Rinnai Pure Control Instruction Manual

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Installaon & User
Manual
Pure Control
Auto Pasteurisaon Unit
Important.
Read these instrucons carefully before aempng installaon or use of this
appliance. All work must be carried out by competent persons.

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CONTENTS
Crical Informaon And Warnings Page 3
Funconality of The Pure Page 4
Components Page 5
System Schemac Page 6
Installaon Instrucons Page 7 - 10
Programing Instrucons Page 11 - 16
Contents

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IT IS IMPORTANT THAT THIS SYSTEM IS NOT USED IF THERE IS THE
POSSIBILITY THAT THE BUILDING IS OCCUPIED DURING THE
PASTEURISATION PERIOD.
RINNAI RECOMMEND THAT WARNING NOTICES STATING THE
WATER FROM THE TAPS COULD BE HOT.
THESE INSTRUCTIONS MUST BE FULLY READ, UNDERSTOOD AND FULLY
COMPLIED WITH. FAILURE TO DO SO COULD LEAD TO PROPERTY
DAMAGE AND OR SERIOUS PERSONAL INJURY.
THE FITTING OF THIS APPLIANCE DOES NOT EXEMPT THE PROPERTY
OWNER OR LANDLORD FROM NOT FOLLOWING THE DUTY OF CARE AS
SPECIFIED WITHIN HEALTH AND SAFETY EXECUTIVE ACOP L8 CONTROL
OF LEGIONELLA BACTERIA IN WATER SYSTEMS
THIS UNIT SHOULD ONLY BE INSTALLED BY A QUALIFIED PERSON.
THE USE OF THIS UNIT FOR ANY PURPOSE OTHER THAN FOR WHAT IT IS
DESIGNED FOR, WILL NEGATE ANY WARRANTY.
RINNAI ACCEPT NO LIABILITY FOR ANY THIRD PARTY CLAIM THROUGH
FAILURE TO FOLLOW THESE INSTRUCTIONS IMPLICITLY.
Crical Informaon And Warnings

4
FUNCTIONALITY OF THE PURE
This System and Instrucons must be used and applied in conjuncon
with Health and Safety Execuve ACOP L8 The Control of Legionella
Bacteria as well as any Local by-Laws
The Rinnai PURE system is designed to allow a domesc hot water system ed
with a secondary return system to operate during the buildings occupancy at a safe
temperature whilst also allowing the temperature to be raised during periods of
un-occupancy to reduce the growth of legionella bacteria.
The Pure Controller works in conjuncon with the MC91 controller and the
temperature seng of the dipswches on the water heater. The secondary return
pump is wired through the Pure to allow it to turn the pump on and o.
The Pure has 4 dierent schedule sengs that can be programmed in to it which
can be set over 7 days and it also has a cool down period which can be set from 15
minutes to 300 minutes. The 4 dierent sengs are as follows
Occupancy On—Building Occupied
Occupancy O– Building Unoccupied
Pasteurisaon On– Pasteurisaon Starts
Pasteurisaon O—Pasteurisaon Finished.
The cool down period does not let you programme an occupied seng unl aer
the desired duraon that is set.
The Pure also ulises and Temperature sensor which is to be ed directly on to
the return pipework or the inlet leg to the water heater. This temperature can be
altered when the building is occupied and when it reaches its set pump will turn the
secondary pump o.
NOTE IT IS THE INSTALLERS RESPONSIBILITY TO ENSURE THAT THE
SYSTEM HAS BEEN REDUCED TO A SAFE TEMPERATURE PRIOR to THE
RE-OCCUPANCY, FAILURE TO DO SO COULD LEAD TO PERSONEL INJURY.
Funconality of The Pure

5
OPERATIONAL COMPONENTS
Components
Pure Controller
Temperature Sensor
MC91 Controller — Sold Separately

6
OPERATIONAL COMPONENTS
System Schemac

7
OPERATIONAL COMPONENTS
Installaon Instrucons
Specicaon:
Power Supply: 240V AC
Temperature Sensor: Rinnai Custom
Communicaons: BACnet MS/TP
Relay Rang: 5amp Max @ 240V
Housing Dimensions 180mm (h) x 182mm (w) x 63mm (d)

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OPERATIONAL COMPONENTS
Installaon Instrucons
The following items are required for the installaon but are not supplied by Rinnai UK. These
items are common and can be obtained through any merchants or hardware store.
 3 Core Flex 1.5mm 5amp rated (length to be determined by installer)
 Fixing screws and wall plugs to mount Pure Controller
FIG 2
FIG 1
 Remove front panel of Pure Controller
 With a at head screwdriver pull down the catch
circled in FIG 1 and remove the controller body
 Locate the knock out holes on the controller
housing (FIG 2) and proceed to make holes for
xing screws
 Place the controller in desired locaon near to
the heater(s) and mark out the holes to drill.
Drill the holes and x the housing to the wall
using appropriate xings (Fixings not supplied)

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OPERATIONAL COMPONENTS
Installaon Instrucons

