Attention Plumbers:

Due to the ‘UNBLOCKABLE’ classification of the AVSC Drain (a submerged fitting), only one suction riser (per connection) is required. This riser(s) must be installed directly in the center of the pool, at its deepest point. The AVSC drain is shipped from the factory with a pressure plug installed. See page 4 for plumbing details if a hydrostatic valve is required.

SEE SEPARATE INSTRUCTIONS IF THE AVSC DRAIN IS GOING TO BE INSTALLED AS A SIDEWALL SUCTION OUTLET. NEVER INSTALL THE AVSC DRAIN IN A SEAT OR A BACKREST AREA.

1. Since the AVSC Drain is installed at the plumbing stage, it is important that the unit be installed directly in the middle of the deepest point of the pool and set at the proper height (The AVSC will determine the pool depth).

2. In order to ensure the AVSC Drain is set at the proper height, a string line must be run across the pool from the top of the bond beam forms and directly over the lowest point in the pool where the drain riser will be located (See Figure 1).

3. Install the appropriately sized PVC pipe (main suction line) with a 90° elbow, ready to receive the riser pipe that will connect to the drain. Determine the length (height) of the riser (See Figure 2).

4. The top rim of the AVSC Drain must be set so that the distance from the string to the top edge is equal to the pool depth plus 3”.

5. It is recommended that the AVSC Drain be connected to a 3” suction line (minimum). Certified flow rates are based on 3” plumbing only.

6. When determining riser height, consider the pipe size being used (See Figure 3).

7. From the string, and directly over the center of the pool, measure down along the vertical riser and mark the cut-off point as described in Figure #3. If 2 ½” suction lines are being used, the riser is cut off at a point equal to the pool depth plus 9” down from the string. If 3” suction is being used, the cut-off point on the riser will be equal to the pool depth plus 11” down from the string.

8. Once the riser has been cut to the proper length, it may now be glued into the 90° elbow. Use a level to

Figure 1

Installation InstructionsAVSC (Anti-Vortex single channel) drain single/dual suction Pebbletop & standard cover installation guide

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ensure that the riser is vertical on all sides. The AVSC Drain may now be glued to the riser and using the string as a guide, make sure the unit is lined up with the string and 90° to the sides of the pool (NOTE: Use ABS to PVC cement).

9. At this point, make certain that there is suf-ficient space excavated below the channel drain for steel installation.

10. The AVSC Drain is now ready to pressurize prior to shotcrete or gunite. A test plug is already installed (See Figure 7).

Steel and Gunite

11. The steel reinforcement bar must be bent so that the steel basket drops below the AVSC Drain and is formed so that it is half way between the bottom of the AVSC Drain and the bottom of the trench (See Figure 4).

12. Make sure the plastic construction cover is secured in the AVSC Drain to prevent concrete entering the drain sump (See Figure 5). For complete protection of the drain during shotcrete or gunite, use A&A AVSC Gunite Cover (Part# 572834). Once the application of gunite/shotcrete is completed, the cover may be removed for use on the next project.

13. When applying gunite or shotcrete, begin by ‘shooting’ material around the base of the AVSC Drain to help stabilize the unit. This will help to keep the drain locked in place and prevent movement as the hose moves around the bottom of the pool during the course of gunite/shotcrete

Figure 3

Figure 4 Figure 5

***When using two or more suction fittings on a common suction line, suctions must be separated by a minimum of 3 ft or they must be located on two different planes (i.e., one on floor and one on the wall).

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installation. Finish the floor around the drain to approximately ½” below the top of drain.Using your fingers and margin trowel, ‘swipe’ and clear the material around and under the water stop so the interior finish material can be applied under the lip of the water stop (See Figure 6).

Final Finish

14. Before the final finish (plaster, marcite, pebble or other fin-ish material) is applied, make certain that the plastic con-struction cover is still securely sealed and in place to prevent the finish material or slurry from entering the AVSC Drain sump.

15. When applying the finish material around the AVSC Drain, ensure to ‘push’ and pack the material up under and around the water stop to ensure a water-tight seal. Final pool finish should be flush with top of drain.

16. Before filling the pool with water, remove the plastic construction cover.

17. Remove the test plug from the AVSC Drain and glue in the safety shield with the supplied packet of glue (See Figures 7 and 8).

18. Install the top on the Channel Drain. Use ONLY the supplied Torx safety screws (screwdriver tips are included in the packet with the screws (See Figure 11).

Figure 6

***The suction fitting should be inspected for damage or tampering before each use of thefacility. Missing, broken, or cracked suction fittings shall be replaced before using this facility. Loose suction fittings shall be reattached or replaced before use of this facility.

