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Chiltrix CX45 Installation And Operation Manual

Dc inverter air to water heat pump
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DC INVERTER
AIR TO WATER HEAT PUMP
AC series Heating & Cooling series CX45
Installation and Operation Manual
Version 1
1

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Summary of Contents for Chiltrix CX45

  • Page 1 DC INVERTER AIR TO WATER HEAT PUMP AC series Heating & Cooling series CX45 Installation and Operation Manual Version 1...

  • Page 2: Table Of Contents

    Table of Contents Safety Precautions ........................3 Components ..........................4 Hydronic piping and design guide ................... 5 Heat Pump Installation ......................32 Electrical Connections ......................34 System Filling ........................42 Control Panel ......................... 44 Parameter Checking and Setting ................... 47 Parameter Checking Only ......................

  • Page 3: Safety Precautions

    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. Wiring tasks should be carried out by qualified electricians only, in addition, they should check the safety conditions of power utilization, for example, verify that the line capacity is adequate, and the power cable isn’t damaged.

  • Page 5: Hydronic Piping And Design Guide

    Hydronic Piping and Design Guide Installation Methods Heating and Cooling (Heating Shown) Typical Reverse Return Piping No Buffer Tank Installation Notes: 1. Minimum pipe size should be no less than 1”, CPVC or PEX, reverse return piping is preferable to eliminate balancing valves or pressure regulators.
  • Page 6 Piping Examples: Stacked Chillers With a Buffer Tank and Second Non-PWM Pump A Buffer tank should be used if the total loop volume is less than 27 gallons. Set parameter 26 to 1, move the temperature sensor (6) IN2, 63F chiller, to the middle of the tank. The pump in the buffer tank drawing is controlled by the fan coil control board.
  • Page 7 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, see the chart on page 8, and example above.
  • Page 8 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. There are many thermal expansion calculators on the internet, the following is an example. http://westank.com/calculator/ Minimum loop pressure is 14.5 psi, maximum pressure is 43.5 psi, and ideal pressure is 29 psi.
  • Page 9 Freeze protection...
  • Page 25 Friction Loss, Steel, Copper and CPVC Pipe 3/4 inches Volume Flow Volume Flow Velocity Friction Head Friction Loss (gal/min) (gal/hr) (ft/sec) (ft/100 ft) (psi/100 ft) 10.5 20.0 1 inches Volume Flow Volume Flow Velocity Friction Head Friction Loss (gal/min) (gal/hr) (ft/sec) (ft/100 ft) (psi/100 ft)
  • Page 26 1 1/4 inches Volume Flow Volume Flow Velocity Friction Head Friction Loss (gal/min) (gal/hr) (ft/sec) (ft/100 ft) (psi/100 ft) 1 1/2 inches Volume Flow Volume Flow Velocity Friction Head Friction Loss (gal/min) (gal/hr) (ft/sec) (ft/100 ft) (psi/100 ft) 0.03...
  • Page 27 Selecting the proper circulator (Taco used as example) When using a buffer tank a second non-PWM circulator can be used be used. The head calculation must be done using the buffer tank output to the fan coil side of the loop. This will be used to select a circulator using the instructions below.
  • Page 28 negligible, and thus the smaller circulator might still be a suitable selection. However, it is generally considered poor practice to select a circulator that yields flow rates less than the calculated target flow rate for the system. Another option, the designer could investigate before making the final circulator selection is using larger piping. In addition to selecting a circulator that produces a flow equal to or slightly above the target value, other factors should be considered: Additional Notes...
  • Page 29 If two or more circulators are used in parallel, be sure to include a check valve downstream of each circulator to prevent reverse flow should one circulator be inoperable. 4. Be very careful when selecting circulators with steep pump curves for use in high temperature systems. The potential for vaporous cavitation within the circulator is higher in such situations.
  • Page 30 engineered to minimize the total impact of the built-in flow check, hence the smaller pump curve shift. Just the difference of using a 008-IFC versus a standard 008 can be seen in the flow output of the circulator at a given head loss.
  • Page 31 Internal CX30 WILO Pump Pipe Insulation All loop piping must be insulated per local and national mechanical codes. For For design tips and a thickness calculator please visit http://www.armacell.us/knowledge-center/...

  • Page 32: Heat Pump Installation

    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 33 Clearances (unit: mm) 200mm = 8” , 350mm =14 “, 400=16”, 500=20”,1000=40”...

