7. Warranty, Maintenance & care
Feltonmix Ltd guarantees the Venturi mixer to be free from defects in materials
and workmanship for a period of five (5) years from the date of purchase. Proof
of purchase (as below) may be required.
Feltonmix Ltd undertakes at its sole discretion to repair or replace any faulty
product within the warranty period. This warranty does not cover any damage
to product due to abuse, negligence or improper installation.
This warranty is given on the understanding that the product is installed and
operated according to this installation guide and the Australian/New Zealand
standard AS/NZS3500, by a registered plumber.
at no stage should chrome plated and brushed surfaces be cleaned with
cleaning agents that contain a corrosive acid or a scouring additive.
chrome plated and brushed surfaces should be cleaned with liquid
detergent or soap and water.
any damage caused through the use of an unsuitable cleaner will not be
covered by warranty.
Please fill in details below, attach your receipt to this installation guide booklet
and keep as proof of purchase.
Date of purchase:
Venturi MiniMal SHOWer MiXer inStallatiOn GuiDe
1. exploded Diagram of Mixer 5. trouble Shooting 9
2. instructions for installation 4 6. Servicing / replacing Seals 10
Feltonmix Ltd PO Box 18100 Glen Innes Auckland 1743
3. changing rotors 8 8. Fine tuning your Mixer 11
t 0800 743 358 t +64 9 528 0810 F +64 9 521 1646 F 0800 329 335
e email@example.com W www.felton.co.nz 4. inserting Flow Washers 9 7. Warranty, Maintenance & care 12
1. eXplODeD DiaGraM OF MiXer
(18) hot isolator (red) (19) cold isolator (blue)
(16) stainless steel springs
(4) chrome/brushed (5) white faceplate
cover sleeve nut
(10) hot flow
(insert only if required) (14) stainless
(12) Venturi cold water
concealed inlet nipple
(3) black nut trim cover (11) cold flow
(9) Venturi rotor & cam set (insert only if required)
(1) handle lever (2) handle body (7) large grey nut
2. inStructiOnS FOr inStallatiOn
please take the time to double-check that you have the correct rotor installed P recommended Operating pressures
for your application.
rotor Minimum cold Supply Minimum Hot Supply
(Flow pressure) (Flow pressure)
u U - white
unequal pressures Unequal* 200kpa (30psi) 20kpa (3psi)
E/H - green
Equal 20kpa (3psi) 20kpa (3psi)
* For optimum temperature control ensure cold water pressure is between
e/H 7 - 10 times the hot water pressure.
this mixer is fitted and factory tested with the u (white) rotor. recommended Operating temperatures
An E/H (green) rotor is included separately in this box.
Hot Minimum 55 °C Maximum 80 °C
To replace U (white) rotor with E/H (green) rotor please see instructions on page 8.
Cold Minimum 5 °C
Also included are flow washers which can be installed into either or both isolating
nipples to fine tune your mixer, as described on page 11. To install flow washers
please see instructions on page 9.
2. inStructiOnS FOr inStallatiOn (continued)
Grip and turn 2.1 Thoroughly flush all pipe work before it is important nOt to apply heat to
anti-clockwise installing the mixer to avoid blockage or copper supply pipes when they are
damage to the rotor and seals. fitted to the mixer.
iii. Slide nut
2.2 Grip the chrome/brushed cover sleeve trim cover 2.7 Cut out a 125-130mm diameter hole in
on the Venturi mixer body and turn over the wall lining.
anti-clockwise to remove both the
chrome/brushed cover sleeve and the ii. Re-fit cover sleeve 2.8 Slide the faceplate over the mixer body
white faceplate nut. and faceplate nut and re-fit the white faceplate nut using
i. Slide faceplate the chrome/brushed cover sleeve. Hold
2.3 Mount the mixer body to suitable over mixer body the faceplate in place so that the hot
support timber using screws supplied. and cold indicators are positioned
Ensure distance from face of wall lining correctly and tighten the white face
is between 52 - 62mm. Attach handle body plate nut firmly against the faceplate.
and screw on handle
52 to 62mm 2.4 Connect the hot supply pipe to the hot lever 2.9 Slide the black nut trim cover over the
isolator (red) and the cold supply pipe chrome/brushed cover sleeve.
From support timber to to the cold isolator (blue). Ensure that
face of wall lining these pipes do not place any unneces- 2.10 Fit the handle body onto the (mixer)
sary tension on the isolators when lever and screw in the handle lever
tightened. by twisting it anti-clockwise.
Pipework to wingback outlet
Note: If necessary, straight ‘retro- 2.11 Your Venturi mixer is now ready to use.
nipples’ (part number VSMRN) may be
installed instead of isolators.
toolmate 2.5 Using your hand or the plumber’s tool
mate provided, check that both isolators
are fully open (turn isolator anti-clock
wise till it hits a stop).
