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19

IVT 495 TWIN  9518799

Setting the hot water

Extra hot water

Occassionally you might want to utilise the
possibility to obtain extra hot water, e.g. when you
have guests. This setting is also suitable when you
require a larger amount of duration hot water, e.g.
for a bubble bath.

NOTE:

 Extra hot water increases the power

consumption.

1. Press the right button once and the text 

Set the

house heating here

 appears on the display.

2. Turn the dial clockwise until the text 

Adjust

the hot water settings here

 appears.

3. Press the right button once and 

Number of

hours for extra hot water

 appears on the

display.

4. Press the right button once and the text

Remains: 

 

0/ 0hrs

 appears on the display.

NOTE: 

The first number shows how many

hours remain before the extra hot water
function is turned off. The second number
shows the total number of hours chosen.

5. Press the right button

 (Adjust)

, the display

now shows the previously set value. Turn the
dial clockwise to increase the number of hours
for extra hot water and anti-clockwise to
reduce it.

6. Press the right button when the required

number of hours has been set 

(Save)

. The

value is now saved. Press the left button to
return to the main menu.

Set the house

heating here       1

Adjust the hot water

settings here      2

Number of hours for

extra hot water  2.1

Remains:     0/ 0hrs

Return        Adjust

Cancel   0      Save

USER

Summary of Contents for 495 TWIN

Page 1: ...IVT 495 TWIN Guide to installation commissioning and maintenance Article no 9518799 Version 2 0 ...

Page 2: ......

Page 3: ...ature 22 Duration hot water temperature 22 Indoor temperature 22 Other temperatures 22 Setting the additional heat Disconnecting the compressor unit 23 Quickstart additional heat 24 Maintenance Cleaning the air filter 25 Cleaning the ceiling or wall mounted valves25 Checking the pressure gauge in the connecting area 25 Protective anode 25 Expansion vessel 26 Particle filter 26 Operational disturba...

Page 4: ...o achieve a comfortable indoor climate A room sensor can also be used as a complement to the outdoor sensor accessory This must be activated by a service engineer The whole unit occupies less than half a square metre making it a lot less space demanding than traditional energy systems A green control lamp on the front of the unit shows that the power is on and everything is working normally When t...

Page 5: ...r climate 1 Open all radiator thermostats Turn the floor heating system s room thermostat to maximum 2 Set the appropriate heat curve 3 Wait 24 hours Fine tune the curve if the temperature is not satisfactory wait another 24 hours Fine tune again if necessary 4 If your radiators have thermostats these can be set at a lower temperature in the rooms facing south since these get additional heat from ...

Page 6: ...eat the house The electric element connects automatically if additional heat is required When the heating system is started it automatically heats the house and hot water to required temperatures according to its settings 4 Exhaust air provides the ground coil with new heat when the house does not need heating System description Radiator The energy in the ventilation air is extracted before it lea...

Page 7: ...is lit when hot water is being heated The lamp blinks during hot water peak and extra hot water when the compressor has stopped and only the electric element is heating the water 4 This lamp flashes or is lit when a fault has occurred 5 This switch is used to turn the heat pump on and off This lamp is lit when the heat pump is on and flashes when it is off 6 This dial is used to navigate the menus...

Page 8: ... Overheat protection electric element reset on the underside of the electric box 9 Shunt valve 10 Circulation pump for the heating system 11 Safety valve for tap water 12 Waste water vessel 13 Pressure gauge for the heating system Should normally be set at 0 5 1 5 bar 14 Filling tap for the heating system 15 Condensed water hose 16 Cold water 17 Hot water 18 Waste water hose 19 Safety valve for th...

Page 9: ... hot water if you have a temporary need for more duration hot water NOTE The savings factor will be somewhat reduced during extra hot water 1 Press the left button once and the text Sel d ht curve and the set curve appears on the screen 2 Turn the dial until Extra DHW and the amount of time left before the extra hot water function goes off appears on the screen together with the set value 3 Press ...

Page 10: ...armer the water supplied to the heating system radiators or floor heating Max flow temperature can be changed by the installer The highest outgoing heat transfer fluid temperature is approx 58ºC Flow ºC Heat curve The flow temperature is limited to 48ºC Example Curve 4 and an outdoor temperature of 5ºC gives a flow temperature of 36ºC See dashed line Outdoor temperature USER ...

