Vaillant aquaPLUS VUI 362-7 Service Manual download pdf (Page 4)

2 Introduction

Instructions for installation and servicing aquaPLUS VUI 362-74

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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Vaillant aquaPLUS VUI 362-7 Service Manual Page 4

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