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Rotex RGSQH10S18AA9W Installer's Reference Manual

Rotex hpu ground
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Summary of Contents for Rotex RGSQH10S18AA9W

  • Page 1 Installer reference guide ROTEX HPU ground Installer reference guide English ROTEX HPU ground RGSQH10S18AA9W...

  • Page 2: Table Of Contents

    System settings............51 6.4.1 About preparing electrical wiring......... 21 Menu structure: Overview user settings ........53 6.4.2 About preferential kWh rate power supply ....22 Menu structure: Overview installer settings....... 54 Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 3: General Safety Precautions

    Make sure installation, testing and applied materials 14.5.1 Wiring diagram: Indoor unit......... 70 comply with applicable legislation (on top of the 14.6 Technical specifications............. 77 instructions described in the ROTEX documentation). 14.6.1 Technical specifications: Indoor unit ......77 14.7 Operation range................. 78 CAUTION 14.7.1...

  • Page 4: Installation Site

    A siphon tube is NOT present Charge with the cylinder upside down. 1.2.3 Refrigerant NOTICE Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 5: Brine

    If NOT factory installed, a main switch or other means for Indoor unit Installation instructions disconnection, having a contact separation in all poles installation providing full disconnection under overvoltage category III manual condition, shall be installed in the fixed wiring. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 6: Installer Reference Guide At A Glance

    Digital files on the ROTEX equipment homepage. Latest revisions of the supplied documentation may be available on the regional ROTEX website or via your dealer. Installer reference guide at a glance Chapter Description General safety Safety instructions that you must read...

  • Page 7: About The Units And Options

    ▪ To have both: The software and corresponding operating instructions are available on the ROTEX homepage. ▪ control close to the indoor unit, For installation instructions, see the installation manual of the PC ▪ room thermostat functionality in the principal space to be cable and "8 Configuration"...

  • Page 8: Application Guidelines

    ▪ Code: [7-02] ▪ How many rooms are heated by the ROTEX heat pump system? Benefits ▪ Which heat emitter types are used in each room and what is their ▪...
  • Page 9 ON/OFF ▪ Code: [C-05] condition. Benefits ▪ Wireless. The ROTEX external room thermostat is available in a Benefits wireless version. ▪ Efficiency. Optimal energy efficiency because of the interlink ▪ Efficiency. Although the external room thermostat only sends ON/ function.

  • Page 10: Multiple Rooms - One Lwt Zone

    Number of water temperature 0 (1 LWT zone): Main zones: ▪ #: [A.2.1.8] ▪ Code: [7-02] Benefits ▪ Cost effective. ▪ Easy. Same installation as for one room, but with thermostatic valves. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 11 ▪ Code: [C-07] schedules, for each room via the remote controller of the Number of water temperature 0 (1 LWT zone): Main heat pump convectors. zones: ▪ #: [A.2.1.8] ▪ Code: [7-02] RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 12: Multiple Rooms - Two Lwt Zones

    (e.g., living temperature zone in relation to the required capacity of room=under floor heating and the bedroom=convector (no both water temperature zones. continuous heating)). Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 13: Setting Up An Auxiliary Heat Source For Space Heating

    ▪ ROTEX is NOT responsible for incorrect or unsafe ▪ Under floor heating has the best performance with ROTEX situations in the auxiliary boiler system. HPSU. ▪ Make sure the return water to the heat pump does NOT exceed 55°C.

  • Page 14: Setting Up The Domestic Hot Water Tank

    ▪ The heat pump itself can produce domestic hot water of maximum 55°C. The electrical resistance integrated in the heat pump can higher this temperature. However, this consumes more energy. ROTEX recommends to set the desired DHW tank temperature FHL1 below 55°C to avoid using the electrical resistance.

  • Page 15: Setup And Configuration - Dhw Tank

    ▪ You can program a schedule to control the DHW pump via the ▪ The leaving and entering water temperature user interface. For more information, see the user reference guide. ▪ The flow rate ▪ Setup and configuration: No additional equipment needed. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 16: Consumed Energy

    ▪ Select full time limitation mode ▪ Select the type of limitation (power in kW or current in A) ▪ Set the desired power limitation level Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 17: Power Limitation Activated By Digital Inputs

    ▪ If this is NOT possible, ROTEX recommends to connect a remote ▪ DI1 = weakest limitation (highest energy consumption) indoor sensor (option KRCS01-1). ▪ DI4 = strongest limitation (lowest energy consumption) ▪...

