Black Diamond Equipment HYDROBOX 2 User manual

Designed and manufactured in New Zealand
Black Diamond Technologies
USER MANUAL

Features and Functions
• Features .............................................................................................................. Page 1
• Smart Operation ................................................................................................. Page 2
• Mandatory Legionella Control ............................................................................ Page 2
• Low Usage Conditions ....................................................................................... Page 2
• Modes .................................................................................................................. Page 2
Controller
• Control Panel ........................................................................................................ Page 3
• Power Button ........................................................................................................ Page 3
Operation
• Display Screens ............................................................................................. Pages 4–7
• Trouble Shooting ................................................................................................. Page 8
• Fault Codes and Descriptions ............................................................................ Page 9
• Important Information ....................................................................................... Page 10
• Water Storage Cylinder Requirements ............................................................. Page 10
• Electrical Requirements .................................................................................... Page 10
• Specifications ................................................................................................... Page 11
• Warnings ..................................................................................................... Page 11–13

1
FEATURES
Hydrobox 2 Features
The Black Diamond Hydrobox 2 has many user friendly
intuitive functions and features including:
Starting Features
• Manual Power On/Standby
• Smart Meter Interface
• 7 Day Programmable Timer
• Ripple Feed Power Management Compatible
• Automatic Reheat
Automatic switching to hot water cylinder’s electric
element under fault conditions
Highly efficient defrost control
Low standby power consumption
Internal power usage meter
Battery backup internal clock
Audible Alarm in following situations:
• Over current
• Insufficient heating
• Over temperature
• No water
• Water leakage
• Refrigerant leakage
• Requires Service Life Servicing
- Heat exchanger clean
- Water pump replacement
Please note the Hydrobox 2 must
be installed by persons qualified
in the trade (Plumbing, Electrical,
Refrigeration and any other
qualifications required by regulation,
standards or law), and must comply
with all applicable standards, codes
and regulations in force in the country
of installation.

2
Smart Operation
The Black Diamond Hydrobox 2 has been designed to
maximise performance and cost savings, utilising optimised
control.
When not heating water, the power is switched off to the
outdoor unit, lowering standby power usage and increasing
efficiency. The system can be further optimised by choosing
the times of the day that it can operate. The higher the
ambient temperature, the more efficient the system
operates. Colder water at the input side also increases the
efficiency.
Mandatory Legionella Control
Each week the Hydrobox 2 will complete a legionella control
operation. The Hydrobox 2 will carry out a deep disinfect
cycle including activating the electric element of the hot
water cylinder as required to ensure tank temperature is
above 60°C for a period no less than 1.5hrs.
Low Usage Conditions
Where the system has not been activated within 18 hours, a
new heating cycle will be completed. This is carried out at 1pm
on the second day since last being active. This ensures the
tank water is safe even after long periods of not being used.
Modes
The Black Diamond Hydrobox 2 can be set in one of three
modes.
Normal [Norm] – 40°C return temperature
When operating in Normal Mode, the Hydrobox 2 unit
continues to heat the water in the Water Storage Cylinder until
the return water temperature reaches 40°C. This ensures 90%
of the user’s Water Storage Cylinder is over 60°C.
Economic [Econ] – 40°C return temperature
When operating in Economy Mode the Hydrobox 2 heats
the water over a longer period than normal mode, using
less energy (ideal for solar connections).
Disinfect [Disin] – 50°C return temperature
Disinfect Mode ensures that the bottom of the tank reaches
above 50°C. This mode is recommended for poor quality,
non-town supplied water, such as rain water and untreated
river water.
PLEASE NOTE: For the Hydrobox 2
timers to function correctly the system
cannot be connected to a traditional
ripple mains relay plan. If you are
connected to such a plan, discuss the
best options for your specific location
with your electricity retailer.
PLEASE NOTE: Cylinder thermostat
must be set to 60°C.

