Page 1
AIR TO WATER HEAT PUMP Installation Manual Hydro Unit Model name: HWS-P805XWHM3-E HWS-P805XWHT6-E HWS-P805XWHT9-E HWS-P1105XWHM3-E HWS-P1105XWHT6-E HWS-P1105XWHT9-E English...
Hydro Unit Installation Manual Please read this Installation Manual carefully before installing the Air to Water Heat Pump. • This Manual describes the installation method of the hydro unit. • For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit. REFRIGERANT This Air to Water Heat Pump uses an HFC refrigerant (R410A) in order to prevent destruction of the ozone layer.
Hydro Unit Installation Manual General information System combination Outdoor Unit Hydro Unit HWS-P805HR-E HWS-P1105HR-E HWS-P805H8R-E HWS-P1105H8R-E HWS-P1405H8R-E Backup heater HWS-P805XWHM3-E ~, 3kW HWS-P805XWHT6-E 3N~, 6kW HWS-P805XWHT9-E 3N~, 9kW HWS-P1105XWHM3-E ~, 3kW HWS-P1105XWHT6-E 3N~, 6kW HWS-P1105XWHT9-E 3N~, 9kW single phase model 3 phase model ...
Hydro Unit Installation Manual Hydro Unit 8 kW model Hydro Unit HWS-P805XWHM3-E HWS-P805XWHT6-E HWS-P805XWHT9-E Back up heater capacity (kW) for back up heater 220-230 V ~ 50 Hz 380-400 V 3N~ 50 Hz 380-400 V 3N~ 50 Hz Power supply...
Hydro Unit Installation Manual Preparations for installation Parts required to connect this product (Common items) Category Part Specification Quantity Strainer (water filter) 1 1/4" 30 to 40 meshes Drain cock (for water charge) Water piping 1 1/4" Isolating ball valves for service 1 1/4"...
Hydro Unit Installation Manual Precautions for safety General safety precautions Ensure that all Local, National and International regulations are satisfied. • Read the “Precautions for safety” carefully before installation. • The precautions described below include the important items regarding safety – Observe them without fail.
Page 7
Hydro Unit Installation Manual • This unit must be connected to the main power supply using a circuit breaker or switch with a contact separation of at least 3 mm. • Be sure to turn off all main power supply switches or the circuit breaker before starting any electrical work.
Page 8
Hydro Unit Installation Manual Notes on system design • The inlet water temperature to the Hydro Unit must be 60 °C or less. Especially, be careful when there is an external heating source such as a boiler. When hot water over 60 °C returns, it may result in a failure of the unit or water leakage. •...
Hydro Unit Installation Manual Example of Hydro Unit installation Example of installation for cooling and heating When both cooling and heating modes are required a 2-way valve must be installed to isolate the radiator or under- floor heating circuit. ▼...
Page 10
Hydro Unit Installation Manual Example of 2-zone temperature control and hot water supply system The following shows an example of the 2-zone temperature control. A buffer tank and a water pump are required for the 2-zone temperature control. ▼ Fig. 5-02 Hi-Pressure Temperature By-Pass...
Hydro Unit Installation Manual Hydro Unit Positioning installation Service space Secure a service space for the Hydro Unit. WARNING • Do not install the Hydro Unit in a place where heat stagnates. • To protect yourself from injury, always use PPE (Personal Protective Equipment), that is, wear gloves.
Hydro Unit Installation Manual Refrigerant piping The Hydro Unit can be installed directly without using the fixing angles. However, the back side of the Hydro Unit can be highly heated, therefore, the installing surface must be heat- WARNING resistant. •...
Hydro Unit Installation Manual Refrigeration pipe Tightening The length and height of the refrigeration pipe must be • Connect the refrigerant pipes, from the outdoor unit, within the following values. to the Hydro Unit as shown below. As long as the Hydro Unit is installed within these ▼...
Hydro Unit Installation Manual ▼ Fig. 7-11 • The water to be used must meet the water quality standard specified in EN directive 98/83 EC. Water pipe Attention Design the water pipe length within the QH To avoid water leak, characteristics of the pump (Refer to “Fig.
Page 17
Hydro Unit Installation Manual Piping to hot water cylinder (option) Expression for expansion vessel selection Water supplied to the hot water cylinder is branched by a motorized 3-way valve (locally procured). For the specifications of the motorized 3-way valve, refer to “Control parts specifications” on page 21. V: Necessary total tank capacity ( ) Connect the hot water cylinder to port A (open when Water expansion coefficient at each hot water...
