CTC Union GS 6-8 Handbuch

CTC GS 6-8

End customer overview

CTC GS 6-8

Ground source heat pump

1. Sign the installation checklist.

2. Serial no. behind touchscreen.

3. Bleed radiator system and products,

approx. one month after installation + at least

once per year.

4. Screw in/close the bleed screw on the au-

tomatic bleeder approx. three months after

installation.

5. Fit/turn the safety valve,

approx. four times per year.

6. Check the system pressure regularly and ask

the installer what system pressure your system

should have. The system pressure must be

set 0.3 bar higher than the pre-pressure in

the expansion tank.

7. Regularly clean the dirt ﬁlter (close off incoming

tap water; remove and clean the ﬁlter)/solenoid

ﬁlter ball valve (close off the ﬂow to the heat

pump; remove and clean the ﬁlter).

8. Set the correct heating curve for a comfortable

room temperature; check that the thermostat

valves on the element or ﬂoor heating are set

up correctly. These may need to be opened.

9. Set the hot water mode according to your

requirements.

Read the full instructions in the Installation and

Maintenance Manual

162 205 98-1 2018-09-26

4. automatic bleeder

2. serial number for registration

behind screen which can be

tilted

3. & 5. safety valve

7. dirt filter for

tap water

7. solenoid

filter ball valve

8 & 9. touchscreen

6. manometer

2CTC GS 6-8

Touchscreen

All product settings are set up via the touchscreen. Set the heat and hot

water settings here.

Outdoor sensor

Measures outdoor temperature; placement

should not be in direct sunlight or where

the measured outdoor temperature may be

misleading. The outdoor sensor provides the

product with information on the current need

for heat.

Room sensor

Measures indoor temperature and finely

adjusts the heating curve so that the product

runs more evenly. The room sensor is optional

and the product can work using only the

heating curve. The room sensor should

preferably not be activated until the heating

curve has been completely adjusted. The

room sensor is fitted at a central point in the

house, in the most open position possible.

This is the best position for the sensor to

record an average temperature for the house.

Clean, safe hot water

The water in the tank (as in the heat pump

and radiators) rises and is layered so that

the hottest water surrounds the DHW heat

exchanger where the tap water flows through

quickly, draws energy and flows out to the tap

or shower. This provides fresh hot water and

minimises the risk of legionella bacteria.

Cooling module

The energy in the bore hole (bedrock) or

ground is drawn up by the cooling system. The compressor then increases

the temperature to a usable level. Afterwards it releases the energy for

the heating system and hot water. Remember that the brine fluid must be

checked and refilled as needed.

Electrical operation

The product can also provide both heating and hot water to the building

when running on electricity only. With the heat pump connected, the

immersion heater works to provide additional heat as needed only. The

touchscreen can be used to set whether the immersion heater goes in and

with how much power.

Touchscreen

DHW heat

exchanger

Electrical

heat

Hot water

tank

Cooling

module

CTC GS 6-8

1 heating circuit

Basic installation, CTC GS 6-8

Options with CTC GS 6-8

* In addition to the basic installation, accessories are required such as: Extra sensor, mixing valve group 2, expansion

card etc.

Volume tank CTC VT 80 may be required for some houses (see installation manual for more information).

4CTC GS 6-8

See operation data

Room temperature heating circuit 1

-Measured by

Room sensor 1

Room temperature heating circuit 2

-Measured by

Room sensor 2

Tank temperature

-Measured by

Hot water sensor in the top of the tank.

Outdoor temperature

- Measured by

Outdoor sensor

Alarm management

See troubleshooting chart at the very

back of the installation manual.

Navigate on the touchscreen

Home

The Home button

takes you back to the

Start menu.

Return

The Return button takes

you back to the previous

level.

The OK button is used

to mark and confirm

text and options in the

menus.

+ / -

Press + to increase value

Press - to decrease

value

Arrow & OK

Press up arrow

to increase value

Press OK to

save settings

Press down

arrow to

decrease value

Home screen

Larm: [E055] Fel fasföljd

Återställ larm

Larm:Felfasföljd kompressor

Återställ larm

Green LED – status OK

Red LED – alarm

The serial number

(12 digits) can be

found behind the

display. This number

needs to be given

to the installation

engineer and CTC

support in the event

of a fault report.

Press to see detailed information on each

part

Call your installation engineer in the first

instance

Serial number

XXXX-XXXX-XXXX

article group–year/week–sequential number

serial number

software update

Alarm: Wrong phase order

compressor

Reset alarm

22,2 ºC 21,2 ºC 58 ºC -5 ºC

Room temp. DHW Operation

CTC GS 8 Monday 09:35

Installer

Operation data system

1 2 2

CTC GS 6-8

More settings and tips in the installation and service manual

Fine adjustment Increase/decrease heat

If the outdoor

temperature is lower

than 0°C.

Change inclination

Coarse adjustment Increase/decrease heat

Select:

Heating circuit

If the outdoor

temperature is higher

than 0°C.

Change adjustment

Heating circuit

Max primary flow ºC 60

Min primary flow ºC Off

Heating, mode Auto

Heating, mode, ext

Heating off, out ºC 18

Heating off, time 120

Inclination ºC 50

Adjustment ºC 0

Night reduction disable ºC -14

Room temp reduced ºC -2

Primary flow reduced ºC -3

Alarm room temp ºC 5

Smart low price ºC 1

Smart over capacity ºC 2

Max time heating 20

Charge pump % 60

Drying period mode Off

Drying period temp ºC 25

Push OK to confirm

changes

Set heating

1 2

Night reduction Holiday

Heating circuit 2 (50)

Heating System 1

Room temp.