Page 11: ...ore less range 0 10 appears on the display 3 Press the right button once and the text Set value appears on the display 4 Press the right button Adjust The previously set value is shown on the display Turn the dial clockwise to increase the heat and anti clockwise to reduce it 5 Press the right button when the required value has been set Save The value is now saved Press the left button to return t...

Page 12: ...xt Heat fine tune range 8 8 appears on the display 4 Press the right button once and the text Set value appears on the display 5 Press the right button Adjust The previously set value is shown on the display Turn the dial clockwise to increase the heat and anti clockwise to reduce it 6 Press the right button when the required value has been set Save The value is now saved Press the left button to ...

Page 13: ... heat curve appears on the display 4 Then press the right button The display shows Out 20º Curve 20 0º Turn the dial until the outdoor temperature for which you want to adapt the heat curve is at the top 5 Press the right button and the previously set value appears on the display Turn the dial until the required value has been set 6 Press the right button when the required value has been set Save ...

Page 14: ...1 Press the right button once and the text Set the house heating here appears on the display 2 Press the right button once again and the text Heat more less range 0 10 appears on the display 3 Turn the dial until Setting room temperature appears on the display 4 Press the right button the display now shows Set value 5 Press the right button Adjust Turn the dial until the required value has been se...

Page 15: ...2 Press the right button once again and the text Heat more less range 0 10 appears on the display 3 Turn the dial until Setting room temp influence appears on the display 4 Press the right button once and the text Set value appears on the display 5 Press the right button Adjust the display now shows the previously set value Turn the dial until the required value has been set 6 Press the right butt...

Page 16: ...ess the right button once again and the text Heat more less range 0 10 appears on the display 3 Turn the dial clockwise until Setting holiday function appears on the display 4 Press the right button once and the text Set value appears on the display 5 Press the right button Adjust the display now shows the previously set value Turn the dial clockwise until the desired number of days for the holida...

Page 17: ...use heating here 1 Heat more less range 0 10 1 1 Setting summer mode 1 14 Set value 17 0 Return Adjust IIIIIIII I I I I I I Cancel 17 0 Save Summer mode House heating off IIIIIIII I I I I I I Cancel IIII Save NOTE To prevent repeated switching between heating mode and summer mode between day and night the tran sition from winter mode to summer mode is delayed by one hour and from summer mode to wi...

Page 18: ...less range 0 10 appears on the display 3 Turn the dial until Setting mode economy normal appears on the display 4 Press the right button once and Status Nor mal mode appears on the display 5 Press the right button Adjust the display now shows Economy mode 6 To activate economy mode press the right button Yes 7 Press the left button No to return to the main menu Set the house heating here 1 Heat mo...

Page 19: ...tra hot water appears on the display 4 Press the right button once and the text Remains 0 0hrs appears on the display NOTE The first number shows how many hours remain before the extra hot water function is turned off The second number shows the total number of hours chosen 5 Press the right button Adjust the display now shows the previously set value Turn the dial clockwise to increase the number...

Page 20: ...se until Interval for hot water peak appears 5 Press the right button once and the text Remains 7 7day appears on the display NOTE The first number indicates how many days remain until the next hot water peak This will count down to zero The second number indicates the interval at which you want the peak to return 6 Press the right button Adjust the display now shows the previously set value To ch...

Page 21: ...at pump Proceed as follows 1 Press the right button once and the text Set the house heating here appears on the display 2 Turn the dial clockwise until the text Monitor all temperatures appears 3 Press the right button once and turn the dial until the temperature you want to check appears 4 Press the left button a few times to return to the main menu The contents of the respective displays are sho...

Page 22: ...e that the heat pump supplies to the hot water tap system Indoor temperature Requires a room sensor which is an accessory Room GT5 shows the indoor temperature Other temperatures A further four temperatures are shown Dur hot water GT3 2 Heating water GT3 3 Compressor GT6 and HTFcoll GT10 These are solely for the heat pump s internal usage Flow heating GT1 23 8 23 0 The actual temperature is shown ...

Page 23: ...ttings for addition appears 3 Press the right button once and the text Select function add heat only appears on the display 4 Press the right button once again and the text Addit heat only appears on the display 5 Press the right button Yes and OK is displayed confirming your choice 6 Repeat steps 1 5 to reconnect the compressor unit Press the left button a few times to return to the main menu Set...

