Rinnai Demand Duo User manual

Commercial Controller
Operation & Installation Manual
Models:
DDSTAT
DDSOLAR
DDPCDEL

Rinnai 2 Commercial Controller OM
This appliance must be installed in accordance with:
• Manufacturer’s Installation Instructions
• Current AS/NZS 3000
• Local Regulations and Municipal Building Codes
including local OH&S requirements
This appliance must be installed, maintained and removed
by an Authorised Person.
For continued safety of this appliance it must be installed
and maintained in accordance with the manufacturer’s
instructions.

Rinnai 3 Commercial Controller OM
Table of Contents
Warning & Regulatory 5
DDSTAT Operation 6
DDSTAT .................................................................................................................................................................... 6
Basic Operation............................................................................................................................................... 6
To program the “Tank Set Temperature”........................................................................................................ 6
To program the “Return Temperature” ........................................................................................................... 7
To program the “Alternate Pump Operation” .................................................................................................. 7
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only .......................................... 8
To program the “Connectivity options to BMS” - MODBUS With DHCP........................................................ 8
To program the “Connectivity options to BMS” - MODBUS Without DHCP................................................... 9
To program the “Connectivity options to BMS” - BACNET With DHCP ....................................................... 10
To program the “Connectivity options to BMS” - BACNET Without DHCP .................................................. 11
DDSTAT Register.................................................................................................................................................... 12
To isolate and maintain the pump(s) ............................................................................................................ 13
To view system temperatures ....................................................................................................................... 13
To view controller configuration .................................................................................................................... 14
To view pump status and run times.............................................................................................................. 14
DDSTAT Error Detection......................................................................................................................................... 15
To view displayed errors ............................................................................................................................... 15
Sensor Mounting ........................................................................................................................................... 15
DDSOLAR Operation 17
DDSOLAR (Commercial Solar Controller) .............................................................................................................. 17
To program the “Alternate Pump Operation” & Frost Protection .................................................................. 18
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only ........................................ 18
To program the “Connectivity options to BMS” - MODBUS With DHCP...................................................... 19
To program the “Connectivity options to BMS” - MODBUS Without DHCP................................................. 19
To program the “Connectivity options to BMS” - BACNET With DHCP ....................................................... 20
To program the “Connectivity options to BMS” - BACNET Without DHCP .................................................. 20
DDSolar Register .................................................................................................................................................... 22
To isolate and maintain the pump(s) ............................................................................................................ 23
To view pump status and run times.............................................................................................................. 23
DDSOLAR Error Detection...................................................................................................................................... 24
To view displayed errors ............................................................................................................................... 24
Sensor Mounting ........................................................................................................................................... 24
DDPCDEL Operation 25
DDPCDEL (Deluxe Pump Controller) ..................................................................................................................... 25
The features of this controller are: ................................................................................................................ 25
To program the "Ring-Main Temperature" & “Alternate Pump Operation”................................................... 25
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only ........................................ 26
To program the “Connectivity options to BMS” - MODBUS With DHCP...................................................... 26
To program the “Connectivity options to BMS” - MODBUS Without DHCP................................................. 27
To program the “Connectivity options to BMS” - BACNET With DHCP ....................................................... 28
To program the “Connectivity options to BMS” - BACNET Without DHCP .................................................. 29
DDPCDEL Register................................................................................................................................................. 30
To isolate and maintain the pump(s) ............................................................................................................ 31
To View Pump Status ................................................................................................................................... 31
DDPCDEL Error Detection...................................................................................................................................... 32
To view displayed errors ............................................................................................................................... 32
Sensor Mounting ........................................................................................................................................... 33
Final Setup .................................................................................................................................................... 33
Contacts 36

