Kohler Rada 215 Series User manual

11057616-W2-J
215 and 222 Series
Important! This Manual is the property of the customer and must be
retained with the product for maintenance and operational purposes.
Product Manual

2
1057616-W2-J
INTRODUCTION
Thank you for purchasing a quality Rada
product. To enjoy the full potential of your new
product, please take time to read this guide
thoroughly, having done so, keep it handy for
future reference.
This manual covers all Rada 215 and 222
thermostatic mixing valves manufactured from May
2008. A range of ½” and ¾” mixing valves suitable
for a wide diversity of applications and installations
providing water at safe, accurate temperatures for
ablutionary or process requirements.
Model Range References:
c allchromenish
bbuilt-into wall recess or panel, temperature
control protrudes through concealing plate.
dduct or fully concealed mounting, no user
access required.
klocked temperature control, requires hexagonal
key to adjust.
oem concealed model, duct/box installation
The suffix ‘3’ indicates that the thermostatic
mixerhasbeencertiedforuseinUKHealthcare
premises as a Type 3 valve under the BUILDCERT
TMV3scheme.ForHealthcareInstallationsrefer
to the TMV Requirements Manual. The approved
designations for Type 3 Valves are as follows:
Ifyouexperienceanydifcultywiththeinstallationoroperationofyournewthermostaticmixer,please
refer to ‘Fault Diagnosis’,beforecontactingKohlerMiraLtd.Ourcontactdetailscanbefoundon
the back cover of this guide.
Patent Applications
Euro: 03254070.0
USA: US-2006-0124758-A1,
US-2007-0221740-A1
Design Registration
000578463-003,006
Models Designation
215-t3 c, 215-t3 bc,
215-t3 dk, 215-t3 oem,
215-t3 zc
HP-S,LP-S,HP-W,
LP-W,HP-T44
222-t3 HP-T44,LP-T44
TheseproductsalsocomplywiththeWater
Supply(waterttings)Regulations1999.
Patents and Design Registration
Patents
GB: 2291693,2340210,2392225,
 2421297
France: 0694721(E)
Germany:69513455.8
USA: 7 240 850
Euro: 1 672 257 DE, FR, GB, IT, NL, SE
GENERAL
1. Make sure that the product is installed and
maintained by a competent installer.
2. Make sure that they are installed,
commissioned, operated and maintained in
accordance with the recommendations in this
guide.
3. The installation must comply with all current
regulationsandpracticesspeciedbythelocal
water supply regulations and building codes.
4. The function of a thermostatic mixing valve
is to deliver water consistantly at a safe
temperature. Provided that the thermostatic
mixing valve is installed, commissioned and
operated within the specication limits and
maintained regularly according to this guide,
the risk oif malfunction, if not eliminated, is
considerably reduced.
5. Follow all warnings, cautions and instructions
contained in this guide.
6. For Type 2 and 3 installations, TMV valves are
only to be used for applications covered by
their approved designations, refer to the TMV
2 and TMV 3 Requirements Manuals
SAFETY
1. The use of the word ‘failsafe’ to describe the
function of a thermostatic mixing valve is both
incorrect and misleading. In keeping with every
other mechanism it cannot be considered as
being functionally infallible.
2. Malfunction of thermostatic mixing valves is
almost always progressive in nature and will
be detected by the use of proper temperature
checking and maintenance routines.

