CTP7-20G

Overview

The Alto-Shaam CTP7-20G is a gas-fired Combitherm CT PROformance combi oven/steamer. It is described in product listings as boiler-free and countertop, with CoolTouch controls. Its cooking capacity is listed as eight full-size 18" x 26" sheet pans or sixteen 12" x 20" pans. That format suits kitchens cooking a mix of full-size sheet-pan items and smaller-pan batches.

The supplied Combitherm operator manual includes the CTP7-20G in its model list and provides recipe guidance for bakery items, convenience foods, seafood, meats, poultry, vegetables and other dishes. The CTP7-20G is the gas model; confirm the required fuel and electrical configuration from the unit’s nameplate before arranging a connection.

Key Features

• Boiler-free combi cooking: Product listings describe the unit as a gas combi oven/steamer with a boiler-free configuration.
• Pan capacity: Holds eight 18" x 26" full-size sheet pans or sixteen 12" x 20" pans, as listed for this model.
• Fuel choices: Product information lists natural gas and liquid propane.
• Controls: The product listing identifies CoolTouch controls.
• Cleaning options in the manual: The CT PROformance operator manual describes automatic liquid cleaning with five selectable levels. Confirm the cleaning system fitted to a particular unit before ordering cleaning supplies or planning a cycle.

Specifications

• Brand: Alto-Shaam.
• Model: CTP7-20G.
• Equipment type: Combitherm combi oven/steamer.
• Fuel: Natural gas or liquid propane, as listed in product information.
• Configuration: Boiler-free, countertop.
• Controls: CoolTouch controls, as stated in the product listing.
• Capacity: Eight 18" x 26" full-size sheet pans, or sixteen 12" x 20" pans.
• Width: 43.75".
• Depth: 46.19" in one listing; another gives 46.18".
• Height: 37.81" in one listing; another gives 37.8".
• Weight: Seller listings conflict, reporting 680 lb and 720 lb. Confirm the unit’s shipping or installed weight from its specific documentation.
• Voltage: Product information lists 120 V, 208–240 V and 380–415 V. A separate listing describes a 120 V, 60 Hz, single-phase unit; verify the electrical configuration on the nameplate.
• List price record: One supplied listing shows $31,956. The source does not identify the currency or establish a current selling price.

Installation & Requirements

Use the nameplate on the specific CTP7-20G to verify its fuel and electrical requirements. The supplied product information lists natural gas or liquid propane and voltage options of 120 V, 208–240 V and 380–415 V. The supplied service-manual troubleshooting information for PROformance and Classic gas ovens gives a static gas-pressure range of 5.5 to 14 inches water column. It specifies dynamic pressure of 5.5 to 14 inches water column for natural gas and 9 to 14 inches water column for liquefied petroleum gas. These figures are service-manual test ranges; have gas pressure and connections assessed by a qualified technician.

The manual also identifies a connected water supply as necessary for functions covered in its cleaning and troubleshooting instructions, and cautions operators to ensure water is turned on for an automatic liquid-cleaning cycle. The sources do not provide a CTP7-20G clearance specification or a required ventilation arrangement, so no clearance or ventilation dimensions are stated here.

If gas is smelled, the service manual instructs operators to shut off the gas supply, avoid lighting appliances or touching electrical elements, extinguish open flames and evacuate the area. It directs them to contact the gas supplier from outside the property, or the fire department if the supplier cannot be reached.

Operation

The operator manual’s recipe guidance shows the range of work covered by this Combitherm series: baking items such as rolls, cookies and pastries; cooking convenience foods; preparing fish and seafood; roasting or cooking meats and poultry; and cooking or roasting vegetables. Listed examples include proofing, roasting chicken, cooking salmon, baking bread, and steaming vegetables. The tables provide example cooking settings and times, but actual results depend on the load and recipe; follow the manual and applicable food-safety procedures.

The service manual advises preheating before cooking and documents time-based and probe-based cooking procedures for the CTC control section. Because that section is labelled for CTC rather than CTP operation, confirm the control-specific steps against the CTP7-20G operator information rather than assuming the CTC button sequence applies to this model.

