Chiltrix CX34 Installation And Operation Manual
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Chiltrix CX34 Installation And Operation Manual

Dc inverter air to water heat pump options for heating, cooling and domestic hot water
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Chiltrix Inc.
www.Chiltrix.com
DC INVERTER
AIR TO WATER HEAT PUMP
Installation and Operation Manual CX34
Options for Heating, Cooling and Domestic Hot Water
Version 1.6
1

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Summary of Contents for Chiltrix CX34

  • Page 1 Chiltrix Inc. www.Chiltrix.com DC INVERTER AIR TO WATER HEAT PUMP Installation and Operation Manual CX34 Options for Heating, Cooling and Domestic Hot Water Version 1.6...

  • Page 2: Table Of Contents

    Chiltrix Inc. www.Chiltrix.com Table of Contents Safety Precautions ........................3 CX34 components........................4 Hydronic piping and design guide ................... 5 Heat Pump Installation ......................14 Pump Installation ........................15 Valves G1, G2, G3 ......................... 24 Assistant Electric Heater ....................... 30 System Filling ........................

  • Page 3: Safety Precautions

    Chiltrix Inc. www.Chiltrix.com Safety Precautions NOTE: It is required to read the Safety precautions in detail before operation. The precautions listed below are very important for safety, please follow all safety precautions. General  Make sure that the ground wire in the building is securely connected to earth.

  • Page 4: Cx34 Components

    Chiltrix Inc. www.Chiltrix.com CX34 Components...

  • Page 5: Hydronic Piping And Design Guide

    Chiltrix Inc. www.Chiltrix.com Hydronic Piping and Design Guide Installation Methods Heating and Cooling (Heating Shown) Note: Primary Secondary Piping is NOT supported on this chiller. A buffer tank must be used for floor heating.
  • Page 6 See the examples on the following pages, maximum water flow for the CX34 is 6 gpm, design flow is 4.8 gpm. If necessary, a second PWM pump may be added to the loop and controlled by the CX34. The second water pump connections are always in parallel with the internal pump.
  • Page 7 Chiltrix Inc. www.Chiltrix.com A volume expander tank should be used when the loop volume is less than 5 gallons to keep the compressor from cycling. Using a Buffer Tank Primary / secondary piping is not supported, when connecting to a floor heating loop always use a buffer tank.
  • Page 8 Chiltrix Inc. www.Chiltrix.com Head Calculation Example: To calculate the head pressure for the correct water flow, the pipe length must be measured and all fittings counted. It is advisable to use flexible red oxygen barrier PEX piping to avoid as many elbows as possible. All fittings have an equivalent length of pipe already calculated, available on the next page under PEX Fittings Pressure Drops.
  • Page 9 The internal thermal expansion tank is 2 liters or .52 Gallons. The volume of the CX34 is 4.5 liters. An additional thermal expansion tank may be required for larger loops. There are many thermal expansion calculators on the internet, the following is an example.

  • Page 10: Freeze Protection

    Chiltrix Inc. www.Chiltrix.com Freeze protection...
  • Page 11 Chiltrix Inc. www.Chiltrix.com NOTE: When using CPVC piping it is highly recommended that you do not exceed a 25% glycol to water ratio. Environmental Stress Cracking, also referred to as ESC, may occur. Required flow per ton for various glycol % changes with the glycol %.
  • Page 12 2.75 tons: 30% glycol 2.57 GPM/ton (7.06 GPM) In the above example (and using Wilo head curve) you can see that head can be max 22 ft. for CX34 to deliver full heating capacity with 30% glycol. Internal CX34 WILO Pump Minimun pump speed can be set at P53, minimun speed should not be lower than 40%.

  • Page 13: Pipe Insulation

    Chiltrix Inc. www.Chiltrix.com Pipe Insulation All loop piping must be insulated per local and national mechanical codes. For design tips and a thickness calculator please visit http://www.armacell.us/knowledge-center/...

  • Page 14: Heat Pump Installation

    Chiltrix Inc. www.Chiltrix.com NOTE: The CX34 is shipped with the pump in a separate box attached to the top of the chiller. Please follow the directions below to install the “C4” internal pump. Heat Pump Installation Installation position Note: Installation must be carried out by professional personnel 1.