Figure 7 Figure 8

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Optional: PebbleTop Drain Cover - (Manufactured by Color Match Pool Fittings for use with A&A Manufacturing’s AVSC sump model #571735, 571751, 571743, 571760 and Baffle # 571727 under US Patents 6,209,586 6,340,035 & 6,557,588)

19. The PebbleTop AVSC cover allows for the installation of the interior finish directly into the drain cover, making the drain disappear into the floor of the pool.

20. Apply a sufficient amount of interior finish to the top of drain the cover to allow the material to be packed into the recessed areas on the upper cover surface.

21. As the surface is troweled, pack the interior finish to fill all voids and level the material until flush with the expansion joints and outer edge of the cover (The expansion joints must be exposed to eliminate cracking).

22. Allow material in the cover to cure properly.

23. When applicable, lightly acid wash the surface to expose the aggregate finish.

24. Follow steps 15-18 above as described for a non-pebble top version of the cover.

Hydrostatic Valve (Optional):

If not using a hydrostatic valve, glue the provided plug in place to ensure a water tight seal

If the AVSC Drain requires a hydrostatic valve, install it in the fitting provided on the bottom of the drain (See Figure 9). Glue the perforated collection tube (cut to desired length) into a 1 ½” PVC female adapter or couple to a 1 ½” CPVC threaded nipple. Thread the collection tube assembly into the provided fitting on the AVSC Drain. It is recommended that glue be applied to the threads to ensure a permanent, water-tight seal. From the top side of the AVSC Drain, install a plug or hydrostatic valve of choice.

Figure 9

Figure 11

Figure

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Figure 12

HEAD LOSS CURVE

Installing the Dual Suction AVSC Floor Drain

The AVSC Drain is also available in a dual suction (connection) model that may be configured to accommodate more than one pump. If it is needed, a hydrostatic valve fitting is also available (See Figure 10).

Installation and steel forming for the dual suction AVSC Drain is identical to the single suction drain (See Figure 12). The NSF certified maximum flow rate for the Floor Mounted Dual Suction AVSC Drain is 237 GPM.

Maximum flow rate is not to be exceeded.

***In the event that one suction outlet is completelyblocked, the remaining suction outlet(s) serving that system. MUST have a flow rating capable of the full flow of the pump(s) for the specific suction system.

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Figure 13

Figure 14 Winterization Plug With Air Fitting

A&A Channel Drain Winterization

1. To facilitate easy winterization of the main drain line, install a ‘T’ in the main drain suction line at the manifold (See Figure 13).

2. Ensure the main drain valve is closed.3. Install a winterization plug in the ‘T’ (See Figure 14)4. Using an air compressor (tankless is preferred) or blower, blow out the main drain line for a minimum of 30

seconds. With the main drain valve closed, this will provide an airlock in the line and prevent water from freezing in the pipe.

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Note to the Plumber:

Due to the ‘UNBLOCKABLE’ classification of the AVSC Drain (a submerged fitting), only one suction riser (per connection, per pump) is required. The AVSC drain is shipped from the factory with a pressure plug installed. The maximum VGB certified flow rate of a wall-mount-ed AVSC Drain is 184 GPM / 0.9 feet per second (Dual Suction); 167 GPM / 0.8 feet per second (Single Suction). Maximum flow rate /velocity is not to be exceeded.

NEVER INSTALL THE CHANNEL DRAIN IN A SEAT OR BACKREST AREA

1. The sidewall AVSC Drain should be located in the wall at the deepest part of the pool, midway down the wall. The bottom of the 90° elbow that feeds the drain must be a minimum of 18” above the top of any cove (See Figure 3), and the upper edge of the drain sump must be placed at least 12” below the bond beam form.

2. Dig a niche down the wall of the pool at the desired location of the AVSC Drain. The niche must be at least 12” wide and the back of the niche must be 12” to 14’’ from the final finish surface of the pool (See Figure 1).

3. To determine the correct depth of the niche, drop a plumb line 12” from the front of the bond beam form. This line will represent the gunite or shotcrete wall surface. (See Figure 1).

4. Recommended pipe size for the suction line is 3” schedule 40 PVC pipe. Use a level to assure that the vertical pipe is plumb both front and side. Certified flow rates are based on 3” plumbing only.

5. Install the AVSC Drain so that the plumb line will pass along the flat water stop flange on the AVSC Drain (See Figure 2).

6. When it is determined that all the parts are the proper length and the AVSC Drain will finish in the proper position, glue the parts in place. (NOTE: Use ABS to PVC cement)

Figure 1

A&A Channel Wall Drain(As Side-Wall Suction) Vertical InstallationStandard Cover Version Only

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Steel

When installing the “steel basket” around and behind the AVSC Drain, the reinforcement bar must be bent and formed so that the basket is behind and not touching the AVSC Drain (See Figures 2 and 3).

