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27. Flow to heating system
28. Circulation pump heating circuit PC1
29.2nd Heating zone flow (optional)
30.Flow temperature sensor heating circuit T0
31. Double check valve with isolation valve, gauge port and pre-mounted
blanking cap
32.External filling link (braided metal hose with wing nuts) (*Remove
after the system is filled)
33. Isolation valve with pre-mounted blanking cap
34.Pressure gauge
35.Electrical heater 3kw (covered)
– 35a)Temperature safety switch for electrical heater - cable entry
at the front of the heater
– 35b) Temperature sensor flow primary flow from heat pump-Tc1-
cable entry at rear of the heater
– 35c) Power supply cable entry at the rear of the heater
36. Drain valve (cylinder)
37. Heat transfer medium in (from heat pump)
38.Drain Valve CH (Central Heating) system
39.Buffer vessel
3.2
Product identification
Data plate
The data plate contains performance data, approval data and the serial
number of the product.
The position of the data plate can be found in the product overview in this
chapter.
The G3 relevant symbols mean the following
Maximum pressure for space heating (bar)
Volume of domestic hot water cylinder (L)
3.2.1
Declaration of Conformity
The design and operating characteristics of this product comply with the
British, European and supplementary national requirements.
The UKCA and CE markings declare that the product
complies with all the applicable British and
European legislation, which is stipulated by
attaching these markings.
You can request the complete text of the Declaration of Conformity from
the UK address indicated in this document.
3.3
Standard accessories
3.3.1
Required system components
The following components are not included in the standard delivery but
are required for the initial startup and operation of the system.
Heating system:
• Automatic air vent valve [VL1]
• Expansion vessel
Hot tap water:
• Thermostatic valve hot water
Heat pump:
• Manual valve [VC4] between the indoor unit and the heat pump. The
valve is used when filling and venting the system. It is not allowed to
completely disconnect the heat pump from the indoor unit, therefore
only one valve is required.
Pre plumbed cylinder – 6 721 852 928 (2023/04)
3.3.2
Optional accessories
The following accessories can be added on and are not required for
operation of the system.
• Room controller
• Magnetite separator (system filter)
• Thermostatic valve hot water (required for DHW temperatures above
65 °C)
• DHW circulation pump
• Safety thermostat for under floor heating
• Non-return valve for the heating system
A non-return valve may be necessary to prevent self-circulation in the
heating system. This can mainly arise in the following situations:
• Heating system with radiators
• The indoor unit is installed below the heating system (basement or
multi-story building)
• The outdoor unit is installed on the same height or below the indoor
unit
4
Pre-Installation
NOTICE
Risk of damage to system or product!
Before installation
▶ All the following Pre-Installation sections must be read and
requirements met before starting product or ancillary equipment
installations.
▶ Run the connector pipes for the heating system and cold water/DHW
in the building up to the installation location of the indoor unit.
▶ This product is only suitable for installing internally within a property
at a suitable location onto a flat, fixed rigid surface at least the same
size as the product and capable of supporting the product weight.
▶ Product must be fixed to the floor using supplied mounting brackets.
▶ The system must be sealed and not open vented.
4.1
Placement of the indoor unit
• The indoor unit is placed in the building. The pipework between the
heat pump and indoor unit must be as short as possible. Use
insulated pipes.
• The maximum pipe length between the heat pump and the indoor unit
depends on the heat pump size as well as on the pipe diameter see
section 6.2
• The ambient temperature around the indoor unit shall be between
+10 °C and +35 °C.
• The unit must not be installed in a bathroom/wet room or outdoors
No surface protection is required against heat transfer from the product.
Pre-Installation
11
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