3
CONTROLLER
Control Panel
The Hydrobox 2 Controller is an easy to use 4 button
control panel with an LED display which automatically lights
up when a button is pressed. Once installed the unit should
not require adjustment outside use of the 7 Day Timer.
The back light will stay illuminated for 5 minutes from the
last button press.
Power Button Features
On/Standby
• Press the power button to turn the system on.
Off – Holiday mode
• Hold down the power button for 4 seconds to turn
the system off.
Cylinder Electric Element On/Off
• Holding down the power button for 10 seconds will
turn the cylinder’s electric element on/off.
Unit Activation
The Hydrobox 2 System is either turned on by the user or it
will automatically power on from Standby when:
• The power is initially connected or recovers from a
power outage
• The water tank temperature drops by 20°C
• The power turned on by a traditional ripple power
relay
• The unit has been turned on by one of the 7 timers
• The system has not been in a heating cycle for 1.5
days (see low usage conditions pg.4)
Unit Standby
The system will automatically switch to Standby (STBY)
when:
• The return water temperature reaches 40°C in Normal
Mode and ECO Mode or when it reaches 50°C in
Disinfect Mode
• The unit has been turned off by one of the 7 timers
• The unit has been manually turned off
PLEASE NOTE: The system will not
automatically restart if the Restart
Sensor has not dropped by 20°C from
the last heating cycle.
Mode ECON Ver-4.22Mode ECON Ver-4.22Mode ECON Ver-4.22
Release Aug 2 218Release Aug 2 218Release Aug 2 218

4
OPERATION
Display Screens
The Hydrobox 2 features 20 display screens. The following
is a list of the display screens in sequential order:
• Standby Screen
• Temperature Selection / Set Point Adjust
• Set Mode Screen
• IP/MAC Address Screen
• Time/Date Screen
• Summer/Winter Time Set Screen
• A: Primary & Hydronic Electrical Information
• B: R134A Electrical Information
• Timer 1 Screen
• Timer 2 Screen
• Timer 3 Screen
• Timer 4 Screen
• Timer 5 Screen
• Timer 6 Screen
• Timer 7 Screen
• Water Temperature Screen
• Indoor Unit Refrigeration Temperature Screen
• Outdoor Unit Refrigeration Temperature Screen
• External Tank Temperature Probes Screen
• Water Pump Speed Screen
• Water Flow Meter Screen
• Water Usage Meter Screen
• Water Meter Calibration Screen
• R134A LEV Position Screen
• Network Control Screen
To scroll through the above screens simply press the
Select/Mode button and then press the Up button
to scroll through.
Standby Screen
The screen above indicates that none of the timers are set.
If one of the 7 timers is set, the display will indicate this. In
the example below “TMR1247” indicates that timers 1, 2, 4
and 7 are set.
To power on the Hydrobox 2 press the Power button to
turn on.
The main LED screen and the green power LED will
illuminate (see Fig. 1) to indicate the unit is on. If the green
power LED is flashing this indicates one or more of the 7
timers is set.
When powered on, the set temperature, date, time and
mode will be displayed, along with the timers which are
currently active. Should the unit be operating due to one of
the set timers, the timer will flash at 1 second intervals to
indicate that it is in timer operation.
Temperature Selection/Set Point Adjust Screen
The Hydrobox 2 System is set to 62°C as factory standard.
However the set temperature adjustment range is from
55–63°C.
To change the set temperature, use the following steps:
• Press the button – the indicated Set Temp will
flash.
• The temperature can now be adjusted with the
Down or Up buttons.
• Once the desired set temp is showing, confirm by
pressing – the Set Temp will stop flashing to
indicate this has been confirmed.
626262
...
ccc
2/8/18 12:55 ECON2/8/18 12:55 ECON2/8/18 12:55 ECON
STBY TMR1247 143STBY TMR1247 143STBY TMR1247 143
2/8/18 12:55 ECON2/8/18 12:55 ECON2/8/18 12:55 ECON
STBY STBY STBY 
2/8/18 12:55 ECON2/8/18 12:55 ECON2/8/18 12:55 ECON
Power
Button
Select/Mode
Button
Scroll Down
Button
Scroll Up
Button
Mode ECON Ver-4.22Mode ECON Ver-4.22Mode ECON Ver-4.22
Release Aug 2 218Release Aug 2 218Release Aug 2 218
Fig. 1