  • Page 15: Pump Installation

    Chiltrix Inc. www.Chiltrix.com Internal Pump Wiring Electronics cabinet Connect the C4 internal pump control wires to the terminal strip labeled (+ and -). When adding a booster pump wire both power and control wires in parallel with the internal Wilo pump wiring. Use the same terminals.
  • Page 16 Chiltrix Inc. www.Chiltrix.com The blue and brown pump control wires are connected to the (+ & -) on the terminal strip. Pump power wires. Pump ground wire.
  • Page 17 Chiltrix Inc. www.Chiltrix.com Clearances (unit: mm) 200mm = 8” , 350mm =14 “, 400=16”, 500=20”,1000=40”...

  • Page 18: Electric Connection

    Chiltrix Inc. www.Chiltrix.com Electric connection General Note! Electrical installation and service must be carried out under the supervision of a qualified electrician. Electrical installation and wiring must be carried out in accordance with the NEC. The heat pump must not be connected without the permission of the electricity supplier and must be connected under the supervision of a qualified electrician.
  • Page 19 Chiltrix Inc. www.Chiltrix.com Electric Connections and Component Locator...
  • Page 20 Chiltrix Inc. www.Chiltrix.com Using Internal PWM Pump System Layout with internal flow switch and Psychrologix Controller MODBUS connection.
  • Page 21 Chiltrix Inc. www.Chiltrix.com Second PWM Pump Wiring If the Wilo RS 25/7.5 PWM pump does not have the required pressure at the targeted flow rate, a second Wilo RS 25/7.5 may be added to increase the total pump pressure. This will double the head pressure at the targeted flow rate.
  • Page 22 Chiltrix Inc. www.Chiltrix.com When using a second NON-PWM water pump If you are not using DHW feature connect the fixed speed pump to C6L and C6N.
  • Page 23 Chiltrix Inc. www.Chiltrix.com When using a second NON-PWM water pump, use terminals C6L and C6N for relay coil power only. Do not connect a pump directly to C6L and C6N, always use a relay with a 240 vac coil. This pump will only run when the PWM pump is running.

  • Page 24: Valves G1, G2, G3

    When the DHW tank temperature is lower than 119°F, the compressor will start. Inside the CX34 there are three sensors wrapped in a bundle just above the compressor. DHW, Solar, and indoor ambient air temp. If you are using the DHW feature extend the sensor to the top of the tank, if you are using the solar feature extend the solar sensor to the solar tank.
  • Page 25 Chiltrix Inc. www.Chiltrix.com G1 Valve DHW and AC / Heating with two chillers in Parallel A booster pump must be installed in front of the G1 valve when installing the DHW option. The distance between the G1 valve and DHW tank must not exceed 25 feet.
  • Page 26 Chiltrix Inc. www.Chiltrix.com G1 Valve Wiring and Parameters Figure 1, this is the valve position when it is activated for DHW. Figure 2, this is the valve position when it is activated for Heating or Cooling. When the brown wire is connected to L1, the blue wire is connected to L2, and the black control wire is connected to G2L the valve is controlled by voltage at G2L.
  • Page 27 G2 Valve and C5 cooling water pump are preinstalled in the CX30SE. To enable the free cooling function P06 must be set to “0”, C17 will show the status. The main CX34 C5N port is connected to the Free Cooling Units C5N port, the CX34 G2L is connected to the FCU 3-way valve G2L port. With parameter P06 a “0”, the unit will operate as follows: When outdoor temperatures drop below 38F,...
  • Page 28 Switch. When parameter P50 is 1, the valve is configured as a solar pre-heat valve. The CX34 compares the solar tank temp and AC returned temp. When the solar tank temp – AC returned temp is ≥ 5 ℃, the 3- way valve G3 will be on;...
  • Page 29 Chiltrix Inc. www.Chiltrix.com G3 VALVE Seasonal Switch Valve G3 Ports...

  • Page 30: Assistant Electric Heater

    Chiltrix Inc. www.Chiltrix.com Assistant Electric Heater Parameters 56, 57 If you set parameter P56 to "0", E2 is the assistant electric heater control port, if you set parameter P56 to 1, E2 will be 2nd heat source control port. If the E2 port is the assistant electric heater control port, it is controlled by parameter P57.

  • Page 31: System Filling

    Close the middle ball valve “A”. The pump should be pumping away from the CX34 chiller. Run the pump until there are no more air bubbles coming out of the loop. After all air is expelled from the loop, close valve “B”...

