Alliance Laundry Systems HF150 - Manual (Page 26)

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The machine is delivered with hoses with 3/4" connections. These hoses fit the water
inlet valves of the machine and the main water inlet taps. All the inlet valves have to be
connected. To ensure the optimal functioning of the water inlet valves, the water pressure
on the inlet should be between 3 and 5 bar (40 and 80 psi). If the pressure is too low, the
cycle time will increase considerably.
In case of boiler fed machines, a minimum of hot water of 90°C - 194°F should be
available per unit. (See Table 1)
MODEL
Min Contents Boiler
METRIC
US
For the HF150, IHF150, IHF033, CHF150, CHF033 110 l. 3.88 ft³
For the HF185, IHF185, IHF045, CHF185, CHF045 130 l. 4.59 ft³
For the HF234, IHF234, IHF055, CHF234, CHF055 150 l. 5.30 ft³
For the HF304, IHF304, IHF075, CHF304, CHF075 180 l. 6.36 ft³
MODEL
Inlet flow capacity per minute (Gallons / Liters)
INTERNATIONAL US
For the HF150, 185 4.23 / 16 5.28 / 20
For the HF234, 304 7.93 + 13.2 / 30 + 50 7.93 + 13.2 / 30 + 50
Water connection
 The diameter of the main drain should be adapted to the water flow and the number of
machines. It should be sufficient to handle at least 80 l/min - 21.13 gal./min (HF150-
185) and 160 l/min - 42.26 gal./min (HF234-304) per machine.
 It is necessary to connect the main drain at least on one side to an open air-brake to
allow ventilation.
The machine is equipped with a drain valve with 2" outer diameter (50 mm) for HF150-
185 and with 3" outer diameter (80 mm) for HF234-304. This drain valve should be
connected to the drain by means of the drain elbow which is delivered with the machine.
Water drain
Table 1
Table 2
To comply with the WRAS water regulations: an 'approved' single check valve or
some other no less effective backflow prevention device shall be fitted at the point of
connection(s) between the supply and the fitting (IRN R150).