CTC Union EcoAir 700M Installation And Maintenance Manual
Modulating air-to-water heat pump
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- Page 1 Installation and Maintenance Manual CTC EcoAir 700M Model 708M / 712M Modulating air-to-water heat pump Important! • Read carefully before use and save for future reference. • Original instructions for use. 162 605 38-1 P93769 2024-01-15...
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Page 2: Table Of Contents
Table of contents The complete system ________________________________________________________________________ Checklist ______________________________________________________________________________________________ Important to remember! .................... Transportation ............................Positioning ............................... Recycling ................................After commissioning ......................... Safety Regulations — Flammable refrigerants, safety group A3 ..........Connection alternatives ..................Technical data ........................Dimensional drawing ......................... Component placement ...................... -
Page 3: The Complete System
The complete system CTC EcoAir 700M Charge pumps CTC EcoAir 700M (models 708M and 712M) is a CTC’s PWM-controlled charge pumps are included with modulating air-to-water heat pump that transfers the products CTC EcoZenith i255/i360, CTC EcoPart i600M heat from the outside air to the property’s existing and CTC EcoVent i360F, and are available as accessories heating circuit. -
Page 4: Checklist
Function test of the heat pump’s safety valve, see section "Periodic maintenance" in chapter “Operation and maintenance". † Review warranty terms and conditions with the customer. † Register the product for warranty and insurance via the website ‘www.ctc-heating.com’. † Information on procedures for fault registration. ________________________________________________________ ___________________________________________________________ Date/Customer Date/Installer CTC EcoAir 700M... -
Page 5: Important To Remember
Report any transport damage to the carrier. • Place the heat pump on a solid foundation, preferably concrete. If the heat pump needs to be placed on soft matting, base plates must be placed under the adjustable feet. CTC EcoAir 700M... -
Page 6: Recycling
Fill in the information below. It may be useful if anything should happen. Product: Serial number: Pipe installer: Name: Date: Tel. no.: Electrical installer: Name: Date: Tel. no.: No liability is accepted for any misprints. We reserve the right to make design changes. CTC EcoAir 700M... -
Page 7: Safety Regulations - Flammable Refrigerants, Safety Group A3
• The heat pump must be installed and commissioned outdoors at a distance from the outer wall according to the chapter “Safety area”. During indoor storage, the space must be a minimum 26 m and well ventilated. CTC EcoAir 700M... - Page 8 Work process Service work must be performed according to a predetermined process in order to minimise the risk of flammable gas or vapour leaking out during the work process. CTC EcoAir 700M...
- Page 9 Checking that capacitors are discharged; this must be performed in a safe way to avoid the risk of sparking. • Ensuring that no electrical components or cabling are exposed during evacuation or filling of refrigerant. • Checking that earthing is intact. CTC EcoAir 700M...
- Page 10 Leak detection, detection of flammable refrigerants WARNING! Under no circumstances may sources that could potentially be ignited be used to detect refrigerant leaks. Leak detectors that use open flames must not be used. CTC EcoAir 700M...
- Page 11 This procedure is absolutely necessary if soldering to pipelines is to occur. Ensure that the outlet of the vacuum pump is not near any potential sources of ignition and that the ventilation is good. CTC EcoAir 700M...
- Page 12 Ensure that the refrigerant cylinder is placed on a scale before evacuation occurs. Start the evacuation equipment and use it in accordance with the instructions. The cylinders must not be overfilled (maximum 80% fluid volume). CTC EcoAir 700M...
- Page 13 Only electrical heating of the compressor may be used to accelerate this process. When oil is drained from a system, this must occur in a safe manner. CTC EcoAir 700M...
- Page 14 (e.g. cars, mobile telephones, fitness trackers etc.). 1000 mm 1000 mm • Objects with a temperature exceeding 360 °C. 400 mm 1000 mm 1000 mm 1000 mm The heat pump’s safety area (A), placement in a corner. CTC EcoAir 700M...
- Page 15 Cleaning and maintenance should not be carried out by children without supervision. • If these instructions are not followed when installing, operating and maintaining the system, CTC’s commitment under the applicable warranty terms is not binding. CTC EcoAir 700M...
