8
| STERO SD3 DOOR-TYPE DISHWASHER
INSTALLATION
(continued)
Without Electric Booster Water Heater
The water supply line is connected to the line strainer (top rear, Figure 1) with
3
⁄
4
inch or
1
⁄
2
inch pipe. A manual
shutoff valve and pipe union are required (customer supplied).
REQUIRED INCOMING WATER TEMPERATURE
Model
Sanitizing Mode
Connection
Water Supply
Minimum
Maximum
Recommended
Without Built-in Booster
Hot Water Sanitizing
Hot Water
180°F
(82°C)
194°F
(90°C)
180°F
(82°C)
Without Built-in Booster
Chemical Sanitizing
Hot Water
120°F
(49°C)
N/A
140°F
(60°C)
With Built-in Booster
Hot Water Sanitizing
Hot Water
110°F
(43°C)
N/A
140°F
(60°C)
For the SD3 model, proper dishwasher operation requires a flowing pressure of 20 ± 5 psig at the dishwasher.
If the flowing pressure exceeds 25 psig, a pressure reducing valve (customer supplied) must be installed in the
water supply line. A pressure gauge (Figure 1) is provided (not installed) for verification of proper water pres-
sure. The water pressure is monitored when the solenoid valve is open and water is flowing.
The water pressure regulator must have a relief by-pass. Failure to use the proper type of pressure
regulator may result in damage to the unit.
With Electric Booster Water Heater
The water supply line is connected below the booster with the line strainer (supplied) and
3
⁄
4
" pipe. A manual
shut-off valve and pipe union are required (not supplied).
The water supply must have a minimum temperature of 110°F (43°C), and a flowing pressure of 20 ± 5 psig at
the pressure gauge on top of the machine. If the flowing pressure exceeds 25 psig, a pressure reducing valve
(not supplied) must be installed in the water supply line.
Incoming water temperature below 110°F (43°C) may require longer wash cycle time than the 57 second cycle;
refer to OPERATION, pages 15 – 16.
When the fill / final rinse valve is on, water from the booster tank enters the dishwasher through the final rinse
arms. During the rinse cycle, this water is 180°F (82°C). A small amount of water will likely dribble out of the
lower rinse arm into the tank between cycles due to the natural expansion of water as it is being heated.