5
Set Mode Screen
The mode description in the bottom right corner indicates the
heating mode the Hydrobox 2 is set to operate in. As described
previously there are three modes the Hydrobox 2 can be set to:
Economic (ECON), Disinfect (DISIN) and Normal (NORM).
To change the Hydrobox 2 operating mode, use the
following steps:
• Press the button.
• Scroll through to the Set Mode Screen by pressing
Down or Up.
• The image below depicts the screen which should
now be seen. (Version number and date will differ)
• Press the button.
• The mode description (in this case ECON) will now
flash indicating it is ready to be changed.
• Scroll to the desired mode by pressing the
Down or Up buttons.
• Once the desired mode is showing, confirm by
pressing . The mode description will stop flashing
to indicate this has been confirmed.
• The outdoor model number then flashes.
IP/mac Address Screen
The IP/Mac address contains network information of the
Hydrobox 2.
Time/Date Screen
Please use the following steps to set the time and date:
• Press the button.
• Scroll to the Time/Date Screen by pressing the
Down or Up buttons.
• Press – the ‘time’ will begin flashing to indicate it
is ready to be changed.
• Press to proceed to setting the hour and adjust
Down or Up to the correct hour.
• Press to proceed to setting the minutes and
adjust Down or Up to the correct minutes.
• Press to proceed to setting the month and adjust
Down or Up to the correct month.
• Press to proceed to setting the year and adjust
Down or Up to the correct year.
• Press to proceed to setting the day and adjust
Down or Up to the correct day.
• Finally press to finish the Time/Date setting.
Summer/Winter Time Set Screen
To set the daylight saving start and stop days, please use
the following steps:
• Scroll to the Summer/Winter Time Screen by
pressing Down or Up.
• Press – the ‘Week’ description indicated will
begin flashing to indicate it is ready to be changed.
The following key denotes the week association:
-1ST = 1st Sunday, 2ND = 2nd Sunday, 3RD = 3rd
Sunday, 4TH = 4th Sunday, LST = Last Sunday
• Use Down or Up to adjust.
• Press to proceed to setting the day and adjust
Down or Up to the desired day.
• Press to proceed to setting the month and adjust
Down or Up to the desired month.
• Press to proceed to setting the time and adjust
Down or Up to the desired time.
• Press to proceed to setting the winter time week,
day, month and time using the same steps as above.
• Finally press to finish the Summer/Winter Time
setting.
Network Control Screen
The Network Control Screen is used in combination with the
Wi-Fi Control app to provide Wi-Fi Control for the Hydrobox
2. Wi-Fi control is on by default.
• Press the button.
• Scroll to the Network Control Screen by pressing
the Down or Up buttons.
• Press to adjust settings.
• Use Down or Up to scroll to desired option.
• Press to confirm change.
Sum LST SUN SEP 2Sum LST SUN SEP 2Sum LST SUN SEP 2
Win 1ST SUN APR 3Win 1ST SUN APR 3Win 1ST SUN APR 3
REM ID: 17216126142REM ID: 17216126142REM ID: 17216126142
ON MAC: 1F1238D4D4ON MAC: 1F1238D4D4ON MAC: 1F1238D4D4
Mode ECON Ver-4.22Mode ECON Ver-4.22Mode ECON Ver-4.22
Release Aug 2 218Release Aug 2 218Release Aug 2 218
IP 172.16.126.142IP 172.16.126.142IP 172.16.126.142
MAC80:1F:12:38:D4:D4MAC80:1F:12:38:D4:D4MAC80:1F:12:38:D4:D4

