Page 1
V1 – 2/15
Model Numbers
RHUE-3AVHN1
RHUE-(3-6)A(V)HN-HM
Hitachi Air Conditioning Europe SAS
UK Branch.
Whitebrook Park, Lower Cookham Road, Maidenhead, Berkshire SL6 8YA
Hitachi Yutaki Heat pump
Installation reference manual
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General
This manual is provided by Hitachi Air Conditioning Europe (HACE) for reference use by qualified
installers of the Yutaki range of heat pumps. Qualified installers will have attended the Hitachi
recognised training course before installing any Hitachi product. Non attendance of such a course in a
recognised Hitachi training centre may void the warranty on any products supplied.
This manual does not replace the service manual which is referred to within these pages. This manual
provides guidance only as to the key elements of the design and installation of heat pumps and heating
system design (docking options) referred to on the front cover of this manual.
This manual refers to the Yutaki M series heat pump service manual SMGB0090 rev.0 – 01/2014
No part of this publication may be reproduced, copied, filed or transmitted in any shape or form without
the express permission of HACE.
All regulations for water usage, energy efficiency, electrical safety and others as applicable to the
installation in force at the time of the installation must be adhered to and all such regulations shall take
precedence over any advice and inference given herein.
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Contents Page
Quick Start .................................................................................................. 4
Configuration selection guide ....................................................................... 5
Introduction ................................................................................................... 6
List of Accessories ...................................................................................... 8
Key installation considerations ......................................................................... 11
Transportation of heat pump ......................................................................... 13
Heat Pump hydraulic installation considerations ........................................... 16
Advanced System Controller pack ............................................................ 18
Electrical installation ...................................................................................... 19
Heating system hydraulics ......................................................................... 25
Heating circuit examples ......................................................................... 26
Configuration H ..................................................................................... 30
Configuration 1.0 ...................................................................................... 32
Configuration 1.2 ...................................................................................... 34
Configuration 2.0 ...................................................................................... 38
Configuration 2.1 ...................................................................................... 42
Configuration 2.2 ...................................................................................... 46
Configuration 3.1 ...................................................................................... 48
Configuration 3.2 ...................................................................................... 50
Configuration 4.1 ...................................................................................... 52
Commissioning procedure ......................................................................... 55
Commissioning certificate ......................................................................... 58
Service record ................................................................................................... 60
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Quick Start
1.
Select which type of system you wish to install. See flowchart overleaf.
2. Determine where the various system components should be installed.
3. Mount the system components.
4. Connect the sensors, RF receiver, Heat pump and other system components to the systems
controller according to your selected system configuration.
5. Power up the system controller and perform a factory reset by pressing the RESET button, select
language and hydraulic configuration.
6. Set the date, time and essential system parameters according to the selected system
configuration.
7. Set the DHW program if required.
8. Ensure room unit is communicating with the system controller. If not, perform binding
procedure.
9. Set time/temperature profile in accordance with customer’s wishes.
10. Review all parameter settings according the chosen system configuration.
11. Test the system
12. Complete commissioning documentation and show end user how to operate the room unit.
13. Leave all literature with the customer.
14. Return Commissioning certificate to Hitachi in order to activate warranty.
Important Considerations
Pre-Installation
Identify suitable space for Heat Pump, Domestic Hot Water (DHW) cylinder and heating buffer tank.
Consider location of key plumbing components bearing in mind requirement for maintenance access.
Availability of suitable water supply.
Availability of suitable electricity supply, N.B. many supply distribution authorities require notice prior to
connection heat pumps.
Installation
As Quick start above
Post-Installation
Thorough explanation of system and heating controls to customer at handover.
Registration for Renewable Heat Incentive (RHI) or other benefits that may be eligible if applicable.
Registration of system with the Micro-generation Certification Scheme (MCS).
Servicing
Recommend annual servicing to check for debris in strainer and ensure heat pump airways are clear.
Replace batteries in room unit.
Always check system parameters have not been altered and check alarm history for anomalies.
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Introduction
Where correctly installed and maintained the Yutaki heat pump will provide adequate heating and hot
water all year round. It is important that the correct system configuration (docking option) has been
chosen by the system designer to ensure that comfort is maintained for the customer under typical
outdoor temperatures and hot water usage conditions relevant to the geographical area and household
demands.
The performance of Micro-generation heat pump systems is impossible to predict with certainty due to
the variability of the climate and its subsequent effect on both heat supply and demand. HACE
endeavors to provide the best available information at all times but is given as guidance only and should
not be considered as a guarantee.
The system designs outlined in this manual include provision for heating only (Configuration H), heating
and hot water generation using the Heat Pump alone (Configuration 1.0 and 1.2), the Heat Pump with
electric backup (Configuration 2.0, 2.1 and 2.2) and the Heat Pump with boiler backup (configuration
3.2 and 4.1). There is also an option to include Domestic Hot water only from the boiler and heating
from heat pump with boiler support (configuration 3.1).
The defrost cycle uses heat from water in the heating system. The designs outlined assume that there
will be sufficient system water volume and flow available at all times for the Heat Pump to defrost. The
defrost cycle will normally take water from the buffer tank but where this is not sufficient or no buffer
tank is fitted, there must be sufficient water volume with no restrictions of the heating water flow by
closed zone valves, underfloor heating actuators or thermostatic radiator valves.