Rinnai 4 Commercial Controller OM
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Rinnai 5 Commercial Controller OM
IMPORTANT
READ ALL INSTRUCTIONS BEFORE USING THIS COMMERCIAL CONTROLLER
Always comply with the following precautions to avoid dangerous situations and to ensure
optimum performance.
Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
WARNINGS: WHEN IGNORED, CAN RESULT IN SERIOUS INJURY OR DEATH.
CAUTIONS: WHEN IGNORED, CAN RESULT IN MINOR INJURY OR PRODUCT DAMAGE.
WARNING
REGULATORY / INSTALLATION
This controller shall be installed in accordance with:
• Manufacturer’s Installation Instructions.
• Current AS/NZS 3000.
• Local Regulations and Municipal Building Codes including local OH&S requirements.
This controller must be installed, maintained and removed by an Authorised Person.
For continued safety of this controller must be installed and maintained in accordance with the
manufacturers instructions.
Take care when opening or unpacking this controller. Failure to do so may result in serious injury
or product failure.
DO NOT modify the electrical wiring of this controller. If the wiring is damaged or deteriorated
then it must be replaced by an Authorised Person. Failure to do so may result in electric shock,
re, serious injury or product failure.
CONTROLLER INSTALLATION POSITIONING
• When installing and locating the Controller (other than the default factory position),
please ensure that the position is dry and free from constant exposure to water droplets,
both GPO should be in use, if not the unused GPO should be plugged.
• Do not use power boards with this Controller.
DO NOT install the controller on its side or back!
The controller MUST
be installed in an
upright and vertical
orientation ONLY!
WARNING & REGULATORY

Rinnai 6 Commercial Controller OM
DDSTAT
The DDSTAT model is used in conjunction with Demand Duo systems and operates by measuring the temperature
of the water in the storage tank. If the temperature of the water falls below the “tank set temperature” and the “tank
low limit temperature” the controller will switch ON the pump(s) and circulate water from the tank through the HD
water heater(s) and back to the tank.
The DDSTAT is congured with a power feed to the controller, a tank temperature probe, 2 integrated GPOs
for pump or HD power supplies, and a second temperature probe that can be utilised to detect hot water return
temperatures from the HD heat source(s) if required.
• Available “TANK SET TEMPERATURE” range is 60°C to 82°C (factory default setting 65°C)
• Available “TANK LOW LIMIT TEMPERATURE” range is: 3°C less “tank set temperature” to 50°C (factory
default setting 5°C).
For example:
Tank Set Temperature Tank Low Limit Temperature Range Available
82°C 50°C to 79°C
71°C 50°C to 68°C
60°C 50°C to 57°C
The DDSTAT Controller can be set up with the following pump operation:
System Description Model Name LH GPO RH GPO
DD with 1 HD & 1 Pump DD 1 Permanently active for HD Pump
DD with 2 or more HDs & 1 Pump DD 2 + (1 Pump system) Disabled Pump
DD with 2 or more HDs & 2 Pumps DD 2 + (2 Pump system) Pump 1 Pump 2
NOTE
For DD systems with 2 pumps either simultaneous or alternation operation mode can be set.
Basic Operation
Once the controller has power, the tank temperature (home) screen is displayed. If the temperature probe
connected to the controller a temperature reading will be displayed, if no probe is connected then an error will be
registered and displayed.
To program the “Tank Set Temperature”
1. From home screen select "SET" button 1.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 62
PUMP AUTO
2. Using the arrow buttons select the "TANK SET TEMPERATURE" then
select "ACCEPT" button 2.
1 2 3
4
ACCEPT
TANK SET
TEMPERATURE
65
3. Using the arrow buttons select the "TANK LOW LIMIT TEMPERATURE"
then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
TANK LOW LIMIT
TEMPERATURE
60
DDSTAT OPERATION