6
Display Screens – continued
Timer Screens (T1–7)
The Hydrobox 2 System has a total of 7 timers. Each timer
can be set in one of four ways:
1. As an Operational Window Timer
(The system can only operate during a set period of time.
The unit is forced to complete an initial heating cycle, If the unit
is running at the off time it will complete the cycle and shut off.)
Example shows an operation window timer set to
allow the unit to come on from 7am and shut off at
5pm everyday.
2. As a Non-Operational Window Timer
(The unit is restricted in operation and cannot run during time
specified. If a heating cycle is running at off time, the system
will force stop the operation.)
Example shows an non-operation window timer set to
prevent the unit from operating between 5pm and 7am
daily.
3. As a Force heat
(The system turns on at a set time and will force the unit to
run at a set time regardless of restart sensor temperature.)
Example shows a Force Heat timer set to 3pm everyday.
4. As a Force Stop
(The system turns off at a set time and forces the unit to
stop regardless of restart sensor temperature and disallows
operation until a “Force Heat” timer occurs or user presses
power button.)
Example shows Force Stop set to 5pm everyday.
Each individual timer can be set to repeat daily, on specific
days of the week, on all weekdays, or on weekends only.
Each timer can be set individually by using the following
steps:
• Scroll through to the desired timer screen.
(T1 – T7) denote the timers available.
• Initially one of the four timer options must be selected.
To do so press <> – the On/Off description will begin
flashing to indicate it is ready to be changed.
• Use Down or Up to adjust. If an On/Off or On
Timer is required press Down or Up until On
is indicated. If an Off/On or Off Timer is required press
Down or Up until Off is indicated.
• Press to proceed to setting the hour and adjust
Down or Up to the correct hour.
• Press to proceed to setting the minute and adjust
Down or Up to the correct minute.
• Press to proceed to setting the desired timer
occurrence and use Down or Up to select
MON-SUN (a specific day), DAY (daily), WKD
(weekend only), or M2F (weekdays).
• Press to proceed to setting the timer activation.
Should the timer be required use the Down or
Up buttons to adjust until On is indicated. To
deactivate the timer adjust until Off is indicated.
• Press to proceed to setting the second time line.
Setting this time will depend on the initial timer option
chosen.
-On/Off Timer set the hour and minute to the time
you wish the system to turn off.
-Off/On Timer set the hour and minute to the time
you wish the system to turn on.
-On Timer set the hour and minute to match
the same time chosen previously e.g. both time
selections should match.
-Off Timer set the hour and minute to match
the same time chosen previously e.g. both time
selections should match.
• Press to confirm and end the timer setting
process.
T1 On 7: DAYT1 On 7: DAYT1 On 7: DAY
ON Off 17:ON Off 17:ON Off 17:
T1 Off 17: DAYT1 Off 17: DAYT1 Off 17: DAY
ON On 7:ON On 7:ON On 7:
T1 On 15: DAYT1 On 15: DAYT1 On 15: DAY
ON --- 15:ON --- 15:ON --- 15:
T1 Off 17: DAYT1 Off 17: DAYT1 Off 17: DAY
ON --- 17:ON --- 17:ON --- 17:
WARNING: The Force Stop timer is not
recommended

7
Technical and Service Screens
NOTE: The following screens display service and diagnostic information. These screens are
intended for use by technical and service personal and most cannot be adjusted.
WARNING: Do not adjust the water
meter calibration screen as this may
result in adverse effects on units
performance.
Water Temperature Screen
Water 22Water 22Water 22
...
c in 22c in 22c in 22
.
c in 22
...
c in 22
.
c in 22
.
c in 22
...
c in 22
.
...
c outc outc out
222222
...
c inter -4c inter -4c inter -4
.
c inter -4
...
c inter -4
.
c inter -4
.
c inter -4
...
c inter -4
.
...
c usec usec use
Indoor Unit Refrigeration Temperature Screen
The Indoor (ID) Temperature Screen displays the R134A
refrigerant measurements.
ID 23ID 23ID 23
...
c dischargec dischargec discharge
.
c discharge
...
c discharge
.
c discharge
.
c discharge
...
c discharge
.
222222
222222
...
c sub 23c sub 23c sub 23
.
c sub 23
...
c sub 23
.
c sub 23
.
c sub 23
...
c sub 23
.
...
c discharge
.
c dischargec dischargec discharge
.
c discharge
.
c discharge
.
c dischargec dischargec discharge
.
c discharge
c suctionc suctionc suction
.
c suction
...
c suction
.
c suction
.
c suction
...
c suction
.
Outdoor Unit Refrigeration Temperature Screen
The Outdoor (OD) Temperature Screen displays the R32
refrigerant measurements.
OD 22OD 22OD 22
...
cdis 22cdis 22cdis 22
.
cdis 22
...
cdis 22
.
cdis 22
.
cdis 22
...
cdis 22
.
...
cconcconccon
222222
...
csubcsubcsub
.
csub
...
csub
.
csub
.
csub
...
csub
.
External Tank Temperature Probes Screen
Temp In 22Temp In 22Temp In 22
...
c Out 22c Out 22c Out 22
...
ccc
Set Temp 62Set Temp 62Set Temp 62
...
ccc
Water Pump Speed Screen
H2O Pump Speed %H2O Pump Speed %H2O Pump Speed %
Water Flow Meter Screen
The Water Flow Meter Screen indicates the rate at which
water passes through the Hydrobox unit.
Water Flow Meter:Water Flow Meter:Water Flow Meter:
46 Pulses/Litre46 Pulses/Litre46 Pulses/Litre
Water Usage Meter Screen
The Water Usage Meter Screen, when using an optional
water usage meter, indicates the rate at which heated water
is flowing from the storage water cylinder.
Water Usage Meter:Water Usage Meter:Water Usage Meter:
12 Pulses/Litre12 Pulses/Litre12 Pulses/Litre
Water Meter Calibration Screen
FLOW 0.00 0.00L/mFLOW 0.00 0.00L/mFLOW 0.00 0.00L/m
USAGE 0.00 0.00L/mUSAGE 0.00 0.00L/mUSAGE 0.00 0.00L/m
Progress Sequence Indicator
These numbers represent the start up & run sequence of
the system.
These numbers will change periodically. These are used for
technical purposes only.
STBY STBY STBY 
2/8/18 12:55 ECON2/8/18 12:55 ECON2/8/18 12:55 ECON
A: Primary & Hydronic Electrical Information
Outdoor unit and indoor PCB power metering.
A -17PF 19VAA -17PF 19VAA -17PF 19VA
238V 79mA 3W238V 79mA 3W238V 79mA 3W
B: R134A Electrical Information
R134A compressor power metering.
B -1DOPF 0VAB -1DOPF 0VAB -1DOPF 0VA
238V 0mA 0W238V 0mA 0W238V 0mA 0W
R134A LEV Position Screen
The R134A LEV position screen displays information on the
liquid refrigerant inside the unit.
R134A LEV Pos: 0R134A LEV Pos: 0R134A LEV Pos: 0

