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Installation
Variable Refrigerant Flow System
Air Handling Unit (AHU) Application Kit
Models: 4EEVAKA40K1025
4EEVAKA40K1050
4EEVAKA64K1075
4EEVAKA64K1100
Only qualified personnel should install and service the equipment. The installation, starting up, and
servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could
result in death or serious injury. When working on the equipment, observe all precautions in the literature
and on the tags, stickers, and labels that are attached to the equipment.
February 2015
SAFETY WARNING
VRF-SVN44B-EN
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Summary of Contents for Ingersoll-Rand 4EEVAKA40K1025
- Page 1 Installation Variable Refrigerant Flow System Air Handling Unit (AHU) Application Kit Models: 4EEVAKA40K1025 4EEVAKA40K1050 4EEVAKA64K1075 4EEVAKA64K1100 SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
- Page 2 Introduction Read this manual thoroughly before operating or servicing this unit. WARNING Warnings, Cautions, and Notices Proper Field Wiring and Grounding Required! Safety advisories appear throughout this manual as Failure to follow code could result in death or serious required. Your personal safety and the proper operation of injury.
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Page 3: Table Of Contents
Table of Contents Preparing for installation ..........4 Recommended AHU Sizes . -
Page 4: Preparing For Installation
For optimal efficiency and system performance, verify that the correct AHU unit is installed to meet capacity needs. AHU internal heat exchanger volume AHU capacity (MBH) AHU Kit model Minimum Maximum Minimum Maximum 4EEVAKA40K1025 73 (1200) 92 (1500) 4EEVAKA40K1050 131 (2150) 164 (2688) 4EEVAKA64K1075 189 (3100) 236 (3875) - Page 5 Lower insulation Upper insulation Holder Cover Clamps (1) EEV wire length: 4EEVAKA40K1025/1050 = 6.6 ft (2 m) 4EEVAKA40K1075/1100 = 23.0 ft (7 m) Figure 3. Additional components and materials Inlet sensor holder, Outlet sensor holder, OD OD 0.27 in. (6.8 mm) 0.31 in.
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Page 6: Example Of Vrf System With Ahu Kit
Preparing for installation Example of VRF System with AHU Kit Main control board External Controller Note: When the controllers (the External Controller, a simple BAS, and a wired remote control) are installed simultaneously, the AHU kit does not have control priority; it operates according to the last request made. The simple BAS may not reflect the actual state of the AHU if the last control request to the AHU was made by a true BAS or one of the other types of controllers. -
Page 7: Installation
(Figure 4), and wiring diagrams. • Install the controller no further from the EEV kit than 6.6 ft (2 m) for 4EEVAKA40K1025/1050 and 23 ft (7 m) for 4EEVAKA40K1075/1100. • Avoid installing the controller in a location that is exposed to direct sunlight or rain. -
Page 8: Wiring
Installation Wiring Observe the following precautions when making electrical connections. WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. NOTICE Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. -
Page 9: Ahu Controller Wiring
Installation AHU Controller Wiring Connect power cable (208–230 Vac, 60 Hz) to terminals 1(L), 2(N). Connect the outdoor unit communication cable to terminals F1, F2. Connect the wired remote control to terminals F3, F4. Figure 6. AHU controller wiring diagram WIRED REMOTE COMMUNICATION Notes:... - Page 10 Installation Table 1. AHU wiring terminals terminals Description Cable type Specifications Vd/Vd Defrost signal 2 x 16 AWG (1.5 mm 1 phase 208–230 Vac, 60 Hz TR/TR Thermistor, return air temperature sensor 2 x 18 AWG (0.75 mm — TEI/TEI Thermistor, indoor coil inlet sensor (liquid pipe) 2 x 18 AWG (0.75 mm —...
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Page 11: Ahu Controller Sequence Of Operations
Installation Figure 8. External Controller wiring and configuration Terminal Signal Option (see Table 3, p. AC LAMP 1, 2 Error check output — 3, 4 Operation check output Digit 15 5, 6 On/Off input Digit 14 (1) To enable the AHU kit to be controlled by the External Controller, digit 15 must be set to “1”. -
Page 12: Simple Bas
Installation Simple BAS Wiring NOTICE Equipment Damage! A simple BAS must be connected to a DC power supply. Never connect a simple BAS to an AC power supply or the equipment will be damaged. Figure 9. Simple BAS wiring diagram Example Setpoint: 72°F (22 73°F (23... -
Page 13: Setting The Temperature
Installation Table 2. Operational Voltage Range in Relation to Temperature Setpoint (continued) Heating Temperature setpoint Cooling temperature setpoint Simple BAS voltage range °F (°C) °F (°C) 4.0–3.6 V 68.0 (20) 68.0 (20) 3.6–3.2 V 66.2 (19) 66.2 (19) 3.2–2.8 V 64.4 (18) 64.4 (18) 2.8–2.4 V... -
Page 14: Installing The Electronic Expansion Valve (Eev) Kit
• Install the EEV kit no further from the AHU controller than 6.6 ft (2 m) for 4EEVAKA40K1025/1050 and 23 ft (7 m) for 4EEVAKA40K1075/1100. • Install the EEV kit no further from the heat exchanger than 16.4 ft (5 m). - Page 15 Upper insulation Holder Cover Clamps (1) EEV wire length: 4EEVAKA40K1025/1050 = 6.6 ft (2 m) 4EEVAKA40K1075/1100 = 23.0 ft (7 m) Figure 11. EEV dimensions 5.75 in. (146 mm) Refrigerant flow in cooling mode A: High-pressure pipe from outdoor unit (IN): OD 3/8 in. (9.52 mm) B: High-pressure pipe to AHU heat exchanger (OUT): OD 3/8 in.
