Chiltrix CX50 Installation And Operation Manual
  1. Manuals
  2. Brands
  3. Chiltrix Manuals
  4. Heat Pump
  5. CX50
  6. Installation and operation manual

Chiltrix CX50 Installation And Operation Manual

Dc inverter air to water heat pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

CX50 DC INVERTER AIR TO WATER HEAT PUMP CX50-2
For Use with serial number of CX5022035001 or higher.
Installation and Operation Manual CX50-2
Options for Heating, Cooling and Domestic Hot Water
PLEASE REVIEW ENTIRE MANUAL BEFORE PROCEEDING
PLEASE SUBMIT SYSTEM DRAWING & SCHEDULE A COMMISSIONING
CALL BEFORE STARTING THE UNIT
Cx50-2 Version 1.0
Chiltrix Inc.
www.chiltrix.com
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CX50 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Chiltrix CX50

Summary of Contents for Chiltrix CX50

  • Page 1 Chiltrix Inc. www.chiltrix.com CX50 DC INVERTER AIR TO WATER HEAT PUMP CX50-2 For Use with serial number of CX5022035001 or higher. Installation and Operation Manual CX50-2 Options for Heating, Cooling and Domestic Hot Water PLEASE REVIEW ENTIRE MANUAL BEFORE PROCEEDING PLEASE SUBMIT SYSTEM DRAWING &...

  • Page 2: Table Of Contents

    Chiltrix Inc. www.chiltrix.com Table of Contents Safety Precautions………………………………………………………………………………………… Page 3 CX50 Components………………………………………………………………………………………… Page 4 Hydronic Piping and Design…………………………………………………………………………… Page 5 Buffer Tanks…………………………………………………………………………………………………… Page 8 Head/Pressure Drop Calculations…………………………………………………………………… Page 9 Using Glycol……………………………………………………………………………………………………. Page 12 Heat Pump Installation………………………………………………………………………………….. Page 13 Valves G2, G3………………………………………………………………………………………………… Page 21 Second Heat Source……………………………………………………………………………………..

  • Page 3: Safety Precautions

    Chiltrix Inc. www.chiltrix.com IMPORTANT NOTE – MAKE SURE TO PROVIDE YOUR DESIGN DRAWING FOR APPROVAL BEFORE GETTING STARTED, INCLUDING DESIRED OPERATING TEMPERATURES. 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.

  • Page 4: Cx50 Components

    Chiltrix Inc. www.chiltrix.com CX50 Components Inches 17.5 29.5 44.5 W Inc Fan Shroud...

  • Page 5: Hydronic Piping And Design

    The installer should calculate the pipe and fitting resistance to determine the head pressure. See the examples on the following pages, maximum water flow for the cx50 is 6-7.5 gpm, design flow is 5.2 gpm. If necessary, a second Chiltrix-provided PWM pump may be added to the loop and controlled by the cx50.
  • Page 6 2 and any 3 unit. Non-Preferred Optional Method, multiple heat pumps piped in parallel: (Requires additional loop pump supplied by installer) PLEASE SEND YOUR PROPOSED FINAL DESIGN TO CHILTRIX SUPPORT DEPARTMENT FOR APPROVAL, COMMENTS, AND SUGGESTIONS...
  • Page 7 If more than two, consider using a VCT37 tank and locating the fan coil units on the load side parallel to the radiant. PLEASE SEND YOUR PROPOSED FINAL DESIGN TO CHILTRIX SUPPORT DEPARTMENT FOR APPROVAL, COMMENTS, AND SUGGESTIONS Pipe Insulation All loop piping must be insulated per local and national mechanical codes.
  • Page 8 A 37 gallon buffer tank is used generally for best performance with a single cx50. 50-80 gallons is used for systems of two or three cx50s, and is always used when multiple cx50s are to be combined. A G3 seasonal valve may be used to isolate the tank in cooling mode, if applicable, note that isolating the buffer tank in this manner may cause the need for an additional volume tank to be added.
  • Page 9 Chiltrix Inc. www.chiltrix.com 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 and route it so as to avoid as many elbows as possible.
  • Page 10 The previously shown example loop has a volume of 4.5 gallons. The internal thermal expansion tank is 2 liters or .52 Gallons. The volume of the cx50 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 11 Chiltrix Inc. www.chiltrix.com GRUNDFOS UPMXL 25-124 230V PWM This is the Grundfos pump head curve for Chiltrix CX50 and is shipped with 2022 and newer CX50 units. Note, the CX50 itself has 16 Ft. Head at 10 GPM. This leaves about 24 ft of head net of the chiller.
  • Page 12 Chiltrix Inc. www.chiltrix.com Glycol While not always required, customers in colder climates that are subject to occasional freezing should add an appropriate percentage of food-grade propylene glycol to the system. NEVER USE ETHYLENE GLYCOL. Ethylene Glycol is a poison. Propylene Glycol is a non-toxic anti-freeze also used in food, cosmetics, etc. and can safely be used.