31057616-W2-J
3. Certain types of system can result in the
thermostatic mixing valve having excessive
‘dead-legs’ of pipework. Others allow an
auxiliary cold water supply to be added to
the mixed water from the mixing valve. Such
systems can disguise the onset of thermostatic
mixing valve malfunction.
4. Ultimately, the user or attendant must exercise
due diligence to ensure that the delivery of
warm water is at a stable, safe temperature.
This is particularly important in such healthcare
procedures as supervised bathing of patients
unable to respond immediately to unsafe
temperatures.
5. Care is required when making any adjustments
to ow or temperature. Make sure that the
temperature is suitable and has stabilised.
6. To ensure continued safe operation of this
product, all ‘Critical Components’ should be
changed every 5 years.
7. The designed service life of all critical
components used in this product is 5
years providing it is operated within the
recommended operating conditions and
parameters.However,whensupplyconditions
and/or usage patterns do not conform to the
recommended operating parameters and/
or conditions the critical components may
need to be replaced frequently in line with the
appropriate risk assessments.
8. Continued use of this product in conditions
outside the specication limits given in this
manual can present potential risk to users.
9. Important! In healthcare applications such as
hospitals, aged person facilities, residential
care homes etc., and in any other applications
where the user is similarly at risk, irrespective
of supply and usage conditons or the evidence
of in-service tests, the Critical Components
MUST be replaced at intervals of no more than
5 years.
10.Critical Components are considered as:
407.67 ThermostaticCartridge(215)
1578.046 ThermostaticCartridge(222)
408.72 FilterandNon-returnValveAssy(215-t3c)
1624.110 FilterandNon-returnValveAssy(215-t3bc)
408.81 Filter and Non-return Valve Assy (215-dk -
t3dk-t3oem)
407.84 Filter and Non-return Valve Assy (222-dk
-t3dk)
408.80 FilterandNon-returnValveAssy(215-t3zc)
SPECIFICATIONS
For applications which may be outside the
operatingparameterswhichfollow,refertoKohler
Mira Ltd, or Local Agent.
For Type 3 installations, the supply conditions
speciedinthe‘TMV3 Requirements Manual’
take precedence over the operating parameters
which follow.
Pressures
• Max Static Pressure: 10 Bar(1000kPa)
• Max Maintained Pressure: 5 Bar(500kPa)
• Min Maintained Pressure (Gravity System):
0.15 Bar(15kPa)-0.15bar=1.5Metrehead
from cold tank base to outlet.
• For optimum performance supplies should be
nominally equal.
Temperatures
• Factory Pre-set (Blend): 215 models: 41°C,
222 models: 44°C (bathllapplications,under
idealinstallationconditions).
• Optimum Thermostatic Control Range: 35°C
to 50°C (achieved with supplies of 15°C cold,
65°Chotandnominallyequalpressures).
• MaximumHotWaterTemperature:70°C*
*Note! For optimum performance reasons it
is recommended that the maximum hot water
temperature is limited to 65°C.
Caution! During thermal disinfection the
mixing valve can operate up to 85°C for short
periods. Ensure safety precautions are followed
during discharge. Chemical disinfection agents
e.g.chlorine/chloramines combined with higher
temperatures will affect the life of the product
adversely and could detrimentally affect the
thermostatic performance.
• Cold Water: up to 1°C- 25°C (5°C-20°C for
Type3installations).
• Minimum Recommended Differential between
HotSupplyandOutletTemperature:12°C.
Thermostatic Shut-down
• For safety and comfort the thermostat will
shut off the mixing valve within 2 Seconds if
either supply fails (achieved only if the blend
temperature has a minimum differential of
12°Cfromeithersupplytemperature).

4
1057616-W2-J
Flow Rates
• Minimum Flow Rate: 3 L/Min at mid-blend with
equal dynamic supply pressures.
• Maximum Flow Rate: 215 models: 40 L/Min
at mid-blend (which equates to maximum
pressurelossof3.5bar),222models:60L/
Min at mid-blend (which equates to maximum
pressurelossof3.0bar).
• Maximum Recommended Flow Velocity in
pipelines: 2 metres/second.
• Maximum Pressure Loss Ratio* should not
exceed 10:1, in favour of either supply, during
ow.
* Pressure Loss Ratio (PLR) is the ratio between
the hot and cold supply pressures after the
back pressure from outlet pipes, ow controls
and ttings have been deducted from each inlet
supply pressure.
For example, if the back pressure (measured
immediately at the outlet of the mixing valve,
and before any ow controls or ttings) is 1 bar,
the cold water pressure is 3 bar and the hot
water pressure is 2 bar then the pressure loss
ratio will be:
(3-1):(2-1) = 2:1 in favour of the cold supply.
The pressure loss ratio for Rada 215 and 222
thermostatic mixing valves should ideally be 1:1
(i.e. nominally equal inlet pressures). To achieve
this a suitable pressure regulating device should
be tted to either inlet as necessary.
Pressure loss ratio should not be confused
with pressure ratio, which is the ratio of the
inlet pressures only and takes no account of the
back pressure.
Note! High back pressures make it more difcult
for a valve to control correctly.
0050 100 150 200250 30
0350
10
20
30
40
50
60
70
Pressure Loss (kPa)
Outlet Flow (L/Min)
Rada 222
Rada 215
Flow Rate vs Pressure Loss Graph
(Mixing Valve only, equal dynamic supply pressures
and mid-blend temperature setting). There will be
additional pressure losses through the outlet ttings.
Flow Control
Rada 215 and 222 mixing valves do not have
integralowcontrol;appropriateprovisionmust
be made for this in the outlet pipework.
This can be in the form of basin/bath tap,
stopcock, mechanical timed-ow controller or
solenoid.
The device chosen must be non-concussive in
operation.
Connections
Rada 215-t3 c: Inlets and Outlet: 1/2” BSP
external union or 15 mm compression.
Rada 215-t3 bc: Inlets and Outlet: 1/2” BSP
external union or 15 mm compression.
Rada 215-t3 dk and 215 dk: Inlets and Outlet:
1/2”BSPat-facedexternal union(additionally,
on t3 models, 2 elbows and 1 straight union
connector are supplied, terminating in 15 mm
compressionconnections).
Rada 222-t3 dk and 222 dk: Inlets and Outlet:
3/4”BSPat-facedexternal union(additionally,
on t3 models, 2 elbows and 1 straight union
connector are supplied, terminating in 22 mm
compressionconnections).
Rada 215-t3 oem: Inlets: 1/2” BSP at-faced
external union. Outlet: 1/2” BSP external union or
15 mm compression (nut and olive notsupplied).
It is important that the mixing valve is connected
to the hot and cold supplies correctly, standard
connections are: Hot - Left, Cold - Right, Outlet
- Bottom.
The mixing valve body is identied with a red
and/orblue sticker(hot -red,cold -blue).The
thermostatic cartridge is also identied with a
‘H’ stamped on the cartridge lug which is also
marked red.