8
TROUBLESHOOTING
Troubleshooting
The Hydrobox 2 System has two levels of fault codes:
Level 1
• Minor faults which are automatically self-corrected. These faults may be displayed but the system will continue to
function normally. Please refer to the Fault Codes and Descriptions chart on the opposite page. Please note that
some Level 1 faults may require a service call.
Level 2
• All Level 2 faults require a qualified service person to address. When these errors are detected the LCD display
will display the error number, the blue fault light will illuminate and the alarm buzzer will sound. The system will
automatically switch on the power to the external element (if connected) to ensure the storage water cylinder still has
hot water.
Water Leaks
In the event a water leak is discovered, immediately turn off the Hydrobox 2 System. Proceed to call your plumber or
technical/service agent.
WARNING: Should FLT09 or FLT10 be displayed, or in the event of a very loud whistling noise
coming from the water tank and bursts of air discharges from the tap, immediately turn the
Hydrobox off and if possible the water taps that isolate the Hydrobox from your water cylinder and
call your authorised installer/service agent.
As a precaution do not drink the water until the system has been inspected.
WARNING: To avoid running out of hot water, the system is designed to ensure you have a
minimum of half a tank of hot water before it starts the heating process. If your household has
high demand times during the day, such as everyone showering in the morning, you can set any
one of the seven timers to start the heat process 1.5 hours before your high demand period to
ensure you have a full tank of hot water.
NOTE 1: If there has been a water supply outage or the water turned off for maintenance this will
also cause air bubbles in the water supply. The Hydrobox 2 has an internal Automatic Air Bleeder
Valve installed which in most cases will automatically remove air around the water pumps. If the
system has FLT00 or FLT03 or FLT09 or FLT14 shortly after the system starting, then ensure that
the air has been bled out of the Hydrobox System by turning off the water to the Storage Tank
Isolation Valve, ensuring that the cold and hot water supply valves to the Hydrobox 2 are open,
press the menu button twice to open the motorised ball valve and turn on a hot tap until the flow
has no air bursts. Turn off the hot tap and open the Storage Tank Isolation Valve. Manually press
the power on button again.
NOTE 2: If the system has an FLT05 alarm ensure that the Sensor placed half way up the tank is
plugged into CN46. Also check that the cable between the PTC Sensor and CN46 is not damaged
or open circuit. At 25°C the resistance between the two wires is 100k ohms.

