I'm renovating a property which after works are complete will be 5 beds, 4 bathrooms.
All 4 bathrooms will have rain head showers and one will also have a bath.
Incoming CW supply is in 25mm MDPE to internal stopcock and then 15mm to CW outlets. Pressure is 3.5bar & flow rate just over 20l p/m.
Boiler is 32kW system boiler in basement with vented HW cylinder (also in basement) approx 5m pipe run away from boiler. Tanks in loft 2 floors up.
Pressure is currently good for showers etc in current config of 2 bathrooms (2 showers, 1 bath). I doubt though if the gravity fed HW will be sufficient with the addition of 3 bathrooms.
To upgrade I'm looking at unvented cylinder options but need to understand what the pipe size requirements are for the 1st fix on the outlet side of the cylinder. Will 15mm be sufficient from the cylinder with current pressure to ALL outlets or should I run dedicated for bath/showers in 15/22mm?
All 4 bathrooms will have rain head showers and one will also have a bath.
Incoming CW supply is in 25mm MDPE to internal stopcock and then 15mm to CW outlets. Pressure is 3.5bar & flow rate just over 20l p/m.
Boiler is 32kW system boiler in basement with vented HW cylinder (also in basement) approx 5m pipe run away from boiler. Tanks in loft 2 floors up.
Pressure is currently good for showers etc in current config of 2 bathrooms (2 showers, 1 bath). I doubt though if the gravity fed HW will be sufficient with the addition of 3 bathrooms.
To upgrade I'm looking at unvented cylinder options but need to understand what the pipe size requirements are for the 1st fix on the outlet side of the cylinder. Will 15mm be sufficient from the cylinder with current pressure to ALL outlets or should I run dedicated for bath/showers in 15/22mm?
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