Rinnai 7 Commercial Controller OM
To program the “Return Temperature”
1. From home screen select "SET" button 1.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. Using the arrow buttons select the "MEASURE RETURN TEMPERATURE
YES" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
MEASURE RETURN
TEMPERATURE
YES
3. Using the arrow buttons select the "RETURN TEMP LOW LIMIT" then
select "ACCEPT" button 2.
1 2 3
4
ACCEPT
RETURN TEMP
LOW LIMIT
60
To program the “Alternate Pump Operation”
1. From home screen select "SET" button 1.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "MEASURE RETURN TEMPERATURE" screen select "ACCEPT"
button 2.
1 2 3
4
ACCEPT
MEASURE RETURN
TEMPERATURE
YES
3. From "RETURN TEMP LOWER LIMIT" screen select "ACCEPT"
button 2.
1 2 3
4
ACCEPT
RETURN TEMP
LOW LIMIT
60
4. Using the arrow buttons select the "ALTERNATE PUMP OPERATION
YES" then select "ACCEPT" button 2.
1 2 3
4
EXIT ACCEPT
ALTERNATE PUMP
OPERATION
YES
5. Using the arrow buttons select the "SWAP PUMP EVERY 12 HOURS or 24
HOURS" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
SWAP PUMPS EVERY
12 HOURS
6. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3
to continue with further BMS programming or "NO" button 1 to nalise and
exit.1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only, go to page .........8
To program the “Connectivity options to BMS” - MODBUS With DHCP, go to page ........................8
To program the “Connectivity options to BMS” - MODBUS Without DHCP, go to page ...................9
To program the “Connectivity options to BMS” - BACNET With DHCP, go to page .........................10
To program the “Connectivity options to BMS” - BACNET Without DHCP, go to page ....................11
DDSTAT OPERATION

Rinnai 8 Commercial Controller OM
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only
1. Follow steps 1 through 5 on page 7.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3.
1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
3. Using the arrow buttons select the "BMS CONNECTION PROTOCOL
NONE" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
NONE
4. Using the arrow buttons select the "BMS CONNECTION RELAY NORMALLY
OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
To program the “Connectivity options to BMS” - MODBUS With DHCP
1. Follow steps 1 through 5 on page 7.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3.
1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
3. Using the arrow buttons select the "BMS CONNECTION PROTOCOL
MODBUS" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
MODBUS
4. Using the arrow buttons select the "BMS CONNECTION USE DHCP?
YES" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
YES
5. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
6. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
DDSTAT OPERATION

Rinnai 9 Commercial Controller OM
To program the “Connectivity options to BMS” - MODBUS Without DHCP
1. Follow steps 1 through 5 on page 7.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3.
1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
3. Using the arrow buttons select the "BMS CONNECTION PROTOCOL
MODBUS" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
MODBUS
4. Using the arrow buttons select the "BMS CONNECTION USE DHCP? NO"
then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
NO
5. Using the arrow buttons select the "BMS CONNECTION STATIC IP
ADDRESS 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP ADDRESS
000 . 000 . 000 . 000
6. Using the arrow buttons select the "BMS CONNECTION STATIC IP
GATEWAY 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP GATEWAY
000 . 000 . 000 . 000
7. Using the arrow buttons select the "BMS CONNECTION STATIC IP MASK
000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP MASK
000 . 000 . 000 . 000
8. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
9. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
DDSTAT OPERATION

Rinnai 10 Commercial Controller OM
To program the “Connectivity options to BMS” - BACNET With DHCP
1. Follow steps 1 through 5 on page 7.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3.
1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
3. Using the arrow buttons select the "BMS CONNECTION PROTOCOL
BACNET" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
BACNET
4. Using the arrow buttons select the "BMS CONNECTION USE DHCP?
YES" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
YES
5. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
6. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or NORMALLY CLOSED" then select "ACCEPT"
button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
CLOSED
7. Using the arrow buttons select the "CONTROLLER ID 1" then select
"ACCEPT" button 2.
1 2 3
4
ACCEPT
CONTROLLER ID
0001
DDSTAT OPERATION

Rinnai 11 Commercial Controller OM
To program the “Connectivity options to BMS” - BACNET Without DHCP
1. Follow steps 1 through 5 on page 7.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE
RETURN TEMP
PUMP AUTO
2. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3.
1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
3. Using the arrow buttons select the "BMS CONNECTION PROTOCOL
BACNET" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
BACNET
4. Using the arrow buttons select the "BMS CONNECTION USE DHCP? NO"
then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
NO
5. Using the arrow buttons select the "BMS CONNECTION STATIC IP
ADDRESS 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP ADDRESS
000 . 000 . 000 . 000
6. Using the arrow buttons select the "BMS CONNECTION STATIC IP
GATEWAY 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP GATEWAY
000 . 000 . 000 . 000
7. Using the arrow buttons select the "BMS CONNECTION STATIC IP MASK
000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP MASK
000 . 000 . 000 . 000
8. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
9. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or NORMALLY CLOSED" then select "ACCEPT"
button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
CLOSED
10. Using the arrow buttons select the "CONTROLLER ID 1" then select
"ACCEPT" button 2.
1 2 3
4
ACCEPT
CONTROLLER ID
0001
DDSTAT OPERATION

