: Caution About Outdoor Unit Installation
Caution about Outdoor Unit Installation When the installation and piping work for the multiple outdoor units are performed, it is required that the arrangement for outdoor units and piping length be determined. Perform the installation work in strict accordance with the following restrictions. NOTICE of the outdoor unit. -
Page 20: Outdoor Unit Installation
4. Outdoor Unit Installation Installation Location and Precautions To reduce the risk of serious injury or death, the following installation precautions must be followed. When installing the unit into… A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support. -
Page 21: Service Space
Service Space Additionally, adequate clearance is required for service maintenance access. (Unit: inch) Min. 59-1/16 Front Rear Side Side 19-11/16 30-1/8 Min. 19-11/16 + h2/2 Min. 11-13/16 + h1/2 < Side View > - If there are no walls on the front and rear sides, clearance for service access is required as follows: * Front Side: Minimum 19-11/16 inch (500mm) * Rear Side: Minimum 11-13/16 inch (300mm) * Right and Left Sides: Minimum 3/8 inch (10mm) - Page 22 1) Walls on Two Sides If units are installed adjacent to tall buildings where there are two open sides, the minimum rear side clearance must be at least 11-13/16 inch (300mm). • Single Installation • Multiple / Serial Installation (Unit: inch) No limit for No limit for No limit for...
- Page 23 3) Walls on Four Sides • Single Installation (Unit: inch) No limit for side wall height. Min. 11-13/16 + h1/2 Min. 7-7/8 Min. 7-7/8 ▼ No limit for side wall height. Min. 31-1/2 Front Side Open Min. 19-11/16 + h2/2 <Top View>...
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Page 24: Transportation And Installation Work
5. Transportation and Installation Work Transportation Transport the product as close to the installation location as practical before unpacking. When using a crane, hang the unit according to the description of the outdoor unit packing. Sling Belt Position CORRECT INCORRECT Sling Belt Sling Belt Square Hole... - Page 25 Take special care when hanging or moving the outdoor unit because its center of mass is off-center and unbalanced. See the diagram below. Center of Gravity inch (mm) Center of Gravity Voltage 68-1/8 Type (1,730) 20-7/8 22-13/16 208/230V (530) (580) (305) 19-11/16 21-5/8...
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Page 26: Handling Of Outdoor Unit
When using a forklift, do not insert forks into Do not apply excessive force to the squared the slots at the unit side panels. The unit can slots with forks or other materials. The bottom sustain damage. of the unit can become deformed. * Do not push the bottom base with forks. -
Page 27: Installation Work
Installation Work 5.3.1 Concrete Foundations (1) The height of the foundation should be more than 5-7/8 inch (150mm) above the ground. (2) Provide adequate drainage around the foundation. Details of Installing Anchor Bolt (Unit: inch) Min. 3-3/16 Anchor Bolt (M12) (Field-Supplied) Nut (Field-Supplied) 3/16 2-3/4... - Page 28 mats. Refer to Figure 5.3 for the location of holes for anchor bolts. (Unit: inch) 37-5/16 (Pitch for Anchor Bolts) 5-3/8 5-3/8 18-11/16 Min. 3-1/8 Vibration Proof Mat (3 portions of each front and rear) 4 - 1-1/2 x 9/16 Long Hole (Hole for Anchor Bolt (M12)) Figure 5.3 Positions of Anchor Bolts P00877Q...
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Page 29: Condensate Treatment
5.3.2 Condensate Treatment Condensation is discharged during heating and defrosting operations. (Rain water is also discharged.) Comply with the following conditions. (1) Choose a place where good drainage is available, or provide a drainage ditch. (2) Do not install the unit over walkways. Condensation can spill onto people. If installing the unit in such a place, utilize the additional condensation drainage pan. -
Page 30: Refrigerant Piping Work
6. Refrigerant Piping Work The pressure for this product is 601 psi (4.15MPa). The pressure required for refrigerant R410A is 1.4 times higher than that of the refrigerant R22. That means that the refrigerant piping for R410A refrigerant piping may rupture due to an excessive refrigerant pressure. Pay close attention to the piping thickness when using copper refrigerant piping. -
Page 31: Piping Materials
Piping Materials (1) Obtain locally-supplied copper pipes. (2) Use the copper pipe for refrigerant piping. (3) Pay close attention to pipe thickness. (4) Use clean copper pipes. Make sure there is no dust or moisture inside the pipes. Blow nitrogen or dry compressed air into the pipes to remove any dust or foreign materials before connecting them. - Page 32 connections to the system. are leak free upon completion of the work. NOTE: Apply Refrigerant Oil. [Ethereal Oil: FVC68D (Idemitsu Kousan Co. Ltd.)] Do not apply refrigerant oil to exterior flared surfaces. < Required Tightening Torque > Pipe Size Tightening Torque 1/4 inch (6.35 mm) 10.3 - 13.3 ft·lbs (14 - 18 N·m) 3/8 inch (9.52 mm)
- Page 33 [ Example for Pipe Support ] Outdoor Unit Treatment for Section of Fire Prevention Installing Parts for Piping: Install at Appropriate Intervals Multi-Kit Install Horizontally Indoor Unit [ Secure for Liquid Piping, Gas Piping ] NOTE: Gas Piping Due to changing refrigerant temperatures, gas and liquid piping will stretch.
