Haws 6521FR Guide

04/22 Model 6521FR Page 1 of 6
INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS
1455 Kleppe Lane Sparks, NV 89431-6467 [phone] Fax [phone]
E-mail: [e-mail] website: www.hawsco.com
No. 0002077820 (18)
Model 6521FR
LIMITED WARRANTY
HAWS warrants that all of its products are guaranteed against defective material or poorworkmanship for
a period of one year from the date of shipment. The foregoing notwithstanding, HAWS warrants certain
specific products or components thereof for an adjusted period.A listof these excepted products and
components and a description of their respective warranty terms may be found here:
www.hawsco.com/warranty. HAWS’ liability under this warranty shall be discharged by furnishing wit hout
charge F.O.B. HAWS factory any goods, or part thereof, which shall appear to the Company upon
inspection to be of defective material or not of first-class workmanship, provided that a claim is made in
writing to Company within a reasonable period after receiptof the product. Where claims for defects are
made, the defective part or parts shall be delivered to the Company, prepaid,for inspection. HAWS shall
not be liable for the cost of repairs, alterationsor replacements, or the labor required to implement them,
or for any expense connected therewith made by the owner or owner’s agents, except upon written
authority fromHAWS. HAWSshall not be liable for any damages caused by defective materials or poor
workmanship,exceptfor replacements,as provided above.Buyeragrees that HAWShas made no other
warranties either express or implied in addition to those above stated, exceptthat of title with respect to
any of the products orequipment sold hereunder and that HAWSshall not be liable forgeneral, special,
incidental, or consequential damages claimed to arise under the contractof sale.
Equipment manufactured by HAWSis warranted to function if installation and maintenance instructions
provided are adhered to.The units also must be used for the purpose for which they were intended. Any
HAWS emergency equipment is intended to supplement first-aid treatment. Due to widely varying
conditions, HAWScannot guaranteethat theuse of thisemergency equipmentwill preventserious injury
or the aggravation of existing orprior injuries.
EXCEPT AS EXPRESSLY STATED HEREIN, HAWS HEREBY DISCLAIMS ALL WARRANTIES,
WHETHER EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, INCLUDING WITHOUT
LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THIS WARRANTY MAY NOT BE MODIFIED OR EXTENDED WITHOUTTHE
WRITTEN CONSENT OF HAWS. REMEDIES AND REPLACEMENTS STATED HEREIN ARE
EXCLUSIVE. IN NO EVENT SHALL HAWS BE LIABLE FOR ANY SPECIAL, PUNITIVE,
CONSEQUENTIAL OR INCIDENTAL DAMAGES TO ANY PERSON INCLUDING BUT NOT LIMITED
TO DAMAGES FOR LOSS OF USE OR PROFITS, SUBSTITUTEPRODUCTS ORCOSTS,PROPERTY
DAMAGE, OR OTHER MONETARY LOSS.
NOTE TO INSTALLER: Please leave this information with the Maintenance Department.
SHOULD YOU EXPERIENCE DIFFICULTY WITH THE INSTALLATION OF THIS
MODEL PLEASE CALL:
TECHNICAL SUPPORT: 1-800-766-5612
FOR CUSTOMER SERVICE: 1-888-640-4297

04/22 Model 6521FR Page 2 of 6
RECOMMENDEDTOOLS: Screwdriver,level,12" adjustable wrench, 10" pipe wrench,
5/16", 3/4", 9/16", 1/2" and 7/16" open end wrenches.
LOCATION OF UNIT: Installed indoors only on the inside wall, and where the temperature
does not go below 50°F. Used with single bubbler wall mounted fountains only. The waste
and supply heights should be taken from the installation instruction sheet of the fountain.
SUPPLY LINE: The minimum recommendedline size is 1/2" IPS with 30-90 psi (2-6 ATM).
Where sediment or mineral content in water is a problem, an inlet filter is recommended.
PLUMBING CONNECTIONS: Inletvalveis 1/2 NPT(F). Waste trap outlet is female1-1/4"
NPT.