Rinnai 12 Commercial Controller OM
DDSTAT REGISTER
When setting up your controls monitoring interface, it is necessary to know the registry information to select the
data you wish to monitor.
All parameters are READ-ONLY.
When using MODBUS protocol please note:
• MODBUS Data is Big-Endian
• Temperatures are provided in xed point
• MODBUS Coils and Discrete inputs are not used
When using BACNET protocol please note:
• The device object contains parameters such as
version info, serial number, etc
• Temperatures are in oating point
Refer to the tables below for registers and data points.
INPUT REGISTER INFORMATION
Category Input
Register Function Size (16 bit words) Value BACNET
Product
information
30002 Product Set 1 DDSTAT Included elsewhere
30004 Major Version 1 Firmware Major version In Device Info
30007 Serial Number 2 In Device Info
Temperatures 30011 Tank thermistor temp. 1 decidegrees (e.g. 260 = 26.0 deg C) Analog Input
30012 Second thermistor temp. 1 decidegrees (e.g. 260 = 26.0 deg C) Analog Input
Pump Status
30021 Pump 1 Run Timer 2 Number of hours Analog Input
30023 Pump 2 Run Timer 2 Number of hours Analog Input
30031 Pump 1 state 1 on, off Binary Output
30032 Pump 2 state 1 on, off Binary Output
Fault status
30041 Fault state 1 true, false Binary Value
30042 Pump 1 condition 1 e.g. working or failed Binary Value
30043 Pump 2 condition 1 e.g. working or failed Binary Value
30044 Tank Thermistor condition 1 e.g. working, open, short Multi State Value
30045 Second Thermistor condition 1 e.g. working, open, short Multi State Value
30047 Tank Temp Below Limit Fault 1 true, false Binary Value
30048 Second Temp Below Limit Fault 1 true, false Binary Value
HOLDING REGISTER INFORMATION
Category Holding
Register Function Size (16 bit words) Value BACNET
Product
information 40001 Product Set 1 DDSTAT Multi State Value
Specic
Conguration
40011 BMS relay normally open 1 open, closed Binary Value
40022 Pump swap period 1 12 hours, 24 hours, 0 if not alternating Analog Value
40023 Pumps alternating 1 true, false Multi State Value
40024 Interrupt Mode 1 interrupting, not interrupting Multi State Value
40025 Interrupt Stop Time Seconds 1 seconds Analog Value
40026 Interrupt Run Time Minutes 1 minutes Analog Value
Thermistor
Conguration
40031 Tank thermistor enabled 1 true, false Binary Value
40032 Second thermistor enabled 1 true, false Binary Value
Set Points
40041 Tank Temp Set Point 1 degrees C Analog Value
40042 Tank Temp Low Limit 1 degrees C Analog Value
40043 Second Temp Low Limit 1 degrees C Analog Value
DDSTAT OPERATION

Rinnai 13 Commercial Controller OM
To isolate and maintain the pump(s)
1. From the home screen select "MAINT" button 3.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 62
PUMP AUTO
2. Select "PUMP" button 2.
1 2 3
4
EXIT PUMP TEMP
MAINTENANCE MODE
SELECT FUNCTION
3. Use the arrow buttons to manually operate the pump on and o󰀨, select
"ACCEPT" button 2 to run command.
1 2 3
4
ACCEPT
PUMP
OFF
4. If a second pump has been congured you have the option to manually
operate this pump also.
1 2 3
4
ACCEPT
PUMP 2
OFF
To view system temperatures
1. From home screen select "MAINT" button 3.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 62
PUMP AUTO
2. Select "TEMP" button 3, system temperatures will then be displayed.
1 2 3
4
EXIT PUMP TEMP
MAINTENANCE MODE
SET FUNCTION
3. Tank temperature will be shown.
1 2 3
4
EXIT MODEL
TEMPERATURES
TANK: 62
4. If the second temperature sensor has been enabled a return temperature
from the HD heat source will be shown.
1 2 3
4
EXIT MODEL
TEMPERATURES
TANK: 62
RETURN: 74
DDSTAT OPERATION