Page 24: ...heating requirement If you feel it takes too long before the duration hot water becomes warm you can increase this temperature Remember that a higher value increases power consumption 1 Press the right button once and the text Set the house heating here appears on the display 2 Turn the dial until the text Settings for addition appears 3 Press the right button once and the text Quick start add hea...

Page 25: ...ant during autumn when the heating system starts up again The pressure gauge for the hot water 13 should normally be set at 0 5 1 5 bar If the pressure is lower than 0 5 bar you should fill with water up to around 1 0 bar See Operational disturbances Avoid repeated filling with small amounts of water since this could damage the heating system Protective anode An anode requiring no maintenance is l...

Page 26: ...pump s cold side outside the heat pump and protects the heat exchanger from dirt Sometimes these filters may get clogged and cause malfunctions To clean the filter Shut down the heat pump with the on off button on the control panel Close the valve and unscrew the sealing cover Check for dirt in the filter If necessary remove the circlip retaining the filter The simplest way to do this is by using ...

Page 27: ...electric box 5 once If the control panel goes off again contact your service engineer Also check that the manual operation switch is off 6 Is the display flashing This is not a fault It is part of the control unit s monitoring function Are the radiators cold despite the plant being switched on Check that the radiators are properly vented turn off the plant using the main switch when venting Vent t...

Page 28: ... on the display Acknowledge the alarm by pressing the right button once If the lamp goes off then all is well If the lamp stops flashing and turns into a steady red light wait for 1 2 hours Should the problem remain contact your service engineer Is the compressor not working If there is an alarm text on the display this is acknowledged by pressing the right button Should the alarm reoccur contact ...

Page 29: ...TE Use this function with care since your personal settings are deleted However those made by the service engineer or installer are retained To reset to factory settings 1 Press the right button once and the text Set the house heating here appears on the display 2 Turn the dial until the text Return to factory settings appears on the display 3 Press the right button once and the text Factory setti...

Page 30: ... the installer the heat curve by increasing or reducing the flow temperature to adapt to the selected indoor temperature A green control lamp on the front of the unit shows that the power is on and everything is working normally When the lamp flashes it means that the system is turned off Note that there is still power in the system A red control lamp indicates that something is wrong and the faul...

Page 31: ...tion there is a high sound level and no output You can tell that the compressor is operating in the right direction if the suction pipe to the compressor is cold and the pressure pipe out from the compressor is hot NOTE The pressure pipe could be extremely hot so be careful If the compressor is operating in the wrong direction switch conductor two T2 and three T3 on the underside of the motor prot...

Page 32: ...p GT3 3 Tank temp Electric element Evaporator GT1 Flow temperature Floor heating or radiators GT3 1 Tank temp Expansion vessel GT2 Outdoor temperature Compressor Fan Heat transfer fluid pump Ground coil For a combination of floor heating and radiators where two different flow temperatures are required install an intermediate shunt group GT3 10 Incoming heat transfer fluid temp INSTALLER ...

Page 33: ...ator 19 High pressure switch 20 Combi drier 21 Shunt valve 22 Overheat protection electric element reset on the underside of the electric box 23 Electric terminal 24 Thermostat for manual operation 25 Electric element 26 Condenser in the tank 27 Power card 28 Motor protection 29 Fan transformer 30 Miniature circuit breaker MCB 31 Main switch 32 Manual operation switch 33 Anode control unit 34 Cont...

Page 34: ...allation comply with the following instructions Information needs to be forwarded to each contractor by the customer builder Required installation space A free space of 600 mm is required in front of the unit Ventilation requires a ceiling height of at least 2 300 mm The lowest ceiling height to raise the unit is 2150 mm In addition at least 25 mm is required between the unit and other permanent i...

Page 35: ...n Standard pipe connections Waste water Return Riser HW CW HTF coll in HTF coll out View from the back Heat medium diagram Water flow l h and l s Wilo 25 6 L1 Wilo 25 6 L2 Wilo 25 6 L3 kPa Electrical lead throughs Available pressure INSTALLER ...

