Basics; Safety Instructions; Intended Use - meibes UK Instructions De Montage Et De Fonctionnement

1. Basics

1.1 Safety instructions

Please follow these safety instructions faithfully to eliminate hazards, personal injury and material damage. The installation, commissio-
ning, inspection, maintenance and servicing may only be performed by an approved, specialist company. Please familiarise yourself with
all the parts and their handling before starting work. Observe the applicable accident prevention regulations, environmental regulations
and legislation for the assembly, installation and operation of the system. In addition, observe the applicable safety provisions of the DIN,
EN, DVGW, VDI and VDE and all relevant country-specific standards, laws and guidelines.
When working on the system: Disconnect the system from the mains and monitor it to ensure that no voltage is being supplied (e.g. at the
separate cut-out or a main switch). Secure the system against being restarted. (With gas-fuelled systems, close the gas shut-off valve and
secure it to prevent it from being opened unintentionally). Repairs to components with a safety function are not permitted. The installation
location must be dry and frost proof. Hazards resulting from adjacent components must be avoided. Free access must be ensured.

1.2 Intended use

The components listed in the following instructions are intended for use in heating systems according to DIN EN 12828. Operation with a
contaminated heat transfer medium is prohibited - this includes, among other things, foreign particles, substances that cause scaling and
oxygen. The power supply for the recirculation pumps is managed on demand by an external controller – as is the control of the speed
regulation. A backflow preventer, usually integrated within a ball valve and manually adjustable, prevents the flow from travelling in the
wrong direction. Delivery includes the materials required for integration in systems with a suitable manifold. Accessories allow use as an
individual component
Pump groups UK, UK-Z
The pump groups UK and UK-Z are designed for the recirculation of heating water in unmixed heating circuits. Typical applications include
radiator heating and tank charging.
Pump groups MK, MK-Z
The pump groups MK and MK-Z are designed for the recirculation of heating water in mixed heating circuits. Typical applications include
underfloor and wall heating. Some variants require an actuator for the mixer as an accessory.
Constant heat regulation set
Used like an MK but with a pre-installed actuator and fixed set-point controller set. Typical applications include heating systems with tem-
perature limitation for protecting the system parts, or with a downstream controller for supplying heat on demand.
Separation system
Used like a UK, but includes a plate heat exchanger for the hydraulic separation of the heating circuit from the rest of the system. The set
includes protection against overpressure in the separate heating circuit. The recirculation pump is corrosion-resistant. Typical applications
include heating circuits with permeable plastic pipes (older underfloor heating systems) or with certain heat transfer media (e.g. antifreeze)
or with another system pressure.
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