  • Page 18: Preparation

    ▪ Fluid pressure – Space heating and brine circuit. The maximum fluid pressure of the space heating and brine circuit is 4 bar. Provide adequate safeguards in the water circuit to ensure that the maximum pressure is NOT exceeded. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 19 ▪ Domestic hot water tank – Disinfection. For the disinfection function of the domestic hot water tank, see "8.3.2 Domestic hot water control: advanced" on page RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 20: Formula To Calculate The Expansion Vessel Pre- Pressure

    When circulation in each space heating loop is controlled 30% ethanol (brine expansion vessel) by remotely controlled valves, it is important that the minimum water volume is guaranteed, even if all of the valves are closed. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 21: Changing The Pre-Pressure Of The Expansion Vessel

    Changing the pre-pressure of the expansion vessel should be done advancing capacitor will reduce performance and may by releasing or increasing nitrogen pressure through the schräder cause accidents. valve of the expansion vessel. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 22: About Preferential Kwh Rate Power Supply

    ▪ error "U4" appears on the user interface, ▪ the heat pump module is connected to preferential kWh rate power supply where power supply is interrupted and preferential kWh rate power supply is activated. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 23: Overview Of Electrical Connections For External And Internal Actuators

    500 m. Applicable for both single user interface and dual use interface connection. NOTICE More technical specifications of the different connections are indicated on the inside of the indoor unit. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 24: To Open The Switch Box Cover Of The Indoor Unit

    You have to mount the indoor unit before you can connect the brine and water piping. Typical workflow Mounting the indoor unit typically consists of the following stages: Installing the indoor unit. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 25 The maximum allowed deviation is 1°. ≤1° NOTICE To avoid structural damage on unit, ONLY move the unit when levelling feet are at their lowest position. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 26: Connecting The Brine Piping

    5 Return the 3-way valve to its original position. Brine in NOTICE To facilitate service and maintenance, it is recommended to install shut-off valves as close as possible to the inlet and outlet of the unit. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 27: To Connect The Pressure Relief Valve To The Drain On The Brine Side

    Consider that the brine circuit piping inside the house can/will condensate. Foresee adequate insulation for these pipes. Space heating water out Space heating water in Domestic hot water out Domestic cold water in (cold water supply) RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 28: To Connect The Pressure Relief Valve To The Drain

    4 Check for water leaks. 5 Manually operate the field installed pressure relief valve to ensure that free water flow through the discharge pipe. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 29: To Insulate The Water Piping

    "14.5 Wiring diagram" on page 3 Routing of the wiring inside the unit should be as follows: WARNING ALWAYS use multicore cable for power supply cables. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 30 ▪ Outdoor ambient temperature sensor ▪ Indoor ambient temperature sensor (option) ▪ Electrical meters (field supply) ▪ Normal kWh rate power supply (power supply for unit) High voltage power supply Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 31: To Connect The Main Power Supply

    (delivered as accessory). X6YA Main power supply Normal kWh rate power supply Preferential power supply contact 2 Fix the cable with cable ties to the cable tie mountings. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 32: To Connect The User Interface

    Be careful NOT to distort the shape of the backside of the user interface by overtightening the mounting screws. 3 Cut off a 2 wire conductor. 4 Connect the wires to the user interface as shown below. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 33: To Connect The Shut-Off Valve

    Wiring is different for a NC (normal closed) valve and a NO (normal open) valve. 2 Fix the cable with cable ties to the cable tie mountings. 2 Fix the cable with cable ties to the cable tie mountings. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 34: To Connect The Alarm Output

    Installation of EKRP1HB is required. 2 Fix the cable with cable ties to the cable tie mountings. Installation of EKRP1AHTA is required. 2 Fix the cable with cable ties to the cable tie mountings. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 35: Finishing The Indoor Unit Installation

    ON the user interface for the first time (via the indoor unit), a quick wizard starts to help you configure the system. Afterwards. If necessary, you can make changes to the configuration afterwards. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 36: To Access The Most Used Commands

    ▪ Receive data: the user interface you are operating does NOT contain the correct data and the data on the other user interface will be used to overwrite. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 37: Quick Wizard: Set The System Layout After First Power On

    ▪ 2 (RT control): Unit operation is decided based ambient temperature of the user interface. 3 Set the system layout settings: Standard, Options, Capacities. For more details, see "8.2 Basic configuration" on page RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 38 ▪ a: Space heating control (user interface) ▪ b: OFF ▪ c: On ▪ d: Pump operation continued >> ▪ a: Main LWT zone continued >> Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 39: Quick Wizard: Options

    Quick wizard: Options Domestic hot water settings Following settings must be made accordingly. Code Description [E-05] DHW operation: ▪ 0 (No): N/A ▪ 1 (Yes): Installed. Do NOT change this setting. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 40 (X2M/1). Select this value in case of a [C-09] Alarm No alarm No power connection heat pump supply to unit convector (RFWXV). 0 (default) Closed output Open output Open output Open output Closed output Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 41: Quick Wizard: Capacities (Energy Metering)