Rinnai 14 Commercial Controller OM
To view controller conguration
1. From home screen select "MAINT" button 3.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 62
PUMP AUTO
2. Select "TEMP" button 3, system temperatures will then be displayed.
1 2 3
4
EXIT PUMP TEMP
MAINTENANCE MODE
SET FUNCTION
3. From the Temperature screen select "MODEL" button 2.
1 2 3
4
EXIT MODEL
TEMPERATURES
TANK: 62
RETURN: 74
4. The Controller conguration will then be displayed select "EXIT" button 2
to return to home screen.
1 2 3
4
EXIT
CURRENT MODEL IS
DD5-6, VA0.3
2 PUMP, IT, CM, ID1
To view pump status and run times
1. From the home screen select "INFO" button 2.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 62
PUMP AUTO
2. If one pump has been congured the pump operation status and run time
hours will be displayed.
1 2 3
4
OK
PUMP ON
TOTAL RUN HOURS
0
3. If two pumps have been congured the screen will scroll through pump
operation status and run time hours. 1 2 3
4
OK
PUMP 1: ON
PUMP 2: ON
1 2 3
4
OK
PUMP RUN HOURS
PUMP 1: 0
PUMP 2: 0
DDSTAT OPERATION

Rinnai 15 Commercial Controller OM
DDSTAT ERROR DETECTION
The DDSTAT controller has in-built system error detection that is connected to internal voltage free contacts. The
voltage free contacts can connect to BMS and be either programmed to open or close on error detection.
Errors that are present are displayed on the home operating screen and can be accessed via the MODBUS and
BACNET protocols.
With the second sensor connected and enabled, the controller has the ability to detect three predetermined errors,
see below:
• Error 1, Tank Temperature falls below low set point and does not rise to temperature set point within the
prescribed period of time. This generally indicates a faulty pump.
• Error 2, With the second sensor enabled only. The temperature of the water returning from the HD Water
Heaters is insu󰀩cient. This generally indicates a faulty heat source
• Error 3, If any one or both of the sensors are faulty (outside of measurement range).
To view displayed errors
1. From the home screen select "INFO" button 2.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 0
RETURN TEMP. 7
ERROR
2. For Error 1 the following screen will be displayed.
1 2 3
4
CLEAR OK
ERROR TANK TEMP
TOO LOW
3. For Error 2 the following screen will be displayed. If both errors are present
then they will scroll through each display every 3 seconds.
1 2 3
4
CLEAR OK
RETURN TEMP
FROM HD UNIT
TOO LOW
4. For Error 3 the following screen will be present for any one or both of the
sensors. If more than 1 error is present the screen will scroll through each
error.
1 2 3
4
CLEAR OK
THERMISTOR ERROR
TANK: OPEN
RETURN: OPEN
5. To remove any of the errors select the
"CLEAR" button 1. followed by "CLEAR"
button 2.
1 2 3
4
CLEAR OK
RETURN TEMP
FROM HD UNIT
TOO LOW
1 2 3
4
EXIT CLEAR
RETURN TEMP
FROM HD UNIT
TOO LOW
Sensor Mounting
With the second temperature sensor enabled, the mounting location MUST BE close to the hot outlet of the
HD unit(s) where the hot water returns to the tank, refer Figure 1 on page 16. The sensor should be securely
mounted in a dry-well and bonded in-place with a thin lm of heat conducting medium and must be protected
against moisture and water ingress. Refer to Figure 1.
Care should be taken when xing the correct sensor to the correct location as both sensor cables look identical.
For BMS (voltage free contacts) connection to the controller, remove the cover and wire the connections to the
points identied in Figure 2 on page 16.
DDSTAT OPERATION