If in doubt, please contact HACE Technical Support for further advice.
The table shown below provides theoretical information about the available volume of system water for
defrosting and the reduction of temperature of the system water during the defrost operation.
Model
Water temperature drop
RHUE-3AVHN1 RHUE-3A(V)HN1-HM RHUE-4AVHN1-HM RHUE-5A(V)HN1-HM RHUE-6A(V)HN1-HM
5°C
232 212 276 342 410
10°C
118 106 138 171 205
1
5°C
77 71 92 114 137
20°C
58 53 69 86 103
2
5°C
46 42 55 68 82
Note: The values shown above are based on theoretical installation conditions. Values can vary for different
hydraulic circuit configurations. Installers should recalculate these values for the real conditions of their installation.
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Domestic Hot Water (DHW) is normally maintained at around 50°C in the hot water cylinder thus
preventing the growth of harmful bacteria even in normal use. However, protection against the growth
of legionella bacteria is provided by periodically raising the water temperature in the DHW cylinder.
The heat pump provides a variable power output depending on the heating and hot water load. The
power output variation is achieved by a variation of speed of the compressor and fan systems within the
heat pump. The control of the heat pump power is maintained at optimum efficiency and effectiveness
by the Advanced System Controller (ASC). Heating and hot water load is determined automatically by
the use of sensors which monitor the outside air temperature, indoor temperature and water system
temperatures.
Full heat loss calculations in accordance with BS EN 12831 must be carried out by the system designer in
order to accurately determine the size of the required Heat Pump.
At the time of writing, planning permission is not generally required for air source heat pumps in the
United Kingdom. However, planning considerations and calculations must be carried out in accordance
with MCS 020 which can be found on the following web site:
http://www.microgenerationcertification.org/mcs-standards/installer-standards
Note: The Yutaki heat pump has been approved under the Micro-generation Certification Scheme
(MCS). The installer of the equipment must also be accredited under MCS for the appropriate
technology and the installation must meet the requirements of MCS in order to be eligible for any
benefit under the Renewable Heat Incentive (RHI) scheme.
Electricity supply authorities may need to be informed prior to installation of current using equipment.
Always check with your local distribution company before planning the installation.
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List of Accessories
The following accessories are available from Hitachi in order to assist the installer in meeting design
requirements. Installers may choose to source their own parts at their discretion. In order to ensure
equipment warranties are preserved it is important that installers satisfy themselves that such parts will
allow the system perform within specified parameters.
Accessory
Drawing symbol
Notes
Wilo ERP
Approved buffer
loading pump
Additional
accessories are
required in order to
fit the this pump
inside the Heat Pump
casing as hydraulic
fittings within the
heat pump are
different from
standard UK
plumbing sizes.
Pump adaptor kit
n/a
Anti-vibration
feet
Must be
securely
anchored to the heat
pump and to the
ground.
Heat Pump
compatible
DHW Cylinders
with G3 kit
Available as
180L,
210L, 250L (solar
option), 300L (solar
option)
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4 Port Buffer
tank
Available as
50L,
95L,
150L,
210L
Flexible hose kit
Contains 2 x hoses
with 1” BSP M thread
and fibre washers.
Full bore
isolation valve
Full bore
isolation valve
with strainer
3 Way Valve
1 x 3 port zone valve
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Hydraulic
separator
Only to be used in
systems with
sufficient open flow
water volume to
meet the
requirements of the
Heat Pump.
Electric Water
-
Heater
Must be fitted in
accordance with
Hitachi
recommendations
for pump and bypass
as required.
2nd temperature
kit
Contains Mixer valve
and sensor to enable
control of a low
temperature heating
circuit
Advanced
System
Controller Pack
Refer to Advanced
System Control
Reference Manual
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Key installation considerations
Installations within 4km of the Sea or Ocean will require an anti-corrosion protection treatment. In such
circumstances the Blygold option must be chosen when the Heat Pump is ordered.
The heat pump must be mounted externally away from obstructions which might prevent smooth air
flow through the unit. Mountings shall be such as to prevent noise and vibrations from causing nuisance
to building occupants or neighbouring property’s. The heat pump should be sited away from sleeping
areas and shall be sited away from the influence of strong winds.
Provision shall be made for maintenance access to the unit, particularly from behind and to the right
looking at the machine from the front.
Provision shall be made for the safe removal of waste evaporative water from the heat pump which is
produced during the defrost cycle. This is particularly important during winter months when ground
freezing may occur. The run off from the defrost process must be directed away from foot paths, patios
and roadways.
Pipework external to the building shall be insulated against extreme temperatures in order to prevent
loss of heat from the system.
Freeze protection of working units is not required due to the automatic frost protection function of the
heat pump. Caution must be exercised under cold conditions as the heat pump may start unexpectedly.
In exceptional circumstances or when there is a possibility of power loss during cold conditions, it is
recommended that an anti-freeze solution be added to the heating system in order to provide freeze
protection.
All electrical wiring shall be suitably protected against accidental damage and ingress of moisture to any
part of the heat pump.