Hydro Unit Installation Manual Water charging Water quality Charge water until the pressure gauge shows The water used must satisfy EN directive 98/83 EC. recommended valve 0.2 MPa (2 bar). Hydraulic pressure may drop when the trial run begins. Piping insulation In that case, add water.
Hydro Unit Installation Manual Control line ▼ Fig. 7-19 Mixing-Valve Mixing-Valve type 1 type 2 for 2 zone for 2 zone control control Max 12 m Temp sensor in hot 230 V 100 mA water cylinder 0.75 mm² or more Pump (local) 1 2 3 4 Max 5 m shielded wire...
Page 21
Hydro Unit Installation Manual Electrical supply/cable specifications ▼ Wiring specifications Model name POWER Maximum Installation Description Power wire Connection destination HWS- SUPPLY current fuse rating 220-230 V ~ P1105HR-E 22.8 A 25 A 4 mm² or more 50 Hz 220-230 V ~ P805HR-E 22.8 A 25 A...
Page 22
Hydro Unit Installation Manual ▼ Control parts specifications Power Maximum current Type Default: 2-wire spring return valve or 3 wire SPST valve Motorized 3-way valve AC 230 V 100 mA Note: 3 wire SPDT valve can be used by changing DIP switch (for hot water) 13_1.
Page 23
Hydro Unit Installation Manual Electrical connection to hydro unit Outdoor unit to hydro unit electrical connection • Remove the front cover and the electrical box cover from the Hydro Unit. ▼ Fig. 7-22 • The Hydro Unit power cable must be sized in accordance with refer to “Electrical supply/cable specifications”.
Page 24
Hydro Unit Installation Manual Electrical connection for external booster Electrical connection for external additional heater pumps • The Hydro Unit has the facility to connect an CAUTION additional circulating pump, if required, into the heating or cooling system. • The maximum current available from the •...
Page 25
Hydro Unit Installation Manual ▼ Fig. 7-26 3-way valve (diverter) connection Type 2: SPST Required Valve Specification: port “A” to Hot water Electrical Specification: 230 V; 50 Hz; <100 mA cylinder Hydro Unit Valve Diameters: Port A, Port B: Ø 1 1/4" Return Mechanism: 3 types of 3-way valve (diverter) can be used.
Page 26
Hydro Unit Installation Manual 3-way mixing valve connection Hot water cylinder connection (optional) • Please refer to “Electrical supply/cable Required Actuator Specification specifications” for fuse/cable size and for Electrical Specification:230 V; 50 Hz; <100 mA connection details. The 3-way mixing valve is used to achieve the temperature differential needed in a 2-zone heating Electrical Connection (Hot Water Cylinder system.
Page 27
Hydro Unit Installation Manual Electrical Connection (Hot Water Cylinder Additional hydro unit outputs temperature Sensor) Alarm and Boiler Outputs • Connect the hot water cylinder temperature sensor Alarm Output: L1: Alarm output as shown below to terminals A & B on Terminal •...
Page 28
Hydro Unit Installation Manual Compressor operation output Optional inputs to hydro unit • Display relay is ON with outdoor unit compressor Room Thermostat Input: operation. 2–3: Room thermostat input for cooling mode • Volt free contact 1–3: Room thermostat input for heating mode AC230 V;...
Hydro Unit Installation Manual Emergency Shutdown input Connection to a Smart Grid network (SG Ready) S2: Emergency stop input, Tempo* control input • This function has been installed since January 2019 Hydro unit serial No. 901Y0001 This function can be switched over with FC21 and FC61.
Hydro Unit Installation Manual Second remote controller Earth continuity test On completion of the electrical installation a resistance (option) test should be completed on the earth conductor to ensure continuity between all pieces of equipment on Installation place the earth conductor. •...
Page 31
Hydro Unit Installation Manual Remote controller installation 1. Insert a flat-blade screwdriver into the groove on the back side of the remote controller to remove the rear case. NOTE 2. Use the wood screws (2 pieces) supplied with • Wiring for the remote controller should not be bundled the remote controller to attach the rear case of or installed in the same conduit with a power cable.;...
Hydro Unit Installation Manual Group Control To operate a group control of multiple hydro units • Hydro units are available to connect maximum 8 units. • The wiring of remote controller on the hydro unit. No.2 to No.8 should be cut as shown Fig. 8-01. •...
Hydro Unit Installation Manual Start up and configuration Set the DIP switches and function codes. Setting DIP switches on the board in the Hydro Unit • Detach the front cover and the electrical control box cover of the Hydro Unit. •...