Rinnai 16 Commercial Controller OM
2nd
Optional
Sensor
Plug with
dry well
Brass Tee
Water Flow Tank Sensor
Location
Closed end copper pipe
welded to return pipe
2nd Optional Sensor
Insulation
Return
Pipe
Return Pipe
2nd Optional
Sensor preferred
fixing method
Alternative 2nd Optional
Sensor fixing method
Return Pipe
Figure 1. Approximate Sensor Locations
CN6
QC1
QC2
CN5
CN4
CN2
MOV2 MOV3
CN6
F1
CN1
QC1
QC4 QC6
QC2
QC5
QC3
CN5
CN3
CN4
RLY1
RLY4
RLY5
MOV1
PS1 CN2
USER PANEL
TEMP 2
DDTSTAT - Return Temp.
TEMP 1
DDTSTAT - Tank Temp.
COMMS (Ethernet)
BMS (Voltage Free Contacts)
Serial
Label
Barcode
Label
Figure 2. DDSTAT Internal PCB showing Thermistor Connections
DDSTAT OPERATION

Rinnai 17 Commercial Controller OM
DDSOLAR (COMMERCIAL SOLAR CONTROLLER)
The solar controller's function is to turn the solar pump on and o󰀨 to collect and transfer solar heated water to
the storage water cylinder. It can be supplied to operate single or dual pumps with the further option to have dual
pumps switched simultaneously or alternatively (12 hour cycle).
IMPORTANT
For single pump systems the pump MUST be plugged into the right hand GPO.
The controller determines if there is capacity in the cylinder(s) to store more solar heated water and when the
temperature di󰀨erence between the cylinder(s) and collector(s) is suitable for energy collection the controller will
activate the circulating pump(s).
Solar gain pump 'ON'
1 2 3
4
INFO MAINT
TANK TEMPERATURE 17
COLLECTOR TEMP. 37
PUMP COLLECTING
No solar gain pump 'IDLE'
1 2 3
4
INFO MAINT
TANK TEMPERATURE 34
COLLECTOR TEMP. 30
PUMP IDLE
When there is a di󰀨erential temperature between the solar collector (hot sensor) and the tank (cold sensor) the
circulating pump is switched on. When di󰀨erential falls to below the predetermined limit the circulation pump is
then switched o󰀨.
Over Temp. Protection
When the tank temperature sensor reaches the predetermined set point the pump is de-energised. This prevents
water that is too hot returning from the solar collectors to the storage cylinder and activating the P&TR valve.
Alternatively if the collector temperature is over the safe operating temperature the controller de-energises the
pump.
Frost Protection
The other function of the controller is to circulate water through the collectors when there are low ambient
temperature frost conditions to prevent the collector from freezing. When the hot temperature sensor (in collector)
drops below the pre-determined limit the pump activates to prevent freezing. The circulator will stop once the hot
sensor temperature increases. This is a function that is selected from the SET menu.
IMPORTANT
This function MUST be enabled, in areas that may experience low temperatures and to comply
with warranty conditions.
DDSOLAR OPERATION

Rinnai 18 Commercial Controller OM
To program the “Alternate Pump Operation” & Frost Protection
1. From home screen select "SET" button 1.
1 2 3
4
SET INFO MAINT
TANK TEMPERATURE 65
COLLECTOR TEMP. 80
PUMP IDLE
2. Using the arrow buttons select the"NUMBER OF PUMPS" then select
"ACCEPT" button 2.
If "1" selected go to Step 5, if 2 selected go to Step 3. 1 2 3
4
EXIT ACCEPT
NUMBER OF PUMPS
1
3. Using the arrow buttons select the "ALTERNATE PUMP OPERATION
YES" then select "ACCEPT" button 2.
1 2 3
4
EXIT ACCEPT
ALTERNATE PUMP
OPERATION
YES
4. Using the arrow buttons select the "SWAP PUMP EVERY 12 HOURS or 24
HOURS" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
SWAP PUMPS EVERY
12 HOURS
5. From "CONTINUE TO ADVANCED SETUP" screen select "YES" button 3
to continue to set up the Frost Protection Mode or "NO" button 1 to nalise
and exit. 1 2 3
4
CONTINUE TO
ADVANCED SET UP
NO YES
6. Using the arrow buttons select either "YES" or "NO" for Frost Protection
Mode then select "ACCEPT" button 2. This will take you to the BMS screen.
1 2 3
4
ACCEPT
USE FROST MODE
IN AUTO?
YES
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only, go to page .........18
To program the “Connectivity options to BMS” - MODBUS With DHCP, go to page ........................19
To program the “Connectivity options to BMS” - MODBUS Without DHCP, go to page ...................19
To program the “Connectivity options to BMS” - BACNET With DHCP, go to page .........................20
To program the “Connectivity options to BMS” - BACNET Without DHCP, go to page ....................20
To program the “Connectivity options to BMS” - Using Volt Free Contacts Only
1. Follow steps 1 through 6 above to get to the BMS home screen. Then
using the arrow buttons select the "BMS CONNECTION PROTOCOL
NONE" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
NONE
2. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
DDSOLAR OPERATION