The heat pump may be connected to the heating system via a heating buffer tank which provides a
ready supply of heated water for the heating system to draw on at any time. The water in the buffer
tank will be heated to a temperature that is set by the operating parameters of the system and is
dependent on the outside temperature, the desired comfort level within the building and the selected
heat curve within the controller.
It is important that the end user understands that the temperature of the buffer set by the above
parameters may limit the flow temperatures within the heating system irrespective of local control
settings at radiator or under-floor heating zone control level.
Systems that do not include a buffer tank are reliant on the rapid delivery of heated water from the heat
pump and any backup heat sources in order to meet heating demand.
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Domestic hot water heating is prioritised over space heating by the controller during the 2 periods that
are set in the system controller. This priority may be periodically disabled by the use of the Tariff/Timer
input on the system controller in order to prevent excessive reductions in heating capacity if the hot
water temperatures cannot be achieved by the heat pump during the normal hot water generation
cycle.
Diversion of water to heating or hot water generation is facilitated by the system controller and carried
out by the use of pumps and/or valves. Where possible it is recommended that pumps only are used in
order to maintain system reliability and in order to maximise operating efficiency and minimise the
likelihood of breakdown between system servicing.
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Transportation
The heat pump must be transported in its original packaging in an upright position only.
If lifted by hoist or crane observe the following precautions.
• Use suitable wire lifting ropes only
• Protect the unit against abrasion from the lifting ropes
• Lift smoothly
• When handling manually, ensure adequate personal are involved to prevent damage or injury.
• Do not remove wooden base from unit until final installation
• Always lift using suitable slings
• The Centre of gravity of single fan units is 440mm from base of heat pump
• The Centre of gravity of twin fan units is around 550mm from base of heat pump
• See the service manual Page 12 for greater detail of weight distribution
Installation space
Sufficient space shall be provided around the heat pump to allow fresh clean air to be drawn from the
rear of the unit, through the fan(s) and expelled safely from the front. Cold air expressed from the front
of the unit must not be allowed to re-circulate to the rear of the unit. Access must be made available
from the sides and above the unit for maintenance purposes.
A minimum space of 200mm must be left between rear of the heat pump and the nearest wall. Ideally
this distance will be greater than 200mm in order to allow sufficient access for maintenance of the unit.
Any roof or structure connected to the rear wall shall be at least 1000mm above the heat pump.
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A clear space of at least 600mm shall be made in front of the heat pump. Plants or foliage in front of the
heat pump may provide a good source of visible protection and absorb some of the high frequencies
generated by the inverter but at this distance, should not be allowed to grow above half the height of
the unit. The air expressed from the front of the heat pump shall often be at sub zero temperatures
which may damage such flora .
Ideally 500mm should be made available either side of the heat pump to facilitate efficient air flow and
allow maintenance access. In exceptional conditions, this space may be reduced to the absolute
minimums expressed in the service manual, although performance may be affected and maintenance
access may be compromised.
The heat pump should be sited away from sources of falling leaves, build up of snow and strong winds.
Details of space limitations for more complex spaces are shown on page 13 of the Service manual.
Mounting
Ideally the heat pump shall be mounted on a concrete base of dimensions greater than 440mm x
1250mm. The base shall be separated from any dwelling and shall provide drainage for any condensate
run off. A typical base is shown below.
Drainage must be made available from the slab for rainwater runoff and heat pump condensate.
Condensate is fresh water without contaminants but may be very cold and subject to freezing during
cold weather. Such run off must be directed away from walk ways and shall ideally be to gravel
surrounding the concrete base to aid natural drainage.
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The heat pump should be fitted with anti-vibration mounts. After levelling the heat pump on the base,
the mountings must be secured to the heat pump and the ground to prevent accidental tipping of the
machine. Additional protection must be provided between the rear of the machine and the nearest wall
to further safeguard against accidental tipping due to unforeseen loads being applied to the top or rear
of the machine. Where rigid fixings are used, anti vibration elements must be provided between the
bracket and the wall.
Further mounting options and detailed dimensions of the heat pump feet are given on page 14 of the
service manual.
Optional parts are available to assist operation in positions exposed to wind and snow. Details of these
parts are given in the service manual on pages 16 to 20.
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Hydraulic installation
Where the heat pump is not delivered with an internal buffer loading pump fitted, the pump and
adaptor accessories must be obtained. Please check options when ordering.
The buffer loading pump flow direction varies on different models. It is essential that water flow is in the
correct direction. Extreme care must be taken when fitting the pump accessory to ensure correct pump
operation.
Where the buffer loading pump is not fitted inside the heat pump, it may be fitted elsewhere but as
close to the heat pump as is reasonably practicable.
The heat pump must be fitted with two flexible hoses which must be connected directly to the heat
pump in order to prevent vibrations from the unit affecting adjacent buildings and internal pipe-work.
Heated water flows from the heat pump water outlet and returns from the system to the heat pump
water inlet. These connections are at the rear of the machine as shown below.
N.B.
Water outlet is heating flow
Water inlet is heating return.
NOTE: Failure to observe correct connection of flow and return pipe-work will prevent correct system
operation and may result in damage to the heat pump.