Page 34
Hydro Unit Installation Manual After SW No. DIP No. Description Default Change 1 Change 2 Change 3 Commissioning Used when a hot water cylinder is connected to system. OFF = hot water cylinder connected; ON = hot water cylinder not connected Used to activate Zone 1 Operation.
Hydro Unit Installation Manual Names and functions of parts Buttons ON/OFF] button ] button On the top screen: Adjusts the temperature. On the menu screen or other screen: Selects a menu item or ON/OFF of each function or moves a cursor, etc. ] button On the top screen: Adjusts the temperature.
Hydro Unit Installation Manual Meaning of Indication on the top screen ZONE1 ZONE2 HOT WATER HEAT/COOL HOT WATER ZONE1 Lights when floor heater or radiator is connected (when the system has floor heater or radiator). ZONE2 Lights when controlling the second temperature (It may not light depending on the system). HOT WATER Lights when hot water supply system is connected (when the system has hot water supply).
Hydro Unit Installation Manual Lights when Night setback operation is set to “ON” and heating or cooling is selected. Lights while Silent mode operation is actually running. Lights while hot water boost is actually running. Lights when Anti bacteria operation is set to “ON” and hot water operation is selected. Lights while Frost protection operation is actually running.
Hydro Unit Installation Manual Menu items MENU Auto mode Schedule timer Night setback Silent mode Hot water boost Anti bacteria Frost protection Setting Initial setting ... Page 39 Clock ... Page 39 Screen contrast Backlight Header / Second ... Page 39 Temperature control ...
Page 39
Hydro Unit Installation Manual FIELD SETTING MENU items Top screen MENU ] + [ Press at the same time (4 sec) FIELD SETTING MENU ... Page 41 Test mode ... Page 42 ... Page 42 Floor drying Forced defrosting ...
Page 40
Hydro Unit Installation Manual Setting – Initial setting – Header / Second (1) Press the [ ] / [ ] button to select • For a dual remote controller system. “Setting” on the MENU screen, then press the [ •...
Hydro Unit Installation Manual Temperature control Language • To control room temperature instead of water • Select a language for the screen text. temperature with this remote controller (1) Press the [ ] / [ ] button to select (1) Press the [ ] / [ ] button to select...
Hydro Unit Installation Manual Summer time Clock display • Set summer time (Daylight saving time). • Select the clock display “12-hour clock ” or “24-hour clock” on the top screen. • When This function is “ON” and the time in “Start date”...
Hydro Unit Installation Manual Test mode (3) Start the heating or cooling or Hot water operation on the top screen, then the selected mode mark is blinking during Test mode. • Even if the outside air temperature or water temperature is outside the setting value range, Heating, Cooling and Hot water supply operation become possible.
Page 44
Hydro Unit Installation Manual (1) Press the [ ] / [ ] button to select "Floor To start the operation drying" on the FIELD SETTING MENU, then press the [ ] button for 4 seconds or longer. (1) Press the [ ] / [ ] button to select “Floor drying”...
Hydro Unit Installation Manual Forced defrosting Information input • This function is available only for the header remote • Register information about the contact number for controller. Service, model name and serial number of the hydro unit and outdoor unit. •...
Hydro Unit Installation Manual Alarm history Outdoor (Hydro) model name Outdoor (Hydro) unit serial No. • List of latest 10 alarm data: error information of error (1) Press the [ ] / [ ] button to select code, date and time is displayed. “Outdoor model name (Hydro model name, Outdoor serial No., Hydro serial No.)”...
Hydro Unit Installation Manual Service monitor code Data name Unit Control temperature (Hot water cylinder) °C • The sensor sensing temperature is displayed on the remote controller. Control temperature (Zone1) °C • This function allows you to make sure whether the Control temperature (Zone2) °C sensor is installed properly.
Page 48
Hydro Unit Installation Manual FC for Hydro Unit (FC for Remote controller) • Hydro unit function code setting is available only for the header remote controller. • Set function codes for various operation modes with the remote controller. (1) Press the [ ] / [ ] button to select “FC for Hydro unit”...
Page 49
Hydro Unit Installation Manual ▼ Fig. 9-02 Main setting items <Zone 1> (1) Setting Temperature Range (function code 18 to Default setting • Set the temperature range for heating (zone 1, Auto curve shift (FC2C) (40) zone 2), cooling, and hot water. adjust ±...
Page 50
Hydro Unit Installation Manual (10)Setting Night Setback (function code 26. (23)Hydro Unit Capacity setting remote controller function code 0E to 0F) (24)Second Remote controller target temperature • Set the function when the Night setback is set to setting “ON”. (25)Room temperature sensor setting •...
