Vaillant ecoTEC plus 937, Инструкция по эксплуатации и обслуживанию, Страница: 11 / 64

11 Installation and maintenance instructions ecoTEC plus 0020031552_03
The ecoTEC plus 937 is a fully-automatic wall-mounted
unit with condensing technology for central heating and
hot water preparation and with a shift load storage tank
for the storage of hot water.
Mains cold water heated by the combi boiler is fed to
the heat insulated storage tank by means of a modulat-
ing storage tank charging pump.
The provision of hot water takes place directly from the
combi boiler without the need for a copper cylinder, a
cold water tank or a supply and expansion vessel with
the corresponding pipework. The provision of hot water
has priority over the central heating.
The combi unit supplies the shift load storage tank with
electrical energy for the storage tank charging pump.
The combi unit is equipped with a warm start function
which keeps the heat exchanger hot so that hot water is
immediately available.
The temperature in the hot water heat exchanger is lim-
ited by the control system.
Fitting a water softener on the mains cold water inlet of
the combi boiler is not necessary. In regions with ex-
tremely hard water (greater than 300 mg/l of CaCO
3
)
however a water softener may still be fitted in order to
prevent the formation of scale build up in the water pipes.
The heating system can be filled using the filling devices
fitted to the ecoTEC plus combination boilers.
The ecoTEC plus 937 is be supplied for natural gas and
can be converted for propane gas with a conversion kit.
3 General requirements
3.1 Preliminary remarks for room sealed appli-
ances
This appliance should only be installed in conjunction
with either a Vaillant flue system or an alternative ap-
proved system (details of flue approval categories can be
found in the technical section of the installation manual).
Install the flue system as detailed in the separate flue
installation instructions supplied with this boiler.
3.2 Related documents
The installation of the boiler must be in accordance with
the relevant requirements of Gas Safety (Installation
and Use) Regulations 1998, Health and Safety Document
No. 635 (The Electricity at Work Regulations 1989),
BS 7671 (IEE Wiring Regulations) and the Water Supply
(Water Fitting) Regulations 1999, or The Water Bylaws
2000 (Scotland). It should also be in accordance with
the relevant requirements of the Local Authority, Build-
ing Regulations, The Building Regulations (Scotland),
The Building Regulations (Northern Ireland) and the rel-
evant recommendations of the following British Stand-
ards:
BS 6700: Services supplying water for domestic use
within buildings and their curtilages.
BS 6798: Specification for installation of gas fired boil-
ers not exceeding 60 kW input.
BS 6891: Specification for installation of low pressure
gas pipework up to 28 mm (R1) in domestic premises
(2nd family gas).
BS 7593: Treatment of water in domestic hot water cen-
tral heating systems. – Institute of Gas Engineers Publi-
cation IGE/UP7 Edition 2
BS 5482: Pt. 1 Domestic butane and propane gas burn-
ing installations.
IGE/UP1: Soundness testing and purging of industrial
and commercial gas installation.
IGE/UP2: Gas installation pipework, boosters and com-
pressors on industrial and commercial premises.
IG/UP/7 Edition 2 „Gas installations in timber framed
and light steel framed buildings“
IGE/UP10. Installation of gas appliances in industrial and
commercial premises.
BS 6644: Installation of gas fired hot water boilers of
rated inputs between 60 kW and 2 MW (2nd and 3rd
family gases).
BS 5449: Forced circulation hot water central heating
systems for domestic premises. Note: only up to 45 kW.
BS 6880: Low temperature hot water heating systems
of output greater than 45 kW.
Part 1 Fundamental and design considerations.
Part 2 Selection of equipment.
Part 3 Installation, commissioning and maintenance.
BS 4814: Specification for: Expansion vessels using an
internal diaphragm, for sealed hot water heating sys-
tems.
BS 5440: Installation and maintenance of flues and ven-
tilation for gas appliances of rated input not exceeding
70 kW net (1st, 2nd and 3rd family gases).
Part 1 Specification for installation of flues.
Part 2 Specification for installation and
maintenance of ventilation for gas appliances.
European installation directive
a
Caution!
Installation and maintenance of the unit may
only be undertaken by a competent person in
accordance with the "Gas Safety (Installation
and Use) Regulations 1998".
In IE the installation must comply with the cur-
rent Version of I.S.813 ‘Domestic Gas Installa-
tions’ and the current Building Regulations. The
current ETCI Regulations for the installation of
electrical equipment must also be observed.
Caution!
To tighten or loosen bolts, only use suitable
open-ended spanners (do not use wrenches or
extensions etc.).
Improper use or unsuitable tools can cause da-
mage, (such as gas or water leaks.)
Unit description, data and dimensions 2
General requirements 3