  • Page 13: Heat Pump Installation

    Chiltrix Inc. www.chiltrix.com Chiltrix Heat Pump Installation Heat Pump Installation Installation position Note: Installation must be carried out by professional personnel. The recommended mounting pad should be at least 1 ½” above ground level. If you are in an area where snow occurs, mount the unit high enough above grade to avoid blockage by drifting snow.
  • Page 14 Chiltrix Inc. www.chiltrix.com Chiltrix Heat Pump Installation NOTE: The cx50 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” Grundfos internal pump. Internal Pump Installation...
  • Page 15 Chiltrix Inc. www.chiltrix.com Internal Pump Wiring Pump Control wires Blue is negative (left) Brow is positive(right)
  • Page 16 Chiltrix Inc. www.chiltrix.com Pump Control wires Blue is negative (left) Brow is positive(right) The blue and brown pump CONTROL WIRES are connected to the (+ & -) on the Pump PWM terminal connector at the top of the main control pcb.
  • Page 17 Allowed Voltage range is 208-240vac. Maximum wire size must be suitable to your code and meet NEC requirements, breaker size is 30 AMP, for the cx50. It is advisable to add surge suppression with transient voltage protection to the circuit powering the chiller.
  • Page 18 Chiltrix Inc. www.chiltrix.com Electric Connections and Component Locator 1 2 3 4 C4 Pump and V18 SSR connections C4=> Blue is Negative(1) Brown is positive (2) V18 SSR=> Black wire to negative(3) Red wire to positive (4) controller plug in...
  • Page 19 Chiltrix Inc. www.chiltrix.com cx50 System Wiring Diagram HI-Res diagram located on Chiltrix Documents & Specifications, Chiller Heat Pump Price List & Cost, Manuals...
  • Page 20 Chiltrix Inc. www.chiltrix.com When using a second NON-PWM water pump When using a second NON-PWM water pump, use terminals L2 and C6L for relay coil power only. Do not connect a pump directly to L2 and C6L, always use a relay with a 240 vac coil.
  • Page 21 DHW target setting temperature is the tank water temperature measured with the DHW sensor, not the cx50 inlet water temperature. If the target temperature is 120°F, , and the differential is 2°c, it means, when the DHW tank reaches 120°F, the compressor will stop. When the DHW tank temperature is lower than 116°F, DHW will start.
  • Page 22 DHW and AC / Heating with two chillers in Parallel G2 and G3 valves use 220v Primary from the cx50. Use conduit and install per local code. Below shows 2x G2 valves, used this way so that Chiller 2 can continue to provide cooling or heating while Chiller 1 deals with any DHW load.
  • Page 23 7GPM. If a booster pump is needed for a different reason, this location should also be used. Check the DHW tank pressure drop from the Chiltrix Tank Manual or tank provider coil specs if not using a Chiltrix tank. The G2 valve should be located as close to the cx50 as practical.
  • Page 24 AC returned temp. When the solar tank temp – AC returned temp is ≥ 5 ℃, the 3-way valve G3S will When parameter P50 is 1, the valve is configured as a solar pre-heat valve. The cx50 compares the solar tank be on;...
  • Page 25 Chiltrix Inc. www.chiltrix.com G3 VALVE Seasonal Switch Valve G3 Ports...