9
Fault Codes and Descriptions
Fault
Code Fault Description Level Buzzer External Element
Turned On User Action Action
FLT00 No water flow at
start-up 2Yes Yes Call for service The system needs bleeding – Refer to note 1
FLT01 Water pump > max.
speed. Water too hot 1 No No System will retry Fault will be displayed but system will continue
to retry
FLT02 Water pump < min.
speed. Water too cold 1 No No System will retry Fault will be displayed but system will continue
to retry
FLT03 R134A thermal cut out
activated 1 No No System will retry Will shut down for 3 minutes and restart – refer
to note 1
FLT04 R134A thermal cut out
activated 4 times 2Yes Yes Call for service
Unit has had 3 FLT03 errors in the same run –
fault alarm activated and external element turned
on
FLT05 Tank Sensor not
detected 1Yes No Call for service
The system will still heat the water tank but will
not be able to sense when to restart the heating
cycle – refer to note 2
FLT06 No OD Startup Data
detected 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT07
FLT07 Outdoor unit not
responding 2Yes Yes Call for service Outdoor unit not responding
FLT08 Outdoor current too
high > 9A 2Yes Yes Call for service Outdoor unit using too much power
FLT09 IA too high >= 3A 2 Yes Yes Call for service Indoor compressor using too much power – refer
to note 1
FLT10 Possible refrigerant
gas leak 2Yes Yes Call for service Turn off power and water taps to Hydrobox
FLT11 Defrost WE < 4.0 1 No No System will retry Water too cold to defrost possible water pump
fault
FLT12 TC < 2.0 2 Yes Yes Call for service Not enough energy for defrost
FLT13 IA too high 2 Yes Yes Call for service Indoor compressor fault
FLT14 R134A discharge
temp too high > 90.0 2Yes Yes Call for service Indoor compressor over heated – refer to note 1
FLT15 R32 discharge temp
too high > 90.0 2Yes Yes Call for service Outdoor unit discharge too high
FLT17 R134A refrigerant
charge low 1 No No Call for service Check for possible R134A refrigerant leaks and
recharge as per service manual to 200 grams
FLT18 R134A refrigerant too
high 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT09
FLT19 Outdoor unit has
errored 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT07
FLT20 Critical outdoor
shutdown 2Yes Yes Call for service Major fault call for service
FLT21 R134A refrigerant
charge too low 1Yes Yes Call for service Check for possible R134A refrigerant leaks and
recharge as per service manual to 200 grams
FLT22
Not enough heat
energy from outdoor
unit after 30 minutes
from start-up
1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT02
FLT23 R134A discharge
too high 1 No No System will retry Will retry every 15 minutes
After 4 attempts it will fault FLT14
FLT24 R32 Condensing
below 2°C1 No No System will retry Will retry every 15 minutes
After 4 attempts it will fault FLT12
FLT26 R32 discharge temp
too high >90.0°C 1 No No System will retry Will retry every 15 minutes
after 3 attempts it will fault FLT15
FLT27 Water exit below 50C
for 5 minutes 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT10
FLT28 Water exit too hot 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT01
FLT34 after 3 attempts it will
fault FLT15 2Ye s Yes Call for service Refer to FLT00

10
Water Storage Cylinder Requirements
The Hydrobox 2 has been designed for retrofit to an existing water storage cylinder or new installation.
The Water Storage Cylinder must have an effective diffuser on the bottom water feed and be well insulated to ensure the
cylinder remains stratified. For mains pressure systems the water pressure must be limited to 500 kPa (5 bar). A water
strainer must be used on the water supply to the cylinder. The installation of the Water Storage Cylinder must be carried out
by a registered plumber and meet the required government regulations.
Flexible metal enclosed hoses are recommended for connections between the Hydrobox unit and fixed water terminals. This
ensures added earthquake protection and vibration noise reduction.
Floor mount of the Hydrobox 2 is preferred as hollow internal walls will act as a drum skin and amplify the compressor
vibration into audible sound.
Electrical Requirements
The Hydrobox 2 outdoor unit must be installed in accordance with the installation instructions typical of standard heat pump/
air-conditioning units. A 4 core 1.5mm² cable is required between the indoor and outdoor units and a lockable isolation
switch by NZ law required beside the outdoor unit. A lockable isolation switch is also recommended for the mains power
supply feed to the Hydrobox unit. Power is taken from the normal water tank element source.
For more details please refer to the installation manual.
IMPORTANT INFORMATION
The unit should not be installed, relocated, disassembled, altered, or repaired by the end user.
• Improperly handled units may cause fire, electric shock, injury, water leakage, etc. Consult your supplier for advice
before any work is carried out around the unit.
• If the power supply cord is damaged, it must be replaced by the manufacturer or its service representative in order to
avoid a hazard.
When installing, relocating, or servicing the unit, make sure that no substance other than the specified
refrigerants (R32 in the outdoor unit and R134A in the Hydrobox unit) enters the refrigerant circuit.
• Any presence of foreign substance such as air can cause abnormal pressure rise and may result in explosion or
injury.
• The use of any refrigerant other than that specified for the system will cause mechanical failure, system malfunction,
or unit breakdown. In the worst case, this could lead to a serious product safety issue.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
During operation the water pipes and refrigerant pipes get hot and should not be touched. Doing so may cause
serious injury.