51057616-W2-J
Note! Should the supplies be reversed then
the mixing valve will not be able to control
temperature. This can be corrected by rotating
the thermostatic cartridge within the valve body,
refer to section: ‘Installation, Outlet Position/
Reversed Inlet Supplies’.
All models can operate in any plane, and may
be inverted if necessary for pipework layout
convenience, provided hot and cold pipework
is connected to the appropriate inlets (hot - red,
cold-blue).
Inlet/Outlet Options:
inlets* outlet*
215-t3 c top, bottom,
rear-fed top, bottom
215-t3 bc side top, bottom
215-t3 dk
222-t3 dk
any
conguration
any
conguration
215-t3 oem side bottom,top
215-t3 zc rear-fed top, bottom
*Productsaresuppliedinthecongurationshown
in bold.

6
1057616-W2-J
Rada 215-t3 c
Rada 215-t3 bc
Rada 215-t3 dk
Ø183
198
214
185
153
17
32
33
29
33
67 - 85
69
108
29
108
82
35
86
113
65
65
153
65
196
Rada 222-t3 dk
Dimensions
All dimensions are nominal and in mm

71057616-W2-J
65
55
108
108
108
108
29
29
29
29
185
65
65
65
65
65
59
128 - 178
153
Rada 215-t3 oem
Rada 215-t3 zc
Rada 215 dk
Rada 222 dk

8
1057616-W2-J
INSTALLATION
General
Installation must be carried out in accordance
with these instructions, and must be conducted by
designated,qualiedandcompetentpersonnel.
1. Before commencing, make sure that the
installation conditions comply with the
information given in section: 'Specications'.
For Type 3 valves. See also installation
conditions in the 'TMV3 Requirements
Manual'.
2. The mixing valve should be positioned for
easy access during use and maintenance.
All routine maintenance procedures can
be conducted with the mixing valve body
in place (except for strainer and non return
valveaccessondkandoemmodels).Forall
models, allow a minimum of 80 mm clearance
in front of the temperature control to enable
removal of the Thermostatic Cartridge during
maintenance.
3. Conveniently situated ‘full bore’ isolating
valves must be provided for maintenance
purposes.
4. The use of supply-line or zone strainers
will reduce the need to remove debris at
each mixing valve point. The recommended
maximum mesh aperture dimension for such
strainers is 0.3 mm.
5. Inlet pressure tappings which allow
measurement of the inlet pressures to the
mixing valve under operating conditions are
particularly recommended for healthcare
applications with Type 3 valves.
6. Pipework must be rigidly supported.
7. Certain types of system can result in the
thermostatic mixing valve having excessive
‘dead-legs’ of pipework, or auxiliary cold
water supply added to the mixed water from
the thermostatic mixing valve. Such systems
can disguise the onset of thermostatic mixing
valve malfunction and should not be used.
8. Supply pipework layout should be arranged to
minimise the effect of other outlet usage upon
the pressures at the mixing valve inlets.
9. Inlet and outlet threaded joint connections
should be made with PTFE tape or liquid
sealant. Do not use oil-based, non-setting
jointing compounds.
10.To eliminate pipe debris it is essential that
supplypipesarethoroughlyushedthrough
before connection to the mixing valve.
Outlet Position / Reversed Inlet
Supplies
Rada 215-t3 oem, 215 dk, 215-t3 dk, 222 dk and
222-t3 dk models only:
These models are readily adaptable for rising or
fallingpipework;at-facedunionconnectors(not
suppliedonallmodels)allowthevalvebodyto
acceptavarietyofpipeworkcongurations,and
to be reversed or inverted as appropriate.
215-t3 c and 215-t3 zc models only:
These models are supplied with inlet connections
conguredhot-left, cold- right,andtop outlet
as standard. It is essential that the inlet supplies
correspond with the markings on the thermostatic
cartridge. Should the existing hot and cold
pipework make this conguration inconvenient,
or a bottom outlet position be required, the valve
inlets or outlet can be reversed, as detailed
below. If both the outlet and inlet positions
require reversing, it is easier to simply rotate the
complete mixing valve 180°, and then reposition
the temperature knob or cap.
Outlet Reversal should be done prior to
installation of the mixing valve body. Rotate the
body 180° so that the outlet is in the opposite
direction, then follow the procedure for reversing
the cartridge .
Reversed connections can be altered before or
after mixing valve installation.
Reversing the Cartridge
1. If the mixing valve has already been installed,
isolatethesuppliesandopenanoutlettting
to release pressure and to assist the draining
of residual water.
2. Remove the temperature knob or locking cap,
using a 3 mm hexagonal key.
Note! Do not remove the temperature hub.
3. With the removal clip in place, unscrew the
head nut using a 35 mm wrench, this will begin
to draw the thermostatic cartridge out of the
body and release the indicator trim (adjustable
models).