10
OPERATIONAL COMPONENTS
Installaon Instrucons
 Wire the temperature sensor using Belden 9841 (0.2mm2) Twisted Pair with Drain wire and foil wrap or equiva-
lent. Must Be suitable for RS485 Standard. Connect to the Temperature senor connections.
 Fit the Sensor to either the return pipework before it connects on to the mains in or if this is too far then it can be
fitted on to the cold supply in to the heater. Please note that this sensor must be in direct contact with the pipe
and not fitted on top of lagging.
 Wire the Rinnai MC91 through Relay 1. The controller should be connected to C and NC on the controller. You
can now connect the controller on to the Rinnai water heater. (These two connections are not polarity conscious)
 Wire the live for the Secondary Return/Recirculation Pump through points C and NO on Relay 2.
 Wire in the 240v Mains supply
Operation Sequence
Controller Pump
Occ - C-NC - ON C-NO - ON
UnOcc - C-NC - ON C-NC - OFF
PasOn - C-NO - OFF C-NO - ON
PasOff - C-NC - ON C-NC - OFF
Please note that during the pasteurisation cycle the system must be run for a minimum of one hour ONLY when the
system reaches temperature. The time programmes MUST be calculated or tested before the system can be used.
You can programme another Occ to allow the system temperature to drop by using the system heat loss. The water will
simply pass through the Rinnai without firing it up as the water will be above the set temperature on the controller. The
Rinnai controller must be set at the desired temperature for a 24 hour period to allow this to be saved in to the PCB.

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OPERATIONAL COMPONENTS
Programing Instrucons
Mode Selecon opons:
Schedule:
The PURE controller will operate to the programmed schedule that has been set within the controller
Override ON:
The PURE controller will be overridden on to an occupied condion for the override me set in the
maintenance menu. During this mode the pasteurisaon cycle will not operate.
To set or edit the override me press all four buons on the PURE controller to enter the maintenance
menu, navigate to Global Seng > Override ON. The Override ON seng is adjustable from 15-300
minutes in 15 minute steps.
Temporary Override:
The PURE controller will be OFF unl the next scheduled Occupancy ON or Pasteurisaon ON period
Permanent Override:
The PURE controller can be set to run in 3 dierent modes during Permanent Override operaon:
1. None – Both Occupied and Pasteurisaon control is inhibited.
2. OCC – The PURE controller will always be overridden ON and will operate to the occupied set
point. Pasteurisaon will not run in this mode.
3. Pas – If set in the schedule, only the pasteurisaon will run when called for.
To set or edit the Permanent Override sengs, press all four buons on the PURE controller to enter
the maintenance menu, navigate to Global Seng > Override O.

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OPERATIONAL COMPONENTS
Programing Instrucons
Edit Default Set Points:
To edit the default set points for the Occupancy and Pasteurisaon cycles press all four buons on the
PURE controller to enter the maintenance menu, navigate to Global Seng and select either the ‘Temp
Occ SP’ to adjust the occupied default set point or ‘Pas SP’ to adjust the pasteurisaon set point.
Time Schedule set up:
To enter the me scheduling press the top right buon on the PURE controller. The below screen will
show:
Scheduler
1Time Update
2DST
3Set Date and Time
4Set Event
5CAL-O
6CAL-On
7Cool Down
8Return to previous
Time Update (Manual / System):
This allows the user to set the date manually (manual) or over the network (system).
DST (Yes/No):
This allows the user to select Daylight Saving Time. DST is only available when manually updang the me.
Set Date and Time:
The user can set the correct me and date.
Set Event:
The user can set their events within the me schedule. The events include:
Occupancy ON – When an occupied period will begin.
Occupancy OFF – When an occupied period will end.
Pasteurisaon ON – When a pasteurisaon period will begin.
Pasteurisaon OFF – When a pasteurisaon period will end.
Note: A pasteurisaon period cannot be set between an occupied ON and occupied OFF period. An occupancy
ON cannot be set unl aer a Pasteurisaon OFF + Cooling down period.
CAL-O
CAL-On
Cool Down:
This is the minimum me the controller will allow between Pasteurisaon Cycle and an Occupied Cycle. This
is adjustable by the user and should be set before any me scheduling events are programmed. If the cool
down period is edited all me programmed events will be reset.

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Programing Instrucons
Seng a scheduled event:
To set an event, enter the schedule screen and select Set Event. The following menu will appear. Use the
le buons to highlight line 1 ‘Weekly Schedule’, and then press a mode buon on the right.
Set Event
1Weekly Schedule
2Excepons
3Return to Previous
Weekly Schedule
1Monday
2Tuesday
3Wednesday
4Thursday
5Friday
6Saturday
7Sunday
9Return to Previous
The following menu with the Weekly Schedule day list will be displayed
In the Weekly Schedule menu, use the temperature adjust buons on the le side to scroll through to
the day required. With the day required highlighted, press the mode buon on the right hand side. The
following day menu with seng opons will appear (example shows Monday is selected).
Monday
1Copy from None
2Add Entry
3Clear All
4Return to Previous
Add Entry:
This allows the user to add a time scheduled event. In the selected Day menu select line 2 ‘Add Event’
and press the mode button to view the Edit Event Menu.
Edit Event
1Time 08:30
2Value Occ / UnOcc / PasON / PasOFF
3Delete and Return
4Conrm and Return
5Return to Previous
In the Edit Event menu, to set a me to correspond with an event select line 1 and use the temperature
up and down arrows on the le hand side of PURE controller to highlight the Time gure you want to
change. Once highlighted, use the right hand side mode buons to adjust the me (hours then
minutes).