The strainer must be fitted immediately after the flexible hose from the water inlet to prevent ingress of
particles to the heat pump heat exchanger. The strainer must be securely fixed on both sides with
brackets on solid pipe-work. Positioning of the strainer must be such that easy access for regular
inspection and cleaning of the filter element can take place. Full bore isolation valves must be fitted in
both the flow and return pipe-work in order to facilitate strainer removal with minimal loss of system
water. A combined isolation valve and strainer is available from HACE as an accessory.
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All external pipe-work, valves and fittings must be properly fixed, soundly insulated and weather proof.
Identification of flow and return pipe-work and accessibility of strainer and isolation valves is essential
for ease of maintenance.
All pipe-work from the heat pump to the system components (Hydraulic separator, DHW cylinder, Buffer
tank etc.) must be 28mm copper in order to minimise pressure drop and maintain system efficiency
under worst case operating conditions. All remaining pipe-work shall be selected and sized according to
system design considerations as set out in this document, local requirements and regulations in force at
the time of installation.
Sensors must make a mechanically sound and thermally efficient connection to pipe-work and sensor
pockets. Use of thermal transfer (e.g. heat-sink) compound, mechanical fixings and aluminium tape are
recommended, surrounded by good quality thermal insulation.
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Advanced System Controller (ASC) pack
The Heat Pump is supplied with an Advanced System Controller pack. This comprises the following
components:
• Advanced system Controller (ASC)
• Terminal packs (1 white (power), 1 black (control and communications))
• Wire routing bar
• Safety covers x 2
• Temperature sensors x 2
• RF Receiver
• Remote RF room unit with batteries
• Manuals
Brief technical reference information about the hardware connections and operation of the ASC are
given in the reference manual accompanying this document.
Detailed Installation and usage instructions for the ASC and room unit are provided in the manuals
enclosed in the ASC pack.
A simple user guide for the operation of the Room Unit is provided at the end of this manual.
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Electrical installation
General
The installation of electrical systems comprise:
a) Power distribution
b) Power control
c) Monitoring and communication
All of the above elements must be considered at the planning stage in order for the installation to be
efficient and effective.
The Power distribution elements are there to make sure that power is available from the mains power
source or consumer unit and is available in a safe and protected manner to all aspects of the system.
All installations must comply with BS7671. The requirements of BS7671 always take priority over any
information implied or given in this document.
The Advanced System Controller distributes both power and control functionality to the system pumps,
valves etc. and provides mains power control to the cylinder immersion relay. Some control functions
between the heat pump and controller operate at mains voltage and hence it also falls within the power
control category.
The monitoring and communication wires are mainly extra low voltage and as such must be run
separately from the power and power control wiring.
Electrical power is generally required for the following system elements:
1) Heat pump
2) Advanced System Controller (ASC)
3) Cylinder immersion heater
4) Cylinder immersion relay
5) Additional heat sources and associated relays as required e.g. boiler, electric heater etc.
The wireless room unit is powered by batteries and does not require a mains power supply.
Each element should have a separate power system with suitable fuse protection. All system elements
shall be powered from the same phase and where split load consumer units are used and full isolation of
Neutrals cannot be guaranteed. All systems shall be powered from the same side of the consumer unit.
Where 3 phase units are installed, L1 shall be used for all control functions.
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The following table shows the power rating for each heat pump model.
Model
Power supply
Max. Voltage ()
Min voltage (V)
Max. Current (A)
RHUE
-
3AVHN1
1~ 230V 50Hz
253 207 21.8 (*18.5)
RHUE
-
3AVHN
-HM
1~ 230V 50Hz
253 207 21 (*18)
RHUE
-
4AVHN
-HM
1~ 230V 50Hz
253 207 21 (*18)
RHUE
-
5AVHN
-HM
1~ 230V 50Hz
253 207 29 (*26)
RHUE
-
6AVHN
-HM
1~ 230V 50Hz
253 207 32 (*29)
RHUE
-
5AHN
-HM
3N~ 400V 50Hz
440 360 14 (*11)
RHUE
-
6AHN
-HM
3N~ 400V 50Hz
440 360 18 (*15)
*Current excluding buffer loading pump
The cylinder immersion heater is rated at 3kW. A 13A fused outlet should be provided for this item.
All control circuits are relatively low power with the greatest of these being the circulation pumps. These
pumps may be powered from the system controller providing each accessory is rated at less than 3A and
that the total load on the system controller does not exceed 10 Amps.
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Example Power Distribution (minimum system configuration)
N.B. this does not show control wiring between units or more complex system designs which may
include additional heat sources and hence require additional isolation and protection devices
All low power ancillaries such as pumps, valves etc. derive power either from the heat pump in the case
of the buffer loading pump and the system controller in the case of all other equipment.
All ancillaries with a power consumption of greater than 3A or that would otherwise require a total
power derivation from the system controller of greater than 10A MUST be powered by an isolating relay
or contactor.
** Heating System Electrical Connections
Electrical wiring for heat distribution systems is outside the scope of this manual.
It is generally assumed that all heating control and power systems will be entirely separate from the
Heat Pump electrical system and as such additional circuits will be required. Local control of individual
elements of the heating system should reduce energy consumption by preventing the running of heating
circulation pumps when zones are up to temperature.