91057616-W2-J
4. Removetheindicatortrim(adjustablemodels)
and pull the thermostatic cartridge free of the
valve body.
5. Rotate the thermostatic cartridge 180°, which
reverses the position of the cartridge hot and
cold inlets.
6. Carefully push the thermostatic cartridge back
into the valve body, checking that the two
cartridge inlet port seals remain in place, and
locate the cartridge lugs into the body slots.
Important! Make sure that the markings on
the cartridge correspond with the hot and cold
inlet pipework.
Note! The red and blue markings on the
cartridge will now not correspond with the
body markings, so to avoid future confusion
remove the red and blue stickers from the
valve body.
7. Carefully align and then tighten the head nut,
do not over-tighten (max torque 2.5 N/m - 1.85
lbfft).
8. Complete the installation, or, if the mixing
valve body has already been installed, restore
the hot and cold supplies and check for any
leaks.
9. If the temperature hub has been removed or
if the maximum temperature needs resetting,
check, and if necessary refer to section:
'Commissioning'.
10.Align and ret the indicator trim (adjustable
models)andretandsecurethetemperature
knob or locking cap so that the markings will
be visible to the user.
Rada 215-t3 bc models only:
This model is supplied with inlet connections
congured hot - left, cold-right, and top outlet
as standard. It is essential that the inlet supplies
correspond with the markings on the thermostatic
cartridge. Should the existing hot and cold
pipework make this conguration inconvenient,
or a bottom outlet position be required, the valve
inlets or outlet can be reversed, as detailed
below.
Outlet Reversal should be done prior to
installation of the mixing valve body.
Reversed connections can be altered before or
after mixing valve installation.
Reversing the Outlet Position
1. Remove the outlet nipple using a 12 mm
hexagonal wrench.
2. Remove the outlet blanking plug using a 12
mm hexagonal wrench.
3. Screw the outlet nipple, complete with 'O' seal
into the bottom hole previously blanked and
tighten.
4. Screw the outlet blanking plug, complete with
'O' seal, into the top hole and tighten.
Reversing the Cartridge
If the mixing valve has not yet been installed
follow instructions 5 to 10, otherwise follow
instructions 1 to 15.
1. Unscrew the grubscrew using a 2.5 mm
hexagonal key and pull off the temperature
knob.
2. Carefully unclip the concealing plate from the
backplate.
Note! Use a screwdriver in the bottom cutout
to assist separation.

10
1057616-W2-J
3. Unscrew the two backplate screws and remove
the backplate from the mixer.
4. Using a 10 mm hexagonal key turn the integral
isolators90°anti-clockwisetoshutoffthehot
and cold water supplies, and open an outlet
tting to release pressure and to assist the
draining of residual water.
5. With the removal clip in place, unscrew the
head nut using a 35 mm wrench, this will begin
to draw the thermostatic cartridge out of the
body.
6. Pull the thermostatic cartridge free of the valve
body.
Caution! Some residual water may be
released.
7. Rotate the thermostatic cartridge 180°, which
reverses the position of the cartridge hot and
cold inlets.
8. Carefully push the thermostatic cartridge back
into the valve body, checking that the two
cartridge inlet port seals remain in place, and
locate the cartridge lugs into the body slots.
Important! Make sure that the red and blue
markings on the cartridge correspond with the
hot and cold inlet pipework.
Note! The red and blue markings on the
cartridge will now not correspond with the
body markings, so to avoid future confusion
remove the red and blue stickers from the
valve body.
9. Carefully align and then tighten the head nut,
do not over-tighten (max torque 2.5 N/m - 1.85
lbfft).
10.Complete the installation, or, if the mixing valve
body has already been installed, continue with
instructions 11 to 15.
11.Turntheintegralisolators90°clockwisetoturn
on the hot and cold water supplies.
Integral Isolator (shown
in the ‘on’ position)
12.Align the slots in the ‘black’ knob retainer with
the lugs on the ‘white’ hub top and secure the
backplate to the mixing valve with the two
backplate screws.
‘White’HubTop
Backplate
Backplate
Screws
AligntheHub
with the slots on
the Backplate
13.The maximum temperature may need to be
reset, check, and if necessary refer to section:
'Commissioning'.
14.Clip the concealing plate onto the backplate
with the cutout at the bottom.
15.Retandsecurethetemperatureknobsothat
the markings will be visible to the user.
Temperature
Knob
Blanking Plug
Grubscrew

