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WOLF Glossary

Technical terms around heating, ventilation, solar and indoor climate

A B C D E F G H I K L M N O P R S T U V W

A

Air change rate

Air distributor

Air source heat pump

Amortisation period

Atmospheric gas burner

B

Balanced flue chimney system

Bio natural gas

Boiler replacement

Brine (solar fluid/heat transfer medium)

Buffer cylinder

Burner modulation

C

Carbon dioxide (CO₂)

Central heating backup

Central heating backup

Combined heat and power generation

Condensing technology

Connection to the power grid

Controlled mechanical ventilation

Conventional boiler technology

Conventional heating system

Conventional low temperature boilers

Countercurrent heat exchanger

Customer service

Cylinder charging pump

Cylinder technology

Cylinder with internal indirect coil

Conventional low temperature boilers

D

DHW circulation pump

DHW cylinder adjacent to the boiler

DHW stratification cylinder

Diaphragm expansion vessel (DEV)

Directly heated DHW cylinder

Drilling operation

Dual wall cylinder

E

EHPA Quality Label

Electric heater | Electric heaters

Energy efficiency

Energy efficiency class

Energy footprint controller

Energy performance certificate

Energy Saving Ordinance (EnEV) [Germany]

Expansion vessel

Extract air areas

Extract and supply air vents

F

Feed-in contract

Flat-plate collector

Floorstanding boiler

Flue gas monitoring device

Freshwater module

G

Ground source heat pump (brine)

Gas combustion engine

Geothermal collector

Geothermal energy

Geothermal heat exchanger

Geothermal probe

German CHP Act (KWKG)

Gross calorific value

Gross heat yield

Ground source heat pump

Ground source heat pump (brine)

Ground source heat pump (water)

H

Heat led CHP systems

Heat pump heating system

Heat pump manager

Heating systems

High efficiency pump

High limit safety cut-out

Hydronic balancing

I

Indoor air handling technology

Installation room

Instantaneous water heater

Instantaneous water heating principle

Insulation technology

K

L

Low energy house

Low price phases

Low temperature components

M

Micro combined heat and power unit (micro CHP unit) – micro CHP systems

Mini combined heat and power unit (mini CHP unit)

Monoblock heat pump

Multi function cylinder

N

Natural cooling function

Net calorific value

Net calorific value

O

Oil condensing technology

Open flue vs room sealed

Outdoor and exhaust air apertures

Overall efficiency

Overflow apertures

P

Peak load boiler

Photovoltaic system

Plate heat exchanger

Potable water hygiene

Pressure-jet burner

Programming unit

Protective anode

R

Remote monitoring

Renewable Energy Sources Act (EEG)

Renewable energy

Renewable Energy Sources Act (EEG)

Room temperature controller

S

Safety assembly

Screw conveyor supply system

Scroll compressor

Seasonal performance factor

Selective coating

Serpentine pattern

Single storey heating

Smarthome system

Solar central heating backup

Solar circuit pump

Solar collector

Solar combi cylinder

Solar indirect coil

Solar stratification cylinder

Solar thermal heating

Solar thermal system

Solar thermal system controller

Solar | Solar thermal

Split heat pump

Standard seasonal efficiency [to DIN]

Standby energy consumption (standby heat loss)

Stiftung Warentest

Stratification cylinder

Stratification module

Suction well and return well

Supply air areas

System efficiency

System monitoring

T

Temperature controller

Thermal stratification

Thermostatic mixing valve

Two layer enamel coating

Types of air in ventilation systems

U

Underfloor heating system

V

Vacuum supply system

Vacuum supply system

W

Wall mounted boiler

Wall mounted condensing boiler

Wall mounted DHW cylinder

Wall mounted gas boiler

Wireless outside sensor