31
3.2.4 Step 3 - Connect Feed Water Supply
A feed water supply with a minimum flow of 14 litres (3.7 gallons) (28 litres (7.4 gallons) for XL) per minute at
a pressure of 2 bar (29 psi) should be connected to the 1/2” BSP female threaded connection of the filling
hose.
If installing the PureFlo Ag+ or PureFlo UV (in-line) system option, it should be positioned as close to the
Evaporative Module inlet as possible. It is advisable to mount the PureFlo Ag+ or PureFlo UV (in-line) outside
the AHU for ease of access.
Typically, 15mm interconnecting copper pipework will be used.
Not suitable for external mounting or freez-
ing conditions.
Feed Water Supply Connections - A feedwater supply with a minimum flow of 14 litres (31lb) per minute as a
pressure of 2 bar (29 psi) should be connected to the Evaporative Module via the float valve.
NOTE:
A double
check valve (not
supplied) must be
installed on the
water inlet.
28mm Drain
Connection
42mm Overflow
Connection
Air Flow
Sediment
Silver
Caution:
Where water quality exceeds 60ppm (ie. value is lower than 60), stainless steel pipework
should be used.
Flow
PureFlo Ag+ Assembly
(Optional)
15mm
Compression
Fitting
PureFlo UV
(Optional)
Drain Connection - The Evaporative Module drain and overflow should be connected to the main building
drain. The drain must be trapped to prevent back siphonage. 50 mm (2”) upstands must be fitted to improve
gravity drain as shown in the picture above.
1/2” Ball Valve
Содержание HE2
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