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1 USER INSTRUCTIONS
1.1 Intended Use
The Warmflow Air Source Heat Pump units are intended for the production of hot water for
space heating and sanitary water. The units can be used to provide heating and domestic hot
water (DHW) via underfloor heating circuits, radiators and approved hot water cylinders. The
units are designed to extract heat from the air.
1.2 Compliances
The Warmflow AS01, AS02 and AS03 air source heat pump units are Microgeneration
Certification Scheme (MCS) approved and CE marked. They are approved on the Renewable
Heat Incentive Eligibility list and can be found on both the Product Characteristics Database
(PCDB) as well as the Home-heating Appliance Register of Performance (HARP) database. As
such the units comply with the following directives and are tested to the following standards:
MCS 007 Issue 3.0 - Product Certification Scheme Requirements: Heat Pumps.
2006/95/EC - Low Voltage Directive.
2004/108/EC - Electromagnetic Compatibility Directive.
97/23/EC - Pressure Equipment Directive.
EN14511 - Air conditioners, liquid chilling packages and heat pumps with electrically
driven compressors for space heating and cooling.
EN14825 - Air conditioners, liquid chilling packages and heat pumps, with electrically
driven compressors, for space heating and cooling. Testing and rating at part load
conditions and calculation of seasonal performance.
EN 60335-1 - Household and similar electrical appliances. Safety. General requirements.
EN 60335-2-40 - Household and similar electrical appliances. Safety. Particular
requirements for electrical heat pumps, air-conditioners and dehumidifiers.
EN 61000 - Electromagnetic compatibility (EMC). Limits.
EN 378 - Refrigerating systems and heat pumps. Safety and environmental
requirements.
ENV 12102 - Air conditioners, liquid chilling packages, heat pumps and dehumidifiers
with electrically driven compressors for space heating and cooling. Measurement of
airborne noise. Determination of the sound power level.
1.3 Basic Operation
Heat flows from an area of higher temperature to an area of lower temperature. In much the
same way that a water pump, pumps water from a low level to a higher level, a heat pump
pumps heat from a source at a low temperature to a source at a higher temperature. The
benefit of this is that natural sources such as the air and ground, which are at relatively low
temperatures, can be used to heat buildings at a higher temperature. In order to do this the
heat pump uses a relatively small amount of electrical energy. The proportion of electrical
energy used to do this is much smaller than the heat power delivered to the building. The ratio
of the heat power delivered to the electrical energy used determines the efficiency of the heat
pump and is commonly known as the coefficient of performance (COP).
Summary of Contents for Air Source A-Series
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