11
WARNING
Consult your supplier for correct and safe installation of the Black Diamond Hydrobox 2.
• This unit should not be installed by persons other than authorised technicians. An improperly installed unit
may cause fire, electric shock, injury, water leakage etc.
Dedicated power supply required.
• A non-dedicated power supply may cause overheating or fire.
Do not install the unit where flammable gas could leak.
• If gas leaks and accumulates around the outdoor unit, it may cause an explosion.
Earth the unit correctly.
• Do not connect the earth wire to a gas pipe, water pipe, lightning rod, or a telephone ground wire. Improper
earthing may cause electric shock.
All water pipes between the Hydrobox unit and the storage water cylinder must be insulated.
All refrigerant pipes between the Hydrobox unit and the outdoor unit must be insulated.
SPECIFICATIONS
Heating
Capacity Rated [kW] 3.4
Min-Max [kW] 0.9 – 4.5
Input Rated [kW] 0.82
Min-Max [kW] 0.004 – 1.40
Sound Level Outdoor (SPL) [dBA] 49
Power Supply (Powered from indoor unit) 240V / Single Phase / 50 Hz
Controller In-built 7 Day Timer, External Temperature Probe, Ripple mains feed compatible
Water Piping
Diameter (Inlet/Outlet) [inch] ½
Water Flow [L/minute] 0.6 – 2.4 (1.2 typical)
Water Head Height Min [m] 5
Water Pressure Max [kPa] 500
Water Temperature Range Input [°C] 5 – 55
Refrigerant
Piping
Diameter (Liquid/Gas) [mm] 6.35 / 9.52
Max. Length/Height [m] 20 / 12
Chargeless Piping Length [m] 10
Indoor Unit
Dimensions (W x D x H) [mm] 455 x 240 x 395
Weight [kg] 23.1
Refrigerant Type R134A
Quantity [g] 200g (+/– 10g)
Outdoor Unit
Dimensions (W x H x D) [mm] 800 x 550 x 285
Weight [kg] 33
Refrigerant Type R32
Quantity [g] 970
Operation Range
Outdoor Heating [°C] -15 / +45
Optional Extras Ethernet connection (Standard), Optional Water Inlet Temperature Probe, Optional Water Outlet Temperature
Probe, Optional Water Usage Meter, Optional Water Flow Meter

12
WARNING
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the
manufacturer.
The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames,
an operating gas appliance or an operating electric heater.
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
1.0 Ventilation
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
2.0 Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other
adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from
sources such as compressors or fans.
3.0 Detection of flammable refrigerant
Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant
leaks. A halide torch (or any other detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for all refrigerant systems.
Electronic leak detectors may be used to detect refrigerant leaks but, in the case of , the sensitivity may not be
adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that
the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment
shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the
appropriate percentage of gas (25 % maximum) is confirmed.
Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine
shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
NOTE Examples of leak detection fluids are
• bubble method,
• fluorescent method agents.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system,
or isolated (by means of shut off valves) in a part of the system remote from the leak. Removal of refrigerant shall be
according to Clause DD.9.
SAFETY WARNINGS

13
4.0 Removal and Evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall
be used. However, for it is important that best practice is followed since flammability is a consideration. The following
procedure shall be adhered to:
• remove refrigerant;
• purge the circuit with inert gas (optional for A2L);
• evacuate (optional for A2L);
• purge with inert gas (optional for A2L);
• open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing Flammable
refrigerant other than A2L Refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance
safe for Flammable refrigerant. This process may need to be repeated several times. Compressed air or oxygen shall
not be used for purging refrigerant systems.
5.0 Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice
that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used
are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of
refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working
order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is
at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable
refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall
be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check
that it is in satisfactory working order, has been properly maintained and that any associated electrical components
are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant
waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level
to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be
carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be
employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.

PRINTED NOVEMBER 2021