INSTALLATIONPROCEDURE
GENERALNOTES:
1. For all plastic push-in type fitting connections, only connect NSF-61 copper or
plastic tubing. Stainless steel or glass tubing is not recommended. The
followingassembly instructions must be followedto ensure a watertight
connection:
a. Cut tubingsquare and clean.
b. Markfrom end of tube the length of insertion (See table below).
c. Push tube into the fitting until it bottoms out.
d. Toremove, depress collet and pull tubing out.
TubeSizes
O.D.
Tolerance
Insertion Depth
3/8”
±.005”
3/4”
Referto Installation Drawingfor installation. Use pipe joint sealant on all water connections.
STEP 1: Locate and mount the fountain on wall in desired location per Installation Drawing
shipped with fountain. Attach waste bend to underside of fountain and mark center
of tube on wall, drill 2-1/2" hole through wall at mark.Then locate and drill 1/2"
diameter hole and 1- 3/8" diameter hole through the wall (as shown on Installation
Drawing).
STEP 2: Mount freeze-proof cabinet on backside of wall so that waste, supply and operating
holes in cabinet line up with holes drilled through wall. Then cutand thread 1-1/4"
nipple long enough to allow the waste bend to enter the nipple and the 1-1/4" slip-
joint nut and washer to be tightened fullyon the fountain side. The nipple mustbe
long enough to be threaded into the 1-1/4" NPTelbow in cabinet (see viewA on
Installation Drawing).

04/22 Model 6521FR Page 3 of 6
INSTALLATIONPROCEDURE
STEP 3: Snap in 1/8" bushing (provided) before feeding the 1/8" tubing through the 1/8" IPS
pipe sleeve (not provided) (see view C on Installation Drawing) then attach to the
push button and secure with the compression nut hand tight only. Bend the 3/8"
copper tubing (provided) into appropriate hole and insert through the 1" IPS pipe
sleeve (not provided) from the cabinet side (see view B on Installation Drawing).
Connect tubing to drain valvefitting in cabinet and measure, cut and connect tubing
to bubbler. Be sure the tubing has a uniform slope downward from the bubbler to the
fitting on top of the drain valve.Avoid low spots, which might collectwater causing
ice plugs in freezing weather.
STEP 4: Flush the incoming water supply line before hook-up and install a shut-off valve(not
supplied).
STEP 5: Insert 1/2" IPS pipe supply (not supplied) through side of box and attach to ½” NPT
elbow (supplied). Insert 1-1/4” IPS waste pipe (not supplied) through the side of box
and attach the 1-1/4” elbow of the trap assembly.
STEP 6: Turn on the shut-off valve(not supplied) and check forleaks. Push the operator
button on and check forleaks. When the button is released the control valve should
turn off and the drain valve should open and allow the 3/8" bubbler line to drain into
tailpiece above the trap.
STEP 7: When the fountain operates satisfactorily, install the coveron the box with the louver
openings facingdown. Attach the bottom plate to the fountain.
IMPORTANT: VALVE BOX MUST BE MOUNTED IN HEATED AREA PROTECTED FROM FREEZING
TEMPERATURES. PROVISIONS SHOULD BE MADE TO ALLOW ACCESS TO ACCESS PANEL.

04/22 Model 6521FR Page 4 of 6
TROUBLESHOOTING
PROBLEM
REPAIR CHECKLIST
1.
Bubbler Flow Control.
1.
Adjust pressure regulator:
a.
Loosen the locknut.
b.
Rotate the knob clockwise to increase flowor
counterclockwise to reduce flow.
c.
Tighten the locknut.
d.
Repeat the above steps until the bubblerflowis correct.
e.
Replace pressure regulator if necessary.
2.
Insufficient bubblerflow
2.
a.
Check that the shut-off valve (not supplied) is wide open.
b.
Verify minimum 30 psi supply pressure.
c.
Clean inlet strainer screen located in the valve body.
d.
Adjust Pressure Regulator (Refer to Step 1).
3.
No flow
3.
a.
Check for leaks in the air tubing going from thepush button
to the valve.
b.
Make sure the air tubing compressionnuts are hand tight.
c.
Disconnect air tube from push button assembly. Blow into
tube to verify valve function. Replace valve if necessary
(Model 5881).
d.
