2 Introduction
Instructions for installation and servicing aquaPLUS VUI 362-7
4
2 Introduction
2.1 General Information
aquaPLUS boiler
The aquaPLUS is a fully automatic, wall mounted, room
sealed combination boiler for central heating and
domestic hot water. The boiler has an integrated 15 litre
stainless steel
power store
for enhanced domestic hot
water delivery. Domestic hot water is supplied directly
from the boiler, without requiring a copper cylinder, cold
water tank, feed and expansion tank and associated
pipework. Domestic hot water has priority over central
heating.
The aquaPLUS boiler has an output for domestic hot
water of 36.9 kW. The appliance is available in natural
gas only.
aquaPLUS combination boilers incorporate a pre-heat
facility that keeps the
power store
hot, providing an
instantaneous delivery of domestic hot water.
The temperature in the domestic
power store
is limited
by the boiler control system and it is not necessary to
install a scale reducer on the cold mains to the boiler.
However, in exceptionally hard water areas to prevent
scale formation in the property hot water system
pipework, a scale reducer may be fitted.
The heating system can be filled using the built-in filling
loop contained within the boiler.
No asbestos, mercury or CFC's are included in any part
of the boiler.
Warning!
When tightening or slackening screwed
connections always use suitable open-ended
spanners (not pipe wrench, or extensions, etc.).
Incorrect use and/or unsuitable tools can lead
to damage being caused (e.g. gas or water
leakage)!
2.2 General Notes
The boilers have been designed for use with a sealed
central heating system, and come fully tested and
assembled with a built in circulating pump, expansion
vessel and diverter valve. The boilers are not suitable
for use on open vented systems.
The boilers are easily sited on any internal wall and can
be installed with either a horizontal or vertical RSF
(room sealed fan assisted) flue. Two types of flue
systems are available, the standard concentric flue
system (100 mm outside diameter) and a larger
diameter concentric flue system (125 mm outside
diameter) which allows longer flue lengths to be
achieved. Flue extensions and additional bends and
elbows are available for both flue systems to increase
the siting flexibility.
The boilers are not suitable for external installation.
If desired, an inhibitor may be used in the system.
Guidance on the use of inhibitors is contained in these
instructions. All boilers have a built in diagnostic system
which indicates the operational status of the boiler.
This feature provides key information to aid
commissioning and fault finding.
2.3 Showers
Only thermostatically controlled showers must be fitted
with aquaPLUS boilers to guard against the flow of
water at too high a temperature and to ensure constant
shower outlet water temperatures.
The data badge is fitted on the rear of the control panel.
See text of General Requirements for installation
requirements or notes.
Vaillant Ltd. support the Benchmark initiative.
In this installation manual you will find the Benchmark
gas boiler commissioning checklist. It is very important
that this is completed correctly at the time of
installation and commissioning.
2.4 EC designation
aquaPLUS boilers carry the "CE" Mark. This
demonstrates that the boilers fulfil the essential
requirements of the Gas Appliance Directive
(90/396/EEC) and the Gas Appliance (Safety)
Regulations 1992.
The "CE" Mark also demonstrates that the boilers
comply with the requirements of the Electromagnetic
Compatibility Directive (89/336/EEC), the Low Voltage
Directive (72/23/EEC), the Boiler Efficiency Directive
(92/42/EEC) and the Boiler (Efficiency) Regulations
1993.
Note:
This boiler must be installed and serviced by a
competent person in accordance with the Gas Safety
(Installation and Use) Regulations 1998. In the UK
"CORGI" registered installers undertake the work to a
safe and satisfactory standard.
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