2.6 Connect the outlet nipple from the top
Hot supply Cold supply of the mixer to pipework to wingback
pipe to hot pipe to cold outlet. There is no minimum straight
isolator (red) insolator (blue) pipe recommended from the mixer but
for best results on very low pressures
avoid sharp bends and long pipe runs.
3. cHanGinG rOtOrS 4. inSertinG FlOW WaSHerS
Listed below are instructions for changing out rotors in existing installations. White washers are for use on cold water only. Brown/red washers are for
To change rotors in a new mixer prior to installation, follow the steps marked use on hot water.
with * only.
4.1 Inserting flow washers
3.1 Unscrew the handle lever and remove Insert the washer small diameter first into the brasss threaded nipple.
handle body. Use a device to push the washer until it stops and lies flat on the white
plastic surface inside the isolator.
Unscrew handle lever 3.2 Remove the black nut trim cover.
and remove handle 4.2 Extracting flow washers
body 3.3* Grip the chrome/brushed cover sleeve Insert a device through the washer’s central 3mm hole to extract it.
and turn anti-clockwise to remove
white faceplate nut.
5. trOuBle SHOOtinG
3.4 Remove faceplate.
5.1 Dripping from outlet when mixer is turned ‘off’
i. Remove nut 3.5 Using the plumber’s toolmate provided,
trim cover turn off water supply at the mixer Water may continue to drip from the shower head for some time –
isolators or at the mains supply, however if your shower drips continously when in the ‘off’ position this
ii. Undo cover sleeve whichever is more convenient. indicates damaged seals or a damaged rotor.
and faceplate nut
3.6* Using the plumber’s toolmate, unscrew Are filters (supplied in the mixer at manufacture) installed? If not, debris
iii. Remove faceplate the large grey nut. may have entered the mixer and damaged seals and possibly the rotor or
cartridge. Re-fit filters and replace seals (see instructions on page 10).
3.7* Remove rotor carefully from the mixer
with a pulling and rotating action. If after replacing seals the shower continues to drip, replace rotor (see
instructions on page 8).
Plumber’s 3.8* Ensure the correct rotor is clean and
toolmate free of damage or scratches. Insert 5.2 Insufficient water flow (both hot and cold)
correct rotor and re-assemble in
reverse order. Ensure filters are clean and both isolators are turned on fully.
3.9 Test the mixer for desired flow and Check that the correct rotor has been installed and ensure sufficient flow
temperature control before re-fitting the and pressure conditions, as per installation instructions on page 4 and 5.
i. Unscrew For more information on trouble shooting please visit our website at:
large grey nut www.feltonmix.co.nz
ii. Remove rotor
6. SerVicinG / replacinG SealS 7. Fine tuninG yOur MiXer
Replacement seal kits (part number VSMSK) are available from any Feltonmix
E/H Rotor with
6.1 Loosen the handle lever and remove handle. Remove the black nut trim cover, E/H Rotor U Rotor flow washers
chrome/brushed cover sleeve, faceplate nut and faceplate. Situation GREEN WHITE fitted to both
6.2 Using the plumber’s toolmate provided, turn off water supply at the mixer
isolators or at the mains supply, whichever is more convenient.
Continuous water with flow washer
6.3 Carefully prise the stainless steel clips towards you with a screwdriver and heater on hot side
remove clips completely. Pull isolators out and clear of mixer body.
6.4 Loosen the screws securing the mixer body and remove the mixer body from
the wall. Equal mains with flow washer
pressure on hot side
6.5 Using the plumber’s toolmate, unscrew the grey large nut.
6.6 Remove the rotor & cam set carefully from mixer with a pulling and rotating
no flow washer
6.7 Using seal extractor tool provided in the replacement seal kit, insert the end
marked ‘REMOVE’ fully into hole in centre of seal, (located in the inlets of the
mixer) and withdraw seal and stainless steel spring at the same time.
6.8 Ensure that all internal surfaces and the replacement parts are clean. pressures
6.9 Fit blade of seal extractor tool end marked ‘REPLACE’ into slots in bore of
new seal and spring.
approx. 3-6 litres per minute
6.10 Lubricate the front face of seals with approved silicone grease. Fit seal nto
inlet bore until lugs on seal line up with slots in inlet bore and push fully home. approx. 5-10 litres per minute
6.11 taking extra care not to scratch/damage the rotor, remove ‘o’ rings on approx. 10 or more litres per minute
rotor and replace with new ‘o’ rings.
Please note that the flow rates above may not be reached if water pressures or
6.12 Remove isolator ‘o’ rings and fit new ‘o’ rings supplied. temperatures fall outside of those recommended on page 5.
6.13 Remove filters from isolators, clean and re-fit.
6.14 Re-assemble in reverse order. Test the mixer before re-fitting face plate.