American Dish HT-25 Installation Manual

American Dish Service

INSTALLATION INSTRUCTIONS

Model HT-25, HT-34

208v/240v, Single-phase, 90amps (dual 60a/30a), Neutral

High Temp Dishmachine

Listed by UL #E68594, NSF/ANSI 3, ASSE 1004 #933, Mass. License P3-0111-306

If you have questions, call 800-922-2178 or visit our website at www.AmericanDish.com

The electrical power supplied to this machine is an imminent hazard that could result in severe bodily injury or death if not properly installed or hooked up correctly. When working in the control box or on electrical parts, always disconnect power and tag-out before servicing. Replace cover to control box and other protective covers when ﬁ nished servicing this equipment.

READ Manufacturer’s Manual before Using this Product. For your safety read and observe all cautions shown throughout these instructions. While performing installations described in this booklet, wear approved Personal Protective Equipment, including Safety Eye-Wear.

There are potentially hazardous situations when working with industrial cleaning chemicals for dishmachines. See chemical manufacturer’s MSDS sheets and safe practices for handling and installing chemical feeders and supply containers.

#1 Before you begin: American Dish Service provides this information as a service to our customers. Keep all instructions for future reference. ADS reserves the right to alter or update this information at any time. Should you desire to make sure that you have the most up-to-date information, we would direct you to the appropriate document on our web site:

www.americandish.com. Set out below are the speciﬁ cations and requirements that you must use

and follow to properly install the type or types of equipment listed above. It is your obligation as the customer to ensure that the machine is installed safely and properly, and when completed, the machine is left in proper and safe working order. Electrical, Plumbing, and Chemical hookup should be performed by a qualiﬁ ed professional who will ensure that the equipment is installed in accordance with all applicable Codes, Ordinances, and Safety requirements. Failure to follow the installation instructions could void the warranty. ADS assumes no liability or control over the installation of the equipment. Product failure due to improper installation is not covered under the ADS Warranty.

#2 This equipment is considered a heavy use item. It is not rated for outdoor use.

#3 Do not install spray arms until machine is ﬂ ushed with water. When this machine is connected to power, it will normally ﬁ ll with water and complete one cycle. Do this without the spray arms. Dump that water out before installing spray arms. Draining the water will ﬂ ush installation debris from the tank and pump; this prevents damage to spray arm bearings. To drain, pull the pump ﬁ lter out of the sump.

#4 Important—Dishmachines must be installed to allow for servicing of motor and plumbing. Do not install chemical dispensers on the top of the control box or machine.

#5 WATER HEATERS or boilers must provide the minimum temperature of 120°F required by the machine listed above, which has a minimum demand of 47.2 gallons per hour. These speciﬁ cations are for the dishmachine only, which typically accounts for 70% of a restaurant’s hot water demand.

For HOT WATER SANITIZING, an additional booster heater must be installed to reach 180°F minimum for the ﬁ nal rinse. This booster will require a rise of 70° for 47.2 gallons per hour.

#6 INSPECT FOR DAMAGE—If you receive a damaged dishmachine, do not sign “Clear” but write “Damaged” on the documents.

ELECTRICAL SECTION

The electrical power supplied to this machine is an imminent hazard that could result in severe bodily injury or death if not properly installed or hooked up correctly.

Before powering up the machine, CHECK ALL ELECTRICAL SCREW TERMINALS in the control box on top of the machine and the heater box. Screws can loosen in transit. Loose connections on high amp load terminals will cause wire burning and component damage during operation and will not be covered under ADS warranty. The term “Clean Circuit” means the electrical circuit breaker supplies no other devices, motors, machines, or lights.

Showing HT-25, single-phase control box Main distribution blocks for two incoming circuits,

30/60a

HT-25/34 208/240v, Single-phase 90a, (dual circuits of 60a & 30a plus Neutral)

IT IS RECOMMENDED THAT THIS EQUIPMENT BE INSTALLED USING NEW CIRCUIT BREAKERS.

ORDERING INSTRUCTIONS—Machines with heaters are voltage speciﬁ c, order according to the actual voltage available at the installation (see kW chart in the Appendix).

