JennAir 27" & 30" Electric Built-In Convection Microwave Oven Installation Instructions

Important Information

Save for local electrical inspector's use.

This document provides installation instructions for JennAir 27-inch and 30-inch electric built-in convection microwave ovens.

Built-In Microwave Oven Safety

Your safety and the safety of others are very important. Always read and obey all safety messages.

⚠️ This is the safety alert symbol. It alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word "DANGER" or "WARNING."

DANGER: You can be killed or seriously injured if you don't immediately follow instructions.

WARNING: You can be killed or seriously injured if you don't follow instructions.

Safety messages will tell you the potential hazard, how to reduce the chance of injury, and what can happen if instructions are not followed.

Installation Requirements

Tools and Parts

Gather the required tools and parts before starting installation. Read and follow the instructions provided with any tools listed here.

Tools Needed:

• Phillips screwdriver
• Flat-blade screwdriver
• Measuring tape
• Level
• Drill (for wall cabinet installations)
• 1/8" (3 mm) drill bit (for wall cabinet installations)
• 1" (2.5 cm) drill bit (for wall cabinet installations)

Parts Needed:

• UL listed or CSA approved conduit connector
• UL listed wire connectors

Parts Needed - Flush Installation:

• W10801485 Stainless steel flush installation kit for 27" (68.6 cm) models
• W10801486 Stainless steel flush installation kit for 30" (76.2 cm) models
• W10801487 Black flush installation kit for 30" (76.2 cm) models

To order, see the "Assistance or Service" section of the Use and Care Guide.

Parts Supplied:

A. Spacer bars (2)

B. Bottom vent (1)

C. 3/8" (9.5 mm) hex-head washer screws (4)

D. 3/4" (1.9 cm) pan-head screws (4)

Location Requirements

Observe all governing codes and ordinances.

• Cabinet opening dimensions must be used. Given dimensions provide minimum clearance with microwave oven.
• Recessed installation area must provide complete enclosure around the recessed portion of the microwave oven.
• Grounded electrical supply is required. See "Electrical Requirements" section.
• Electrical supply junction box should be located 3" (7.6 cm) maximum below the support surface. A 1" (2.5 cm) minimum diameter hole should be drilled in the left rear corner of the support surface to pass the appliance cable through to the junction box.
• For installation above a single built-in oven, the junction box must be located inside the upper cabinet.
• If the junction box is on the rear wall behind the microwave oven, it must be recessed and located in the upper or lower right or left corner of the cabinet.
• Microwave oven support surface must be solid, level, and flush with the bottom of the cabinet cutout. The floor must support a weight of 108 lbs (49.0 kg).

To avoid damage to your cabinets, check with your builder or cabinet supplier to make sure that the materials used will not discolor, delaminate, or sustain other damage. This oven complies with the maximum allowable wood cabinet temperatures of 194°F (90°C).

Product Dimensions

27" (68.6 cm) and 30" (76.2 cm) Microwave Ovens

Diagram showing overall dimensions:

• 27" (68.6 cm) models:
• A. 253/8" (64.5 cm)
• B. 173/8" (44.1 cm)
• C. 2211/16" (57.7 cm)
• D. 263/4" (68.0 cm) overall width
• E. 197/8" (50.3 cm) overall height
• F. JMC2427IM: 259/16" (64.9 cm)
• F. JMC2427IL: 243/4" (62.9 cm)
• 30" (76.2 cm) models:
• A. 283/8" (72.1 cm)
• B. 173/8" (44.1 cm)
• C. 2211/16" (57.7 cm)
• D. 293/4" (75.6 cm) overall width
• E. 197/8" (50.3 cm) overall height
• F. JMC2430IM: 259/16" (64.9 cm)
• F. JMC2430IL: 243/4" (62.9 cm)

27" (68.6 cm) and 30" (76.2 cm) Microwave Oven Spacer Kit

Diagram showing spacer kit dimensions:

• 27" (68.6 cm) models: A. 263/4" (67.9 cm) overall width
• 30" (76.2 cm) models: A. 293/4" (75.6 cm) overall width

NOTE: The microwave oven spacer kit allows installation in a 173/8" to 173/4" (44.1 to 45.1 cm) maximum cutout height.

Cabinet Dimensions

27" (68.6 cm) and 30" (76.2 cm) Microwave Ovens

Diagram showing cabinet cutouts and clearances:

• 27" (68.6 cm) models:
• A. 27" (68.6 cm) min. cabinet width
• B. 197/8" (50.3 cm) from bottom of cutout to bottom of upper cabinet door
• C. 40" (101.6 cm) bottom of cutout to floor (recommended)
• D. 251/2" (64.8 cm) cutout width
• E. 11/2" (3.8 cm) min. bottom of cutout to top of cabinet door
• F. 175/8" (44.7 cm) recommended cutout height (fits 173/8" [44.1 cm] to 173/4" [45.1 cm])
• G. 217/8" (55.5 cm) min. cutout depth
• 30" (76.2 cm) models:
• A. 30" (76.2 cm) min. cabinet width
• B. 197/8" (50.3 cm) from bottom of cutout to bottom of upper cabinet door
• C. 40" (101.6 cm) bottom of cutout to floor (recommended)
• D. 281/2" (72.4 cm) cutout width
• E. 11/2" (3.8 cm) min. bottom of cutout to top of cabinet door
• F. 175/8" (44.7 cm) recommended cutout height (fits 173/8" [44.1 cm] to 173/4" [45.1 cm])
• G. 217/8" (55.5 cm) min. cutout depth

Installation Above Single Built-In Oven

Diagram showing clearances:

• Top clearance: 2 3/16" (5.5 cm)
• Side clearance: 1" (2.5 cm) from top of oven

Approved Models: JJW2430, JJW2427, JMW2427, JJW3430

Electrical Requirements

GROUNDING INSTRUCTIONS

For a permanently connected microwave oven:

The microwave oven must be connected to a grounded, metallic, permanent wiring system, or an equipment grounding conductor should be run with the circuit conductors and connected to the equipment grounding terminal or lead on the microwave oven.

SAVE THESE INSTRUCTIONS

If codes permit and a separate ground wire is used, it is recommended that a qualified electrical installer determine that the ground path and wire gauge are in accordance with local codes.

Check with a qualified electrical installer if you are not sure the oven is properly grounded.

This oven must be connected to a grounded metal, permanent wiring system.

Ensure the electrical connection and wire size are adequate and in conformance with the National Electrical Code (ANSI/NFPA 70), CSA Standards (C22.1-94, C22.2 No. O-M91), and all local codes and ordinances.

Copies of code standards can be obtained from:

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471

CSA International, 8501 East Pleasant Valley Road, Cleveland, OH 44131-5575

Electrical Connection

To properly install your microwave oven, determine the type of electrical connection you will be using and follow the instructions.

The microwave oven must be connected to the proper electrical voltage and frequency as specified on the model/serial/rating plate, located underneath the control panel along the oven vent.

The microwave oven (rated 120/240 V, 20 A) has 4 wires (L1, L2, N, and G) in the flex conduit and should be connected to a 20 A maximum-rated circuit, overcurrent protected on both L1 and L2 circuits. A time-delay fuse or circuit breaker is recommended.

Flexible cable from the microwave oven should be connected directly to the junction box. Do not cut the conduit.

A UL listed or CSA approved conduit connector must be provided.

If the house has aluminum wiring, use special connectors and/or tools designed and UL listed for joining copper to aluminum. Follow the manufacturer's recommended procedure.

Power Requirements Table:

Installation Instructions

Spacer Kit Installation

The spacer kit allows installation in a 177/16" to 177/8" (44.1 cm to 45.3 cm) maximum cutout height.

• If cabinet cutout height is more than 177/16" (44.1 cm), install the spacer kit. Proceed to "Assemble Spacer Kit."
• If cabinet cutout height is less than 177/16" (44.1 cm), you do not need to install the spacer kit. Proceed to "Prepare Built-In Microwave Oven."

Assemble Spacer Kit

1. Attach the bottom vent to spacer bars using four 3/8" (9.5 mm) hex-head washer screws. NOTE: Spacer bar flanges should face out.

Diagram: A. Bottom vent, B. Spacer bar flange, C. Spacer bars, D. 3/8" (9.5 mm) hex-head washer screws

Install Spacer Kit

1. Center the assembled spacer kit against the lower front edge of the cabinet cutout.

2. Using an 1/8" (3.2 mm) drill bit, drill pilot holes through the mounting holes in the spacer bars.

3. Attach the assembled spacer kit to the cabinet using four 3/4" (1.9 cm) flat-head screws. Do not overtighten.

Diagram: A. 3/4" (1.9 cm) flat-head screws, B. Spacer kit assembly

Prepare Built-In Microwave Oven

1. Locate existing wiring to avoid drilling into or severing it.

⚠️ Excessive Weight Hazard

Use two or more people to move and install the microwave oven. Failure to do so can result in back or other injury.