  • Page 32: Air Purging

    All CXI fan coils have an air purge screw near the water inlet port, always purge the fan coils before starting the chiller. The CX34 chiller also has a bleeder valve with a ¼” clear tube attached to it located near the brazed plate heat exchanger.

  • Page 33: Wired Control Panel

    Chiltrix Inc. www.Chiltrix.com Wired Controller 1. Functions and features Cooling, Heating, DHW, cooling + DHW, heating + DHW mode of operation options, automatic fault detection, alarm processing, and energy control. 1. The 4 wire control cable can be extended up to 300 feet of 20 AWG or larger.
  • Page 34 Chiltrix Inc. www.Chiltrix.com (4) Shutdown button: Used to execute the shutdown command, when clicked it will pop up a confirmation window, click "OK" to execute the boot command, or click "Cancel" for no action. The shutdown command us used to take the chiller out of heating or cooling mode.
  • Page 35 Chiltrix Inc. www.Chiltrix.com Figure 1-3 (16) Time: Used to display and set the current time. When clicked, a pop-up showing the date and time is displayed, Figure 1-3. From left to right, and from top to bottom is the year, month, day, hour, minute, and second.
  • Page 36 Chiltrix Inc. www.Chiltrix.com SETTING PASSWORDS The application is used to set the user parameters, and set a password, as shown in Figure 1-5, minimum of 6 characters, maximum of 127. Figure 1-5 Description of the keypad function keys：  “<-”：Backspace key, used to delete a character.
  • Page 37 Chiltrix Inc. www.Chiltrix.com Figure 1-6 After the password is entered correctly, as shown in Figure 1-6, click "Exit" in the main menu or "X" in the task bar to exit the application. Figure 1-7 1.2 USER PARAMETERS (Figure 1-7)  Operation mode: Set the units’ operation mode.
  • Page 38 Chiltrix Inc. www.Chiltrix.com Figure 1-8 1.3 SYSTEM  Language: Default is English.  Screensaver: Sets the screen saver pop-up time.  Buzzer: Disables or uses the buzzer sound when the unit has an alarm.  Date & Time: you can set the machine date and time.
  • Page 39 Chiltrix Inc. www.Chiltrix.com Figure 1-9 Weekly Setting...
  • Page 40 Chiltrix Inc. www.Chiltrix.com 2 STATUS The status application is used to check the detailed status of the unit operation, such as compressor speed, fan speed, G1, G2, G3, G4 valves and so on. 2.1 State preview display interface a) Compressor: Displays the current working status of the compressor.
  • Page 41 Chiltrix Inc. www.Chiltrix.com Figure 2-2 2.3 Manufacturing Setting (Parameter Checking and Setting) “P Parameters” Press and hold the lower left side of the main window for more than 3 seconds to enter the factory setting confirmation window as shown in Figure 2-3, press "Confirm" Factory setting, or press "Cancel"...
  • Page 42 Chiltrix Inc. www.Chiltrix.com Figure 2-3 Enter the factory settings menus as shown in figure 2-4, the left is the "main menu", on the right are the "settings". Complete list of P parameters starts on page 46. For Multi-pages, click on the "main menu"...
  • Page 43 Chiltrix Inc. www.Chiltrix.com 2.5 Communication Setting Communication settings include settings for the protocol and baud rate. The interface is shown in Figure 2-5. Figure 2-5 2.6 OTHERS FUNCTIONS （1）Initialize the control panel: The initialization of the control panel function is used to initialize all parameters in the control panel.
  • Page 44 Touch the mode bar and the screen below will appear. Select the mode you want by touching the bar associated with the mode. AU Heat Mode and AU DHW Modes are not used on the CX34. Next, to set the temperature go back to the desktop and touch the “set target AC” icon.
  • Page 45 Chiltrix Inc. www.Chiltrix.com System Settings Shown Above Setting the target or Set Point Temperature Using the keypad select the desired temperature and touch the “ENT” icon.
  • Page 46 Chiltrix Inc. www.Chiltrix.com To Start the selected mode hit the Start button then “OK” Use this same sequence for all of the modes. To stop a mode touch the “shutdown” icon. Then touch “OK”.

