3VPA 300/200, 450/300
For Home Owners
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct
equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturers instructions by competent persons
and that it meets the requirements of the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the customer for future reference.
Installers are required to carry out the installation, commissioning and servicing work in accordance with the Benchmark Code of Practice which is
available from the Heating and Hotwater Industry Council who manage and promote the Scheme.Visit www.centralheating.co.uk for more informa-
tion.
System description
System description
Unvented water heater for use with ground source heat
pump / air source heat pump units for central heating and
tap water production.
CP
HR
FG
RGBV
SMO 10
UG
BVAV
CPRV SF
TV
SÄV
SÄV
VXV
VVG
VPA
VP
HR
SÄV
AV
BV AV
EXP
Tillsatsvärme
Additional heat
T&P
Note! This is an outline diagram. Actual installations must be planned according to applicable standards.
Components
AV Shut-off valve
BV Non-return valve
CP Circulation pump
EXP Expansion vessel
FG Flow line sensor
HR Auxiliary relay
RG Return line sensor
RV Control valve
SF Particle filter
SÄV Safety valve
T&P T&P-valve
TV Drain valve
UG Outdoor sensor
VP Heat pump
VVG Hot water sensor
VXV Reversing valve
Additional heat
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