New Design
Baxi Heating UK Ltd
Brooks House
Coventry Road
Warwick
CV34 4LL
Tel:
08448 711538
Fax: 08448 711537
Email: newdesign@bdrthermea.com
Full Project Information Checklist
Completed Design Request Form
Plans for all house types
Sections for all house types
Elevations for all house types
Complete SAP data (if applicable)
*If all the above information is not received,
designs may be subject to delays.
Application for Heating System Designs
BDR Thermea Specification is pleased to offer to Builders, Developers and Housing Associations a
fully indemnified heating design service for domestic properties (subject to minimum numbers) for
BDR Thermea products only.
We are happy to offer advice on compliance with the latest regulations such as the Code for
Sustainable Homes and the building regulations.
Project Information
Client /Developer:
Address:
Contact Name:
Tel:
Email address:
Site Address:
No. of plots:
Site commencing date:
Baxi local representative (if known):
On completion, all designs will be sent to the email address provided above.
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PLEASE NOTE:

It is vital that all information boxes where possible in this form, are completed to enable us
to commence design with out delay.

Plans, sections, elevations/window schedules and site plans (where applicable) must
accompany all job requests. Until full and final information is received, jobs may be placed
on hold which may result in the delay of completed designs.

Hard copy/PDF plans at a scale of 1:50 or AutoCAD should be submitted with this request
form.

Maximum property size for a design is 450 sq. metres.

New Design will not carry out designs on refurbishment properties, unless all U values are
clearly defined.

If applicable, please provide housing association specification.
1. Design Parameters
Site water pressure
bar.
Please attach copy of 7 day trace.
Designs will be based on average ‘U’ values as stated in Building Regulations L1A 2010, as shown in
Table 2 below. Should you require different ‘U’ values, please amend Table 2, below:
Table 2 – ‘U’ Values
Baxi recommended
External Walls
Internal Walls
Floors
Doors
Windows
Roof
0.30
0.60
0.25
2.00
2.00
0.20
If alternative values required, please
complete below:
External Walls
Internal Walls
Floors
Doors
Windows
Roof
Room temperatures and air change rates will be in accordance with NHBC guidelines and BS 5449.
Should you require different room temperatures and air changes, please amend table 3, below:
Table 3 – Temperatures & Air Changes
Baxi recommended
If alternative values required, please
complete below
Room Type
Temp.
Air Change Room Type
Temp. Air Change
(°C)
(°C)
Living Areas
21
1.5 a/c/h
Living Areas
Hall & Landing
18
1.5 a/c/h
Hall & Landing
Bathrooms
22
2.0 a/c/h
Bathrooms
Kitchen/Utility
18
2.0 a/c/h
Kitchen/Utility
Bedrooms
18
1.0 a/c/h
Bedrooms
All designs will be prepared to an external temperature of -3°C.
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2. Products to be specified (Designs will be completed for Baxi Group Products only)
Please fill in Table 4 below, on system product choice.
Table 4 – Product Specification
Fuel Type
Boiler Type
SAP Beneficial
Accessories
Solar System
Boiler Model
Cylinder
Elson Products
Radiator Manufacturer
Natural Gas
Heat Only
GasSaver
Electric
System
Heatsaver
Baxi
Potterton
Megaflo Eco
Elson Aquanox
LPG
PremierPlus
Elson Packages
Biomass
Combi*
Other:
Other:
Promax Store
System
(default is Myson Premier)
Towel Rail
Manufacturer
Towel Rail Type
Chrome
White
Curved
TRV Valves
Controls Manufacturer
Heating to all properties will have 2 zones according to current regulations (except bedsits)
unless stated here:
Please note: If shower details are not given a flow rate of 12 l/m will be assumed in accordance with
BS EN 806
* When sizing combi boiler we will assume ensuite(s) to have an electric shower, unless
otherwise stated in the special notes section below.
3. System data
Please tick preferences below
Table 5 – System Data
System Details
Heating System Design
System Type
Pipe work Type
Connection size to radiators
Pipe work drops
Pipe work orientation (flats)
Underfloor Heating (if applicable)*
Please indicate preference:
Sealed
Open-vented
Manifold
2 Pipe system
Copper
Plastic
10mm
15mm
Behind dry liner
Surface mounted
Celing void
Ducted in screed
Ground Floor
Whole house
*Underfloor heating control by others
Note: If an external water point is desired please indicate the preferred location on drawing.
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4. Special building allowance
Examples:
 Allowance made for internal wall, knock out panels.
 Life time homes.
 Grey Water Recycling
 DDA compliant
Please detail any special notes and requirements:
5. General Information
Completion date after receiving full and final design request form, will be approx 4 weeks plus.
Quantity and position of radiators will be designed in accordance with BS 5449: 1990, and best
practice. Where radiators are indicated on developers drawing these will be adhered to where
practicable.
Radiators must not be positioned behind doors as this affects the heat distribution to the room in
question. This may cause the indemnity to become invalid for this room.
Room thermostat(s) position needs to be suitably located.
We do not indicate G3 discharge point on our drawings.
We reserve the right to charge for revision work in the event of building layout changes, design
parameter changes or alterations to positions of heating system components.
Designs are indicative only.
Very minor alterations may not be undertaken
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6. Alternative Technologies
HeatSaver
 The Multifit HeatSaver is a package including a Multifit GasSaver and a 50 litre temporal store,
designed for installation with a Baxi or Potterton HE combi boiler. Where high flow rates are
not required in smaller properties, this package delivers SAP benfits up to 8% using SAP
2009.
 The Multifit HeatSaver Advance package includes a 40kW Baxi Duo-tec Combi boiler, a Multifit
GasSaver and a 50 litre temporal store. This package offers flow rates of 18l/min capable of
satisfying multi bathroom properties. This matches the hot water performance of a system
boiler with a 200 litre unvented cylinder, while using 25% less gas, also delivering SAP
benefits.
GasSaver
 The Multifit GasSaver is an innovative product that sits neatly between a boiler and flue and
recycles the heat from the flue gases which would normally be expelled into the atmosphere
and wasted.
It has been proven by independent testing to achieve domestic hot water savings of up to 7% and can
reduce the gas used to heat hot water by up to 37% annually and a SAP benefit of approx. 5%.
Solar Hot Water
 There may be occasions, were the cylinder cupboard, may not be large enough to
accommodate the solar cylinder as well as the solar pump station, expansion vessels, etc. The
pump station and expansion vessels can be repositioned to the roof space, in order to free up
space in the cylinder cupboard.
 Consideration must be given to the position of the solar panel / tubes.
 Unless a suitable drawing is submitted in AutoCAD format. A drawing register will be used to
specify panel(s) orientation.
Biomass boiler (Pellet or log type).
 Position of the biomass boiler must be considered, due to their physical size.
 Allowance must be made, for storage of either pellets or logs, dependent on boiler installed.
 Allowance must be made, for floor space, for buffer tank(s) 600 litre ( 900mm diameter x
1670mm high ), or 800 litre ( 990 mm diameter x 1700mm high ).
 Boiler back end protection, this is a requirement for our Baxi biomass boilers. The use of our
thermostatic pump blending valve is a must.
 Boiler flues by others.
Ecogen boiler
 Only approved engineers are allowed to install the Ecogen micro CHP boiler.
 Due to the weight Ecogen boiler will need to be fitted on to a suitably supported wall.
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