K
kay-jay
The height of the cwsc above the cylinder is irrelevant to the head of water (pressure) available at the taps as it just runs through it.
The head at the taps is determined by the height of the cwsc, or in this case the water level in the combination cylinder, above them.
A combination tank will not give any less pressure at the taps than a separate tank and cylinder. The higher you lift it the better the head of water so it is worth doing.
Think of it like this.
A cwsc fitted in the loft of a 3 story building, 3m ceilings, and the hot water cylinder fitted on the floor of the ground floor and a shower head on the top floor.
Discounting pressure drop due to resistance, the pressure on the bottom of the hwc would be just under a bar. The pressure at the hot tap on the ground floor perhaps about 0.85 bar, the pressure at the shower head would be around 0.1 bar.
Same scenario with a combination cylinder in the loft, The pressure at the bottom of the cylinder would be around 0.08 bar, pressure at the hot tap on the ground floor is the same 0.85 bar and same 0.1bar at the shower head.
Same pressure at the outlets.
Thanks tamz makes sense, was thrown at first cos its contrary to what i was taught.
Sent from my GT-I9100 using Tapatalk