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Page 34: Piping Connection Work
Piping Connection Work Comply with the restrictions for refrigerant piping (permissible length, height difference) in Section 6.5 “Piping Work Conditions” and “Piping Branch Restriction”. If not, the outdoor unit can become damaged or fail. The stop valves will be closed completely (factory-setting) when refrigerant piping connections are performed. Do not open these stop valves until all the refrigerant piping connections, airtight testing, and vacuuming have been completed. -
Page 35: Piping Connection Method
< Liquid Valve > Do not put refrigerant leakage may occur from the spindle part. (To prevent wrenches here. leakage, place two wrenches at the positions as shown at the right when removing and connecting piping. Model Type Tightening Torque Position both Flare Nut 72 and 96... - Page 36 Refer to Figure 6.2 for the position for piping connections. Unit: inch (mm) φ7/8 (22.2) Refrigerant Gas Piping Connection φ3/8 (9.52) Refrigerant Liquid Piping Connection Konckout Square Hole for Piping Cover 5-11/16 (145) 6-11/16 (170) Square Holes at Refrigerant Gas Piping Connection 8-1/16 (205) Front and Back Sides 6-11/16 (170)
- Page 37 Stop Valve (Gas) Stop Valve (Liquid) Flaring Liquid Pipe (Field-Supplied) Gas Pipe Elbow A (Field-Supplied) (Field-Supplied) NOTES: P00877Q...
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Page 38: Piping Work Between Outdoor Units
Piping Work between Outdoor Units Select the pipe size according to Section 6.4 “Piping Size between Outdoor Units”. For refrigerant piping between multiple outdoor units, use the optional piping connection kit. The arrangement for outdoor units should be determined depending on the piping direction when the refrigerant piping work and installation work are planned. - Page 39 (3) When piping length between outdoor units is 6.6 ft (2m) or more, an oil trap for the gas piping should be installed so that any accumulation of refrigerant oil cannot occur. Oil Trap Oil Trap Min. 7-7/8 inch Min. 7-7/8 inch Indoor Unit Side Indoor Unit Side Less than 6.6 ft...
- Page 40 combination. Regarding the piping work for Combination Unit, refer to the “Installation and Maintenance Manual” attached to the piping connection kit. Gas Line Ref. Piping Connection Liquid Line Ref. Piping Connection < Downward Piping Connection > Outdoor Unit A Base (Field-Supplied) Accessory Pipe (Z-Shape)
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Page 41: Piping Size Between Outdoor Units
Piping Size between Outdoor Units Base Unit Outdoor Unit Refrigerant Piping To Indoor Units inch (mm) Model Type 7/8 (22.2) 7/8 (22.2) Piping Size Liquid 3/8 (9.52) 3/8 (9.52) Two Units Combination (Indoor Unit on Left Side) (Indoor Unit on Right Side) Outdoor Unit A Outdoor Unit B Outdoor Unit B... - Page 42 Three Units Combination (Indoor Unit on Left Side) (Indoor Unit on Right Side) Outdoor Unit A Outdoor Unit B Outdoor Unit C Outdoor Unit C Outdoor Unit B Outdoor Unit A Piping Piping To Indoor Units Piping Piping To Indoor Units Connection Kit 2 Connection Kit 1 Connection Kit 1...
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Page 43: Piping Size And Multi-Kit Selection
Piping Size and Multi-Kit Selection For selecting the pipe sizes between the outdoor unit and the piping connection kit, the piping size between the piping connection kits and piping connection kit , refer to Section 6.4 “Piping Size between Outdoor Units”. Outdoor Outdoor Outdoor... - Page 44 Piping Size < inch (mm) > [Main Pipe Diameter] (Base Unit or Piping Connection Kit 1 to First Branch) Equivalent Piping Length Outdoor Unit Capacity < 328.1 ft (100m) > 328.1 ft (100m) *1) (MBH) Liquid Liquid 72, 96 7/8 (22.2) 3/8 (9.52) 1-1/8 (28.58) 1/2 (12.7)
- Page 45 Comply with the following when installing the unit. [ Example ] Upstream Side < For two and three units combination > Outdoor Outdoor Outdoor Unit Unit Unit Indoor Unit Side Piping Piping Connection Kit 1 Connection Kit 2 First Branch Indoor Indoor Indoor...
