Underfloor Heating One Large Zone Quote – Water Underfloor Heating
F.A.O: Sir/Madam
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12th October 2009
Quote Reference: 100777/09 “One Zone – 30 sqm”
Dear Sir/Madam,
Thank you for giving us the opportunity to quote for the underfloor heating system for your project. Our system should be very simple and easy to understand. Our aim is to use the highest quality products on the market. We have also made sure that we use the best quality pipe on the market – this is the multilayer pipe made of RiX/AL/RiX. The pipe is 100 % oxygen diffusion tight, therefore offers total protection against oxygen entering the heating system. The pipe is approved for 10 bar pressure and 95 degree C temperature – one of the highest settings available. Your system will never need the above settings, but it indicates the strength of the pipe. The manifolds are made to very high quality.
Our instructions will explain all the technical issues. We offer free unlimited technical backup. Our room thermostat is a stylish digital Danfoss TP5000 Si programmable thermostat (2 core + earth) with set-back.
Our estimate is based on the information made available to us. For more technical and product information please visit our website www.underfloorheatingsystems.co.uk . You can also download the full Installation Instructions Large Single Room from;
http://www.underfloorheatingsystems.co.uk/underfloor_heating_tech_downloads.php
We look forward to hear from you in the near future and in the meantime we wish you all the best with your project.
Yours sincerely,
Registered in England, Company Number 4549443 - VAT Reg. No.813 5042 64
QUOTATION FOR UNDERFLOOR HEATING SYSTEM
Project: One Zone – 30 sqm
Reference: 100777/09 Date: 12/10/2009
Areas to Be Heated:
Complete Project: Approximate 30 m2 – Please check that floor area is correct
Note, that the quote is based on the above floor area(s). If you require less or more area(s) to be heated please get in contact with us, so we can give you a re-quote. Please also check that the area is correct especially if the drawings were faxed/e-mailed to us and no measurements were provided.
Manifold Position(s):
Complete Project: Located Centrally (Two required)
Floor Constructions:
Complete Project: Concrete Floor
Installation Price (optional): £ 1,400.00 Installation would be completed by one of our Installation Partners.
Installation price includes: laying the pipe to the insulation, mounting manifold(s), control pack(s) and wiring centre(s) to the wall, filling the system and pressure testing the pipework. It does NOT include electrical work or connecting to the boiler. Polyurethane insulation must be laid before our installation team arrives. If you have a timber suspended floor the joists will need to be notched for the pipe runs (by customer) and a 25 mm air gap left above insulation. Kitchen units and baths etc must also be clearly marked out before our installers(s) arrive. Note, there are many options for installing underfloor heating in timber suspended floors, contact us for more information.
Notes:
1) The control pack(s) include 6 m Grundfos pump and a RWC high flow mixing valve. These components are all necessary for the underfloor heating system to work. Small flats that use combi boilers will not necessarily need the control pack(s). Note, concrete floors normally will need 45 degree C water flow temperature and timber suspended floors will need 55 degree C water flow temperature. If you are using a heat pump, please make sure that the heat pump company specify a pump that can cope with the underfloor heating duty as you do not need our control packs with heat pumps. Also, note that the heat pump should be supplied with a buffer tank.
2) We have included a modern Danfoss TP5000 Si digital programmable room thermostat timer. This acts as both a room thermostat and a timer for the underfloor heating. The system quoted for is for One Zone only.
Boiler Capacity and Specification
Recommended Boiler Capacity for the underfloor heating is 30 kW or 100,000 BTU/hr. This is the maximum heat output that can be achieved from the underfloor heating system.
Maximum heat output for underfloor heating systems are 100 W/m2 for concrete floors and 70 W/m2 for timber suspended floors. For any underfloor heating system to work efficiently the property needs to be built to current building regulations and no rooms should loose more than above output. Carpet and underlay together should not exceed 2.5 Tog.
