Delta Leland Single Lever Pull Down Kitchen Faucet

Models: 978-DST, 978-SD-DST, 9978-DST

Write purchased model number here.

Important Warning

This faucet is not to be used with portable dishwashers!

Standards Met

Meets or exceeds ASME A112.18.1 / CSA B125.1

For Easy Installation

Read all instructions completely before beginning.
Read all warnings, care, and maintenance information.

Backflow Protection System

Your Delta Faucet pull-down spout incorporates a backflow protection system tested to comply with ASME A112.18.3 and ASME A112.18.1 / CSA B125.1. It includes two certified check valves in series, operating independently and integrated as non-serviceable parts of the spray assembly.

Lifetime Faucet and Finish Limited Warranty

Delta faucets are warranted to the original consumer purchaser to be free from defects in material and workmanship for as long as they own their home. Delta recommends professional installation and repair. Delta will replace, free of charge, any part or finish that proves defective under normal installation, use, and service. Replacement parts can be obtained by calling 1-800-345-DELTA (US/Canada) or writing to Delta Faucet Company Product Service (US) or Masco Canada Technical Service Centre (Canada). This warranty covers replacement of defective parts and finishes only. Labor charges and consequential damages are excluded. Proof of purchase is required for warranty claims. This is the exclusive warranty; all other warranties, including implied warranties of merchantability, are excluded. Industrial, commercial, and business usage is covered by a five-year limited warranty. This warranty applies to faucets manufactured after January 1, 1995. Some states/provinces may not allow limitations on incidental or consequential damages. Misuse, abuse, neglect, or use of non-genuine Delta parts will void the warranty. This warranty provides specific legal rights that may vary by location and applies only to faucets installed in the United States, Canada, and Mexico.

Installation Instructions

Spout Installation

Note: Faucets are designed for a maximum countertop thickness of 2 1/4 inches. For stainless steel or thin sinks, use the included RP37490 Stabilization Plate.

1. Shut off water supplies.

2. Thread screws (1) approximately 4 turns into mounting nut (2).

3. Position spout assembly on sink, aligning gasket (3) in the base cavity. For uneven surfaces, use silicone sealant under the gasket.

4. Secure spout with mounting nut (2) and washer (4). Hand-tighten the mounting nut, then tighten screws (1) until snug.

Valve Assembly Installation

1. Slide gasket (1) up over valve assembly tubes and place in base groove (2).

2. Feed tubes down through sink hole, ensuring gasket is properly seated.

3. Place valve assembly (3) in the center of the mounting hole.

4. Secure valve assembly to sink with mounting bracket (4) and nut (5) using the supplied wrench (6).

Hose Installation

A. Insert hose guide (1) into hose end (2). Pass hose (2) up through spout tip (3). Let hose protrude from spout or attach sprayer briefly. Remove hose guide (1). Slide hose weight (4) over hose end (2).

B. Push hose end (1) onto hose (2). Attach clip (3) over hoses as shown. Pull down moderately to ensure connection has been made.

Soap Dispenser Installation

1. Remove nut and gasket (1). Insert body (2) and gasket (3) through selected sink hole. Ensure gasket (3) is properly seated in the base.

2. Secure body to sink with nut and gasket (1).

3. From under the sink, screw bottle (4) onto the body assembly shank.

4. Insert pump and head (5) into body (2).

Note: To fill, lift head and pump assembly out of the bottle and pour no more than 8 oz. into the bottle. DO NOT remove bottle each time as this weakens the neck. Periodically pull pump and head assembly out to soak and pump warm water through pump to remove soap build-up.

Water Line Connections

A. Connections: Ensure all fittings and end connections are free of debris. Faucet fittings (1) are 3/8" compression, with ends colored red for hot and blue for cold. Loop tubing (2) if it is too long. Note: Recommended tubing minimum bend diameter is 8". Secure metal nut (3) on faucet tube to supply valve connection (4) and hand-tighten, then tighten one additional turn with wrench. DO NOT OVERTIGHTEN. Repeat for other tube. Warning: Do not use pipe dope or other sealants on water line connections.