  • Page 47: P-Parameter Setting

    Chiltrix Inc. www.Chiltrix.com “Press here” with finger turned sideways for 5 seconds. 3. Parameter Checking and Setting “MFG MODE” The detailed parameters of the manufacturer settings are described in the table below. NO Name scope/means Range, Meaning Default P00 Power-down recovery function 0：off；1：on...
  • Page 48 Chiltrix Inc. www.Chiltrix.com （ ） P31 Maximum speed of the fan 10-100 100 show1 00% 1-10（10=100%） P32 Heating fan speed control 1℃ 2～15℃ 2～15℃ temperature difference P33 Cooling Fan speed control 6℃ 5～18℃ 5～18℃ Temperature difference P34 Defrost method 0：Method 1； 1：Method 2 0：Method 1；...
  • Page 49 Chiltrix Inc. www.Chiltrix.com P64 AC water flow switch type selection 0=Water flow switch 0=Normal Water flow switch 1=flow meter 1=Water flow meter switch P65 AC minimum water flow (Sets P5) 9-80L/m 9-80L/m P68 air source heat pump -16~20℃ -16~20℃ 5℃...

  • Page 50: C-Parameter Checking

    Chiltrix Inc. www.Chiltrix.com 4. Parameter Checking Only Name Scope/means Range, Meaning C00 out pipe temp -30~97℃ -30~97℃ C01 compressor discharge temp -30~128℃ -30~128℃ C02 ambient temp -30~97℃ -30~97℃ C03 Suction temperature -30~97℃ -30~97℃ C04 Plate heat exchanger temp -30~97℃ -30~97℃...
  • Page 51 Chiltrix Inc. www.Chiltrix.com C20 P09 Status 0=Heating valid, AC heating valid= 0 valid 1= Heating invalid 1= invalid C21 P10 Status 0=cooling valid, 0=cooling valid, 1=cooling invalid 1=cooling invalid C22 high pressure switch status 1= on, 0= off 1= on, 0= off...
  • Page 52 Chiltrix Inc. www.Chiltrix.com C47 water pump types 0= AC Water pump 0= AC Water pump 1= EC Water pump 1= EC Water pump 1~10 （ 10 Show 100% ） C48 water pump1 speed (C4) 1~10 (10 means 100%) 1~10 （ 10 Show 100% ）...

  • Page 53: Initial Temperature Settings

    5 INITIAL TEMPERATURE SETTINGS *Note – Cooling set points refer to the CX34 outlet temperature, however, the system is managed by a ΔT controller. Default setting for cooling should be 7°C, therefore the controller returned temp would be set to 12°C. This will create a 44°F leaving water temperature which is the correct setting.

  • Page 54: Faults

    Chiltrix Inc. www.Chiltrix.com 7 FAULTS Touch the ERROR icon to access the current error. Fault application is used to query the current or historical fault, after entering the fault application, click on the main window of the "current fault" or "historical failure" can be switched to the corresponding interface.
  • Page 55 Chiltrix Inc. www.Chiltrix.com Figure 7-3 7.4 ABOUT The interface displays the touch screen and PLC version information, as shown in Figure 7-4. Figure 7-4...

  • Page 56: Error Codes

    Chiltrix Inc. www.Chiltrix.com 8. CX34 Error Codes, Error Meaning, and Reason Error code Error Meaning Reason Compressor discharge high temp Poor refrigerant or throttle is not normal protection (stop compressor) Outdoor air temp sensor open or short circuit Outdoor air temp sensor error...
  • Page 57 Chiltrix Inc. www.Chiltrix.com discharge Probe error Poor outdoor unit heat transfer System 2 antifreeze twice (stop compressor) (1) too much refrigerant; (2) throttle high pressure protection mechanism failure; (3) high voltage switch failure (1) less refrigerant; (2) throttle failure; (3) low-...
  • Page 58 Chiltrix Inc. www.Chiltrix.com Power voltage is too high or too low, the voltage protection voltage is normal after the machine to resume operation (motherboard detection) IPM Fault IPM module is damaged Compressor Drive Fault The compressor cannot start normally IPM detects that the compressor current is...

  • Page 59: Commissioning And Initial Test Run

    Refer to the chart on page 10. 1. With a hose and filling pump connected to the CX34 water system, and all air exhaust valves open in the water system, fill the water loop with water and glycol mixture. Keep the air exhaust valves open until there is a continuous flow of water and glycol mixture coming out of the air exhaust valve.

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