  • Page 26: Second Heat Source

    This would typically be a small inline tank located on the supply side of the loop, between the cx50 outlet and the first of any load inlets. The thermostat/element must be set to max 120F and any such tank used for this purpose must have code-compliant pressure relief valve installed and properly vented via copper pipe to a drain.
  • Page 27 The internal T-Stat allows a heat pump thermostat or other external controller to control switching the heating, cooling and standby modes of the cx50 via relay. This method of control generally requires a single- stage standard heat pump thermostat, a installer provided 24 vac transformer and two relays, (Eg. Tyco K10P- 11A15-24, w/ two relay sockets, 27E487).
  • Page 28 NOTE: RELAY CONTROL SHOULD NEVER BE USED FOR A HEATING OR COOLING “CALL”. IT IS ONLY FOR MODE SELECTION. Heating or cooling calls are not needed or allowed with cx50, as it monitors the returning water temperature and always knows what it needs to do.
  • Page 29 System filling with Propylene Glycol and water At or near the cx50 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 glycol in a container large enough to hold the loop volume plus a few gallons.
  • Page 30 If a DHW tank is installed, it should be the first device on the loop as shown. The G2 valves should always be as close to the cx50 as possible. The tank should be as close to the G2 valve as possible.
  • Page 31 86F (implies leaving at 95F). Heating, for fan coils, is normally set at 96F (implies steady-state temp of 104F). The cx50 can achieve a leaving temp of 131F under most but not all conditions. The maximum supported target set point is 111F (implies a 120F leaving temp.
  • Page 32 Chiltrix Inc. www.chiltrix.com cx50 Desktop Keys Operation Status Click "Status" at the home page to enter the “C” parameter checking page as shown below. Click the arrow ">" button to go to next page.

