Moen F9900 Instruction sheet

How to Install an Air Gap

What is an Air Gap?

An Air Gap prevents the backflow of

contaminated discharged water into

the clean water supply. The use of

an Air Gap is required by plumbing

codes for certain kitchen fixtures for

example a dishwasher or Reverse

Osmosis system.

Moen recommends installing an Air

Gap in two installation scenarios:

• A Standard kitchen, Filtration

faucet, and a Moen Four-

Stage Reverse Osmosis System

• A Moen 3-in-1 Water Filtration

Pulldown faucet with a Moen

Four-Stage Reverse Osmosis

System

The instructions below will detail how

to install Moen's 105895 Air Gap.

105895

• Required Sink Hole

Size: 1 1/2"

• Deck

Thickness: Max 1 1/

F9900

The Air Gap:

https://solutions.moen.com/Article_Library/How_to_Install_an_Air_Gap

Updated: Wed, 13 Dec 2023 21:55:43 GMT

Parts Legend:

1. Cap

2. Escutcheon

3. Top

Mounting

Nut

4. Body

5. Bottom

Mounting

Nut

6. Outlet

7. Inlet

Installing the Air Gap:

1. Disassemble the Air Gap: Unthread the cap (1),

the escutcheon (2), and the top mounting nut

(3).

2. From under the sink: Slide the body (4) up

through the hole in the deck.

3. From above the sink: Thread the top mounting

nut (3) onto the body (4), leaving about 1/4"

(6mm) of the threads above the sink. Under the

sink, tighten the bottom mounting nut (5).

4. Thread the escutcheon (2) and cap (1) over the

top of the body (4).

Connecting the Air Gap:

Parts Legend from Four- Stage Reverse Osmosis System-INS12980:

A- Manifold

B- Sediment Filter

C- Pre-Carbon Filter

D- Reverse Osmosis Filter

E- Post Carbon Filter

F-Manifold Screws

G- Tank Elbow

H- Cold Water Tee

I-1/4" Black Inlet Tube

J- 1/4" Blue Air Gap Tube

K- 3/8" Blue Air Gap Tube

L- 3/8" White Tank Tube

M- 3/8" Gray Outlet Tube

N-Sealant Tape

O- Saddle Screws and Nut

P- Foam Seal

Q- Drain Saddle

R- Tank

https://solutions.moen.com/Article_Library/How_to_Install_an_Air_Gap

Updated: Wed, 13 Dec 2023 21:55:43 GMT

Installing the Saddle:

1. Punch out the center hole on the Foam Seal (P)

and use it as a template to locate the drilling

position above the sink trap. Mark the location with

a pencil.

2. At the pencil mark location, drill a 1/4" (32mm) hole

through the wall of the drain pipe. Note: Do not

drill through both sides of the pipe.

3. Align the holes on the plate of the Drain Saddle and

the Foam Seal (P). Remove the film from the Foam

Seal (P), and attach it to the inside of the plate of

the Drain Saddle.

4. Aligning with the drip hole, position the Saddle (Q)

on the drain tailpiece and securely using the

Screws and Nuts (O) provided.

https://solutions.moen.com/Article_Library/How_to_Install_an_Air_Gap

Updated: Wed, 13 Dec 2023 21:55:43 GMT

Installing the 3/8" Blue Air Gap Tube (K):

•The Blue Air Gap Tube (K)may be cut for a

taut path to the connector.

•The tube should not drop below 45° from a

vertical position.

•Be careful to not kink the hose

1. Slide the 3/8" Blue Air Gap Tube (K) over the Air

Gap Outlet (6) and secure with it a hose clamp

(sold separately).

2. Route the other end of the 3/8" Blue Air Gap Tube

(K) from the Air Gap Outlet (6) to the connector on

the Saddle (Q).

3. Insert the end of the 3/8" Blue Air Gap Tube (K)

into the connector on the Saddle (Q) approximately

1" (25mm) until it stops.

Installing 1/4" Blue Air Gap Tube (J):

1. Press the elbow retaining ring towards the elbow

and pull on the cap to remove the red cap from the

elbow of the Reverse Osmosis Filter (D).

2. Insert the Flow Restrictor and tube assembly

included with the Reverse Osmosis Filter (D) into

the 1/4" Blue Tube (J) so that the red collar seats

against the tube and leaves 1/8" of the thin, clear

tubing exposed.

3. Insert the end of 1/4" Blue Air Gap Tube (J) with

Flow Restrictor into the Elbow until it stops

(approximately 3/4"). Next slide the other end of 1/

4" Blue Tube (J) over the Air Gap Inlet (7) and it

secure with a hose clamp (sold separately). Verify

that the connections are secure.

Flow Restrictor:

https://solutions.moen.com/Article_Library/How_to_Install_an_Air_Gap

Updated: Wed, 13 Dec 2023 21:55:43 GMT

For additional information on Moen products visit solutions.moen.com and select the type of product you are repairing.

The guide will contain repair details, troubleshooting and specific information on assembling handles associated with

that style of product.

Still Not Finding What You're Looking For?

Non US? Moen Canada | Other International Sites

https://solutions.moen.com/Article_Library/How_to_Install_an_Air_Gap

Updated: Wed, 13 Dec 2023 21:55:43 GMT

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