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Page 16: Connection Alternatives
Connection alternatives Various connection alternatives for CTC EcoAir 700M are shown below. Control products must have program version 2023-11-01 or later. CTC EcoLogic S CTC EcoLogic L/M CTC EcoAir 700M CTC EcoZenith i255 CTC EcoZenith i555 Pro CTC EcoZenith i360 /... -
Page 17: Technical Data
0,85 0,85 Rating point at W55 Heating capacity at rating point: W55 4,78 4,78 Power input at rating point: W55 1,46 1,46 COP at rating point: W55 3,28 3,28 Flow qw at rating point: W55 0,52 0,52 CTC EcoAir 700M... - Page 18 Pressure limiter, high pressure 31±0,7 31±0,7 Low pressure sensor 0-10 0-10 Maximum operating pressure, high pressure side (PS) Maximum operating pressure, low pressure side (PS) /rev 30,6 30,6 Theoretical displacement of the compressor Compressor type Twin rotary Twin rotary CTC EcoAir 700M...
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Page 19: Dimensional Drawing
6,07 / 7,5 / 239,9 designh designh SCOP / P / Etas η, warm climate W55 (EN14825, P 4,67 / 5,7 / 183,9 4,48 / 7,5 / 176,3 designh designh Dimensional drawing EcoAir 708M / 712M 1096 1248 1068 CTC EcoAir 700M... -
Page 20: Component Placement
Compressor sensor Low pressure sensor Thermal switch Expansion valve Compressor Condenser Drying filter Suction gas sensor Four-way valve Hot gas sensor Outgoing air sensor Temperature sensor, liquid line Circuit board I/O Service connections (”Schrader”) High pressure sensor CTC EcoAir 700M... - Page 21 Gas/air separator Flow sensor Primary flow sensor, water out Safety valve (2 bar) Return flow sensor, water in Primary flow Ø28 mm Return flow Ø28 mm Defrosting sensor Condensate drain Evaporator Outdoor sensor CTC EcoAir 700M...
- Page 22 Electrical cabinet Communication Frequency converter (Driver) AC coil (x3) CTC EcoAir 700M...
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Page 23: Refrigerant System
Refrigerant system Flow chart CTC EcoAir 700M Fan (M10) Temperature sensor, compressor (B62) Evaporator Temperature sensor, liquid line (B111) Outdoor air Gas separator, heating circuit Flow sensor, heating circuit (B48) Defrosting sensor (B16) Suction gas sensor 1/2 (B22) Safety valve, heating circuit... -
Page 24: Operating Range
Operating range CTC EcoAir 700M control system monitors and ensures that the heat pump is working within its operating range. The figures below show graphs of the heat pump operating range in heating and cooling mode. Operating range, heating Water temperature ºC Min. -
Page 25: Installation
See the chapter “Safety area”. Included in the delivery • Heat pump CTC EcoAir 700M • Enclosed components: Filter ball valve: G1”. • 15 m cable LiYCY (TP 2x2x0.75 mm ) with connector for communication, fitted. -
Page 26: Preparation And Drainage
If refrigerant collects in the drainage system (e.g. due to a leak in the cooling circuit), there is a risk of explosion. ►Only connect the condensation water drainage to the drainage system via a water trap to prevent air from circulating in the condensation water pipe. CTC EcoAir 700M... -
Page 27: Pipe Installation
9 mm thick insulation. This is to allow the heat pump to deliver the highest possible temperature to the indoor unit or tank without any losses. * Observe national and/or local regulations when dimensioning the thickness of pipe insulation. CTC EcoAir 700M... -
Page 28: Example Of Connection Of The Heat Pump To Ctc Ecozenith (L) Indoor Module
13 mm thick insulation. Inside* piping is insulated with 9 mm thick insulation. Bleeder Filter ball valve CTC EcoAir 700M CTC EcoZenith i360 (L) * Observe national and/or local regulations when dimensioning the thickness of pipe insulation. CTC EcoAir 700M... -
Page 29: Pressure Drop Chart
Pressure drop chart The chart below shows the total water pressure drop for the heat pump. Pressure drop (kPa) Flow rate (l/s) Kvs value Heat pump CTC EcoAir 708M 5.35 CTC EcoAir 712M 5.35 CTC EcoAir 700M... -
Page 30: Electrical Installation
Lead-through hole (x3) *Only accessories that have been approved by CTC may be installed. Wiring diagram “HP PCB (A5)” shows how relevant accessories must be connected. CTC EcoAir 700M... -
Page 31: Communication Connection
Control product (CTC EcoLogic L/M) Terminating resistor (120 Ω), connected between A and B must Terminal block -X3 be left in place. (G) Green (A) White (B) Brown (SC) Shielding The jumper (PE-SC) must be left in place. CTC EcoAir 700M... - Page 32 1. System disconnected from power. 2. Power up the control (CTC EcoLogic L/M, CTC EcoPart i600M or EcoZenith i555 Pro) as well as CTC EcoAir 700M, which will be numbered as Heat Pump 2 (HP2). 3. Wait for about 2 minutes.
