With Electric Booster Water Heater
The water supply line is connected to the flow control ahead of the line strainer below the booster with 3/4" pipe. A manual shut off valve and pipe union are required.
The water supply should have a minimum temperature of 110°F, and a flowing pressure of 15 – 25 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. CAUTION: The water pressure regulator must have a relief
Incoming water temperature below 110°F may require the wash cycle time to be extended from 40 to 60 seconds. To have the cycle time adjusted, contact your local authorized Hobart Service Office.
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. 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.
GAS TANK HEAT (When Specified) | GAS PRESSURE SPECIFICATION |
Check the gas data plate attached to the dishwasher or the tag attached to the incoming gas piping for the type of gas to be used. Connect the gas supply to the 1/2" NPT gas inlet at the manual gas valve. The burner is not adjustable. The maximum flowing inlet gas pressure must not exceed the Maximum value in the table. If line pressure exceeds the Maximum value in the table, an additional regulator valve (not supplied) must be installed in the supply line.
[ FLOWING GAS PRESSURE — NOT STATIC ]
| Type |
| Inches W.C. (Water Column) | ||
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Model | of | BTU/HR | Incoming Line Pressure | Manifold | |
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AM14 | Natural | 20,000 | 4.5 | 10.5 | 3.2 |
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AM14C |
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Propane | 20,000 | 9.0 | 13.0 | 9.0 | |
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Static inlet line pressure should not exceed 14" W.C. The minimum value is for purpose of input adjustment.
The gas valve (Fig. 3) is provided with a pressure tap to measure the gas pressure downstream, which is also the manifold pressure. Gas supply piping must have a sediment trap (supplied by others) installed ahead of the dishwasher's gas control (Fig. 3).
NOTE: DO NOT use Teflon tape on gas line pipe threads. For gas line pipe connections, use LOCTITE 565, Hobart part 546292, or a flexible sealant suitable for use with Natural and Propane Gases.
The appliance and its gas connections must be leak tested before placing the appliance in operation. Use soapy water for leak test. DO NOT use open flame. The installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1 (latest edition). Copies may be obtained from American Gas Association, Inc., 1515 Wilson Boulevard, Arlington, VA 22209.
Gas Valve
Manual Valve
By Others
Sediment Trap
Fig. 3
The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.45kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.45kPa).
Dissipate test pressure from the gas supply line before
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