Motor contactor, heater contactor, fuse block, heater breaker

Cam timer with 3 ﬁ xed operational cams, 2 adjustable

FIRST CIRCUIT—The power supply of 208 volts, single-phase, for the 30-amp connection must consist of two 10-gauge wires for L1, L2, one Neutral and one suitable green ground wire. The 30-amp breaker or fuses must be a clean circuit to the machine. This circuit is for the motor and control circuit. Attach the 10-gauge wires to terminals marked L1, L2, Neu, and GND on the upper 4-terminal main distribution block in the control box.

SECOND CIRCUIT—This second circuit is for the tank sustainer heater, which uses the 60-amp circuit. The 60-amp breaker or fuses must be a clean circuit to the machine. Attach a minimum of 6-gauge wires to terminals marked L1, L2 on the lower 2-terminal main distribution block in the control box, then tighten all wires. ADS has provided two 1”conduit holes (1 3/8”actual size) for each electrical service in the back of the control box. This model has 120v control circuit and components.

FOR 240 VOLT— If power is 240v, see kW rating chart at the back of the manual for correct heater sizing and available ADS heater elements. Specifying the correct voltage should be done at the time of ordering.

EXCEPTIONS—HT-25/34 with booster combo is NOT AVAILABLE in single-phase, this model will use a stand-alone booster with its own electrical service for a minimum of 12 kW single-phase, requiring 90amps on 208v.

PLUMBING SECTION

#1 TANKLESS WATER HEATERS can be problematic for commercial dishmachines. The ADS model HT-25 dishmachine require heated water 47.2 gallons per hour at 20 psi as measured at the ﬁ nal rinse manifold, with a minimum temperature of 120°F. It has been the experience of ADS that tankless supply systems require multiple units plumbed in sequence with a recirculation loop to achieve proper pressure and temperature.

Check with the tankless water heater manufacturer, they may recommend a storage tank to guarantee proper ﬂ ow and line pressure to the machine. Failure to provide adequate water quantity, pressure and temperature to the machine will cause the machine to function improperly and is not the responsibility of ADS. Improperly installing ADS equipment in this manner could void the warranty. All costs associated with providing an adequate water supply to the machine is the sole responsibility of the user.

#2 DRAIN SIZE—Gravity drain lines are 2” pipe size. Do not use reducing adapters for drain lines, always use same diameter pipe or larger. Close pump petcocks if equipped.

#3 A PRESSURE REDUCING valve with by-pass should be installed before the booster heater if the line pressure is 50 psi or above. This is according to booster manufacturer’s instructions.

ELECTRICAL SHOCK HAZARD on bare electrical terminals in the thermostat box or control box.

BURN HAZARD from hot water from pumped sprays or plumbing leaks.

#6 HOODS—Follow all local plumbing and mechanical codes. IMC 2012, section 507.2.2 requires Type II hoods for all commercial dishwashers except where the heat and moisture loads are incorporated into the building’s HVAC systems or dishwashing equipment designed with separate heat and moisture removal systems. A door-type, single-rack, hot-water sanitizing dishwasher is rated at 4770 Btu/h by table 5E, ASHRAE Research Project #1362, 8/5/2008. ADS DOES NOT SPECIFY BUILDING HVAC VALUES.

Showing ﬁ nal rinse mixing chamber, hot-water inlet to HT-25

Data plate information and listing marks

Hot Water Sanitizer Connection

Flush the building’s water lines before connecting to the dishmachine to avoid fouling the inlet water solenoid. For high temp sanitizing this inlet water line must come from a stand-alone booster heater. Connect ¾” MPT water supply line to a 12kW booster and a ½” MPT line to the top of the dishmachine inlet manifold when using a stand-alone booster. The requirement at the dishmachine is 180°F minimum at 20 PSI during ﬁ nal rinse, with a demand of 47.2 GPH. The pressure is measured at the pressure gauge mounted next to the pressure reducing valve in the inlet plumbing on top of the machine’s hood. To adjust pressure, turn adjustment screw atop the valve counter-clockwise to decrease pressure.

Showing PRV, ASSE approved air-gap, ﬁ nal rinse gauge

+ 9 hidden pages

American Dish HT-25 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual