Fisher & Paykel MOH30SS1 Installation Guide

OVER THE RANGE MICROWAVE OVEN

MOH0SS1

INSTALLATION GUIDE

CONTENTS

Mounting space 4

Wall construction 4

Hood exhaust duct 5

Tools recommended for installation 6

Ventilation system 7

Oven installation 9

Mounting oven to the wall 10

Check list for operation 11

3

MOUNTING SPACE WALL CONSTRUCTION

or more from floor

Max. 13" (330.2 mm)

Please read all instructions thoroughly before installing the Over-the-range microwave oven.
Two people are recommended to install this product.

If a new electrical outlet is required this must be completed by a qualified electrician
before the Over-the-range microwave oven is installed. See ELECTRICAL GROUNDING
INSTRUCTIONS.

This Over-the-range microwave oven requires a mounting space on a wall as shown in Figure 1.

For proper installation and servicing, a 2 in/51 mm space is necessary between the top of the
range backsplash and the bottom of the Over-the-range microwave oven.

Min. 12" (304.8 mm)

Min. 30"

(762 mm)

16.3"

(414 mm)

At least 2" (50.8 mm)

Backsplash

30" (762 mm)
or more from
cookingsurface

66" (1676.4 mm)

This Over-the-range microwave oven should be mounted against and supported by a flat
vertical wall. The wall must be flat for proper installation. If the wall is not flat, use spacers to
fill in the gaps.

Wall construction should be a minimum of 2 in x 4 in (51 mm x 102 mm) wood studding and

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⁄8 in (10 mm) or more thick dry wall or plaster/lath. The mounting surfaces must be capable
of supporting weight of 110 lb (50 kg)—the oven and contents and the weight of all items
which would normally be stored in the top cabinet above the unit.

The unit should be attached to a minimum of one 2 in x 4 in (51 mm x 102 mm) wall stud.

To find the location of the studs, one of the following methods may be used:
A. Use a stud finder, a magnetic device which locates the nails in the stud.
B. Use a hammer to tap lightly across the mounting surface to find a solid sound. This will

indicate stud location.

The center of the stud can be located by probing the wall with a small nail to find the edges
of the stud and then placing a mark halfway between the edges. The center of any adjacent
studs will normally be 16 in (406.4 mm) or 24 in (610 mm) to either side of this mark.

If the unit is unable to be supported by a stud, toggle bolts and top cabinet screws will need
to be placed, see details in the

WALL TEMPLATE. The top cabinet should be tested to ensure it

is securely attached to the wall. Place extra weight up to 110 lb (50 kg) inside the top cabinet
to test the support.

16" (381 mm) or 24" (9610 mm)

2"x 4"
(51 mm x 102 mm)
wood studs

4

3/8" (10 mm)
dry wall or
plaster/lath

Figure 1

Figure 2

ELECTRICAL GROUNDING INSTRUCTIONS HOOD EXHAUST DUCT

This appliance must be grounded. This oven is equipped with a cord having a grounding wire
with a grounding plug. It must be plugged into a wall receptacle that is properly installed and
grounded in accordance with the National Electrical Code and local codes and ordinances. In
the event of an electrical short circuit, grounding reduces risk of electric shock by providing an
escape wire for the electric current.

WARNING - IMPROPER USE OF THE GROUNDING PLUG CAN RESULT IN A RISK OF ELECTRIC SHOCK.

The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES
CUT OR REMOVE THE GROUNDING PIN FROM THE PLUG.

The Power Supply Cord and plug must be connected to a separate 120 Volt AC, 60 Hz,

13.5 Amp, or branch circuit, single grounded receptacle. The receptacle should be located
inside the cabinet directly above the Over-the-range microwave oven mounting location.

Note:

1. If you have any questions about the grounding or electrical instructions, consult a qualified
electrician or serviceperson.

2. No liability can be accepted for damage to the oven or personal injury resulting from
failure to observe the correct electrical connection procedures.

Ground

Receptacle

When the hood is vented to the outside, a hood exhaust duct is required. All ductwork must
be metal; do not use plastic duct. Check that all connections are secure. Please read the
following carefully:

Exhaust connection

The hood exhaust has been designed to connect to a standard 3 1⁄4 in x 10 in (82.5 mm x 254
mm) rectangular duct. If round duct is required, a rectangular-to-round adapter must be used.

Rear exhaust

If a rear or horizontal exhaust is to be used, care should be taken to align the exhaust with the
space between the studs, or wall should be prepared at the time it is constructed by leaving
enough space between wall studs to accommodate the exhaust.

Maximum duct length

For satisfactory air movement, the total duct length of 3 1⁄4 in x 10 in (82.5 mm x 254 mm)
rectangular or 6 in (152 mm) diameter round duct should not exceed 140 feet (42.67 meters).

Elbows, adapters, wall and roof caps. present additional resistance to air flow and are
equivalent to a section of straight duct which is longer than their actual physical size. When
calculating the total length, add the equivalent lengths of all transitions and adapters plus the
length of all straight duct sections. Figure 4 shows the approximate feet of equivalent length
of some typical ductwork parts.

Use the values in parentheses for calculating air flow resistance equivalent, which should total
less than 140 feet (42.67 meters).

Opening for
Power Cord

Figure 3

90˚ Elbow

(10 ft. / 304.8 cm.)

90˚ Elbow

(25 ft. / 762 cm.)

45˚ Elbow

(5 ft. / 152.4 cm.)

45˚ Elbow

(5 ft. / 152.4 cm.)

Figure 4

Adaptor

(5 ft. / 152.4 cm.)

Wall cap

(40 ft. / 1219.2 cm.)

10˚ Wide elbow

(10 ft. / 304.8 cm.)

Roof cap

(24 ft. / 731.52 cm.)

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TOOLS RECOMMENDED FOR INSTALLATION INSTALLATION HARDWARE

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Phillips screwdriver

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Electric drill

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Scissors

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Pencil

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Tape

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Measure tape

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1 1⁄2 in (38 mm) wood bit or metal hole cutter (if metal cabinet is used)

1

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⁄2 in (12.7 mm), 5⁄8 in (15.8 mm) and 3⁄32 in (2.3 mm) drill bits

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Saw to cut exhaust opening (if needed)

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Protective drop cloth for product and range—you may also use carton for protection

The following is a list of parts you may need for installing your Over-the-range microwave
oven. You will find the installation hardware contained in a packet with the unit. Check to make
sure you have all these parts.

ITEM NAME QUANTITY

1

2

3

4

Lag screws - 1⁄4" x 1.8" (6.3 mm x 45.7 mm) 2

Toggle bolts and nuts - 3⁄16" x 2.7" (4.7 mm x 68.6 mm) 2

Cabinet mounting bolts - 1⁄4" x 3 1⁄8" (6.3 mm x 79 mm) 2

Washer - 3⁄4" (19 mm) 2

5

6

7

1

Nylon grommet (for metal cabinets) 1

Damper 1

Mounting plate 1

2 3 4

5 6

7

Figure 5

6

Blower motor cover

Back of oven

Before : Fan blade openings facing front

Blower motor

VENTILATION SYSTEM

After : Fan blade openings facing rear

Turn the blower motor clockwise 180˚

This Over-the-range microwave oven is designed for adaptation to three types of hood
ventilation systems. Select the type required for your installation.

A. RECIRCULATING - NON-VENTED, DUCTLESS OPERATION

The unit is shipped assembled for recirculating.

Note:

1. The exhaust damper assembly is not required for recirculating operation.

2. The charcoal filter should be replaced every 6 months, depending on use.

3. The charcoal filter is also sold as an accessory. See User Guide for ordering information.

B. HORIZONTAL VENTILATION SYSTEM

Step

1

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Remove the screws (1) and (2) for
opening the blower motor cover and
save screws. Remove cover.
See Figure 6.

Figure 6

Step

2

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Remove the screws (3) for blower
attachment and save screws.
See Figure 7.

Step

3

Figure 9

Figure 10

Parts B

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Turn the blower unit so that the fan
blade openings are facing back (rear of
unit). See Figure 9.

CAUTION:

WIRES TO BLOWER UNIT MUST BE ROUTED
PROPERLY TO AVOID PINCHING WIRES BEFORE
REINSTALLATION OF COVER PLATE.

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Use side cutters or tin snips to cut and
remove parts B from back plate.
Be careful not to distort the plate.
See Figure 10.

Figure 7

Figure 8

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Lift blower unit out of mounting location.
See Figure 8.

CAUTION:

DO NOT PULL OR STRETCH BLOWER WIRING.

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VENTILATION SYSTEM

Fan blade openings facing up

After turning

Step

4

Damper

Figure 11

Figure 12

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Place the blower unit into the opening
and secure it to the oven with the
screws (3) from step 2.
See Figure 11.

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Carefully match the exhaust opening
location of the microwave and attach the
damper to the rear plate by sliding it into
the guides at the rear plate.
See Figures 12, 13.

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Ensure that the damper hinge is on the
top and the damper swings freely into
the wall outlet.

C. VERTICAL VENTILATION SYSTEM

Steps 1 & 2

A-1 Ventilation motor. See Section B, steps 1 and 2 for access to the blower motor. Also see
Figure 8.

Step

3

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Turn the blower unit so that the fan
blade openings are facing upward.
See Figure 14.

Back of oven

Figure 14

Step

4

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Place the blower unit into the opening.
Secure the case blow fan top, the blower
motor and cover to the microwave oven
with the screw (1, 2 and 3) from steps 1
and 2. See Figure 15.

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Figure 13

Figure 15

Figure 16

Figure 17

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Carefully match the exhaust opening
location of the microwave and attach the
damper to blower motor cover by sliding
it into the guides at the blower motor
cover. See Figures 16, 17.

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Ensure that the damper hinge is on the
front and the damper swings free into
the wall outlet.

OVEN INSTALLATION

Power Supply Cord Hole

Mounting Plate

This oven cannot be properly installed without referring to the mounting instructions found on
both templates.

Read and follow mounting information on both

TOP CABINET TEMPLATE and WALL TEMPLATE.

MOUNTING PLATE

Step

1

Step

2

Step

3

House Duct

C

A

Mounting plate

C

C

C

Figure 18

Figure 19

Setup position

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Draw a line down the middle of the studs.
See the Wall Construction, page 4.

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Draw a vertical line on the wall at the
center of the 30 in wide space.

B

See Figure 18.

Note: Use the

WALL TEMPLATE for the rear

wall. Reference WALL TEMPLATE prior to
proceeding. Installation of this product
requires 2 people.

Drilling

Reference the

WALL TEMPLATE.

Tightening the screws

To attach the mounting plate to the wall
using the toggle bolt assemblies and/or lag
screws:

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Insert toggle bolts through the mounting
plate at required locations and add the
spring loaded toggles. See Figure 19.

Ensure you leave space at least the

thickness of the wall between the
mounting plate and the end of the toggle
nut, (in closed position). If you do not
leave this space, the toggle nut will not
open on the other side of the wall.

Space more than
wall thickness

Dry Wall

Figure 20

Figure 21

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Position mounting plate on wall and
insert toggle bolt assemblies through the
drywall holes or start the lag-screw(s)
through the wall stud(s). See Figure 20.

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Secure the mounting plate to the wall by
tightening the toggle bolt assemblies or
lag screw(s). See Figure 21.

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Drill 3⁄16 in (4.7 mm) diameter lag screw
hole(s), into one or more wall studs.

You must have at least one lag screw into

a wall stud. For stud location refer to Wall
Construction.

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Tighten the lag screw(s) into wall stud(s).

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