Rinnai 19 Commercial Controller OM
To program the “Connectivity options to BMS” - MODBUS With DHCP
1. Follow steps 1 through 6 on page 18 to get to the BMS home screen.
Then using the arrow buttons select the "BMS CONNECTION PROTOCOL
MODBUS" then select "ACCEPT" button 2 1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
MODBUS
2. Using the arrow buttons select the "BMS CONNECTION USE DHCP?
YES" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
YES
3. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
4. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
To program the “Connectivity options to BMS” - MODBUS Without DHCP
1. Follow steps 1 through 6 on page 18 to get to the BMS home screen.
Then using the arrow buttons select the "BMS CONNECTION PROTOCOL
MODBUS" then select "ACCEPT" button 2
1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
MODBUS
2. Using the arrow buttons select the "BMS CONNECTION USE DHCP? NO"
then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
NO
3. Using the arrow buttons select the "BMS CONNECTION STATIC IP
ADDRESS 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP ADDRESS
000 . 000 . 000 . 000
4. Using the arrow buttons select the "BMS CONNECTION STATIC IP
GATEWAY 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP GATEWAY
000 . 000 . 000 . 000
5. Using the arrow buttons select the "BMS CONNECTION STATIC IP MASK
000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP MASK
000 . 000 . 000 . 000
6. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
7. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
DDSOLAR OPERATION

Rinnai 20 Commercial Controller OM
To program the “Connectivity options to BMS” - BACNET With DHCP
1. Follow steps 1 through 6 on page 18 to get to the BMS home screen.
Then using the arrow buttons select the "BMS CONNECTION PROTOCOL
BACNET" then select "ACCEPT" button 2. 1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
BACNET
2. Using the arrow buttons select the "BMS CONNECTION USE DHCP?
YES" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
YES
3. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
4. Using the arrow buttons select the "BMS CONNECTION RELAY
NORMALLY OPEN or CLOSED" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
RELAY NORMALLY
OPEN
5. Using the arrow buttons select the "CONTROLLER ID 1" then select
"ACCEPT" button 2.
1 2 3
4
ACCEPT
CONTROLLER ID
0001
To program the “Connectivity options to BMS” - BACNET Without DHCP
1. Follow steps 1 through 6 on page 18 to get to the BMS home screen.
Then using the arrow buttons select the "BMS CONNECTION PROTOCOL
BACNET" then select "ACCEPT" button 2. 1 2 3
4
ACCEPT
BMS CONNECTION
PROTOCOL
BACNET
2. Using the arrow buttons select the "BMS CONNECTION USE DHCP? NO"
then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
USE DHCP ?
NO
3. Using the arrow buttons select the "BMS CONNECTION STATIC IP
ADDRESS 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP ADDRESS
000 . 000 . 000 . 000
4. Using the arrow buttons select the "BMS CONNECTION STATIC IP
GATEWAY 000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP GATEWAY
000 . 000 . 000 . 000
5. Using the arrow buttons select the "BMS CONNECTION STATIC IP MASK
000.000.000.000" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
STATIC IP MASK
000 . 000 . 000 . 000
6. Using the arrow buttons select the "BMS CONNECTION MAC ADDRESS
XX.XX.XX.XX.XX.XX" then select "ACCEPT" button 2.
1 2 3
4
ACCEPT
BMS CONNECTION
MAC ADDRESS
XX . XX . XX . XX . XX . XX
DDSOLAR OPERATION