Nibe Ukv 40 Accumulator Tank User Manual (+ PDF)

NIBE UKV 40 Accumulator Tank

Important information

SAFETY INFORMATION

This manual describes installation and service procedures for implementation by specialists.
The manual must be left with the customer.

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shallnot play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
This is an original manual. It may not be translated without the approval of NIBE. Rights to make any design or technical modifications are reserved. ©NIBE 2023.

SYMBOLS

Explanation of symbols that may be present in this manual.

NOTE
This symbol indicates danger to person or machine.

Caution
This symbol indicates important information about what you should consider when installing or servicing the installation.

MARKING

Explanation of symbols that may be present on the product’s label(s).

GENERAL

UKV 40 is designed and manufactured according sound engineering practice1 in order to ensure safe usage.
1 Pressure Equipment Directive 2014/68/EU Article 4 point 3.

SERIAL NUMBER

The serial number can be found on top of the product.

Caution Always give the product’s serial number when reporting a fault.

RECOVERY

Leave the disposal of the packaging to the installer who installed the product or to special waste stations. Do not dispose of used products with normal household waste. It must be disposed of at a special waste station or dealer who provides this type of service.
Improper disposal of the product by the user results in administrative penalties in accordance with current legislation.

INSPECTION OF THE INSTALLATION

Current regulations require the heating installation to be inspected before it is commissioned. The inspection must be carried out by a suitably qualified person.

Description	Notes	Signature	Date
Heating medium (page 14)
Shut off valves
Safety valve

For the User

MAINTENANCE

The safety valve in the system where the accumulator tank is installed must be inspected regularly (about four times a year) to prevent blockages.
To inspect the valve, open the safety valve manually and check that water flows through the overflow pipe. If this does not happen then the safety valve is defective and must be replaced.

SERVICE

For service, contact the installer. Serial number (PZ3) (14 digits) and installation date should always be stated. Only replacement parts supplied by NIBE may be used.

For the Installer

GENERAL

UKV 40 has several different areas of use.
UKV 40 can be used during external control of the heating system. The heat pump then charges UKV 40 with floating or fixed condensing. The external control function controls the heat distribution from UKV 40 to the consumer.
If the flow to the heating system can be restricted using radiator thermostats, for example, install a UKV 40 as an intermediate tank. This ensures a secure flow for the heat pump.

UKV 40 also allows a greater flow to the heating system than across the heat pump.

In some installations, so-called heating clicks occur as a result of movements during changes in temperature. To eliminate temporary changes in temperature, and thereby prevent heating clicks, install a UKV 40 after the heating installation.

UKV 40 can also be used to increase the system volume and thereby prevent malfunctions.

The accumulator tank consists of a condensation-insulated steel vessel with polyurethane insulation. Outer cladding in white, powder-coated sheet metal with ends of durable plastic.

The accumulator tank is designed and manufactured for a maximum cut-off pressure of 6 bar. The working temperature is +4 to +95 °C.

TRANSPORT

UKV 40 should be transported and stored in the dry.

ASSEMBLY

The accumulator tank must be installed in a dry area at a temperature that does not drop below 0 °C (frost-free).

MOUNTING

UKV 40 has to be installed vertically suspended on the wall. First install the enclosed mounting bracket on the wall, then suspend UKV 40 from the bracket.

SUPPLIED COMPONENTS

Suspension bracket.

COMPONENT LOCATION

UKV 40

Designa- tion	Name
UL2	Holes for wall bracket
PZ3	Serial number plate

INSTALLATION

All connections (including connections or holes that are not used) must be insulated to minimise energy losses.

DOCKINGS

NOTE These are outline diagrams. Actual installations must be planned according to applicable standards.

Volume increase as well as reduction of heat spikes

A UKV 40 is installed as a volume increaser in those cases where the system volume in the climate system is below the minimum recommended volume for the heat pump. Volume and flow increaser and reduction in heat spikes

A UKV 40 is installed as a volume and flow increaser in those cases where the system volume in the climate system is below the minimum recommended volume for the heat pump and/or the flow is restricted without control.

Volume increase as well as reduction of heat spikes

A UKV 40 is installed as a volume increaser in those cases where the system volume in the climate system is below the minimum recommended volume for the heat pump.

PIPE INSTALLATION

Pipe installation must be carried out in accordance with current norms and directives.
The drain valve is installed on the heating system’s supply line (XL1).
The system where UKV 40 is installed must be supplied with a safety valve of max. 6 bar (0.6 MPa).
The overflow pipe must be the same size as the safety valve’s. Route the overflow pipe from the safety valve, sloping along its entire length, and ensure that it is frostproof and well supported. The mouth of the overflow pipe must be visible and not placed close to electrical components. Ensure that incoming water is clean.
If uncertain, contact a plumber alternatively see applicable standards.

FILLING

Fill the accumulator tank as follows:

Vent the accumulator tank by loosening the connection (XL8) at the top of the accumulator tank.
Fill the vessel through the drain valve.
When only water comes out of the connection (XL8) (an air-water mixture emerges initially), the connection can be closed and the accumulator tank is filled.