- Page 33 10. Redo the process according to the number of heat pumps to be numbered. *In this example, we have assumed that the heat pump is called HP1, as it is from the factory. If the heat pump has already been renumbered, then select this number instead. CTC EcoAir 700M...
- Page 34 Make sure the heat pump is powered up. • Try again with a new current address. 8.1.3 Connecting one heat pump When connecting CTC EcoAir 700M to the control products, connect the communication cable (LiYCY (TP)) directly to the respective product. 8.1.4 Alarm output...
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Page 35: Connection Table For Electrical Components
Heating coil for condensate tray Heating cable for condensation water drain F1:1 Automatic fuse 1-pole X2:L1 Coupling set, tube fuse etc. A5/NO4 F0:1 Tube fuse X2:1 X22B High pressure switch Charge pump X4-(D)4 X4-(E)5 L1/L2/L3 AC coils CTC EcoAir 700M... - Page 36 Page of wiring Option Connection Component Designation diagram Line choke X2/N X2:2 X26B Compressor A10/U, V, W, PE Expansion valve A5/EEV1 Four-way valve A5/NO2 CTC EcoAir 700M...
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Page 37: Wiring Diagram 400V 3N
Wiring diagram 400V 3N~ 8.3.1 Frequency converter (driver) /1 NewSymbol21 FERRIT COIL -W_1 Bygel /2.B3 /2.A2 /2.A2 Twisted Pair #4445045 589615 CTC EcoAir 700M... - Page 38 -B40 8.3.2 HP PCB /2 BMS_Card VBatt Rx+/Tx+ Rx-/Tx- Vterm Rx+/Tx+ Rx-/Tx- Rx+/Tx+ Rx-/Tx- /1.A8 #3075 /4.B7 /1.B6 /1.B3 589615 CTC EcoAir 700M...
- Page 39 8.3.3 Communication /3 Rx-/Tx- Rx+/Tx+ Twisted Pair 589615 CTC EcoAir 700M...
- Page 40 -B15 -B16 -B20 Sgnd -G11 Option 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 4 1 2 3 -B101 -X26A -B100 -B48 -X26B 589615 CTC EcoAir 700M...
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Page 41: First Start
Defrost The CTC EcoAir 700M is fitted with hot gas defrosting. The heat pump continuously checks whether defrosting is required. If this is the case, defrosting is started, the fan stops, the four-way valve switches direction and the hot gas flows instead to the evaporator. - Page 42 The speed for the charge pump is set in the “Advanced/Settings/Heat pump”* menu. Bleeding The heat pump is automatically bled via the gas separator. *For more information, see the Installation and Maintenance Manual of the control product. CTC EcoAir 700M...
- Page 43 You can purchase a heat cable as an accessory, which is installed in the condensation water drain from the condensate tray and down to the drain at a frost-free depth. Condensate tray and condensation water drain. *For more information, see the Installation and Maintenance Manual of the control product. CTC EcoAir 700M...
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Page 44: 11. Troubleshooting
11. Troubleshooting The CTC EcoAir 700M is designed to provide reliable operation and high levels of comfort, and to have a long service life. Various tips are given below to provide help and guidance in the event of an operational malfunction. - Page 45 CTC EcoAir 700M...
- Page 48 www.ctc.se, www.ctc-heating.com +46 372 88 000 Fax: +46 372 86 155 P.O Box 309 SE-341 26 Ljungby Sweden...