  • Page 33: Settings Menu

    Chiltrix Inc. www.chiltrix.com Click “Setting” button, and you will enter the system setting page. Then you select the language, set time and Administrator settings. Settings Menu...
  • Page 34 Chiltrix Inc. www.chiltrix.com Language Screen Screen Saver...
  • Page 35 Chiltrix Inc. www.chiltrix.com Touch Screen Fixing (Calibration) Time Setting...
  • Page 36 Chiltrix Inc. www.chiltrix.com Back Light Setting Timer Function Click “Timer” button, you can set the heat pump to turn on and off times, you can select different working modes for different time periods. There are total 4 periods, (8 points), in the timer setting.
  • Page 37 Chiltrix Inc. www.chiltrix.com Timers 1 and 2 set to Heating Mode with no times set Timers 3 and 4 set to Heating mode with no times set...
  • Page 38 Chiltrix Inc. www.chiltrix.com Setting the mode for timer 1, same menu for timers 1-4 Timer 1 turned off, timers 1-4 use the same menu...
  • Page 39 Chiltrix Inc. www.chiltrix.com Timer 1 Start time and Days of the week selected (TU and WE), timers 1-4 use the same menu Administrator Functions Click “Administrator” button, you need to enter the password “2222” to enter the “P” parameters setting page as shown below.
  • Page 40 Chiltrix Inc. www.chiltrix.com Mode Click “Mode” at homepage, you will enter mode selection page. To select the desired mode, press the corresponding button. There are 5 standard modes available with DHW enabled, plus an AU Setting. Auto Heating Target Curve Function...
  • Page 41 Chiltrix Inc. www.chiltrix.com Error Log Error Log above shown with no errors Error Log above shown with sample errors...
  • Page 42 Chiltrix Inc. www.chiltrix.com Software Versions The following pages contain the (LCD) C-Parameters, P-Parameters, and Error Codes. To access the C-Parameters (read only), touch the “STATUS” button from the desktop. To access the P-Parameters touch the “SETTINGS” button from the desk top.
  • Page 43 Chiltrix Inc. www.chiltrix.com P- Parameters Power-down recovery function 0：off；1：on Single / three phase selection 0：Single-phase power supply Three-phase power supply Power frequency 5：50HZ； 6：60HZ Heat source selection 0：Geo； 1：Air source Heating temperature control method 0：Method 1 : 1：Method 2 Defrost method selection 0：Method 1 : 1：Method 2...
  • Page 44 Chiltrix Inc. www.chiltrix.com P-Parameters Electric heater start delay minute 5-15min SSR Ramp Up rate 1-20min Automatic heating temperature 0-17℃ Automatic cooling temperature 0-28℃ Allowed defrost coil temperature -20~5℃ -6℃ hot water frequency limitation 2~10= max frequency 20~100% AC heating AU mode highest temp 30~50℃...
  • Page 45 Chiltrix Inc. www.chiltrix.com P-Parameters AC water flow switch type selection 0：Normal Water flow switch； 1：Water flow volume meter sensor 2:DN50 water flow sensor 3: New flow sensor SEN-HZG1WA AC minimum water flow 3-80L/m Water source Water flow switch type selection 0：Normal Water flow switch；...
  • Page 46 Chiltrix Inc. www.chiltrix.com P-Parameters night mode ending point 0-23（for relative time） Model selection 0~255 Whether to use high and low pressure transmitter 0 Disabled; 1 Used temperature difference to control C4 water pump speed EEV min open degree Forced sterilization 0,normal;1,forced;(Automatic recovery of 0...
  • Page 47 Chiltrix Inc. www.chiltrix.com C Parameters out pipe temp -30~97℃ compressor discharge temp -30~128℃ ambient temp -30~97℃ Suction temperature -30~97℃ Plate heat exchanger inlet temperature -30~97℃ AC outlet water temp -30~97℃ Solar temperature -30~97℃ Compressor current value(Tested by main PCB) 0.00~30.00A(show P4 if C09>16A)
  • Page 48 Chiltrix Inc. www.chiltrix.com C Parameters Heating Method 2 target temperature -30~97℃ Running returning lubrication oil function. 1：On； 0： Off fan type 0：AC fan；1：EC fan EC fan motor 1 speed 0~3000 EC fan motor 2 speed 0~3000 water pump types 0：AC WATER PUMP；1：EC WATER PUMP...
  • Page 49 Chiltrix Inc. www.chiltrix.com Error Codes Compressor discharge high temp protection Outdoor air temp sensor error Outer coil pipe temp sensor error Pipe returned gas sensor error indoor refrigerant pipe temp sensor error Coil high temp protection solar water temp sensor error...
  • Page 50 Chiltrix Inc. www.chiltrix.com Error Codes voltage protection IPM Fault Compressor Drive Fault Compressor over current protection 1(DC current on U,V,W wire of compressor pins,checked by IPM) IPM Overheat PFC Fault DC bus overvoltage DC bus undervoltage AC input over or under voltage...

  • Page 51: Dynamic Outdoor Reset Control

    But that's not the case with a heat pump. Here's why: For a real-world example, at 0F outdoor temperature, an air to water heat pump such as the cx50 will have >20% higher capacity when used with an operating temperature of 95F compared to operating at 122F. And COP at 95F will be >30% higher at 95F than at 122F.
  • Page 52 P48 and P49. The tool is located at https://www.chiltrix.com/dynamic-heat-reset Set parameter P48 and P49 in cx50 controller according to the values used in your curve worksheet. There is an "AU TEMP" icon inside of the mode section of the main screen of the controller. If you press on it then you will enter the AU TEMP mode screen.

  • Page 53: Auto Switch-Over

    This function allows the cx50 to automatically select its mode, either heating, cooling, or standby (off), according to outdoor temperature. This can be particularly useful for example, if a single cx50 is shared by two different tenants, allowing the property manager to (automatically) select the mode according to the actual outdoor weather conditions.

  • Page 54: Commissioning

    Running a Test- Call tech support if this is your first time commissioning a cx50. Apply power to the cx50 and select heating mode using the wired controller. If there is not enough flow in the system or air in the lines and you will get P5 and possibly P1 errors. Call tech support if any error codes are displayed on the wired controller.
  • Page 55 Chiltrix Inc. www.chiltrix.com...
  • Page 56 Chiltrix Inc. www.chiltrix.com...
  • Page 57 Chiltrix Inc. www.chiltrix.com Chiltrix cx50 Internal Pump: Wilo Yonos PARA RS 25/7.5 PWM1 Ku...

This manual is also suitable for:

Cx50-2

Table of Contents