B. Custom Fit Connections: If you determine the PEX supply tubing for this faucet is too long and must be shorter to create an acceptable installation, be sure to read the instructions and plan ahead. When cutting the supply tubing, the installer accepts the responsibility to do so in a way that allows a leak-free joint to be created. Delta is not responsible for tubing that is cut too short or cut in a way that will not allow for a leak-free joint. For custom fit installations, you must use RP50952 sleeves supplied with the model and nuts included on supply lines. Tube cut must be straight. See plastic sleeve installation instructions found in RP50952 and included in this document for more information.

Secure metal nut (1) on faucet tube to supply valve connection (2) and hand-tighten, then tighten an additional 2 turns with wrench. DO NOT OVERTIGHTEN. Repeat for other tube.

Potential Problems and Remedies

Tubing not cut perpendicular: Carefully make an additional cut, being careful not to cut the tube too short.
Tubing cut too short: Buy a coupling union and a replacement supply line that mate together from a store. The coupling union end intended to connect to the faucet must mate to the standard 3/8" connection nuts and plastic sleeves supplied with the faucet.
Plastic sleeve or connection nut lost: Purchase a replacement nut and/or plastic sleeve that are designed to seal with PEX tubing. NOTICE: DO NOT use a metal sleeve, RP51243 gasket (supplied with faucet) or ferrule in the place of the plastic sleeve supplied, it may not create a leak-free joint.
Warning: Do not use pipe dope or other sealants on water line connections.

Setting the Handle Limit Stop (Optional)

This faucet includes an integrated handle limit stop that has two positions. Position 1, to the left, allows full handle motion (the full range between "all cold" to "all hot"). The faucet is set in position 1 in the factory. Position 2, to the right, allows half of the normal handle motion ("all cold" to "mixed hot/cold").

The handle limit stop can be adjusted by the homeowner once the faucet is installed. Setting the handle limit stop in position 2 may help to prevent scalding because it limits the amount of hot water in the mix; however, this handle limit stop will not always prevent scalding because it does not compensate for incoming pressure or sudden water temperature changes.

To change positions of the handle limit stop: Remove the handle; move the valve stem to the all cold position so the water is on; change the position of the handle limit stop; turn off the water; reinstall the handle.

Maintenance

Low Flow

A. Remove and clean Aerator (1) with supplied wrench (2), or

B. SHUT OFF WATER SUPPLIES. Replace valve cartridge (3).

Leaks Under Handle

Remove handle and unthread trim cap (4). Using a wrench, ensure bonnet nut (5) is tight. If leak persists - SHUT OFF WATER SUPPLIES. Replace valve cartridge (3). When reinstalling parts, make sure bonnet nut (5) is tightened securely with a wrench.*

Leaks from Spout Outlet

SHUT OFF WATER SUPPLIES. Replace valve cartridge (3). When reinstalling parts, make sure bonnet nut (5) is tightened securely with a wrench.*

Warning: Failure to securely tighten bonnet nut with a wrench could result in water damage.

Note: A small amount of water may run out the spout or drip for a very short period after the faucet is shut off. This is a natural occurrence caused by the long flexible hose.

Note: Do not attempt to disassemble cartridge (3). There are no repairable parts inside.

Cleaning and Care

Care should be given to the cleaning of this product. Although its finish is extremely durable, it can be damaged by harsh abrasives or polish. To clean, simply wipe gently with a damp cloth and blot dry with a soft towel.

Parts List

RP54537: Spout Assembly with Magnet
RP51480: Sprayer Assembly
RP50815: Aerator
RP52116: Wrench
RP50788: Spout Gasket
RP50785: Mounting Hardware
RP40650: Set Screw
RP51496: Red/Blue Button
RP40520: Spout Ring, Friction Washer & Clip
RP50587: Valve Assembly
RP46748: Handle w/Button & Set Screw
RP51481: Sleeve Assembly
RP6052: Gasket
RP51503: Bonnet
RP21945: Nut
RP50813A: Soap Dispenser
RP51243: Gaskets
RP13938: O-Ring
RP50952: Cut-To-Fit Hose Ferrules
RP47029: Bracket
RP47030: Nut & Wrench
RP49149: Steel Weight Assembly
RP50390: Hose Assembly & Clip
RP37490: Stabilization Plate

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