Cleaning & Maintenance

The operator manual makes thorough cleaning important: accumulated grease or food residue can catch fire, and failure to clean properly can invalidate the warranty described in that manual. Use only authorized Combitherm oven cleaner; the manual warns that unauthorized cleaners may discolor or harm the interior. Wear rubber gloves when using CombiClean tablets or spray oven cleaner, and wear protective eyewear when using spray oven cleaner.

For routine care, remove solids from the drain screen to help prevent blockage. Clean the door gasket daily with a hot, soapy cloth, since fats can weaken the gasket. The manual recommends leaving the door slightly open at the end of the production day to relieve pressure on the gasket, and routinely cleaning the door hinges. Clean the probe and its cable, prongs and holder between loads and at the end of the production shift: wipe with warm detergent solution, remove detergent with clean rinse water, sanitize with an alcohol pad or food-contact-surface sanitizer, and allow the parts to air dry. Wipe the probe with an alcohol pad before inserting it into another food product.

The manual calls for monthly oven decalcification or descaling. Its stated procedure uses 7 ounces of Scale Free cleaner in the drain, followed by a heavy-duty cleaning cycle. After that cycle, it instructs the operator to rinse the interior with the hand shower, open the fan guard and rinse behind the panel, flush the interior drain cover, and run a rinse cleaning cycle. The manual separately warns not to steam-clean, hose down, flood, or use a water jet on the oven interior or exterior. Follow the model manual’s specified procedure and precautions.

For automatic liquid cleaning, the manual lists five levels: Rinse (20 minutes), Light (30 minutes), Normal (1 hour 20 minutes), Heavy-duty (2 hours 6 minutes), and Heavy-duty PLUS (3 hours 30 minutes). It says to ensure the water is turned on and enough liquid cleaner is available. Before the cycle, remove the optional grill grate and wash it separately in hot, soapy water; remove the smoker tray; and clear solid waste from the drain screen and oven interior. The manual says side racks and shelves may remain in the oven. For tablet cleaning, it instructs operators to place tablets in the drain and reinstall the drain screen; tablets left on the drain cover or oven bottom may not dissolve correctly.

The manual’s weekly maintenance instructions for gas models call for inspection of the heat exchanger for grease, carbon or scale buildup and deformation, and inspection of the flue-pipe seal. Its general cleaning precautions also warn against flooding the appliance with water or cleaning it with a water jet.

Troubleshooting

The service manual’s gas-system troubleshooting begins by checking static and dynamic gas pressure and verifying that supply voltage matches the model nameplate. For the gas pressure test, it says to leave the manometer connected while troubleshooting. If dynamic gas pressure falls below the stated minimum, the manual identifies the gas supply as an issue to correct before proceeding with further diagnostics.

For a gas oven that does not combust on a call for heat, the manual’s diagnostic sequence includes checking hot-surface ignitor resistance at room temperature; it gives a specified acceptable range of 30 to 60 ohms. It also covers checking conversion-board and ignition-module voltage, gas-valve operation, flame-sensor current, and the condition of the flame sensor. These are service procedures involving gas and electrical components, not routine operator adjustments.

If the oven smells of gas, follow the emergency actions in Installation & Requirements. For cleaning-system problems, the service manual’s diagnostic flow checks whether the cleaning pump is energized and running, whether cleaning water reaches the pump and manifold, and whether water reaches the injection pipe. It directs the technician to check for a disconnected condensate-pan clean-out hose, a non-operating cooling-water solenoid, obstructed hoses or an obstructed injection pipe as applicable.

Applications

The manual’s recipe examples make the CTP7-20G relevant to commercial kitchens producing baked goods, roasted meats and poultry, fish and seafood, vegetables, eggs, rice, pasta and convenience foods. Its listed full-size and smaller-pan capacities can support different batch and menu formats. Consult the manual for recipe-specific settings and procedures, and verify pan fit and the unit’s actual configuration before purchase.