Where it is essential for the System Controller to ensure circulation, for defrost functions etc. where
there is no suitable buffer tank, the associated control function for at least one open flow heating
circulation pump must be derived from the Advanced System Controller (normally X1). This may be a
direct connection, via a relay or via a contact on the associated 2 port valve as applicable.
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Heat Pump Electrical Connections
Do not pass cables through the ventilation hole at the rear of the Heat Pump.
Do not pass cables through removable covers as this will prevent access for maintenance.
An access plate is provided at the front of the Heat Pump to allow power and control cables to enter the
machine.
If the case of the Heat Pump is drilled to allow for conduit entry, ensure that adequate protection is
made to prevent damage to internal parts. Ensure that suitable cable entries are used to prevent
corrosion of the machine covers and prevention of water ingress to the Heat Pump.
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Connections from the Heat Pump to the buffer loading pump and Advanced System Controller are
shown below.
Heat pump Connections as follows:
Power
TB1 Live, Neutral and CPC (Earth) connections to locally switched supply
Communications (See Inset Photo)
TB1 Terminal 1 to System controller C3 port Terminal 27 (extra low voltage)
TB1 Terminal 2 to system controller C3 port Terminal 28 (extra low voltage)
Caution. These terminals are adjacent to the main incoming power supply
Buffer loading (water circulation) pump
TB2 Terminal 17 to pump Live
TB2 Terminal 18 to pump Neutral
Earth Terminal to pump Earth
PTO
N.B. Accessory ATW
-
HPA-01 is
required if not already fitted in order
to enable communication link
between Heat Pump and Controller
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Heat pump Connections cont’d
Heat Pump On/Off remote switching
TB2 Terminal 6 to System controller X8 terminal 1 (230V)
TB2 Terminal 6 to System controller X8 terminal 2 (230V)
Heat Pump remote temperature control
TB2 Terminal 19 to System controller A1 terminal 1 (extra low voltage)
TB2 Terminal 20 to System controller A1 terminal 2 (extra low voltage)
Note: Mains voltage and extra low voltage cables must be run separately
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Heating System hydraulics
The Heat Pump may, with careful design, be connected to a heating system directly without the use of a
buffer tank or hydraulic separator. However, such a connection is outside the scope of this manual.
Before considering such an installation, technical advice must be sought from HACE.
The hydraulic separator, also known as a low loss header, is a useful device which enables balancing of
different heating devices and heating circuits which may have their own pumps whilst minimising the
effect on the performance of the heat pump primary loading circuit. It is physically very small in
comparison to a buffer tank.
The down side of a hydraulic separator is that it has very little water volume and so the volumes of
water required in order to satisfactorily achieve good heat pump performance without cycling and
adequate defrost performance will require a relatively large volume of open flow heating system water
(uncontrolled by valves etc. ). Further, the primary heating circuit pump needs to be controlled by the
Advanced System Controller which may lead to the heating water circulation being operational when
the property heat load is otherwise satisfied. The ‘no load’ function of the controller mitigates this to a
certain degree but this is not always satisfactory.
A suitably sized buffer tank resolves these problems but will of course require allocation of appropriate
installation space.
Ideally, the system will be considered as 2 separate entities:
1)
The Heat Pump and associated controls which will heat the buffer tank with some unrestricted
heating area in order to allow the Advanced System Controller room unit to feed back room
temperature and hence properly regulate buffer water temperature.
2) The heating system which will only run circulation pumps for heating zones requiring heat based
on local thermostat settings.
Control of flow temperatures in low temperature heating circuits can still be affected by the ASC and if
required, up to 2 heating circulation pumps can also be controlled directly by the ASC.
Where buffer loading is achieved through a 2 port valve and HC1 is required to provide heating
circulation, the circulation pump should be powered from a separate supply via the valve contacts in
order to prevent over-loading of the ASC output.
Where possible, except when a Hydraulic separator is used, HC1 circulation should be derived from local
heating controls. It is important to ensure however, that buffer loading is timed to take place when
there is likely to be a heating demand from any part of the system.
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The diagrams, connections and settings set out on the following pages provide examples of heating
system layouts and relevant connections to the Advanced System Controller. This information is
provided for guidance only. Detailed system design must always be carried out in order to ensure
correct system operation.