2. To avoid floor damage, place the microwave oven onto cardboard before installation. Do not use the handle or front frame for lifting.

3. Remove shipping materials and tape.

4. Remove and set aside racks and other items from inside the oven.

5. Remove the hardware package from the literature bag.

6. Move the microwave oven and cardboard close to the final installation location.

Make Electrical Connection

⚠️ Electrical Shock Hazard

Disconnect power before servicing. Use 12 gauge copper wire. Electrically ground oven. Failure to follow these instructions can result in death, fire, or electrical shock.

The microwave oven has a neutral (white) power supply wire and a cabinet-connected green (or bare) ground wire.

1. Disconnect power.

2. Feed the flexible conduit from the microwave oven through the cabinet opening.

3. Remove junction box cover if present.

4. Install a UL listed or CSA approved conduit connector to the junction box.

Diagram: A. UL listed or CSA approved conduit connector

5. Route the flexible conduit from the microwave oven to the junction box through a UL listed or CSA approved conduit connector.

6. Tighten screws on the conduit connector.

7. Complete electrical connection.

3-Wire Cable with Ground from Home Power Supply to Microwave Oven Cable with 4 Wires

Diagram showing wire connections:

• A. Cable from home power supply
• B. Green (or bare) wires
• C. White wires
• D. 4-wire cable from microwave oven
• E. UL listed or CSA approved conduit connector
• F. Red wires
• G. Black wires
• H. UL listed wire connector
• I. Junction box

1. Connect the 2 black wires (G) together using a UL listed wire connector.

2. Connect the 2 white wires (C) using a UL listed wire connector.

3. Connect the 2 red wires (F) together using a UL listed wire connector.

4. Connect the 2 green (or bare) wires (B) together using a UL listed wire connector.

5. Install junction box cover.

Install Microwave Oven

1. Using 2 or more people, lift the microwave oven partially into the cabinet cutout. If a spacer kit was installed, lift the oven over it and position it between the guide strips.

Diagram: A. Spacer bar flange, B. Spacer bar, C. Microwave oven

2. Push against the front frame of the microwave oven to insert it into the cabinet. Push completely and center in the cutout. NOTE: Open the door and push against the seal area of the front frame. Do not push against outside edges.

3. Using an 1/8" (3.2 mm) drill bit, predrill pilot holes through the mounting rails on each side of the oven.

4. Securely fasten the oven to the cabinet using two 3/4" (1.9 cm) flat-head screws provided. Insert screws through mounting rail holes. Do not overtighten.

Diagram: A. Mounting rail, B. Flat-head screws

5. Reinstall convection grid, turntable, and support hub.

6. Reconnect power.

7. The display panel will light briefly, and the clock should appear.

8. If the display panel does not light, refer to "Assistance or Service" in the Use and Care Guide or contact the dealer.

Complete Installation

1. Verify all parts are installed. If an extra part remains, review steps to find the skipped one.

2. Verify all tools are present.

3. Dispose of/recycle all packaging materials.

4. For oven use and cleaning, read the Use and Care Guide.

Check Operation of Microwave Oven

1. Fill a microwave-safe container with 1 cup (250 mL) of water and place it on the turntable. Close door firmly.

2. Touch COOK.

3. Set power level, temperature, and cook time to "2:00" minutes.

4. Press START.

If microwave oven does not operate, check:

• Household fuse is intact or circuit breaker has not tripped.
• Electrical supply is connected.
• See "Troubleshooting" section in the Use and Care Guide.

When the display reads "1:00" minute, open the oven door. Cooking should stop. Close door firmly. The interior light should turn off.

5. Touch START to resume a preset cycle. The oven should begin cooking, and the interior light should be ON.

Let the oven complete cooking time. Tones will sound at the end, and the oven will shut off.

6. Open the oven door and slowly remove the container. The water should be hot.

7. For clock and other functions, refer to the Use and Care Guide.

Assistance or Service

Please reference the "Assistance or Service" section of the Use and Care Guide or contact the dealer from whom you purchased your built-in microwave oven.