Disconnect air tube from push button. Place finger over air
outlet. Push buttonto test diaphragm. Tighten diaphragm
cap screws. Replace diaphragm assembly if necessary
(Model VRK2AV).
4.
Continued insufficient or varied
height of bubblerflow.
4.
a.
Check for kinks in the tubing.
b.
Replace pressure regulator if necessary.
5.
Continuous bubblerflow.
5.
a.
Ensure that push button is not obstructed and springs back
to normal position.
b.
Remove fourscrews which secure plastic diaphragm block
to brass valve body. Pull plastic and rubber diaphragm
assembly out of valve body. Locate tiny hole in rubber
diaphragm just under lip of plastic part. Clean debris from
this hole. Inspect valve seat for grooves. If seat is worn,
replace with stainless steel seat (newer models) or replace
valve (older models, integral brass seat).
c.
If valve seat was OK and diaphragm holes were free from
debris, inspect rubber buttonlocated at center of floating
steel disc in valve diaphragm block assembly. If button is
worn, turn disk overor replace disk (Model VRK2AV).
d.
If diaphragm and seats are in good condition, stretch spring
slightly. Spring is located behind floating stainless-steel
plate.
e.
Ensure that air bleed port on valve plastic block assembly
is not plugged.
6.
Water leaking from valve box in
wall.
6.
a.
Check tubing connections for leaks.
b.
The drain-back f reeze protection f eature drains through a 1”
air gap surrounded by plastic funnel (splashguard). If drain is
plugged, water will spill out of funnel. Unplug drain.
7.
Fountain line from valve box to
bubbler blocked with ice.
7.
a.
Check slope of tubing to bubbler, must slopedownward from
bubblerto drain valve.
b.
Clean orreplace drain-back valve threaded into tee strapped
to plastic funnel (Model 6518FRDV).
General Notes: Before tightening nut and ferrule assembly, push tubing into fitting until it bottoms out to
ensure correct engagement with O-Ring.
© 2014 Haws®Corporation –All Rights Reserve
HAWS® and other trademarks used in these materials are the exclusive property of Haws Corporation.

SEE
DETAIL B
DETAIL B
SCREEN
DIAPHRAGM
HOUSING
THIS BLACK COVER IS NOT INTERCHANGEABLE
WITH GRAY COVER USED ON OLDER 5881 VALVES.
6518FRDV
NOTE:
VRK3AV (COVER, BLACK COLOR)
5881
VALVE
ASSEMBLY
VRK3AV 1
PARTS
5/32" O.D. TUBING
5/32" O.D. TUBING (NOT SUPPLIED)
DIAPHRAGM
(VALVE REPAIR KIT)
VRK2AV
SPRING
DISC
SEAT
5881
VALVE ASSEMBLY
(EXPLODED VIEW)
1/2" NPT (F)
1/2" NPT (F)
DRAIN
VALVE
STRAINER
CLEANOUT
0005982897
TRAP 1-1/4"
(NOT SUPPLIED)
(SCREWS & WASHERS NOT SUPPLIED WITH COVERS).
DETAIL
5867
REGULATOR
ASSEMBLY
ADJUSTMENT
KNOB LOCKNUT
5867 REGULATOR DETAIL
APPROVED
DRAWN
PART NUMBER
SCALE: SHEET OF
REVISION
DRAWING TYPE: SIZE: A
BYECN NO.
PAGE
DATE
DATE
ECN:
REVISED PER
CHKD
Haws Corporation - All Rights Reserved
HAWS and other trademarks used in these materials are the exclusive property of Haws Corporation.
C
R
MODEL(S)
1455 KLEPPE LANE
SPARKS, NEVADA 89431
[phone] FAX [phone]
E-MAIL: [e-mail]
WEBSITE: WWW.HAWSCO.COM
THIS DOCUMENT IS TRUE AND CORRECT AT TIME OF PUBLICATION. CONTINUED PRODUCT IMPROVEMENTS
MAKE SPECIFICATIONS AND MEASUREMENTS SUBJECT TO CHANGE WITHOUT NOTICE.
WHEN ORDERING PARTS PLEASE SPECIFY MODEL NUMBER.