Heating circuit examples - 1
Single circuit unmixed
(essential settings)
Parameter
Description
Menu
P101 Heating
circuit 1 type 0
(direct
) 03>01
P102 HC1 OTC heating curve (set as required for system and building type)
04>01>00
P103 HC1 Heating system emitter type 0= UFH, 1=Radiator, 2=Convector
04>01>01
System Configuration (other settings)
P104
HC1
Room compensation settings
04>01>02
P105, P106
HC1 minimum and maximum supply set
-
points
04>01>03
-04
Inputs to system controller
U1 System supply temperature sensor
(May be on supply to Buffer or in buffer, see configuration options for detail)
Extra
Low voltage
Outputs from system controller
X1 Heating circuit 1 circulation pump if not derived from local heating controls
230 Volts
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Heating circuit example 2
Single circuit unmixed (essential settings)
Parameter
Description
Menu
P101 Heating
circuit 1 type 0 (direct)
03>01
P102 HC1 OTC heating curve (set as required for system and building type)
04>01>00
P103 HC1 Heating system emitter type 0= UFH, 1=Radiator, 2=Convector
04>01>01
System Configuration (other settings)
P104
HC1 Room
compensation settings
04>01>02
P105, P106
HC1 minimum and maximum supply set
-
points
04>01>03
-04
P108 Mixing valve running time (see manufacturers data)
04>01>06
Inputs to system controller
U1 System supply temperature sensor
(See configuration drawing for position)
Extra Low voltage
Outputs from system controller
X1 Heating circuit 1 circulation pump
230 Volts
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Heating circuit examples – 3
*HC1 pump
must be powered from X1 if no buffer tank is fitted
2 circuit
– 1 mixed (essential settings)
Parameter
Description
Menu
P101 HC1 type 1
(mixing)
03>01
P201 HC2 type 1 (direct)
03>02
P102 HC1 OTC heating curve (set as required for system and building type)
04>01>00
P103 HC1 emitter type 0= UFH, 1=Radiator, 2=Convector
04>01>01
P202 HC2 OTC
heating curve (set as required for system and building type)
04>02>00
P203 HC2 emitter type 0= UFH, 1=Radiator, 2=Convector
04>02>01
System Configuration (other settings)
P104
HC1 Room compensation settings
04>01>02
P105, P106
HC1 minimum and maximum
supply set
-
points
04>01>03
-04
P108 Mixing valve running time (see manufacturers data)
04>01>06
P204 HC2 Room compensation settings
04>02>02
P205, P206
HC2 minimum and maximum supply set
-
points
04>02>03
-04
P208 Mixing valve running time (see
manufacturers data)
04>02>06
Inputs to system controller
U1 System flow sensor (See Configuration drawing)
Extra Low voltage
U2 Heating Circuit 1 flow sensor
Extra Low voltage
Outputs from system controller
X1 Heating circuit 1 circulation pump
(alternatively powered from local heating
system, see text)
230 Volts
X2:X3
Heating circuit 1 mixing valve
230 Volts
X4 Heating circuit 2 circulation pump (alternatively powered from local heating
system, see text)
230 Volts
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Heating circuit examples - 4
N.B. This system is not compatible with boiler operation as X5:X6 are used for boiler control
*HC1 pump must be powered from X1 if no buffer tank is fitted
2 circuit
– both mixed (essential settings)
Parameter
Description
Menu
P101 Heating circuit 1
type 1 (mixing)
03>01
P201 Heating circuit 2 type 2
(mixing)
03>02
P102 HC1 OTC heating curve (set as required for system and building type)
04>01>00
P103 HC1 Heating system emitter type 0= UFH, 1=Radiator, 2=Convector
04>01>01
P202 HC2 OTC heating
curve (set as required for system and building type)
04>02>00
P203 HC2 Heating system emitter type 0= UFH, 1=Radiator, 2=Convector
04>02>01
System Configuration (other settings)
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P104
HC1 Room com
pensation settings
04>01>02
P105, P106
HC1 minimum and maximum supply set
-
points
04>01>03
-04
P204 HC2 Room compensation settings
04>02>02
P205, P206
HC2 minimum and maximum supply set
-
points
04>02>03
-04
Inputs to system controller
U1 System flow
sensor (See Configuration drawing)
Extra Low voltage
U2 Heating Circuit 1 flow sensor
Extra Low voltage
U4 Heating circuit 2 flow sensor
Extra Low voltage
Outputs from system controller
X1 Heating circuit 1 circulation pump
(alternatively powered from
local heating
system, see text)
230 Volts
X2:X3
Heating circuit 1 mixing valve
230 Volts
X4 Heating circuit 2 circulation pump
(alternatively powered from local heating
system, see text)
230 Volts
X5:X6
Heating circuit 2 mixing valve
230 Volts
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Configuration H – Heat pump for heat only. No additional heat sources.
Configuration H
-
System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 1.2
Reset menu
System Configuration (other settings)
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
Inputs to system controller
- Configuration 1.0
U1 System supply temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration 1.0
X1 Heating
circulation pump
(Optional local control)
230 Volts
X8 Heat pump on/off
230 Volts
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Configuration 1.0 – Heat pump with control valves, DHW with Legionella control immersion heater
and heating buffer tank. No additional heat sources.
Configuration 1.0
- System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 1.2
Reset menu
P301 DHW type 2 (pump) N.B. 2 port valves are treated as pumps for the
purpose of this configuration
03>03
P310 DHW Electric heater type 1 (Enable heater)
03>04
P309 DHW Anti legionella protection
04>03>07
System Configuration (other settings)
DHW
loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
Inputs to system controller
- Configuration 1.0
U1 System supply temperature sensor
Extra Low
voltage
U5 DHW temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration 1.0
X1 Heating circulation pump
230 Volts
X7 DHW valve
230 Volts
X8 Heat pump on/off
230 Volts
X9 DHW Immersion heater relay control
NOTE: Do NOT connect the immersion heater to the controller without an
intermediate relay. See below.
230 Volts
DANGER
(External power
source to X9,
Isolate elsewhere)
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Configuration 1.2 – Heat pump with hydraulic separator, pumped DHW with Legionella control
immersion heater. No additional heat sources.
