Hep20 Technical Handbook

Hep 2
O ® Specification Clauses
Project Location.....................................
Drawing References.................................
Main Contract Preliminaries.................................
(Insert as appropriate)
General System Performance
Requirements
1. Cold water installation..............................
2. Hot water installation.................................
3. Low temperature hot water space heating
installation (exposed heat emitters)............................
4. Underfloor heating installation
Shall be Hep 2 O ® UFH Manifold System.
(Brief descriptions of installations 1 to 4 where appropriate)
Associated general building work
(Refurbishment and/or direct plumbing contract)
For example: form openings, chases, duct casings, etc
where appropriate.
Associated electrical work
EITHER
(Use the following clause when electrical work is carried
out by a separate contractor)
•
Electrical work in connection with the plumbing
installation is to be in accordance with electrical
specification and carried out by the electrical engineer.
OR
(Use the following clause when electrical work is specific
to the plumbing contract only)
•
Electrical work to be included as part of the plumbing
contractor’s work, and carried out in accordance with
BS 7671 “ Requirements for Electrical Installations”
- The IEE Wiring Regulations.
Design of installations
EITHER
(Use the following clauses where contractor designs
installation. Also delete* as required)
•
The (Main)* (Plumbing)* Contractor is to be
responsible for the design and installation of the
Hep 2 O ® systems (1 to 4 below as appropriate) in
accordance with Hepworth Building Products
instructions, all relevant statutory requirements,
standards or codes of practice.
1. Pipeline sizes shall:
a) Meet anticipated simultaneous water demand for
the building type
b) Provide a water velocity of 2 m/s for cold water,
1.3 m/s for hot water
c) Provide a minimum discharge rate at each draw-off
point (refer to schedule taken from BS 6700)
d) Ensure a cold water storage cistern filling time of
not more than.......hour(s).
2. Hot water storage system shall ensure the:
a) Storage capacity is sufficient for the building type
b) Primary heat source is capable of raising the water
temperature from 10ºC to 60ºC in 1 hour
c) Temperature of stored hot water is 60ºC to 65ºC.
3. Low temperature hot water space heating system
shall ensure:
a) Exposed heat emitters maintain the required room
temperatures
b) Surface temperature of heat emitters is not
greater than.....ºC.
4. Hep 2 O ® UFH Manifold System shall be installed in
accordance with Hepworth Plumbing Products’
recommendations.
OR
(Use the following clauses where the plumbing
contractor is not to design the plumbing system)
•
Pipe sizes to be installed as shown on the drawings
and performance schedules/tables.
•
The cold water stoage cistern filling time in houses
up to three bedrooms shall not exceed one hour.
Hep 2 O ® Pipes and Fittings
Pipes for cold and hot water
• Shall be Hep 2 O® Standard Straight Coiled Pipe,
Code.......... and/or
• Shall be Hep 2 O® Standard Cut Length, Code..........
Pipes for central heating
• Shall be Hep 2 O® Barrier Straight Coiled Pipe,
Code.......... and/or
• Shall be Hep 2 O® Barrier Cut Length, Code..........
Conduited pipes for central heating
• Shall be Hep 2 O® Barrier Straight Coiled Pipe,
Code.......... and/or
• Shall be Hep 2 O® Barrier Cut Length, Code..........
• Shall be Hep 2 O® Conduit System comprising:
Conduit Pipe, Code.........
Conduit Junction Box and Lid, Code.........
and if required
Terminal Back Plate, Code HX103
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