Page 36: ...sor centrally in the house e g in a hall with an opening to a living room etc The sensor must be positioned to avoid direct sunlight or other heat sources such as a kitchen or laundry room The conduits must be sealed here as well to stop warm air from penetrating and affecting the sensor reading Connect to terminal pos GT5 with 2 wire low current cable The sensor is best placed on the bottom floor...

Page 37: ...ust be supplemented with three transformers article number 9404497 NOTE These are ordered individually The cable between the electric box and the heat pump is not included Work must be carried out by a qualified electrician The power guard can be set for 16 20 25 and 35A Earth fault breaker Leaking current occurs in all electrical plants and in all earthed electric equipment The leakage increases ...

Page 38: ... to roof hood Refer also to the ventilation drawing Fireplace tumble dryer and kitchen fan If a stove e g a hot air stove is installed you should avoid suction pressure smoke in the house Make sure that the combustion air is supplied directly to the stove via a separate duct alternatively via an extra air inlet through an outside wall The stove should always have tight closing doors Drying cabinet...

Page 39: ...rmer cable according to the marking on the transformer 115V Speed 1 not on 495 TWIN 125V Speed 2 not on 495 TWIN 135V Speed 3 150V Speed 4 180V Speed 5 230V Speed 6 The IVT 495 TWIN requires at least fan speed 3 Move this cable black Adjusting the ventilation Ventilation diagram Air flow m h Pressure Pa 230 0 115 125 135 150 180 INSTALLER ...

Page 40: ...use an elbow coupling for sharper bends If you damage the hose by bending it too much you can repair it with a straight coupling IVT 495 TWIN Ground coil Heat pump Bore depth Ground coil 150 metres 50 metres The hose length must be increased for exhaust airflows less than 120m h contact IVT for further information Max hose length is 400m Minimum distance between hose and house 1 5m The hoses must ...

Page 41: ... Min 0 5m from boundary to neighbours Placement of ground coil Outline drawing The ground coil should be placed in relation to the shape of the site An example is provided below Do not remove snow from above the coil since it insulates the ground heat INSTALLER ...

Page 42: ...o be used The collector hose is pulled into the drainage pipe and is foamed from above after installation Ready ground level Approx 1m IVT 495 TWIN 40 cm Exp vessel Filling material 90cm Front Particle filter Safety valve Hoses must be insulated over the final 1 5m towards the house foundation to avoid frost damage Min bending radius 0 5 m Installation space 40x90cm is required next to the heat pu...

Page 43: ... pressure is 0 5 1 5 bar d Close the filling tap 2 when the correct pressure is reached e Remove the cover on the electric box and set the thermostat 3 for a flow temperature of 35ºC with floor heating factory setting or 45ºC for a radiator system NOTE For floor heating do not set a temperature higher than allowed for the floor heating system in question See the supplier s instructions f Fill the ...

Page 44: ...hould be run in manual mode Set the manual operation switch 4 in the On position The control panel will be turned off and the water heated to the temperature set on the thermostat 3 NOTE Changes to the thermostat 3 must be carried out by a qualified person to avoid unnecessary damage to the heating system On start up when the system still is cold the heat pump will prioritise heating of duration h...

Page 45: ...eturn pipe are usually contaminated Therefore collect these in a separate vessel Open the expansion vessel valve until the vessel fills to around 2 3 When the level in the barrel has sunk to 25 stop the submersible pump and fill the barrel with the antifreeze mixture When the system is full and air is no longer coming from the return pipe the system is run for at least a further 30 minutes You can...

Page 46: ...ting system see List of Components so that the pressure gauge 1 shows 0 bar 3 Then open the draining valve located on the T pipe in front of the compressor 2 Open by turning the dial anti clockwise The draining valve has a 1 2 inch external thread to which the draining hose can easily be attached 4 To empty the heat pump of heating water open the venting nipple or safety valve see List of componen...

Page 47: ...nless 163 litres Highest outgoing HTF temperature ºC 58 Lowest incoming HTF collector temperature ºC 5 HTF R134a kg 1 5 Connection hot cold water mm 22 Connection HTF mm 22 Connection HTF collector mm 22 Connection waste water mm 32 Connection exhaust air mm 125 Dimensions height x width x depth mm 2090 x 600 x 615 Weight kg 195 Weight including water kg 415 Max working pressure HTF bar 1 5 Max wo...

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