Page 51
Hydro Unit Installation Manual Function code settings Location & FC Number After Change Change FC Description Hydro Range Default Commissioning Heating Upper Limit - Zone 1 – 37~60 °C Heating Lower Limit - Zone 1 – 20~37 °C Heating Upper Limit - Zone 2 –...
Page 52
Hydro Unit Installation Manual Location & FC Number After Change Change FC Description Hydro Range Default Commissioning Function 0 = Invalid; 1 = Valid – Frost Protection Setting – 10~20 °C Temperature (°C) Frost Protection End days – 0~20 End times –...
Page 53
Hydro Unit Installation Manual Location & FC Number After Change Change FC Description Hydro Range Default Commissioning 0 = Contacts low > high system stop. System restart with remote controller 1 = Contacts high > low system stop. System restart with remote controller –...
Page 54
Hydro Unit Installation Manual Location & FC Number After Change Change FC Description Hydro Range Default Commissioning Backup heater β : energization 0 = 0K, …, 4 = 40K – control during Recommendation : β=2 (20K) defrosting Setting Start and End –...
Page 55
Hydro Unit Installation Manual Settings for hot water supply Settings for 2-zone temperature control • Prepare the optional hot water cylinder. • Procure a motorized mixing valve (refer to “Control parts specifications” on page 21 for the details.) • Procure a motorized 3-way valve (refer to “Control locally and perform piping.
Hydro Unit Installation Manual • Cover the TFI sensor's cables and sensor with insulation tube (minimum 1 mm) shown in the diagram on the right. ▼ Fig. 9-03 ▼ Fig. 9-04 Insulation tube (minimum 1 mm) TFI Sensor Tying up 2 Zone hot water supply pipe More than 4 mm Direct Buffer tank for...
Hydro Unit Installation Manual Troubleshooting Fault symptoms Symptom Possible cause Corrective action Check remote controller operation and temperature Incorrect remote controller setting setting Incorrect function code setting Check function code setting with the function code table. Room is not heated or cooled.
Page 58
Hydro Unit Installation Manual O ... Possible × ..Not possible Diagnostic functional operation Check Determination and action Backup Automatic code Operational cause operation reset Temperature increase error (hot Heating water supply) 1. Check the hot water cylinder sensor (TTW). (TTW) Hot water 2.
Page 59
Hydro Unit Installation Manual O ... Possible × ..Not possible Diagnostic functional operation Check Determination and action Backup Automatic code Operational cause operation reset Pump error 1. Pump has stopped by a certain cause. • Low supply voltage. Heating •...
Page 60
Hydro Unit Installation Manual O ... Possible × ..Not possible Diagnostic functional operation Check Determination and action Backup Automatic code Operational cause operation reset Low pressure sensor error 1. Check the connection (body or connection wiring) of the low pressure sensor. 2.
Page 61
Hydro Unit Installation Manual Diagnostic functional operation Check Determination and action Backup Automatic code Operational cause operation reset Compressor lock 1. Defect of compressor (lock) – Replace the compressor. 2. Defect of compressor wiring (open phase). Defect in the current detection ...
Page 62
Hydro Unit Installation Manual Diagnostic functional operation Check Determination and action Backup Automatic code Operational cause operation reset The 4-way valve inversion error 1. Check the operation of the 4-way valve unit or the coil characteristics. 2. Defect of the pulse motor valve. ...
Page 63
Hydro Unit Installation Manual Defect mode detected by the remote controller Diagnostic functional operation Check code Determination and action Status of air- Operational cause Condition conditioning No communication between hydro Stop – Defect in the remote controller power unit an remote controller supply displaying at 1.
η Contact details TOSHIBA CARRIER CORPORATION 336,Tadehara, Fuji-shi, Shizuoka-ken,416-8521 Japan (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj).
Page 65
η Contact details TOSHIBA CARRIER CORPORATION 336,Tadehara, Fuji-shi, Shizuoka-ken,416-8521 Japan (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj).
Page 66
η Contact details TOSHIBA CARRIER CORPORATION 336,Tadehara, Fuji-shi, Shizuoka-ken,416-8521 Japan (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj).
Page 67
η Contact details TOSHIBA CARRIER CORPORATION 336,Tadehara, Fuji-shi, Shizuoka-ken,416-8521 Japan (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj).
Need help?
Do you have a question about the HWS-P805XWHM3-E and is the answer not in the manual?
Questions and answers