Hep20 Technical Handbook

Index
A
Acoustic 44
Access to pipes and joints 68, 74
Adaptors
Female BSP to Hep 2 O ® (socket type) 23
Female BSP to Hep 2 O ® (spigot type) 24
Hep 2 O ® to imperial copper 14, 46
Male BSP to Hep 2 O ® (socket type) 23
Male BSP to Hep 2 O ® (spigot type) 23
Tap connector BSP to Hep 2 O ® 24
Additives
Antifreeze 82
Anti-corrosion 83
Advisory service 96
Alterations to pipes and fittings 52
Ancillary items for products 32-35
Appearance 3
Appliance valves 27
Approvals 81
Auxiliary fittings 23-31
B
Ball valve 26
Bend 135º 16
Bending radius 42
Benefits of Hep 2 O ® 8
Bent tap connector
Demountable 18
SlimLine 22
Blanking peg 34
Blanking plug 22
Biological 44
Bonding – electrical 45
Branch and one end reduced tee
Demountable 17
SlimLine 21
Branch reduced tee
Demountable 17
SlimLine 21
Branch reduced tee – spigot 17
British Standards 81, 96
Building Regulations 81
C
Cabling Hep 2 O ® pipework through joists 64
Calculations for pipe sizing 60
Central heating layout (domestic) 71
Central heating & water services calculator 39, 59
Central heating pipe sizing 59, 60, 63
Chlorine 44, 91
Clipping distances for pipes 66
Cold forming bend fixture 38
Cold water pipe sizing 59, 60, 61
Comparative quantities for Hep 2 O ® and copper 72
Compatibility with other materials
(see Connection of Hep 2 O ® )
Concealed Hep 2 O ® pipe locations 69
(see also Exposed Hep 2 O ® pipe locations)
Conductivity – heat 43
Conduit system 36, 37, 74, 75, 76, 77
Conical tap connector washer 33
Connection of Hep 2 O ®
adjacent to capillary joints 47
to appliances 49
to boilers 51
to brass spigots 47
to chrome plated copper or stainless steel pipes 47
to compression fittings 47
to copper pipes
metric 46
imperial 46
to cylinders 70
to draw-off taps 49
to Hepworth Acorn system 47
to incoming service pipes 48
to plastic pipes 47
to pumps and valves 50
to radiators and storage vessels 50
to steel pipes and threaded bosses 49
Construction types and water distribution 71-80
Copper and Hep 2 O ® compared 3, 72, 73
Copper pipe cut end protector 35, 46
Corrosion
Chemical effects 44
Inhibitors 83
Cut lengths of pipe 13
(see also Straight coils of pipe)
Cutting pipes 6
Cycling – thermal 41
Cylinder connector 25, 50
Cylinder cupboard layouts 70
D
Demountable fittings 14-18
Design considerations
Introduction 53
Systems planning 54-70
Construction types and water distribution 71-80
Regulations and guidance 81
Dismantling a joint (Demountable fittings) 52
Domestic central heating layout 71
Domestic plumbing layouts
Direct and sealed 55
Direct and sealed using combination boiler 56
Indirect and vented 54
Domestic timber floors and Hep 2 O ® 64, 71-73
Double-check valve 28
Double spigot reducer 15, 59
Draincock 24
Drilling holes through timber joists 65
96