Grant Spira 5-18, Инструкция для пользователя, по установке и обслуживанию

Страница: 33 / 108

33
4 Installation Information
4.1 Introduction
For the 5-18, 6-26 and 9-36 models,
the appliance comes supplied on two
pallets:
•
Pallet 1 contains the intermediate
hopper, auger and auger feed
hose
• Pallet 2 contains the boiler, burner
and accessory box.
For the 11-44, 12-52, 15-62 and 18-72
models (‘double boiler’ installations),
the appliance comes supplied on two
pallets:
•
Pallet 1 contains the intermediate
hopper, augers and auger feed
hoses
• Pallet 2 contains both boilers, each
with burner and accessory box.
An accessories box is packed with each
boiler and this includes the following:
•
Fan box (complete with exhaust
fan, draught stabiliser and flue
connection
• Inspection pipe
(product code: WPB/IP)
• Condensate drain trap items
• Wash system manifold assembly
(complete with bracket)
• Pellet feed tube (supplied in two
parts)
• Pellet delivery hose
• Brazier clearance gauge plate
• AAV (complete with elbow and
bush)
• 2.5 bar PRV
• Ash pan lifting handles
• Removable (door) handle
The Grant Biomass flue system comes
separately and its configuration will
depend on the installation requirements.
4.2 Boiler Location
The boiler must be installed in a damp
free environment.
Refer to Section 2.4 for boiler and
hopper clearances. These clearances
are to allow for access during servicing.
Also if fitting a bulk hopper system refer
to Section 3.2.2 as the location of the
bulk hopper can influence the boiler
location.
4.3 Preparation for Installation
With the units on the pallet, remove all
outer packaging from the units. Unpack
the accessories box supplied with
the boiler and check the packing list
against all items present.
4.4 Installing the Boiler
The boiler and hopper must be
positioned on a level, solid, non-
combustible base of at least 125mm
thick. This must also extend past the
boiler and hopper by 225mm at the
front and 150mm on the remaining
sides. The boiler position must comply
with clearances shown in Section 2.4.
4.5 Regulations
Installation of a Grant Spira wood
pellet boiler and hopper must be
in accordance with the following
recommendations:
•
National Building Regulations and
any local Bylaws which you must
check with the local authority for
the area, e.g. Approved Document
J
• Model and local Water Undertaking
Bylaws
• MCS Installer Standards, i.e. MIS
3004 (if applying for the Renewable
Heat Incentive)
The installation should also be in
accordance with the latest edition of
the following standards and codes of
Practice:
• BS EN 12828:2012. Heating
systems in buildings. Design for
water-based heating systems
• BS EN 12831:2003. Heating
systems in buildings. Method for
calculation of the design heat load.
• BS EN 14336: 2004. Heating
systems in buildings. Installation
and commissioning of water based
heating systems.
• BS 7593:2006 Code of Practice for
treatment of water in heating
systems.
• BS 7671:2008 Requirements for
electrical installations, IET wiring
regulations.
• ONORM M7137 standard should
be used as a guideline for DIY bulk
storage units.
4.6 Heating System Design
Considerations
To achieve the maximum efficiency
possible from the Grant Spira wood
pellet boiler, the heating system
should be designed to the following
parameters:
Radiators
• Flow temperature 70°C
• Return temperature 50°C
• Differential 20°C
Size the radiators using a mean water
temperature of 60°C.
Design system controls with
programmable room thermostats, or
use weather compensating controls,
to maintain return temperatures below
55°C.
The use of a pipe thermostat is
recommended to control the return
water temperature when using weather
compensating controls.
Underfloor Heating
• Flow temperature 50°C
• Return temperature 40°C
• Differential 10°C
In underfloor systems it is essential
that the return temperature must be
maintained at or above 40°C to prevent
internal corrosion of the boiler water
jacket.
4.7 Pipework Materials
Grant Spira boilers are compatible with
both copper and plastic pipe. Where
Plastic pipe is used it must be of the
oxygen barrier type and be the correct
class (to BS 7291 - Part 1:2010) for the
application concerned.
!
NOTE
Failure to install and commission
the appliance correctly will
invalidate the boiler guarantee.
!
NOTE
The boiler should not be allowed to
operate with a return temperature of
less than 40°C when the system is
up to operating temperature.
Before starting any work on the
boiler or fuel supply please read the
Health and Safety information given
in Section 14.
!
WARNING