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Programing Instrucons
Once the me is entered, highlight line 2 ‘Value’ and select your event (occupied, unoccupied, pasteuri-
saon on or pasteurisaon o). Once entered use the temperature adjust buons to scroll to Conrm
Entry and press the mode buons to save the entry made.
Aer an ON period is set and conrmed, the user can now set an OFF me. Click Add Entry again and use
the right hand side mode buons to adjust the me (hours then minutes) again.
Once the me is entered, using the le buons scroll and highlight line 2 ‘Value’. Now with the mode
buons enter OFF (which is the end of the programmed ON period). Once entered use the temperature
adjust buons to scroll to Conrm and Return to save the entry made.
It is not possible to set an Occupancy ON within a Pasteurisaon cycle or a Pasteurisaon ON within an
occupied cycle. The Occupancy ON period can only be set aer the Pasteurisaon cycle has nished and
the cooling down period (set in the maintenance screens) has ran.
The completed programmed ON and OFF period is now set. You can enter up to 6 x On/O events for
each day of the week.
Once all event schedules for the day have been added select Conrm Entry and Return to exit this menu.
Note: If a day schedule is set and is to be repeated on other days then you can use the Copy From feature
which automacally copies across a day’s schedule to another day. See below.
Copy from:
This allows the user to copy exisng day schedules to the day that has been selected.
Highlight line 1 ‘Copy from’ then use the mode buon on the right to select the opon. The following
menu with seng opons will appear (example shows Monday is selected).
Monday
1Copy from Tuesday
2Conrm Copy
3Return to Previous
With the le hand temperature buons highlight line 1 ‘Copy From’ then with the right hand mode
buons scroll through the days unl the desired day is shown. With the le hand temperature buons
now select ‘Conrm Copy’ then press the mode buons to conrm.
This acon copies all the me scheduled events from one day to another and is useful if the me sched-
ules are the same for each day of the week.
Once ‘Copy From’ and ‘Conrm Copy’ acons are complete, with the le hand buons select ‘Return to
Previous’ to connue the entry of Time Schedules.

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Programing Instrucons
To delete a me scheduled event:
 Select the day required in the Weekly menu
 Select the me event in the Day menu
 Select Delete Entry in the Edit Event menu and press the mode buon.
 To delete an Occupancy or Pasteurisaon On/O cycle, both the ON and OFF events for the cycle
need to be deleted.
To delete the me schedules for a whole day.
 Select the day required in the Weekly menu
 Select line 3 Clear All
 Press the mode buon to clear all me events for the selected day.
Monday
1Copy from None
2Add Entry
3Clear All
4Return to Previous
Excepons:
Excepons allow the occupant to set specic days or date ranges that they do not wish the controller to
follow the me schedules that have been set. This is parcularly useful for holiday periods which can
be pre-programmed.
In the main Scheduling menu select Set Event and the following menu appears:
Excepons can be set for a specic date or date range. For more detailed informaon on the
excepons please refer to the PURE user screen document.
Set Event
1Weekly
2Excepons
3Return to Previous

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Programing Instrucons
BACnet Communicaon Sengs:
The Rinnai PURE controller is capable exposing data over a BACnet MS/TP network. It is important that
each device has the correct network sengs. Follow the below instrucons to do this:
NOTE: Incorrect network sengs will result in a conict of communicaons and prevent the Gateway
from operang correctly.
1. Press and hold all 4 buons on the PURE controller for approx. 5 seconds. The maintenance
screen will show.
Maintenance Menu
Input Status
Output Status
Scheduler
Global Sengs
User Interface
Setup Menu
Exit Menu
2. Using the le hand buons scroll down to the Setup Menu opon. Once highlighted, select this
opon with the top right hand side buon on the Pure Controller.
3. Select Unit Specic using the top right buon again.
Setup Menu
Unit Specic
Input Status
Maintenance Menu
Conguraon Menu
Exit Menu
4Select CCI. This will show the current soware and Network sengs of the PURE Controller
Unit Specic
CCI
Return to previous

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Programing Instrucons
5. Set a unique device ID and MAC address (1-127) for the PURE controller. These needs to be dier-
ent than any other products on the network. The correct baud rate will also need to be set to en-
sure the communicaons operate correctly.
CCI Sengs
Device ID 0000000
MAC 050
Baud 38400
Locaon unknown
Model CCITP1203F
Firmware 4.24
Soware PURE1.0
Return to previous
6. Once all the above have been set, use the le hand buons to highlight ‘return to previous’ and
select with the top right buon to cycle out of the screens.
7. When prompted, ensure that all changes are saved when exing the sengs. Select ‘Yes’ via the
top right buon.

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