- Page 46 Allowable Piping Length < the recommended > the recommended Item Mark number of connected number of connected indoor unit indoor unit Total Piping Length < 1,640 ft (500m) < 984 ft (300m) Actual Length < 541 ft (165m) < 541 ft (165m) Maximum Piping Length Equivalent Length <...
- Page 47 In the following instances, there is no limit to the number of main piping branches. (Example 1) : Installation with Main Piping Branch ( ) 90m). (1) If the pipe length L2 is over 131.2 ft (40m), the size of gas and liquid pipes “b and c” or “g and h” should be selected according to Table below, “Diameter of Pipe after First Branch”.
- Page 48 A header branch can be used with a line branch at the three pipes segment and two pipes segment. A header branch can also be used after the second branch. Do not connect a line branch to a header branch to the farthest indoor unit is within 131.2 ft (40m). Within 131.2 ft Line Branch Line Branch...
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Page 49: Multi-Kit Connection
Multi-Kit Connection Use the branch piping kit to ensure proper piping. Do not use a T-Joint. Secure the branch pipes horizontally to a pillar, a wall, or a ceiling. NOTE: When installing the piping by securing plates, wrap the branch pipe with an insulation or slip a cushioning between the pipe and the plate. -
Page 50: Electrical Wiring
When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements. -
Page 51: General Check
When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements. - Page 52 (1) Power Source Wiring Supply the power sources to each outdoor unit and indoor unit group respectively. Using this method is a basic principle of power supply wiring. GFCI (Ground Fault Circuit Interrupter) Outdoor Unit Power Source S (Main Switch and Fuse) AC 3~ 208/230V 60Hz AC 3~ 460V 60Hz Power Supply Wiring (O.U.)
- Page 53 When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.
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Page 54: Electrical Wiring For Outdoor Unit
TB2 terminals 3 and 4 on the PCB1. When shielded cabling is applied (M4), proper bonding and termination of the cable shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements. -
Page 55: Electrical Wiring Connections Of Indoor Unit, And Outdoor Unit
Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements. (Do not use Tri-Core or anything beyond.) - Page 56 (6) Use the same kind of cables in the same H-LINK system. (7) Maintain at least 5 inch (127mm) between the communication cables and the power supply wiring, and also min. 5 ft (1.5m) between the communication cables and power supply wiring for other electrical device.
- Page 57 Outdoor Unit A (Main) Outdoor Unit B (Sub) L1 L2 L3 1 2 3 4 L1 L2 1 2 3 4 Ground Ground Main Switch TB : Terminal Block PCB : Printed Circuit Board : Field Wiring : Communication Line GFCI GFCI DC5V (Non-Pole Communication H-LINK System)
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Page 58: Dip Switch Setting Of Outdoor Unit
DIP Switch Setting of Outdoor Unit Turn OFF all power sources before performing settings. and 6 pins of DSW4, No.4 pin of DSW7 and push switches can be operated when power source is ON.) The darkened square “ ” indicates the position of DIP switches. NOTE adjustment is made. - Page 59 Setting for Transmitting Setting the outdoor unit Nos., refrigerant system Nos. and end terminal resistance for this H-LINK system. Setting of Outdoor Unit No. If there are combined outdoor units, set DSW6 as shown below. Combination of Base Unit Base Unit Unit A Unit B Unit C...
- Page 60 Voltage DSW7 Setting DSW7 is used for setting of rated voltage for the outdoor unit as shown at right. 208V 1 2 3 4 When the site power source voltage is different from factory setting, a DSW7 setting is required. 230V NOTE: 1 2 3 4...
- Page 61 Function Setting External Input/Output and Function Setting Make sure to perform external input/output and function setting while the outdoor unit is stopped. It cannot be set while the outdoor unit is operating or check mode. Details of Checking Mode should be [ External Input/Output Setting ] [ Function Setting ] according to the exhibit of...
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Page 62: Additional Refrigerant Charge
8. Additional Refrigerant Charge Airtight Test (1) Check to ensure that spindles of the stop valves for gas and liquid pipes are closed completely before airtight test. (2) The refrigerant used for this outdoor unit is R410A. Use the manifold gauge and the charging hose for exclusive use of R410A. - Page 63 < Airtight Test Method > (1) Connect the manifold gauge to the check joints of the liquid line and the gas line stop valves using charging hoses with a vacuum pump or a nitrogen cylinder. Perform the airtight test. Do not open the stop valves. Apply nitrogen gas pressure of 601 psi (4.15MPa). leaking part.