Figure 2 Figure 3

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Note to the Plumber:

Due to the ‘UNBLOCKABLE’ classification of the AVSC Drain (a submerged fitting), only one suction riser (per connection, per pump) is required. The AVSC drain is shipped from the factory with a pressure plug installed. The maximum VGB certified flow rate of a wall-mount-ed AVSC Drain is 184 GPM / 0.9 feet per second (Dual Suction); 167 GPM / 0.8 feet per second (Single Suction). Maximum flow rate /velocity is not to be exceeded.

NEVER INSTALL THE CHANNEL DRAIN IN A SEAT OR BACKREST AREA

1. The sidewall AVSC Drain should be located in the wall at the deepest part of the pool, midway down the wall. The bottom of the 90° elbow that feeds the drain must be a minimum of 18” above the top of any cove (See Figure 4), and the upper edge of the drain sump must be placed at least 12” below the bond beam form.

2. Dig a niche down the wall of the pool at the desired location of the AVSC Drain. The niche must be at least 36” wide and the back of the niche must be 12” to 14’’ from the final finish surface of the pool (See Figure 4.

3. To determine the correct depth of the niche, drop a plumb line 12” from the front of the bond beam form. This line will represent the gunite or shotcrete wall surface. (See Figure 4).

4. Recommended pipe size for the suction line is 3” schedule 40 PVC pipe. Use a level to assure that the vertical pipe is plumb both front and side. Certified flow rates are based on 3” plumbing only.

5. Install the AVSC Drain so that the plumb line will pass along the flat water stop flange on the AVSC Drain (See Figure 5).

6. When it is determined that all the parts are the proper length and the AVSC Drain will finish in the proper position, glue the parts in place. (NOTE: Use ABS to PVC cement) Steel

7. When installing the “steel basket” around and behind the AVSC Drain, the reinforcement bar must be bent and formed so that the basket is behind and not touching the AVSC Drain (See Figures 4 and 5).

A&A Channel Wall Drain(As Side-Wall Suction) Horizontal Installation Standard Cover Version Only

Bond Beam Form

8"

Plumb Line Represents Gunite

Surface

4.5"

X

12"

To Pump

Cove

To Pump

Plumb Bob

To Pump

LEV

EL

To Pump

12"

To PumpGunite or Shotcrete

Wall

Finished Surface

Plumb Bob

To Pump

Shotcrete or Gunite

8. Shoot or fill in the niche behind the AVSC Drain when first starting to “shoot” the pool. Allow that material to cure for a while as you shoot other areas in the pool. Later, return to the AVSC Drain and finish shooting and forming the concrete around the drain.

9. Pack the concrete under and around the AVSC Drain and finish the wall around the drain to 1/2” below the lip, making a finger ‘swipe’ under the water stop of the drain so that finish material can be applied under the lip of the water seal (See Figure 6). Installing the Dual Suction Wall AVSC Drain

10. The AVSC Drain is also available in a dual suction (connection) model that may be configured to accommodate more than one pump (See Figure 7). Installation and steel forming for the ‘Dual’ AVSC Drain is identical to the ‘Single’ (See Figure 4).

LEV

EL

Figure 6

Figure 7

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Part Description Color Standard Cover Part # (NSF)

Interior Top Cover Part # (IAPMO-FLOOR ONLY)

Life Span

Channel Drain Top White 573706 573765 7 Years Channel Drain Top Gray 573685 573749 7 YearsChannel Drain Top Black 573651 573714 7 YearsChannel Drain Top Blue 573669 573722 7 YearsChannel Drain Top Gold 573677 573731 7 YearsChannel Drain Top LT.Gray 573693 573757 7 Years

Cover Screws (316 SS - Tamper Proof)

+ Torx Driver

559656 559656 7 Years

Drain Screws

Channel Drain PebbleTopFigure B

Note to the Pool Builder:

This page of ASME Compliance Instructions must be left with the Homeowner for filing and future reference.

Note to the Homeowner:

These instructions must be read and retained in a permanent file for future reference of installation require-ments and part numbers for immediate replacement of damaged, worn or aged parts.

WARNING: Do not exceed the maximum VGB certified flow rate (The maximum VGB certified flow rate for each configuration is marked on each Channel Drain top) for this fitting by adding pumps or increasing the horsepower of the existing pump or pumps.

Periodically observe and inspect the AVSC Floor or Wall Drain, including all fasteners for evidence of wear or tampering and immediately replace any part found defective before using again.

The following are part descriptions (see Figure A and Figure B) and part numbers for the A&A AVSC Floor or Wall Drains:

A&A AVSC Floor or Wall DrainASME Compliance InstructionsHomeowner Copy

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