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Water Supply Requirements
Water supply requirements:
Valved hot and cold water supply with a water pressure
■
between 14.5 and 116 PSI (100–800 kPa). Water pressure
between 43 and 73 PSI (300–500 kPa) is recommended.
A hot water heater or boiler supplying an adequate
■
amount of water between 120–160°F (49–80°C). The water
temperature within the washer is controlled to a maximum
temperature that is set in the program. The amount of hot
water required to wash a load of laundry is dependent on
many factors, including the hot and cold water temperature
and the wash program selected. Average amounts of hot
water required to wash one load of laundry are shown in
the table below.
Hot water requirement per load
Washer Model
MFS18
MFS25
MFS35
MFS55
* Approximate values. Assumes 140°F (60°C) hot water supply and
70°F (21°C) cold water supply.
It is also necessary to connect all available water inlets to a
■
water supply. If three inlets are present, then two should be
cold water—one a hard water supply, and the other a soft
water supply. If a hard and soft connection is not available,
connect to whatever cold water supply is available.
Drain Requirements
The washer has a 3" (75 mm) water drain on its rear side. A
molded drain hose that extends up to 43" (1.09 m)and hose
clamp are supplied with the washer. To maintain washer
performance, do not reduce the diameter of the drain pipe.
The washer drain may drain into a waste channel or directly
to a drain.
The waste channel cannot be located under the washer.
■
There should be at least 4" (100 mm) between the back
of the washer and the middle of the waste channel (see
illustration).
The waste channel must be lower than the drain pipe.
■
There should be at least a 3/4" (20 mm) air gap between
the bottom of the drain and the water level in the channel.
Minimum Waste Channel Measurements
MFS18
MFS25
X
2.9"
(73 mm)
(73 mm)
Hot water per load*
4.0 gal. (15 L)
4.5 gal. (16 L)
8.0 gal. (31 L)
10.5 gal. (40 L)
4"
3/4"
(102 mm)
(19 mm)
MFS35
2.9"
2.2"
(55 mm)
The drain pipe must be able to handle wastewater from all
of the washers, so the diameter of the drain pipe required is
dependent on the number of washers in the line. Sanitary drains
must be vented and meet all local and municipal codes. The
suggested drain diameter for one to three washers is shown
in the illustration below.
PN Models
Physical and electrical control connections for external liquid
laundry product pumps are included in all PN models. If laundry
product dispenser pumps will be used, the pumps should have
an adequate flow rate to deliver the required amount of product
to the dispenser within 30 seconds. Relay supply voltage was set
at the factory. Check your material list for supply voltage.
PD Models
It is also possible to connect external liquid laundry product
pumps to PD model washers, but the following additional
installation steps are required:
It is necessary to complete the physical connection between
■
the tubing connector not supplied with PDs, and the
dispenser.
The electrical control connection to the liquid product pumps
■
is made on the control board.
See page 9, "Laundry Product Supply Pump Connection" for
additional information.
X
MFS55
5.5"
(140 mm)
3"
(102 mm)
(76 mm)
Drain Diameter Requirements
Laundry Product Dispenser Pumps
5"
4"
(127 mm)
Flow
7
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