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Chiltrix cx30 Installation And Operation Manual

Air to water heat pump
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Chiltrix Inc.
www.Chiltrix.com
DC INVERTER
AIR TO WATER HEAT PUMP
AC series Heating & Cooling series CX30
Installation and Operation Manual
Version 1.7
1

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  • Page 1 Chiltrix Inc. www.Chiltrix.com DC INVERTER AIR TO WATER HEAT PUMP AC series Heating & Cooling series CX30 Installation and Operation Manual Version 1.7...

  • Page 2: Table Of Contents

    Chiltrix Inc. www.Chiltrix.com Table of Contents Safety Precautions ........................3 Components ..........................4 Hydronic piping and design guide ................... 5 Heat Pump Installation ......................14 Electrical Connections and Parts Locator ................16 Valves G1, G2, G3 ......................... 22 Master –Slave Wiring ......................28 AC Switch Funtion ......................

  • 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: Components

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

  • Page 5: Hydronic Piping And Design Guide

    See the examples on the following pages, maximum water flow for the CX30 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 CX30. The second water pump connections can be found in the wiring diagram starting on page 19.
  • Page 6 Chiltrix Inc. www.Chiltrix.com Piping Examples: Stacked Chillers With a Buffer Tank and Second Non-PWM Pump A buffer tank should be used when the loop volume is less than 10 gallons to keep the compressor from cycling.
  • Page 7 This formula is for the minimum size buffer tank. You can always add tank volume. Note – Cooling set points refer to the CX30 return water temperature, the system is managed by a 9F ΔT controller and is measured in C (5C). Default setting for cooling should be 12C, therefore the wired controller setting would be 17C.
  • Page 8 Chiltrix Inc. www.Chiltrix.com Example of head calculation 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 Chiltrix Inc. www.Chiltrix.com Notes: The example loop above has a volume of 4.5 gallons. The internal thermal expansion tank is 2 liters or .52 Gallons. 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, is a mechanism by which an organic chemical (possibly a weak solvent or even a non-solvent) achieves an extremely localized weakening at the surface of the material which permits propagation of a crack.
  • Page 12 Chiltrix Inc. www.Chiltrix.com Internal CX30 WILO Pump PWM pcb LED Error Codes (3 digit display) Normally the 3 digit display shows the pump speed percentage in addition to temperatures and sensor errors. E1 is a Th1 sensor error, it is open or shorted.

  • 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 Heat Pump Installation Installation position Note: Installation must be carried out by professional personnel 1. The recommended mounting pad should be 1” to 1 ½” above ground level. 2. A drainage path or other facilities should be arranged around the outdoor unit to avoid flooding the outdoor unit.
  • Page 15 Chiltrix Inc. www.Chiltrix.com Clearances (unit: mm) 200mm = 8” , 350mm =14 “, 400=16”, 500=20”,1000=40”...

  • Page 16: Electrical Connections And Parts Locator

    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 17 Chiltrix Inc. www.Chiltrix.com Electric Connections and Component Locator Using Internal PWM Pump System layout with external flow switch...
  • Page 18 Chiltrix Inc. www.Chiltrix.com System Layout with internal flow switch and MODBUS 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 19 Chiltrix Inc. www.Chiltrix.com Second PWM Pump Wiring Use proper splicing connectors to connect the second PWM pump in parallel to the internal PWM pump.
  • Page 20 Chiltrix Inc. www.Chiltrix.com When adding a second PWM pump (Wilo RS25/7.5), all wiring is done in parallel. Up to 4 PWM pumps can be wired to the PWM controller. They can be spliced into the wiring harness inside the refrigeration...
  • Page 21 Chiltrix Inc. www.Chiltrix.com When using a second NON-PWM water pump When using a second NON-PWM water pump, use terminals C6 and L2 for relay coil power only. Do not connect a pump directly to C6 and L2, always use a relay with a 240 vac coil. This pump will only run when...

  • Page 22: Valves G1, G2, G3

    Chiltrix Inc. www.Chiltrix.com G1 Valve DHW and AC / Heating G1: DHW/AC / Heating Valve In DHW mode, the G1 valve is powered off. In AC mode, G1 is powered on. Function Selection Switch: SW1 must be set for SW1-5 OFF to activate G1, SW1-5 ON to deactivate. SW1-6 “OFF”, DHW is activated, SW1-6 ON DHW is deactivated.
  • Page 23 Chiltrix Inc. www.Chiltrix.com G1 Valve DHW and AC / Heating with two chillers in Parallel Please remember to set dipswitch 1-6 to the off position for DHW, page 44. The power must be cycled after changing the switch settings.
  • Page 24 Chiltrix Inc. www.Chiltrix.com G1 Valve Wiring and Parameters...
  • Page 25 G2 Valve and C5 cooling water pump are preinstalled in the CX30SE. To enable the free cooling function dipswitch SW1-5 must be set to ON. The main CX30 C5 port is connected to the Free Cooling Units C5 port, the CX30 G2 is connected to the FCU 3-way valve G2 port. Parameters P29 and P31 have a factory default of 5°C, differential = 2°C.
  • Page 26 14. When parameter 14 is 0, the valve is configured as a seasonal Switch. When parameter 14 is 1, the valve is configured as a solar pre-heat valve. The CX30 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 27 Chiltrix Inc. www.Chiltrix.com G3 VALVE Seasonal Switch Valve Solar Preheat Valve...

  • Page 28: Master -Slave Wiring

    Chiltrix Inc. www.Chiltrix.com Master – Slave Wiring Heating Mode Only When using the master –slave configuration, the heater control port of the master unit is connected to the AC 2 switch port of the slave unit through a customer supplied relay. This port is activated when the master unit cannot reach the target temperature within 15 minutes.