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Page 64: Vacuuming
Vacuuming (1) Connect a manifold gauge and vacuum pump to the check joints (Gas Stop Valve and Liquid Stop Valve). (2) Continue vacuum pumping work until the pressure reaches -14.5 psi (-0.1MPa, -756mmHg) or lower for one to two hours. Once the desired vacuum pressure has been reached, turn OFF the pump and leave the gauge for one hour. - Page 65 (b) Operate the compressor in the cooling mode and charge the additional refrigerant from the check joint of the liquid stop valve. An acceptable error must fall within 1.1 lbs (0.5 kg). At this time, keep the liquid stop valve slightly open. (c) After the refrigerant is charged, fully open the liquid stop valve and the gas stop valve.
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Page 66: Additional Refrigerant Charge Calculation
Additional Refrigerant Charge Calculation Table 8.1 Additional Refrigerant Charge Calculation Although this unit has been charged with refrigerant, an additional refrigerant charge is required according to piping length. Determine what additional quantity of refrigerant according to the following procedures, and charge it into the system. -
Page 67: Automatic Simple Judgment System For Refrigerant Amount
< Max. Additional Refrigerant Charge Quantity Allowed > Outdoor Unit Capacity (x 1,000 Btu/h) 72, 96 144 - 192 Max. Additional Ref. Charge Quantity (lbs) 61.7 112.5 138.9 < Initial Ref. Charge Amount of O.U. (Before Shipment) (W0 lbs) > Outdoor Unit Capacity (x 1,000 Btu/h) 72, 96 W0 Outdoor Unit Ref. - Page 68 (1) Refrigerant quantity check operation can be performed using the automatic judgment function after completing refrigerant charging, but depending on the installation and conditions, the result may be with the refrigerant amount calculated in the previous section regardless of this automatic judgment function result.
- Page 69 Wait for at least three minutes after turning OFF the No.4 pin of DSW5 OFF and then the outdoor unit is ready to run. NOTE: During the check of refrigerant quantity operation, the 7-segment display may change over to display the protection control code by the activation of protection control.
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Page 70: Test Run
9. Test Run Test Run should be performed in accordance with Section 9.2. Use Table 9.1 for recording the Test Run. An electrical shock will occur if there is residual voltage. Turn OFF power at the power source completely before attempting any electrical maintenance work. Verify that no residual voltage exists after turning OFF the power at the power source. - Page 71 Caution for Insulation Resistance If the total unit insulation resistance is lower than one megaohm, the compressor insulation resistance may be lower, due to refrigerant being retained in the compressor. This can occur if the unit has not been used over prolonged periods of time. itself.
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Page 72: Test Run
Test Run This test run method is for the wired controller. As for other controllers, refer to the “Installation and Maintenance Manual” attached to each controller. (1) Check to ensure that stop valves for gas and liquid of the outdoor unit are fully opened. (In the case of combined outdoor units, check to ensure that all stop valves of the outdoor units are fully opened.) (2) Perform the test run of indoor units one by one sequentially, and then check the accordance of the... - Page 73 (d) Press “ ” or “ ”, select “LOUV.” and select “ ” (auto swing) by pressing “ ” or “ ”. The auto-swing operation will start. Check the operating sound at the louvers. If an abnormal sound emanates from the louvers, it may be caused by a deformation in the decorative panel due to incorrect installation.
- Page 74 DIP Switch Setting Operation Remarks 1. Setting of Operation Mode 1. The indoor unit automatically * Note that indoor units operate in starts operating when the test run conjunction with the test run operation Cooling: Set No.2 pin of DSW4 OFF. of the outdoor unit is set.
- Page 75 Table 9.1 Test Run and Maintenance Record MODEL: SERIAL. No. COMPRESSOR MFG. No. CUSTOMER'S NAME AND ADDRESS: DATE: 1. Is the rotation direction of the indoor fan correct? 2. Is the rotation direction of the outdoor fan correct? 3. Are there any abnormal compressor sounds? 4.
- Page 76 Table 9.2 Alarm Code Code Category Content of Abnormality Leading Cause Activation of Float Switch (High Water Level in Indoor Unit Activation of Protection Device (Float Switch) Condensation Drainage Pan, Problem with Drain Piping, Float Switch, or Condensation Drainage Pan) Activation of Protection Device Activation of PSH (Pipe Clogging, Excessive Outdoor Unit...
- Page 77 Code Category Content of Abnormality Leading Cause Incorrect Capacity Code Setting of Combination Incorrect Capacity Setting of Outdoor Unit and Excessive or Insufficient Indoor Unit Total Indoor Unit Capacity Code Incorrect Setting of Indoor Unit No. Duplication of Indoor Unit No. in same Refrigerant Group System Incorrect Indoor Unit Combination Indoor Unit is Designed for R22...
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Page 78: Safety And Control Device Setting
Compressor Protection The compressor is protected by the following devices and their combinations. (1) High Pressure Switch: This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting. (2) Oil Heater: This band type heater protects against oil foaming during cold starting, as it is energized while the compressor is stopped. - Page 80 © 2016 Johnson Controls, Inc. P00877Q Code No. LIT-12012285 Issued March, 2016...
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