I've got 3 questions on water hardness and the building regs:
1. The Domestic Heating Compliance Guide says in Table 9 that if mains water hardness exceeds 200 ppm then provision for treatment should be made. Our water company's website says that our area has a hardness of 150 ppm as calcium and 275 as calcium carbonate. Which of these are the building regs referring to?
2. Presumably 'provision for treatment should be made' means 'provision for treatment must be made'?
3. The only Building Regs Compliance certificate that we have describes the works as 'commission pressure-jet appliance installation'. I would have thought that 'commissioning' just meant final testing/checking out. Or would it also cover things like design (and therefore checking for provision of water softening treatment where required)?
All help gratefully received.
1. The Domestic Heating Compliance Guide says in Table 9 that if mains water hardness exceeds 200 ppm then provision for treatment should be made. Our water company's website says that our area has a hardness of 150 ppm as calcium and 275 as calcium carbonate. Which of these are the building regs referring to?
2. Presumably 'provision for treatment should be made' means 'provision for treatment must be made'?
3. The only Building Regs Compliance certificate that we have describes the works as 'commission pressure-jet appliance installation'. I would have thought that 'commissioning' just meant final testing/checking out. Or would it also cover things like design (and therefore checking for provision of water softening treatment where required)?
All help gratefully received.