Measured temp

Room sensor

Desired

Setpoint

1 2

Night

reduction

-Set a higher

or lower

temperature at

certain times of

day.

Holiday

-Set higher or

lower temperatures

on certain days.

Fine adjustment with

no room sensor. To

allow the temperature

to be changed even

more, use the coarse

adjustment on the

right.

Change hot tap water temperature

For detailed information on other hot

water settings, please refer to the

Installation and Maintenance instructions.

Control normal mode for hot water

production.

Economic – Small DHW requirement.

Normal – Normal DHW requirement.

Comfort – Large DHW requirement.

Weekly program

- Set weekly interval

for extra hot water

Set hot water

The product will start to

produce additional hot

water.

Extra

hot water 0.0 hours

Temperature

Normal

Weekly program

DHW

Installer

“Installer” is used by the installer to configure the settings and servicing for

your heating system.

Allow additional heat and immersion heater for safe comfort

at all times

To ensure hot water comfort in all operating conditions, it may be

necessary to allow additional heat. If there is no heat pump or other

heat source installed, these settings need to be changed so that

the product can function as an electric boiler.

Select: Hot

water tank

++Change:

Add heat DHW – Yes

1 2 2

Rumstemperatur Varmvatten

1 2 2

Rumstemperatur Varmvatten

1 2 2

6CTC GS 6-8

Heat settings

The product regulates itself to provide a constant, comfortable temperature

throughout the year using the set heating curve. The curve may need to be

changed using the touchscreen if the room temperature feels too cold or hot

over time. For information on how to do this, see “Navigate touchscreen”

on the previous page. Correction may be required for a few weeks after

installation until the system has been matched to the building. For more

information, see the Installation and Maintenance Manual, section: The house

heating curve.

Examples of inclination values for different systems

Floor heating only inclination = 35

Low temperature system (well insulated houses) inclination = 40

Normal temperature system (factory setting) inclination = 50

High temperature system (older houses, small radiators, poorly insulated) inclination = 60

Example in image:

1. Inclination 50, Adjustment 0°

2. Inclination 40, Adjustment 0°

3. Inclination 50, Adjustment 5°

Find the right heating curve

• The heating curve for the house is determined by two main factors:

inclination and adjustment. These can be changed to fit the house’s

energy needs for heating.

• The house’s heating needs depend on:

The size of the house (volume/area)

Insulation

Window area

-> inclination and adjustment increase the more energy is required

• Thermal conductivity of the radiators

- Elements

- Floor heating

- Number of elements/surface for heat transfer

-> inclination and adjustment decrease the faster energy is discharged

outdoor

temperature

water temp. out on the elements

inclination

adjustment

Change inclination when

outdoor temperature < 0°C

Change adjustment when

outdoor temperature > 0°C

(inclination 50)

(inclination 40)

CTC GS 6-8

The total energy consumption of the product is linked to:

• The energy needed by the house, which varies significantly through

the year depending on the outdoor temperature (see image on energy

consumption, right).

• DHW consumption.

iRemember:

• Energy consumption is much higher in the winter

months than in the summer months

• Energy consumption increases when DHW

consumption is high

• What is important is the total energy bill for the year.

Energy-saving tips

• Make sure that the thermostat valves on the house’s element are open in

most rooms; only adjust downwards in bedrooms, for example.

• Use the DHW chart for extra DHW to avoid high-temperature operation

when it is not needed.

• Install a room sensor; this provides more even heat and compensates for

natural solar radiation or other natural heat sources.

• Clean any dirt filters regularly; a deterioration in water flow can increase the

electricity used by the circulation pump.

• Make sure the speed of the charge/circulation pump provides the right flow

(see the chapter “System adjustments” in the Installation and Maintenance

Manual).

Energy consumption

kWh

Checklist

The checklist must always be completed by the installation engineer

• In the event of a service, this information may be called for.

• Installation must always be carried out according to the installation and maintenance instructions.

• Installation must always be carried out in accordance with best professional practice.

• Following installation, the unit must be inspected and checked for functionality.

The points below must be checked off.

Pipe installation

Product filled, positioned and adjusted in the correct manner according to the instructions.

Product positioned so that it can be serviced.

Capacity of charge pump (G11) adjusted for correct flow.

Open radiator valves and other relevant valves.

Tightness test.

Bleed the system.

Safety valve function test.

Waste pipe connected to floor drain.

Electrical installation

Omnipolar switch

If the heat pump is installed: heat pump activated and started

Electric power (kW) and fuse, adapted to the property, in heating mode, in hot water mode and backup mode

Correct tight wiring

Requisite sensors for selected system

Outdoor sensor

Room sensor (optional)

Current sensor

Accessories

Information for the customer (adapted to current installation)

Start-up with customer/installer.

Menus/controls for selected system

Installation and maintenance manual supplied to the customer

Check and filling, heating system

Trimming information, heat curve

Alarm information

Safety valve function test

Warranty and insurance

Information on procedures for fault registration

The above points have been reviewed upon installation

Date/Place Signature/DHW installation engineer Tel. no.

Customer’s signature Signature/Electrician Tel. no.

Product Serial number

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