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Page 16: Installing Indoor Coil Inlet/Outlet Sensors
Installation Figure 12. EEV vertical tolerance limit Tolerance limit: ±15° from vertical Installing Indoor Coil Inlet/Outlet Sensors Important: Install correct sensor; check sensor usage on label. When installing indoor coil inlet/outlet sensors, follow the precautions given at the beginning of this section (“Installing the Electronic Expansion Valve (EEV) Kit”... - Page 17 Installation Figure 13. Indoor coil inlet/outlet sensor installation location Important: Check the sensor label to ensure that you are using the correct sensor for the intended application. Distributor Indoor coil inlet sensor holder Detail Pipe Header Indoor coil outlet sensor holder Sensor holder 3.
- Page 18 Installation 6. Wrap the insulation around the sensor holder and pipe. Insulation 7. Repeat Step 4 – Step 6 with the other indoor coil (inlet or outlet) sensor. Example 2: Installation with tape 1. Locate the following sensors and accessories: Cable tie 6.69 in.
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Page 19: Installing The Return Air Temperature Sensor
Installation 5. Wrap rubber tape around the aluminum tape. Rubber tape Sensor 6. Use cable ties to secure the sensor and the tape. 7. Wrap the insulation around the sensor holder and pipe. Insulation 8. Repeat Step 3 through Step 6 with the other (inlet or outlet) sensor. -
Page 20: Configuration
Configuration Configuration Use the Technician Utility Tool (TUT) to change the configuration of the AHU kit according to the following procedure: 1. At the Indoor Unit Option Writer screen on the TUT, select the desired option codes by referring Table 3, p. 21 Table 4, p. -
Page 21: Installation Option #1
Configuration Installation Option #1 With Installation Option #1, digit 2 is set to “2” . The options shown in Table 3 can then be set to the values in the right column. Table 3. Installation Option #1: Digit 2 = 2 Digit Option Set digit to... - Page 22 Configuration Table 3. Installation Option #1: Digit 2 = 2 (continued) Digit Option Set digit to... Heat setting compensation Removing condensate in heating mode Default Disable 3.6°F (2°C) Disable Heat setting compensation 9°F (5°C) Disable (1) Default setting value: 3.6 °F (2°C) 0: EEV step is minimum EEV step of stopped unit during oil...
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Page 23: Installation Option #2
Configuration Installation Option #2 With Installation Option #2, digit 2 is set to “5” . The options shown in Table 4 can then be changed to the values in the right column. Table 4. Installation Option #2: Digit 2 = 5 Digit Option Set digit to... - Page 24 Configuration Table 4. Installation Option #2: Digit 2 = 5 Digit Option Set digit to... 11–17 Set temperature for auxiliary Time delay for heat On auxiliary heat On No temperature offset No delay Controller variables for auxiliary heater No temperature offset 10 minutes No temperature offset 20 minutes...
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Page 25: Discharge Air Temperature Control
Discharge Air Temperature Control Discharge Air Temperature Control When using discharge air temperature control: • The target discharge air temperature setpoint can be set using the wired remote controller (refer to the wired remote controller installation guide: VRF-SVN59). • The discharge air temperature adjusts to meet the discharge air temperature setpoint only when the indoor unit is enabled. -
Page 26: Troubleshooting
Troubleshooting Troubleshooting Initial Checks Verify that: • Power voltage is 187–253 Vac. • All wiring connections are made according to the instructions in this manual. • The following voltage ranges are: – CN32: 11–13 Vdc (both ends) – IC02 G/O: 4.5–5.5 Vdc (both ends) –... -
Page 27: Sensor Open/Shorted Error
Troubleshooting Sensor OPEN/SHORTED Error One of the following error codes has been generated: (Return air temperature sensor OPEN/SHORTED) Outdoor unit and wired (Indoor coil inlet sensor OPEN/SHORTED) remote controller display (Indoor coil outlet sensor OPEN/SHORTED) (Discharge air temperature sensor OPEN/SHORTED) Bad connection between the return air temperature sensor and the AHU main control Cause board, or the sensor is damaged/corroded. -
Page 28: Fan Error
Troubleshooting Fan Error Outdoor unit and wired has been generated. remote controller display • Faulty AHU fan operation Cause • Missing or incorrect circuit system for fan feedback check. The AHU controller sends a fan operation status signal and the fan feedback signal stays OPEN for more than 10 seconds (AHU kit only). -
Page 29: Communication Errors
Troubleshooting Communication Errors Between the AHU kit and the Outdoor Unit Prior to Link Discovery Outdoor unit and wired has been generated. remote controller display Cause Communication error between the AHU kit and the outdoor unit prior to link discovery. Investigation Refer to Figure 18... - Page 30 Troubleshooting Communication Error Between the AHU kit and the Outdoor Unit After Link Discovery Outdoor unit and wired remote controller display Cause Communication error between the AHU kit and the outdoor unit after link discovery. Investigation Refer to Figure 19 for troubleshooting process.
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Page 31: Pre-Start Checks
Pre-start Checks Pre-start Checks After installation, perform the following pre-start checks: NOTICE Avoid Damage to the Communication Circuit! Do not measure the communication terminal with an insulation tester. Doing so will damage the communication circuit. 1. Ensure that the power and communication cables are properly connected. 2. - Page 32 Pre-start Checks • Ensure that the optional discharge air temperature sensor is correctly attached (see “Example of VRF System with AHU Kit” p. – The discharge air temperature sensor should be located downstream (> 39.4 in. [1 m]) from the heat exchanger. –...
- Page 33 Pre-start Checks VRF-SVN44B-EN...
- Page 34 The manufacturer optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, the manufacturer offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.IRCO.com.
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