11 1057616-W2-J
Rada 215-t3 c
1. The inlet elbows are positioned to accept
falling supplies. Should the installation require
rising or rear entry supplies then the elbows
will need rotating:
(a) Loosen the elbow grubscrew using a
2.5 mm hexagonal key.
(b) Pull the elbow away from the valve body
andretinthedesiredposition,re-tighten
the grubscrew.
Note! Make sure that the ‘O’ seal is
correctlytted.
2. Loosen the backplate grubscrews using
a 2.5 mm hexagonal key and pull off the
backplate.
3. For solid walls drill the holes for the backplate
with a 6 mm drill and insert the wall plugs. For
othertypesofwallstructurealternativexings
mayberequired(notsupplied).
4. For rear entry supplies: drill the holes for the
supply pipes at 153 mm centres and recess the
wall to allow for the concealing plates, Ø32 mm
x 10 mm deep.
Note!Depthmustbesufcienttopreventthe
concealing plates fouling on the plumbing
elbows.
5. For falling supplies: Mark the pipe positions
on the ceiling and set the 33 mm centres from
thenishedwall.
For rising supplies: Mark the pipe positions
andsetthe33mmcentresfromthenished
wall.
33 mm
6. Fit the supply pipework (Hot - Left, Cold -
Right).
7. For 15 mm compression inlet or outlet
connections: t the compression nuts and
olives to the pipework.
For ½” BSP union inlet or outlet connections:
ttheat-facedinserts,pressinrmly.
Ø32 mm x 10 mm depth for
Concealing Plates
Apply Silicone Sealant
Backplate
Concealing Plates
12 mm from
nishedwall
surface
Hot
Cold
153 mm
10 mm minimum
between elbow
andnishedwall
surface
Ø 32 mm
12 mm
Elbow

12
1057616-W2-J
8. Mount the backplate securely to the wall
surface, with the grub screws positioned
at the bottom, using the screws provided if
appropriate.
9. Caution! It is essential at this point
that the supply pipework is thoroughly
ushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
10.Retthevalveontothebackplateandtighten
the grubscrews.
11. Connect the hot and cold supply pipes and
tighten the compression nuts.
12.Connect the outlet pipework, leaving enough
pipe through the wall to temporarily cap off.
13.Refer to section: ‘Commissioning’.
Rada 215-t3 bc (Rear Fixing into
Solid Walls or Stud Partitions)
1. Determine the route for the hot and cold
supply pipework and for the outlet pipework.
WhenconnectingtoBIVShowerFittingsitis
recommended that the outlet be positioned
above and to one side of the mixer. This is to
preventtheexiblehosefromobstructingthe
shower controls.
2. Remove the two shroud screws (retain for later
use)andremovethebuilding-inshroudfrom
the mixer.
3. Determine the position of the mixer and draw
around the building-in Shroud.
4. Mark the routes for the hot and cold supply
pipework (Hot - Left, Cold - Right)and for
the outlet pipework.
Note!(ifapplicable)Theoutletelbowshould
be sited above the mixer and on the right or
left, as site dictates.
Outlet Pipe BIR
Outlet Pipe BIV Outlet Pipe BIV
Cold InletHotInlet
Thermostatic
Mixer
Alternative Pipe
Layouts
5. Cut away the plasterboard and/or brick work
to the required depth.
Important! This depth ‘X’ will depend on the
nishedwallthicknesse.g.tilesorfaciaboard.
Refer to the table for this measurement.
For stud partitions depth ‘X’ refers to the
distance from the rear mounting e.g. timber
noggin,tothefrontofthewall(beforetiling).
FinishedWall
Surface
FinishedWall
Thickness
Depth ‘X’
Rear Mounting (Solid
WallorTimberNoggin)

13 1057616-W2-J
12.Remove the two shroud screws (retain for later
use)andremovethebuilding-inshroudfrom
the mixer.
13.Makesurethattheolivesaretted,connect
the hot and cold supply pipes and tighten the
compression nuts.
14.Connect the outlet pipework, leaving enough
pipe through the wall to temporarily cap off.
15.Turn on the water supplies and check for leaks.
16.Attach the building-in shroud to the mixer using
the two shroud screws removed earlier.
17.Using the ‘Finished Wall Indicator’ on the
building-inshroudasaguide,nishthewall,
e.g. tiles.
Caution!Makesurethatthenishedwallis
within the maximum and minimum limits and to
anevendepth(nogreaterthan2mmvariation)
orthecontrolcomponentswillnottcorrectly.
6. Retthebuilding-inshroudtothemixer.
7. Make sure that the mixer is level and central
in the hole, and square to the nished wall
surface(orthecontrolcomponentswillnott
correctly),thenmarkthepositionsofthethree
xingscrewholesonthewall.
8. For solid walls drill three 6 mm holes for the
wall plugs.
9. Fit the hot and cold supply pipework (Hot -
Left, Cold - Right).
10.Caution! It is essential at this point
that the supply pipework is thoroughly
ushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
11. Insert the wall plugs and attach the mixer to
the wall with the screws provided.
Note! For stud partition installations alternative
xingsmayberequired(notsupplied)toxthe
mixer to the rear face of the wall cavity or to a
timber noggin.
FinishedWallThickness
(e.g.tileandadhesive)
WallCutoutDepth
‘X’
4 mm 81 - 63 mm
6 mm 79-61mm
8 mm 77-59mm
10 mm 75 - 57 mm
12 mm 73 - 55 mm
14 mm 71 - 55 mm
16 mm 69-55mm
18 mm 67 - 55 mm
20 mm 65 - 55 mm
22 mm 63 - 55 mm
24 mm 61 - 55 mm
Screws
Outlet Pipe to
Fittings
HotSupply
Cold Supply
Minimumnished
wall surface
Finished Wall F9802
Min
Max
Maximumnished
wall surface