N.B. X1
must be used for Heating circulation with a suitable open flow volume and flow rate with this
configuration
Configuration 1.2
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 1.2
Reset menu
P301 DHW type 2
(pump)
03>03
P310 DHW Electric heater type 1 (Enable heater)
03>04
P309 DHW Anti legionella protection
04>03>07
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost
protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
Inputs to system controller
– Configuration 1.2
U1 System supply temperature sensor
Extra Low voltage
U5 DHW temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration 1.
2
X1 Heating circuit 1 circulation pump
230 Volts
X2:X3
Heating circuit 1 mixing valve
230 Volts
X4 Heating circuit 2 circulation pump
230 Volts
X5:X6
Heating circuit 2 mixing valve
230 Volts
X7 3 port valve
230 Volts
X8 Heat pump
on/off
230 Volts
X9 DHW Immersion heater relay control
NOTE: Do NOT connect the immersion heater to the controller without an
intermediate relay. See below.
230 Volts
DANGER
(External power
source to X9,
Isolate elsewhere)
A1 Heat
pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Configuration 2.0 – Heat pump with heating buffer, valve control DHW with Legionella control
immersion heater and Electric heating backup
Configuration 2.0
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System
Configuration 2.2
Reset menu
P301 DHW type 2 (pump)
03>03
P310 DHW Electric heater type 1 (Enable heater)
03>04
P309 DHW Anti legionella protection
04>03>07
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and
parameters
04>03>00
-16
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
P801
– P810 Electric heater parameters
04>06>00
-09
P009 Electric heater manual release on heat pump fault
03>06
Inputs to system controller
– Configuration 2.0
U1 System supply temperature sensor
Extra Low voltage
U5 DHW temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration
2.0
X1 Heating circuit 2 port valve
230 Volts
X5:X6
3 stage electric heater relay
control
NOTE: Do NOT connect the buffer immersion heater to the controller without
an intermediate relay. See example below.
230 Volts
X7 DHW 2 port valve
230 Volts
X8 Heat pump on/off
230 Volts
PTO for remaining connections
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X9 DHW Immersion heater relay control
NOTE: Do NOT connect the immersion heater to the controller without an
intermediate relay. See below.
230 Volts
DANGER
(External power
source to X9,
Isolate elsewhere)
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Page 40
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Configuration 2.1– Heat pump with 3 port mixer valve heating via buffer DHW with Legionella control
immersion heater and Electric heating backup
Configuration 2.1
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 2.1
Reset menu
P301 DHW type 1 (valve)
03>03
P310 DHW
Electric heater type 1 (Enable heater)
03>04
P309 DHW Anti legionella protection
04>03>07
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost protection parameters
04>00>
00-01
P003 Summer switch off
04>00>02
P801
– P810 Electric heater parameters
04>06>00
-09
P009 Electric heater manual release on heat pump fault
03>06
Inputs to system controller
– Configuration 2.1
U1 System supply temperature sensor
Extra Low
voltage
U5 DHW temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration 2.1
X5:X6
3 stage electric heater relay control
NOTE: Do NOT connect the electric heater to the controller without an
intermediate relay. See example below.
230 Volts
X7 Heating / DHW 3
port valve
230 Volts
X8 Heat pump on/off
230 Volts
PTO for remaining connections
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X9 DHW Immersion heater relay control
NOTE: Do NOT connect the immersion heater to the controller without an
intermediate relay. See below.
230 Volts
DANGER
(External power
source to X9,
Isolate elsewhere)
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Page 44
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Configuration 2.2 – Heat pump with hydraulic separator, pumped DHW with Legionella control
immersion heater and electric heating backup
Configuration 2.2
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 2.2
Reset menu
P301 DHW type 2 (pump)
03>03
P310 DHW Electric heater type 1 (Enable heater)
03>04
P309 DHW Anti legionella protection
04>03>07
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
P801
– P810 Electric heater parameters
04>06>00
-09
P009 Electric heater manual release on heat pump fault
03>06
Inputs to system controller
– Configuration 2.2
U1 System supply temperature sensor
Extra Low voltage
U5 DHW temperature sensor
Extra Low voltage
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Outputs from system
controller
– Configuration 2.2
X1 Heating circuit 2 port valve
230 Volts
X2:X3
Heating circuit 1 mixing valve
230 Volts
X4 Heating circuit 2 circulation pump
230 Volts
X5:X6
3 stage electric heater relay control
NOTE: Do NOT connect the electric heater to the controller without an
intermediate relay. See example below.
230 Volts
X7 DHW pump
230 Volts
X8 Heat pump on/off
230 Volts
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PTO for remaining connections
X9 DHW Immersion heater relay control
NOTE: Do NOT connect the immersion heater to the controller without an
intermediate relay. See below.
230 Volts
DANGER
(External power
source to X9,
Isolate elsewhere)
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Page 48
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Configuration 3.1 – Heat pump with boiler only for hot water and heating support
Configuration 3.
