Thermador PRG304 - User Manual

The provided manual describes the Thermador Professional Ranges, which are free-standing cooking appliances available in both all-gas and dual-fuel configurations. These ranges are designed for residential use and come in various models, including PRG304, PRG36, PRG48 (all-gas), and PRDS304, PRDS36, PRDS48 (dual-fuel).

Function Description:

These ranges serve as primary cooking appliances, offering multiple cooking zones and oven capabilities.

All-Gas Models (PRG series):
- PRG304: Features four sealed gas surface burners, a large capacity gas oven with a gas infra-red broiler, and a convection system.
- PRG364GD, PRG364GL, PRG366: Offer a gas cooking surface with either four sealed burners and a griddle, four sealed burners and a grill, or six sealed burners. These models also include a large capacity gas oven with a gas infra-red broiler.
- PRG484GG, PRG486GD, PRG486GL: Feature a gas cooking surface with four sealed burners, griddle and grill; six sealed burners and a griddle; or six sealed burners and a grill. PRG48 ranges include a large gas oven (same as PRG36) and a small gas oven with broil capability.
Dual-Fuel Models (PRDS series):
- PRDS304: Equipped with four sealed gas surface burners and an electric convection, self-cleaning oven with broil capability.
- PRDS364GD, PRDS364GL, PRDS366: Offer the same cooking surface configurations as their all-gas counterparts but are equipped with a professional-size electric convection, self-cleaning oven with broil capability.
- PRDS484GG, PRDS486GD, PRDS486GL: Feature a gas cooking surface with four sealed burners, griddle and grill; six sealed burners and a griddle; or six sealed burners and a grill. PRDS48 ranges include a large electric oven (same as PRDS36) and a small electric oven with a bread proofing feature and broil capability.

Important Technical Specifications:

Gas Supply:
- Natural Gas: 6 inch water column (14.9mb) minimum, 8 inch (20mb) nominal. Manifold Pressure: 5 inch water column (12.5 mb).
- Propane Gas: 11 inch water column (27.4 mb) minimum, 14 inch (37mb) maximum. Manifold Pressure: 10 inch water column (24.9 mb).
- Inlet Connection: 1/2" N.P.T. (Minimum 5/8" dia. flex line).
- A manual gas shut-off valve must be installed externally in an accessible location.
- The range is supplied with its own pressure regulator. For propane gas, the tank must also have a high-pressure regulator.
Electrical Power Supply:
- PRG304, PRG36, PRG48 (All-Gas): 120 VAC, 60 Hz., 1Ph., 20 Amp circuit. These models are factory equipped with a three-prong grounding plug and must be plugged into a matching, grounding-type, 120 VAC receptacle. Improper polarization can cause malfunction and shock hazard.
- PRDS304 (Dual-Fuel): 120/240 VAC, 50/60 Hz., 1Ph., 20 Amp circuit.
- PRDS36 (Dual-Fuel): 120/240 VAC, 50/60 Hz., 1Ph., 35 Amp circuit.
- PRDS48 (Dual-Fuel): 120/240 VAC, 50/60 Hz., 1Ph., 50 Amp circuit.
- Dual-fuel models can be cord-connected (3-pole, 3-conductor or 3-pole, 4-conductor range supply cord kit) or hard-wired. A neutral supply wire is required for dual-fuel models.
- Conductor Size (AWG) for PRDS models:
  - PRDS304/PRDS36: L1, L2 - 10; NEUT - 12; GROUND - 10.
  - PRDS48: L1, L2 - 8; NEUT - 10; GROUND - 8.
- Minimum voltage rating: 300 VAC. Temperature rating: 105°C.
Dimensions & Clearances:
- Minimum range height (leveling legs fully retracted): 35-3/8". Maximum range height (leveling legs fully extended): 36-3/4".
- Minimum 30" to 36" (or 42" if hood contains combustible materials) from bottom of overhead hood to cooking surface.
- Maximum 13" cabinet depth for overhead cabinets.
- Minimum 12" horizontal clearance to combustible side wall material.
- Backguards are required if horizontal clearance to combustible material behind the range is less than 12". Standard 9" backguards are shipped with 30" models; others must be ordered separately (Low Back Guard, High Shelf, or Island Trim).
- Doorway width required (unit assembled): 28-7/8" (30" range), 30-7/8" (36" & 48" ranges).
- Doorway width required (oven door(s) removed): 27-3/4" (30" range), 29-1/2" (36" & 48" ranges).
Weight (approximate shipping weight):
- 30" Range: 335 lbs (shipping), 285 lbs (without packing), 215 lbs (after removing door(s), caps, panel, racks).
- 36" Range: 444 lbs (shipping), 390 lbs (without packing), 295 lbs (after removing door(s), caps, panel, racks).
- 48" Range: 584 lbs (shipping), 524 lbs (without packing), 395 lbs (after removing door(s), caps, panel, racks).

Usage Features:

Sealed Gas Surface Burners: Provide efficient cooking. The two far left sealed burners feature XLO® (ExtraLow®) setting, causing the flame to cycle on and off for very low heat.
Griddle/Grill Options: Available on select models for versatile cooking.
Convection Oven: Electric convection ovens on dual-fuel models offer self-cleaning capability. Gas ovens on all-gas models include a gas infra-red broiler and convection.
Bread Proofing Feature: Available in the small electric oven of PRDS48 models.
Adjustable Leveling Legs: Allow for precise leveling of the range.
Griddle Level Adjustments: Screws in the back ledge allow for leveling or slight forward tilting of the griddle.
Anti-Tip Device: Essential safety feature to prevent accidental tipping, must be installed according to instructions.
Ventilation: Strongly recommended to install a suitable overhead vent hood. Downdraft ventilation is not recommended. Hood width should at least equal the range width for wall installations, and overhang by 6" on both sides for island installations. Hood lower edge should be 30"-36" above the cooking surface (42" if combustible materials are present in the hood). Make-up air is recommended due to high ventilation volume.
Flame Characteristics: Burner flames should be blue and stable with no yellow tips, excessive noise, or lifting. Sealed top burner flames should be 1" to 1-1/4" high. Griddle, grill, and gas oven flames have specific height requirements (e.g., Griddle: 3/4"-1" for propane, Grill: 1/2" for propane, Gas oven: 1-1/2"-3" for propane).
Infra-Red Broiler: Gas oven infra-red broiler burner has no adjustable air shutter. For propane gas, an air shutter is attached but not adjustable. It requires a 45-minute burn-in to eliminate insulation binder odor before first use.

Maintenance Features:

Exterior Surfaces: Stainless steel surfaces can be cleaned with a damp soapy cloth, rinsed with clear water, and dried with a soft cloth. Mild glass cleaner can remove fingerprints and smears.
Discolorations/Deposits: For persistent issues, refer to the Care and Use Manual.
Stainless Steel Protection: Use a cleaner/polish like Stainless Steel Magic®.
Avoid Harsh Cleaners: Do not use ordinary steel wool, steel brushes, salt solutions, disinfectants, bleaches, or cleaning compounds on stainless steel, as they can cause rust or harm the surface.
Burner Maintenance: Check air shutter (grill, griddle, gas oven only) or burner ports for blockages if flame is yellow or unstable.
Self-Cleaning Oven: Available on dual-fuel models.
Electrical Wiring Diagrams: Located in the toe kick area for service technicians.