14
1057616-W2-J
18.Remove the two shroud screws (retain for later
use)andremovethebuilding-inshroud.
19.Fit the concealing plate and control assembly,
refer to section: ‘Control Assembly’.
Rada 215-t3 bc (Panel Fixing using
Securing Brackets)
Note! For laminated panels the mixer must be
positioned from the rear of the panel.
Panel thickness must be between 4 and 12 mm
(if a thicker panel is used, it will be necessary
to recess the securing brackets into the rear of
thepanel).
Important! Make sure that there is a minimum
clearance of 64 mm behind the laminated panel
to house the mixer.
1. Refer to section: ‘Rada 215-t3 bc (Rear Fixing
into Solid Walls or Stud Partitions)’ and
follow instructions 1 to 4.
2. Carefully cut out the laminated panel.
3. Fit the securing brackets to the mixer.
Important! Make sure that the correct holes
are used, otherwise the backplate cannot be
tted.
4. Position the mixer on the front of the panel,
make sure that it is level and central in the
hole,thenmarkthepositionoftheM5xing
holes.
Important! Make sure that the correct holes
areused(refertoillustration).
M5FixingHole
Backplate
SecuringHoles
5. Drill the two 5.5 mm holes for the fixing
positions(countersinktheholesatthefront).
6. Fit the hot and cold supply pipework (Hot -
Left, Cold - Right).
7. Caution! It is essential at this point
that the supply pipework is thoroughly
ushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
8. Secure the mixer with the M5 x 40 screws as
shown.
M5 x 40 mm
Fixing Screws
9. Makesurethattheolivesaretted,connect
the hot and cold supply pipes and tighten the
compression nuts.
10.Connect the outlet pipework, leaving enough
pipe through the wall to temporarily cap off.
HotSupply
Cold Supply
Outlet Pipe
to Fittings
11. Turn on the water supplies and check for leaks.
12.Fit the concealing plate and control assembly,
refer to section: ‘Control Assembly’.

15 1057616-W2-J
Rada 215-t3 bc (Solid Wall or Stud
Partitions using Securing Brackets)
1. Refer to section: ‘Rada 215-t3 bc (Rear Fixing
into Solid Walls or Stud Partitions)’ and
follow instructions 1 to 4.
2. Remove the plasterboard and/or brick work to
a minimum depth of 62 mm.
62 mm Min
24 mm Max
FinishedWall
4 mm Min
FinishedWall
FinishedWall
Surface
Securing
Bracket
3. Fit the securing brackets to the mixer with the
bracket securing screws.
Important! Make sure that the correct holes
are used, otherwise the backplate cannot be
tted.
Backplate
SecuringHoles
Countersunk
FixingHole
4. Make sure that the mixer is level and mark the
positionsforthecountersunkxingholeson
the wall.
5. For solid walls drill two 6 mm holes for the wall
plugs.
6. Fit the hot and cold supply pipework (Hot -
Left, Cold - Right).
7. Caution! It is essential at this point
that the supply pipework is thoroughly
ushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
8. Remove the wall brackets from the mixer.
9. Makesurethattheolivesaretted,connect
the hot and cold supply pipes and tighten the
compression nuts.
10.Retthewallbracketstothemixer,tthewall
plugs and x the mixer to the wall with the
screws provided.
Note! For stud partition installations alternative
xingsmayberequired(notsupplied).
11. Connect the outlet pipework, leaving enough
pipe through the wall to temporarily cap off.
Screws
Outlet Pipe
to Fittings
HotSupply
Cold Supply
12.Turn on the water supplies and check for leaks.
13.Attach the building-in shroud to the mixer using
the two shroud screws removed earlier.
14.Using the ‘Finished Wall Indicator’ on the
building-inshroudasaguide,nishthewall,
e.g. tiles.
Caution!Makesurethatthenishedwallis
within the maximum and minimum limits and to
anevendepth(nogreaterthan2mmvariation)
orthecontrolcomponentswillnottcorrectly.

16
1057616-W2-J
Minimumnished
wall surface
Finished Wall F9802
Min
Max
Maximumnished
wall surface
15.Remove the two shroud screws (retain for later
use)andremovethebuilding-inshroud.
16.Fit the concealing plate and control assembly,
refer to section: ‘Control Assembly’.
‘White’HubTop
Backplate
Backplate
Screws
AligntheHub
with the slots on
the Backplate
4. Clip the concealing plate onto the backplate
with the cutout at the bottom.
5. Retthetemperatureknobwiththegrubscrew
at the bottom and secure, ret the blanking
plug.
6. Before using the shower, refer to section:
'Commissioning'.
Temperature
Knob
Blanking Plug
Grubscrew
215-t3 bc Control Assembly
1. Remove the blanking plug, unscrew the
grubscrew using a 2.5 mm hexagonal key and
pull off the temperature knob.
2. Carefully unclip the concealing plate from the
backplate.
Note! Use a screwdriver in the bottom cutout
to assist separation.
3. Align the slots in the ‘black’ knob retainer with
the lugs on the ‘white’ hub top and secure the
backplate to the mixing valve with the two
backplate screws.