Condensing boilers are very efficient with underfloor heating. When using combination boilers you must check with the manufacturer if the boiler can be fitted with a secondary pump.
Underfloor heating systems can be mixed with conventional radiator systems. Please note that the underfloor heating system needs to be a complete separate system , i.e. the flow and return for the underfloor heating needs to go all the way back to the boiler, normal control is by 2 port valves, like a normal S-Plan system.
Advise on Insulation and Floor Constructions
We recommend a minimum of 50 mm of Polyurethane insulation for the underfloor heating system. This is very high quality insulation and can be used for both concrete and timber suspended floor constructions. No plastic sheets should be laid on top of the pipes. All insulation requirements should apply to current building regulations.
Note, we do not supply the insulation. Any builder’s merchant will have e.g. Kingspan or Celotex insulation in stock. The quote is based on clipping the pipe direct to the insulation board. We do supply pipe clips. Use a minimum of 65 mm of screed on top of the insulation for concrete floors, for timber suspended floors see website.
Moisture Contents in the Screed and Floorboards
The screed must be allowed to dry for a minimum of 4 to 6 weeks before the heating is operated. As the system is used for the first time, the mixing valve must be set to minimum setting to let the moisture in the screed to dry out. The temperature should be increased by two degrees every day until the mixing valve is set at 45°C. Floorboards must have moisture content lower than 7 % before they are installed. We do not recommend floorboards thicker than 25 mm, see website link under technical for more information about floorboards. Always check with the manufacturers of any floor finish that it will work with underfloor heating.
Heating in WC and Bathrooms
As these areas are very small, extra heat might be needed. Therefore it is standard practice to install towel rails in these areas, combined with the underfloor heating.
Installation & Technical Helpline
The underfloor heating system can be installed by yourselves. Training can be provided. If you want to use Underfloor Heating Systems Ltd for the installation please contact our technical department.
For any technical queries please do not hesitate to contact our technical department.
Cost of Underfloor Heating System (supply only)
Total Net Price: £ 3,490.00 + VAT (Includes Delivery)
The price includes;
· Multilayer pipe 16 x 2 mm – RiX/AL/RiX.
· High quality Manifold with flow regulators, on/off valves, filling valves, air bleed valves and ball valves.
· Control Pack for mixing the water temperature to the underfloor heating system with 6 m
Grundfos pump and a Highflow RWC mixing valve.
· Danfoss TP5000Si programmable digital individual room thermostat with set-back.
· Clips for fitting the pipe to the insulation.
· Pipe fittings for connecting to the manifolds.
· Calibration tool
· Pipe cutter.
Approvals
The multilayer pipe has massive range of approvals from all over the world, including WRAS, KIWA and DVGW. The pipe is approved for 10 bar and 95 degree C.
Guarantee
As the multilayer pipe is of very high quality, the pipe is guaranteed to work for in excess of 50 years with a 10 year company insurance backed guarantee.
Payment and Deliveries
Payment is with order. The quote includes delivery charges. Please allow 1 to 3 days for delivery for the materials. The goods remain the property of Underfloor Heating Systems Ltd until paid in full. We keep the right not to deliver any goods until full payment has been made. We accept all major credit/debit cards.
For the customer
Please note that the value of our quotation is based upon the supply of pack quantities of our product. If the value of this quotation is accepted then it is on the understanding that goods will only be accepted for return if they are faulty. As this quote is based on information supplied by the customer to us, no guarantee of performance is given or implied by Underfloor Heating Systems Limited, although where applicable the manufacturers system guarantee shall be effective. For concrete floors we will guarantee that you get 100 W/sqm and for Timber Suspended floors 70 W/sqm. A house built under current building regulations needs approximate 50 to 60 W/sqm. System is designed to work with a UK design inside temperature at 21 degree C.
Your system has been carefully designed using the products shown. The manufacturer warrants the system but if you choose any products other than our own, or fewer products than have been quoted, then this warranty is invalid. The quote is valid for 6 months but can normally be extended.