  • Page 29: Nd Ac Switch Funtion

    Chiltrix Inc. www.Chiltrix.com 2nd AC Switch Function The 2nd switch function enables our heat pump to be controlled by any additional user's thermostat or remote switch for convenient control. Function: When the 2nd switch is off, the heat pump AC mode will enter standby mode no matter whether the AC water temp reaches its target or not.

  • Page 30: Second Heat Source Or Assistant Electric Heater

    Chiltrix Inc. www.Chiltrix.com Second Heat Source or Assistant Electric Heater Parameter 27, 28 usage If you set parameter 27 to "0", E2 is the assistant electric heater control port, if you set parameter 27 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 10.

  • Page 31: System Filling

    After all air is expelled from the loop, close valve “B” and then open valve “A” with the pump running. When the pressure gage on the CX30 shows at least 30 psi close valve “C” and turn off the pump. Minimum loop pressure is 14.5 psi, maximum pressure is 43.5 psi, and...

  • 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 CX30 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 CONTROL PANEL The control panel contains a LCD and 6 operational keys (as show below). It retains its memory when powered off and can be used as a timer. Icon meaning Icon meaning Icon meaning Green = Power on Orange = Compressor on Returned AC Temp.
  • Page 34 Chiltrix Inc. www.Chiltrix.com 1. Key functions (1) Three-colored indicator light: Green when in standby, Orange when the compressor is on, Red when there is an error code displayed. For more details, please check the fault code sheet at the back of this manual.
  • Page 35 Chiltrix Inc. www.Chiltrix.com Displays for the different modes Air source heat pumps icons (3) Powered off display If it has a timer on/off setting, there is a timer icon to indicate it. Timer display DHW display AC heating display cooling display...

  • Page 36: Initial Temperature Settings

    INITIAL TEMPERATURE SETTINGS *Note – Cooling set points refer to the CX30 outlet temperature, however, the system is managed by a 9°F ΔT controller and is measured in C (5°C). Default setting for cooling should be 12°C, therefore the controller returned temp would be set to 17°C.
  • Page 37 Chiltrix Inc. www.Chiltrix.com 2. Press the key to modify the time, then, press the key to confirm. This setting is only valid for one time. If you want to cycle the time please press the after setting the time, then press the key to confirm.

  • Page 38: Parameter Checking And Setting

    Chiltrix Inc. www.Chiltrix.com Parameter Checking and Setting Please press the M+ key for 3 seconds and enter parameter setting mode as show below. In this example “01” is the parameter code, and “78” is the parameter value. Use the key to move from NO.
  • Page 39 Chiltrix Inc. www.Chiltrix.com Air temp to start Free cooling + 3℃ Check/Set -16℃～20℃ (differential compressor cooling (SW1-2 must be set 2°C) to ON to valid this parameter) Air temp differential on parameter 29 to 5℃ Check/Set 3℃～15℃ If the air temp is...
  • Page 40 Use of Parameter 14, G3 3-way valve Function parameter: (1) When parameter 14 is 1, the CX30 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; when solar water tank temperature minus the air conditioning returned temperature is less than 2°C, G3 will be off.

  • Page 41: Parameter Checking Only

    Chiltrix Inc. www.Chiltrix.com Parameter Checking Only Press M for 3 seconds to search and check parameters. No. Name Range/meaning Status C0 Outdoor pipe temp. (AIN2) 0 ~ 97℃ check C01 Compressor exhaust gas temp. inverter: 0 ~ 97℃ check (AIN1) (0: disconnected;...
  • Page 42 Chiltrix Inc. www.Chiltrix.com C28 Electrical heater 2 1: ON; 0:OFF check C29 C4 water pump 1: ON; 0:OFF check C30 C5 water pump 1: ON; 0:OFF check C31 C6 water pump 1: ON; 0:OFF check C32 Functional parameter 0-99 (accumulated days from last...

  • Page 43: Controller Communications

    Chiltrix Inc. www.Chiltrix.com Wired Communications Controller (2 wire) The communication cable from the wired controller is plugged into the water control pcb and comes with a 16’ extension located in the cable bundle in the refrigeration compartment. It can also be extended to 300’ using 24 AWG wire or larger.

  • Page 44: Error Codes

    Chiltrix Inc. www.Chiltrix.com ERROR CODES When the machine has an error, the control will show “P” or “E” at the AC temp location and show the error code at the DHW temp location, press key to search more error codes that may have happened at the same time.
  • Page 45 Chiltrix Inc. www.Chiltrix.com Hot water temp. No flash Sensor open circuit or Reconnect the sensor sensor fault short circuit stop Measure the sensor compressor at DHW resistance at different temperatures, if it is out of range change the sensor. Solar water temp.
  • Page 46 Chiltrix Inc. www.Chiltrix.com Rating module PFC Flash IPM module (PFC) 1. Check if there is any burn error connection wire loose or marks on IPM PCB. IPM module defective. Compressor stopped Flash Power supply error, 1. Shut off the power supply...
  • Page 47 Chiltrix Inc. www.Chiltrix.com Exhausted gas temp. Flash’s 1. Reconnect the sensor. sensor fault 2. Measure the sensor times resistance at different temperatures, if it is out of range, change the sensor. Outdoor module Flash’s IPM temperature too high, 1. Disconnect the power...
  • Page 48 Chiltrix Inc. www.Chiltrix.com P2 Low pressure Flash’s 9 1. Low pressure switch 1. If the error displays before protection times loose or faulty. the compressor starts, it 2. Throttling device means low pressure switch (expansion valve) error. Please reconnect the...

  • Page 49: Commissioning And Initial Test Run

    Refer to the chart on page 10. 1. With a hose and filling pump connected to the CX30 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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