17 1057616-W2-J
Rada 215 dk, 215-t3 dk, 222 dk,
222-t3 dk and 215-t3 oem
The mixing valve is supported by the inlet and
outlet pipework only, which must be suitably and
securely fastened.
Inlets and outlet are external BSP union, intended
toaccept at-facedconnectors(see note).Itis
recommended that such union connections are
used, so that the mixing valve body can be readily
removed from its pipework for maintenance
purposes.
Note! Flat faced connectors are not supplied with
215-t3 oem, 215 dk or 222 dk models.
1. Threeadditionalconnectors(seenoteabove)
are supplied (2 elbows, 1 straight, terminating
in compression connections), which are
interchangeable to the inlets and outlet.
Selectthemostappropriatecongurationfor
the intended installation, and, with the nylon
washers in place, secure to the mixing valve
body.
2. Fit and secure the supply pipework.
3. Important! Flush through the hot and cold
supplies thoroughly before connection to
mixing valve.
4. Connect the inlet and outlet pipework to the
valve.
Note! Make sure that the hot and cold supplies
have been connected to the correct inlets, and
that all connections are watertight.
5. Refer to section: ‘Commissioning’.
Rada 215-t3 zc
Note! Rada offset connectors and offset pipe
concealing plates are not supplied with this mixing
valve, but are available separately as optional
accessories.
1. Check that the hot and cold supplies are piped
to the correct inlet positions. Supplies (pipe
centresbetween128-178mm)mustterminate
in 1/2" BSP internal sockets to within 3 mm,
aboveorbelow,thenalwallsurface.
Note! It is essential that inlet supply sockets
are parallel, and square with wall surface.
2. Join offset connectors and screw into sockets
so that faced edge is 34 mm proud of nal wall
surface(refertoillustration).Shorten1/2"BSP
external thread, if necessary.
34 mm
3/4" Union
Thread
1/2" Thread
(shortenifnecessary)
3. Screw pipe concealing plates onto offset
connectors.
4. Caution! It is essential at this point
that the supply pipework is thoroughly
ushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
5. Withthenylonwashersinposition,offerupthe
mixing valve and tighten the union nuts onto
the offset connectors.
6. Connect the outlet pipework:
6.1 for 15 mm compression pipework outlet
connection:tthecompressionnutand
olive(refertoillustration).
6.2 for1/2"BSPunionoutletconnection:t
at-facedinsert,pressinrmly(referto
illustration).

18
1057616-W2-J
7. Make sure that the hot and cold supplies have
been connected to the correct inlets, and that
all connections are watertight.
8. Refer to section: ‘Commissioning’.
OPERATION
For adjustable temperature models adjustment of
the blend temperature from the preset maximum
to cold is achieved by clockwise rotation of the
temperature knob.
For locked temperature models no user adjustment
is intended.
Controlofowisviaaseparateoutletvalve(s),
refer to section: ‘Specications’.
Adjustable Temperature Models Only
Hot Cold
COMMISSIONING
Commissioning must be carried out in accordance
with these instructions, and must be conducted by
designated,qualiedandcompetentpersonnel.
Exercising the Thermostat
Thermostatic mixing valves with wax thermostats
are inclined to lose their responsiveness if not
used. Valves which have been in storage, installed
but not commissioned, or simply not used for
some time should be exercised before setting the
maximum temperature or carrying out any tests.
A simple way to provide this exercise is:
(a) Make sure that the hot and cold water
are available at the valve inlets, and the
outlet is open.
(b) Move the temperature control rapidly from
cold to hot and back to cold several times,
pausing at each extreme.
Maximum Temperature
Note! For Type 3 healthcare installations the
maximum blend temperature is determined by
the application, refer to the 'TMV3 Requirements
Manual'.
The maximum blend temperature obtainable by
the user should be limited, to prevent accidental
selection of a temperature that is too hot.
All Rada thermostatic mixing valves are fully
performance tested and the maximum temperature
is preset to approximately 41°C (222 models -
44°C) under ideal installation conditions at the
factory.
Site conditions and personal preference may
dictate that the maximum temperature has to be
reset following installation.
This mixing valve is provided with two methods
of temperature setting, an adjustable temperature
control knob which allows the user to select the
blend temperature between ambient cold up
to a preset maximum, or if considered more
appropriate,alockedcapcanbetted,allowing
no user adjustment.

