Salamander RP55PS - Cold Water Supplies and Storage

13
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Helpful guidelines
Cold water supplies and storage
Recovery of cold storage
The typical recovery rate of a 1⁄2 inch high
pressure part II BS1212 ball valve is:
100 kPa (15PSI/1.0 bar) 0.97 galls/min 4.41 l/min
200 kPa (30PSI/2.0 bar) 1.34 galls/min 6.11 l/min
270 kPa (40PSI/2.7 bar) 1.58 galls/min 7.18 l/min
400 kPa (60PSI/4.0 bar) 1.94 galls/min 8.82 l/min
Aeration of pump and cylinder
from a cold water storage tank
This occurs when the incoming cold mains
ball valve is positioned above the cold feeds
to the cylinder and to the pump – aerated
water is drawn into the pump as illustrated.
Figure 20: Aeration
Reposition
cold mains
ball valve
here
Vortex
Outlets
The bottom of
the cold tank
MUST BE
checked and
cleaned of debris
Fig 17 Aeration of pump
OLD STYLE DO NOT USED
Vortex
Reposition
cold mains
ball valve
here
Outlets to
pump
The bottom of the cold
tank MUST be checked
and cleaned of debris
Chronic aeration of the pump occurs when this
problem is combined with inadequate storage
capacity and/or when the volume of water
drawn by the pump and other services exceeds
the refill rate and creates a vortex which draws
air and possibly debris into the pump.
Cold storage usable capacity
The usable capacity of cold storage is easily
calculated as the capacity of water in the
cold tank above the cold feeds to the
cylinder, the pump and other outlets –
see formula.
Formula for calculation on rectangular
tank:
Depth (15”) x width (23”) x length (36”)
= 12,420 cu inches
Volume cu inches (12,420) x 0.01639
= 203.56 litres
Volume litres (203.56) x 0.22
= 44.78 gallons.
Formula for calculation on circular tank:
Depth (15”) x radius (17”) x radius (17”)
x 3.142 (Pi)
= 13,621 cu inches
Volume cu inches (13,621) x 0.01639
= 223 litres
Volume litres (223) x 0.22
= 49 gallons.
Figure 21
Length
Width
Usable capacity
Depth
of
water
Outlets
The bottom of the cold
tank MUST BE checked
and cleaned of debris
Length
Width
Usable capacity
Depth
of
water
Outlets
The bottom of the cold
tank MUST be checked
and cleaned of debris
Fig 18 Cold storage
OLD STYLE DO NOT USED
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