  • Page 34: Electrical Connections

    Electric connections 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 35 Electric connections Using Internal PWM Pump 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 36 Second PWM Pump Wiring Use proper splicing connectors to connect the second PWM pump in parallel to CN6.
  • Page 37 When using a second NON-PWM water pump When using a second NON-PWM water pump, use terminals C6 and L2 for power.
  • Page 38 Seasonal Switch Valve The G3 port can be used to control a seasonal switch valve. The seasonal switch valve is used to isolate the floor coils (if needed) from the fan coils when switching over from heating to cooling. The seasonal switch valve is controlled by parameter 14. When parameter 14 is 0, the valve is configured as a seasonal Switch.
  • Page 39 G3 VALVE Seasonal Switch Valve/ Solar Pre-heat Valve...
  • Page 40 G1 Valve DHW and AC...
  • Page 41 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. This port is activated when the master unit cannot reach the target temperature within 15 minutes. The slave unit must be turned on and heating mode must be selected.

  • Page 42: System Filling

    System filling with Propylene Glycol and water At or near the chiller a flush/fill valve assembly must be installed. This can be made with three ball valves and a couple hose fittings. See example below. Pre-mix the propylene in a container large enough to hold the loop volume. Using a filling pump and 3 hoses, place one hose in the glycol container and connect it to the suction side of the pump, prime the pump, then connect the other hose to the pump discharge and the other end to the valve “C”...
  • Page 43 Close the input valve to each fan coil except the last coil (4). Turn the pump on and run it, when the bubbles stop coming out of the discharge hose turn on the ball valve on coil (1), wait for the bubbles to stop, then do the same for coil number (2), then (3). All CX Chillers are required to have a flow switch installed in the loop.

  • Page 44: Control Panel

    CONTROL PANEL The control panel contains a LCD and 6 operational keys (as show below). It retains its memory when powered off and be used as a timer. 1. Key functions (1) Two-colored indicator light: when in standby, the blue light is on; when the compressor is on, the red light is on;...
  • Page 45 (4) Key “down”: it’s a combined key to decrease the numerical value. Continuous pressing causes a continuous decrease. Short pressing increases the value by one. (5) Key “up”: it’s a combined key also, but just the opposite to the down key. Continuous pressing causes a continuous increase.
  • Page 46 Detailed settings as follows: Selected Default No. Meaning Operation for modifying settings temperature range temperature AC cooling returned 10°C ~ 25°C 17°C water temp AC heating returned 10°C ~ 55°C 30°C water temp UNIT OPERATION Time adjustment Press the key, time “hour” value will flash, then press , the value will increase or decrease.

  • Page 47: Parameter Checking And Setting

    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. Timing off method is the same method as timing on.
  • Page 48 Parameter codes and values Name Status Range/meaning Default check/set Power down auto restart 0: no restart : 1: restart check/set 2~15℃，minus differential DHW water temp. return differential 2℃ check/set Air conditioning return differential 2~15℃，minus differential 2℃ check/set Copper pipe temp to start defrost -20~5℃...

  • Page 49: Parameter Checking Only

    UNIT OPERATION Machine operational status Checking Press both M and for 3 seconds to enter machine status mode, see table below. “C0” is part or parameter number, “28” stands for parameter. Parameter 0 means system on, 1 means system off. For more detail, please check the table below. Parameter Checking Only Press M for 3 seconds to search and check parameters.
  • Page 50 Overcurrent protect switch status 0: (off); 1 (on) check 12 Low pressure switch status 0: (off); 1 (on) check 13 Inside water flow switch 0: (off); 1 (on) check 14 Outside water flow switch 0: (off); 1 (on) check 15 The 2nd high pressure switch status 0: (off); 1 (on) check 16 Defrost temp.

  • Page 51: Display Modes

    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.

  • Page 52: Controller Communications

    AC cooling display (5) heating display If it has a timer on / off setting, there is a timer icon to indicate it Controller Communications (2wire) The communication cable can be extended to 300” using 16 AWG wire.

  • Page 53: Fuction Selection Switch

    Function Selection Switch: SW1 This switch is on the Water System PCB. Unit must be power cycled if switch settings are changed. Switch Description Default SW1-8 OFF: cooling valid SW1-7 OFF: heating valid SW1-6 OFF: DHW valid; ON: DHW invalid ON SW1-5 OFF: G1 valid;...

  • Page 54: Error Codes

    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 55 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. No flash Sensor open circuit or is 1.
  • Page 56 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 abnormally electromagnetic wait for 3 minutes then interference, Outdoor PCB reconnect the power.
  • Page 57 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 overheat, over-current compressor current too supply and reconnect it times...
  • Page 58 P2 Low pressure Flash’s 9 1. Low pressure switch 1. If the error displays before the protection times loose or faulty. compressor starts, it means 2. Throttling device low pressure switch error. (expansion valve) Please reconnect the low problem pressure switch or change it. 3.

  • Page 59: Test Run

    Water or Glycol Filling (See page 42) 1. With a hose and filling pump connected to the CX45 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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