19 1057616-W2-J
Maximum Temperature Setting
Check that an adequate supply of hot water is
available at the hot inlet of the mixing valve.
The minimum temperature of the hot water
must be at least 12°C above the desired blend,
however during resetting this should be close
to the typical storage maximum to offset the
possibility of any blend shift due to uctuating
supply temperatures.
Check that both inlet isolating valves are fully open
andtheinletltersareclean.
Temperatures should always be recorded using
a thermometer with proven accuracy.
All models except Rada 215-t3 bc:
1. Remove the temperature knob and indicator
trim or locking cap using a 3 mm hexagonal
key.
2. Pull off the temperature hub.
3. Using the temperature hub, rotate the spindle
until the required maximum blend temperature
is obtained at the discharge point (rotate
clockwise to decrease temperature).
If resistance is felt do not use force to turn
any further, as this can damage the internal
parts.
4. Once the desired maximum blend temperature
has been achieved, refit the hub without
disturbing the spindle.
For adjustable temperature position the hub
such that the lug is against the side of the
stop on the cartridge face, thus preventing
anticlockwise rotation past the maximum
temperature stop.
For locked temperature position the hub such
that the lug is between the stops on cartridge
face, thus preventing any rotation.
Hub
Hub
Spindle
Spindle
Stop
Stop Locking Cap
Indicator Trim
TemperatureKnob
Locking Screw
Locking Screw
5. Check that blend temperature has not
altered.
6. For adjustable temperaturerettheindicator
trim and temperature knob and secure with the
locking screw.
For locked temperature retthelockingcap,
engaging the cap guides into the body slots
and secure with the locking screw.
Rada 215-t3 bc models only:
1. Remove the blanking plug, unscrew the
grubscrew using a 2.5 mm hexagonal key and
pull off the temperature knob.
2. Rotate the ‘red’ locking ring anti-clockwise until
the ‘black’ knob retainer is released.
3. Remove the ‘black’ knob retainer.
‘Black’Knob
Retainer
‘Red’ Locking Ring
Temperature
Knob
Grubscrew
Blanking
Plug
4. Unscrew the hub retaining screw and remove
the ‘white’ hub top and ‘blue’ hub.
5. Rotate the spindle until required maximum
blend temperature is obtained at discharge
point (clockwise = decrease temperature).
Note! Use the ‘blue’ hub to assist.
If resistance is felt do not use force to turn
any further, as this can damage the internal
parts.

20
1057616-W2-J
HubRetaining
Screw
‘White’HubTop
‘Blue’Hub
Spindle
6. Once the desired maximum blend temperature
hasbeenachieved,retthe‘blue’hubwithout
disturbing the spindle.
For adjustable temperature position the
‘blue’ hub such that the lug is against the
side of the stop on the cartridge face, thus
preventing anticlockwise rotation past the
maximum temperature stop.
For locked temperature position the ‘blue’
hub such that the lug is between the stops on
cartridge face, thus preventing any rotation.
7. Check that blend temperature has not
altered.
8. Retthe‘white’hubtopandsecurewiththe
hub retaining screw.
9. Turn the ‘red’ locking ring so that the lugs are
in the vertical position.
10.Align the slots in the ‘black’ knob retainer with
thelugsonthe‘white’hubtopandretintothe
‘red’ locking ring.
11.Holdthe‘black’knobretainerstillandrotate
the ‘red’ locking ring clockwise to lock in
position.
12.Retthetemperatureknobwiththegrubscrew
at the bottom and secure, ret the blanking
plug.
2. Periodic attention is given, when necessary, to
maintain the product in good functional order.
The Rada 215 and 222 range of thermostatic
mixing valves are designed for the minimum of
maintenance in normal use. The only serviceable
partsaretheinletlterswhichshouldbechecked
and cleaned every 12 months. If a malfunction
occurs with the thermostatic cartridge then this
will necessitate a complete cartridge replacement.
Note! The cartridge contains no internally
serviceable parts.
If you require a Rada trained engineer or agent,
refer to section: ‘Customer Care.
Disinfection
In applications where system chemical disinfection
is practised, chlorine can be used (calculated
chlorineconcentrationof50mg/l(ppm)maximum
in water, per one hour dwell time, at service
interval frequency). Such procedures must
be conducted strictly in accordance with the
information supplied with the disinfectant and
with all relevant Guidelines/Approved Codes of
Practice.
If in any doubt as to the suitability of chemical
solutions,refertoKohlerMiraLtd,orLocalAgent.
Lubricants
Silicone based lubricants must only be used on
the rubber seals.
Caution! Oil based or other lubricant types may
cause rapid deterioration of seals.
Planned Maintenance
Important! For Type 3 Valves use the In-Service
tests given in the TMV3 Requirements Manual. In
the absence of any other instruction or guidance
on the means of determining the appropriate
frequency of in-service testing, the procedure
contained within this guide (taken from Annex F
ofD08)shouldbeused.
For other commercial installations it is
recommended that the correct blend setting is
checked every 6 months and that the In-Service
Test procedure is followed every 12 months.
MAINTENANCE
General
This Product is precision engineered and should
give continued safe and controlled performance,
provided:
1. It is installed, commissioned, operated and
maintained in accordance with manufacturers
recommendations.