F. VASQUEZ 04/13/04
18
0002077820
6521FR
N/A
11
FV 07/08/22
JS
5 of 6
PARTS BREAKDOWN
5799
2022
1
BREAKDOWN

WASTE
ACTUATION
SUPPLY
76mm
3"
SEE VIEW "B"
SUPPLY
Ø6.4mm
1/4" MTG HOLES
SEE VIEW "C"
ACTUATION (AIR INLET)
DRAIN VALVE
DRAIN WASTE ASSEMBLY
10"
254mm
203mm
8"
(NOT SUPPLIED)
1/2" IPS SUPPLY
SUPPLIED)
WASTE (NOT
1-1/4" IPS
AIR GAP
25mm
1"
127mm
5"
356mm
14"
SUPPLY
76mm
3"
12"
305mm
WATER AND FREEZE
FR BOX
VIEW "C" ACTUATION
5/32" O.D. ACTIVATION
TUBING FROM PUSH
BUTTON TO VALVE
WHICH CAN COLLECT
DIPS OR LOW SPOTS
MUST NOT HAVE
SUPPLY TUBING
(NOT SUPPLIED)
1" PIPE SLEEVE
SULATION
FOAM IN-
VIEW "B" SUPPLY
FR BOX
WALL THICKNESS
WASTE ASSEMBLY
DRINKING FOUNTAIN
NUT AND WASHER FROM
WITH 1-1/4 SLIP JOINT
1-1/4 0.D. WASTE
(NOT SUPPLIED)
1-1/4" NPT NIPPLE
12" [305mm] MAX
ELBOW TO DRAIN
1-1/4 NPT X 1-1/4 NPSM
VIEW "A" WASTE
1. UNIT MAY BE RECESSED MOUNTED IN WALL AS SHOWN
IN VIEW "C" OR SURFACE MOUNTED AS SHOWN IN
VIEWS "A" AND "B".
FR BOX
FR BOX
COVER
INSERT SNAP BUSHING (SUPPLIED)
INTO APPROPRIATE 3/8" DIA HOLE
IN CABINET (DEPENDING ON MODEL)
FROM BEHIND.
BEND TUBING 90°
4"
101mm
1/8"
3mm
NOTES:
4"
102mm
SEE VIEW "A"
2. VALVE MUST BE INSTALLED IN SPACE THAT MAINTAINS
A MINIMUM OF 50°F (10°C).
APPROVED:
DRAWN:
PART NUMBER
DRAWING NO.
SCALE: SHEET OF
REV
DRAWING TYPE: SIZE: A
BY:ECN NO.
PAGE
DATE:
DATE:
ECN:
REVISED PER
CHK'D.:
Haws Corporation - All Rights Reserved. HAWS and other trademarks used in these materials are the exclusive property of Haws Corporation.
CR
MODEL(S)
1455 KLEPPE LANE
SPARKS, NEVADA 89431
[phone] FAX [phone]
E-MAIL: [email protected]
WEBSITE: WWW.HAWSCO.COM
THIS DOCUMENT IS TRUE AND CORRECT AT TIME OF PUBLICATION. CONTINUED PRODUCT IMPROVEMENTS
MAKE SPECIFICATIONS AND MEASUREMENTS SUBJECT TO CHANGE WITHOUT NOTICE.
CJL 09/92
09306A00 18
0002077820.D
6521FR
1:5
11
FV 07/08/22
JS
6 of 6
INSTALLATION
5799
2022
SHUT-OFF VALVE
(NOT SUPPLIED)
COMPRESSION NUT,
HANDTIGHT ONLY
AIR BLEED
OUTLET PORT
76mm
3"
51mm
2"
1/2" NPT
1-1/4" NPT
PIPE SLEEVE SIZE
TO ACCOMODATE
5/32" O.D. TUBING
(NOT SUPPLIED)
(SUPPLIED)
3. DRINKING FOUNTAIN AND BOTTLE FILLER MODELS 1109FR & 1920FR
EACH REQUIRE A SEPARATE 6521FR UNIT. DUAL DRINKING FOUNTAIN
MODEL 1119FR REQUIRES TWO SEPARATE 6521FR UNITS. THE MODELS
(ONLY)
LISTED HERE ARE AVAILABLE SEPARATELY OR AS PART OF PRODUCT BUNDLES.