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Фрагмент инструкции
Adequate clearances for air openings into the combustion chamber must be provided. Make sure there is an adequate supply of make-up air in the room to allow for combustion of the gas at the burner(s). Keep the appliance area free and clear from all combustible substances. Do not obstruct the flow of combustion and ventilation air. The dishwasher must have a minimum clearance from combustible construction of 3" at the rear and 0" at the sides. A clearance of 40" must be provided at the front and 20" at each end of the dishwasher for servicing and proper operation. The burner is ignited automatically by solid-state electronic circuitry; there is no pilot light. Gas flow is regulated by the temperature control circuit. – 12 – VENTING REQUIREMENTS Type II Canopy Hood VENTING REQUIREMENTS Type II Canopy Hood Venting can be provided by either the pant-leg duct connections (Fig. 8) or by a vent hood over the whole machine (Fig. 6). The Hobart C-Line dishwasher equipped for gas tank heat is not provided with a flue collar and is not intended to have the flue directly connected to a ventilation system. However, the products of combustion must be vented to the outside air. A vent hood over the entire dishwasher (Fig. 6) can be employed to vent both the moist air from the dishwashing chamber and the flue gases from the gas heater. The volume of flue exhaust required for venting moist air and flue gases using a single vent hood over the entire dishwasher must be calculated using the formula in the Perimeter Calculation Formulaon page 16. Type I or Type II canopy hoods are recommended. A factory-built commercial exhaust hood may be listed as conforming to Underwriters Laboratory's standard 710 titled, Exhaust Hoods for Commercial Cooking Equipment. Hoods must be installed according to the manufacturer's instructions. Makeup air must be provided so that the exhaust flow rate results in a positive building pressure in the room where the unit is located (more outside air than exhaust air). Factory-built hoods not tested to UL standard 710 and custom built hoods must comply with the following specifications: Stainless steel 0.037" [No. 20 Gage] minimum thickness or copper sheet weighing at least 24 ounces per square foot; the hood must be secured in place by noncombustible supports and must meet the RATE OF EXHAUST FLOW CALCULATIONS. TYPE II CANOPY HOOD Fig. 6 – 13 – PANT-LEG VENT CONNECTIONS (Figs. 7, 8) PANT-LEG VENT CONNECTIONS (Figs. 7, 8) Moist air escapes from each end of the conveyor type dishwasher. The exhaust requirements recommended are a maximum of 200 CFM at the entrance end of the dishwasher and a maximum of 400 CFM at the discharge end. Optional vent hoods or extended hoods may be provided at each end of the machine. Sufficient make-up air must be provided so the exhaust flow results in a positive building pressure in the room in which the unit is located (more outside air than exhaust air). Hoods are provided wit...
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