    Remark: This value can only be backup heater. Default: 3 kW. set in leaving water temperature control. 0~10 kW (in steps of 0.2 kW) RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 42 ▪ fixed in time (i.e., NOT scheduled) ▪ Weather dep. (default): The desired leaving water temperature is: ▪ weather-dependent (i.e. depends outdoor ambient temperature) ▪ fixed in time (i.e., NOT scheduled) continued >> Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 43 ▪ Yes: enabled. Note: The desired leaving water temperature can only be read out on the user interface Δt Temperature difference Target leaving water temperature (main) RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 44: Domestic Hot Water Control

    1°C. For During disinfection of the domestic hot water tank, the customers with less feeling about tank temperatures, choose display DHW temperature can exceed this maximum temperature. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 45: Contact/Helpdesk Number

    [8-0A] Eco (heating) [9-01]~[9-00] (default: 45°C) Preset leaving water temperature (shift value) for the main leaving water temperature zone in case of weather dependent [7.4.2.5] Comfort (heating) −10~+10°C (default: 0°C) RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 46 0.1°C. Room temperature hysteresis Only applicable in case of room thermostat control. The hysteresis band around the desired room temperature is settable. ROTEX 0°C 0°C advises NOT to change the room temperature hysteresis as it is set for an optimal use of the system.

  • Page 47: Domestic Hot Water Control: Advanced

    Preset values make it easy to use the same value in the schedule. If interface. you later want to change the value, you only have to do it in 1 place (see also operation manual and/or user reference guide). RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 48 Range: 0~10 hours (default: 0.5) (step: Range: 0~10°C (default: 2) 1/2 hour) [8-04] Additional running time for the maximum running time depending on the outdoor ambient limit temperature [4-02]. Range: 0~95 minutes (default: 95) Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 49 ▪ Set the user permission level to Installer. [A.4.4.5] [2-04] Duration: 40~60 minutes, default: 60 minutes. ▪ Go to the DHW tank temperature home page (Tank). ▪ Press to interrupt the disinfection. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 50: Heat Source Settings

    1°C) guideline 5 when bivalent operation function is enabled. INFORMATION ROTEX shall NOT be held liable for any damage resulting If the storage temperature set point is higher than 55°C, from failure to observe this rule. ROTEX recommends NOT to disable the backup heater...

  • Page 51: System Settings

    The setting brine freezing temperature can be modified power failure. Therefore, ROTEX recommends to always enable the and the read out is correct in [A.6.9] Brine freezeup temp function.
  • Page 52 <4°C (pump will be activated for 10 minutes and deactivated after 10 [5-09] Value: Only applicable in case of full minutes). ROTEX shall NOT be held liable for any damage resulting time power limitation mode. this functionality. 0~20 kW, step 0.5 kW (default: 20 kW)

  • Page 53: Menu Structure: Overview User Settings

    8 Configuration Menu structure: Overview user settings Time Holiday mode Holiday mode LWT main Energy metering Produced energy Contact/helpdesk number Indoor unit Temperature lock Backlit LCD time LWT main LWT main RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 54: Menu Structure: Overview Installer Settings

    Solar kit settings are shown but are NOT applicable for this unit. Settings shall NOT be used or changed. INFORMATION Power saving settings are shown but are NOT applicable for this unit. Settings shall NOT be used or changed. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 55 8 Configuration Auto emergency operation Auto restart Forced pump OFF Type UFH screed dryout Start dryout Start air purge RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 56: Commissioning

    NEVER operate the unit without thermistors and/or Result: SHC pressure sensors/switches, burning of the compressor may Result: Tank result. 9 Set the desired position of the bypass valve. Use the buttons to scroll to Bypass. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 57: To Perform An Automatic Air Purge

    To monitor the temperature, go to [A.6] and select the information needs to enter: you want to check. 1 the duration by a number of hours up to 72 hours, 2 the desired leaving water temperature. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 58: To Program An Underfloor Heating Screed Dryout Schedule

    ▪ Show the user what he/she has to do in relation to maintaining the manually, press , select OK and press unit. ▪ Explain the user about energy saving tips as described in the operation manual. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 59: To Fix The Applicable Language On The Unit Name Plate

    To make sure this water originates from the tank, check after a tank ▪ Switch box heat up cycle. ▪ Descaling It is recommended to do this maintenance more frequently. ▪ Chemical disinfection ▪ Anode ▪ Brine leakage RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 60: To Drain The Domestic Hot Water Tank

    ▪ Solving problems based on error codes 12.2 General guidelines Before starting the troubleshooting procedure, carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 61: Solving Problems Based On Symptoms

    21). checks, contact your dealer. In some cases, it is normal that the unit decides to use a low water flow. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 62: Symptom: The Pressure Relief Valve Opens

    ▪ Whether there is air in the system ▪ The air purge operation Press the reset button in the switch box. See "14.3 Components" on page 68 for the location of the reset button. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 63: Solving Problems Based On Error Codes

    Please contact your dealer. Abnormal increase outlet OU: Malfunction of heat water temperature. exchanger thermistor. Please contact your dealer. Abnormal increase outlet Brine inlet thermistor water temperature (DHW). abnormality Please contact your dealer. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 64: Disposal

    ▪ Indoor unit relates to indoor unit PCB which controls the hydraulic part of the ground source heat pump. ▪ Outdoor unit relates to outdoor unit PCB which controls the compressor module of the ground source heat pump. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 65: Technical Data

    Water OUT connection 22 mm straight Tank IN connection 22 mm straight Tank OUT connection 22 mm straight Brine IN connection 28 mm straight Brine OUT connection 28 mm straight Control wiring intake (Ø24 mm) RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 66 Note 2: A flexible hose is pre-assembled to the drain outlet. The exit of the flexible hose is at the backside of the unit. The flexible hose can be removed. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 67 14 Technical data RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 68: Components

    Demand PCB A8P (optional) Brine pump contactor K6M. Note: Only 4 of the 5 connection points are used. Reactors PCB fuse A1P (FU1) PCB fuse A9P (F1U, F2U) PCB fuse A10P (F1U) Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 69: Piping Diagram

    R5T o ut brine entering water CHECK VALVE SCREW CONN. R6T o ut brine leaving water FLARE CONN. QUICK COUPLING FLANGE CONN. SPINNED PIPE BRAZED CONN. PINCHED PIPE 3D081374-1A page 1 RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 70: Wiring Diagram

    On/OFF thermostat (wireless) External thermistor on On/OFF thermostat (wireless) Heat pump convector Additional leaving water temperature: On/OFF thermostat (wired) On/OFF thermostat (wireless) External thermistor on On/OFF thermostat (wireless) Heat pump convector Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 71 3 4 5 X801M 1 2 3 4 Demand PCB Power limitation digital inputs: 12 V DC / 12 mA detection (voltage supplied by PCB) Only for demand PCB option 4D081377-1A_page 4 RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 72 2 A (inrush) - 230 V AC 3 wire type NO valve 1 A (continuous) (SPDT) DHW pump Heatpump convector Heatpump convector Main LWT zone Add LWT zone NC valve Shut-off valve 4D081377-1A_page 5 Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 73 Fuse T, 6.3 A 250 V R2T (A1P) After backup heater temperature sensor FU1 (A1P) Fuse T, 6.3 A 250 V R2T (A3P) External sensor (floor or ambient) H1P~H7P R2T (A9P) Discharge sensor RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 74 Field wiring terminal for DC Earth wiring Field supply Wire number 15 /12.2 Connection ** continues on page 12 column 2 Several wiring possibilities Option Not mounted in switch box Wiring depending on model Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 75 PCB) only for wired only for wireless thermostat only for heat PCB) Normally closed thermostat pump convector Shut-off valve Electrical meters Only for brine pressure switch connection kit 4P355433-1A_page 4 RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 76 ▪ Required number of electrical meters: Electrical meter type Regular kWh rate power supply — 3~ balanced 3~ unbalanced — Electrical meter type Benefit kWh rate power supply 3~ balanced 3~ unbalanced — Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 77: Technical Specifications

    14.6.1 Technical specifications: Indoor unit Circuit Operating Operating pressure temperature Space heating 15~65°C 1~4 bar Domestic hot water 15~65°C 1~10 bar Brine –15~20°C 1~4 bar Room temperature 5~30°C Not applicable RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 78: Operation Range

    (Tf) in the controller. The unit will NOT operate at an entering brine temperature lower than Tf+10K. Tf=changeable between 0°C and –15°C. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...
  • Page 79 (Tf) in the controller. The unit will NOT operate at an entering brine temperature lower than Tf+10K. Tf = changeable between 0°C and –15°C. RGSQH10S18AA9W Installer reference guide ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 80: Esp Curve

    Mixture water/propylene glycol (40 V%) at entering brine temperature –5°C Mixture water/ethanol (29 M%) at entering brine temperature –5°C Note: Selecting a flow outside the area of operation can cause damage or malfunction of the unit. Installer reference guide RGSQH10S18AA9W ROTEX HPU ground 4P374245-1 – 2014.03...

  • Page 81: Glossary

    Optional equipment Equipment made or approved by ROTEX that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment not made by ROTEX that can be combined with product according instructions accompanying documentation.
  • Page 82 Sede operativa Via Milano, 6 - 20097 San Donato Milanese MI-Italy Tel. +39 02 51619.1 · Fax +39 02 51619222 e-mail info@rotexitalia.it · www.rotexitalia.it Numero verde ROTEX 800-886699 ROTEX Représenté ROTEX Heating Systems SARL en France par: 1, rue des Artisans ·...

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