1 – System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 3.1
Reset menu
P301 DHW type 0 (off)
03>03
System Configuration (other settings)
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
P701
– P716 Boiler operating
parameters
04>05>00
-15
P008 Boiler
manual release on heat pump fault
03>05
Inputs to system controller
– Configuration 3.2
U1 System supply temperature sensor
Extra Low voltage
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Outputs from system controller
– Configuration 3.2
X5 Heating circuit
valve 230 Volts
X7 DHW pump
230 Volts
X8 Heat pump on/off
230 Volts
X9 Boiler on / off
230 Volts
Danger, power
supplied from
external source.
Isolate elsewhere
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Configuration 3.2 – Heat pump with boiler support , and DHW
Configuration 3.2
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration
3.2 Reset menu
P301 DHW type 2 (pump)
03>03
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost protection parameters
04>00>00
-01
P003 Summer switch off
04>00>02
P701
– P716 Boiler operating parameters
04>05>00
-15
P008 Electric heater manual release on heat pump fault
03>05
Inputs to system controller
– Configuration 3.2
U1 System supply temperature sensor
Extra Low voltage
U5 DHW temperature sensor
Extra Low
voltage
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Outputs from system controller
– Configuration
3.2
X7 DHW valve
230 Volts
X8 Heat pump on/off
230 Volts
X9 Boiler on / off
230 Volts
Danger, power
supplied from
external source.
Isolate elsewhere
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Configuration 4.1 – Heat pump with boiler mixer support , 2 heating circuits and DHW
Configuration 4.1
– System Configuration (essential settings)
Parameter
Description
Menu
Conf System Configuration 4.1
Reset menu
P301 DHW type 2 (pump)
03>03
System Configuration (other settings)
DHW loading times
01
P302
– P317 DHW set
-
point s and parameters
04>03>00
-16
P001
– P002 Frost protection
parameters
04>00>00
-01
P003 Summer switch off
04>00>02
P701
– P716 Boiler parameters
04>05>00
-15
P008 Boiler manual release on heat pump fault
03>05
Inputs to system controller
– Configuration 4.1
U1 System supply temperature sensor
Extra Low
voltage
U2 Heating circuit 1 supply temperature
Extra Low voltage
U5 DHW temperature sensor
Extra Low voltage
U6 Boiler temperature sensor
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Outputs from system controller
– Configuration
4.1
X1 Heating valve
230 Volts
X5:X6
Boiler bypass /
mixing valve
230 Volts
X7 DHW valve
230 Volts
X8 Heat pump on/off
230 Volts
X9 Boiler on / off
230 Volts
Danger, power
supplied from
external source.
Isolate elsewhere
A1 Heat pump 0
– 20mA control
Extra low voltage
C2 RF Receiver
Extra Low voltage
C3 Heat pump communications signal
Extra Low voltage
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Commissioning procedure
Do
Not apply power to the heat pump or controller
1. Complete checklist at the end of this document
2. Remove Heat pump Connections C3, X8 and A1 from the controller
3. Apply power to the controller and set parameters
Initial setting for the heat pump RHUE-(3-6)A(V)HN-HM units as follows:
Enter ‘Service’ mode using code 6565.
Press to scroll through the menu items
Go down to 04 ‘Parameters’
Press OK to select the menu item (enter sub-menu)
Go down to 04>04 ‘Heat pump’
Press OK to select the menu item (enter sub-menu)
Change the parameters as follows:
P603 55°C
P604 55°C
P606 55°C
After changing the parameters return to the main screen by pressing the “Esc”
button.
4. Using the Installer code 3636, enter ‘Installer’ menu and set/check all system parameters for the
chosen configuration.
5. From menu 8 select each system output in turn and set then reset to ensure expected operation
of each device connected.
E.G. Select menu 8 ‘Outputs’
Press ‘set’ to get to menu 08>00 HC1 pump
Press ‘set’ to enable change of output state
Press or to change state
Press ‘set’ to engage new state
Check that HC1 pump is now running
Press ‘set’ to enable change of output state
Press or to change state
Press ‘set’ to engage new state
Check that HC1 pump is now stopped
Repeat process for all connected accessories
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6.
Select Menu 08>12 and set to 1 which will clear all manual relay settings
7. Press ‘ESC’ and make sure that ‘hand’ icon is not displayed.
8. Remove power to ASC
9. Re-connect heat pump connections C3, X8 and A1
10. Power heat pump
11. Power ASC
12. Check alarm status on controller and take corrective action if any alarms persist
13. Ensure system is calling for heat and hot water
14. Monitor flow rate for heating, hot water and defrost functions
15. Systematically check all system elements for correct operation
16. Hand over all documentation to customer
17. Complete system commissioning documents and return to Hitachi
Page 56
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Hitachi Yutaki Nominal flow rate requirements
Based on a delta T of 5 degrees C.
Ensure the flow meter setting is correct before finalising commissioning.
RHUE
-3
AVHN1
RHUE
-3
AVHN-HM
RHUE
-4
AVHN-HM
RHUE
-5
AVHN-HM
RHUE
-6
AVHN-HM
RHUE
-5
AHN-HM
RHUE
-6
AHN-HM
22 l/m 20 l/m
27 l/m
34 l/m
40
l/m 34 l/m
40 l/m
Page 57
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Commissioning Certificate - Page 1 of 3
Installer name
(Print name)
Commissioning
engineer name
(Print name)
Installer Company
Name
Address
Phone
Commissioning
engineer Company
Name
Address
Phone
Customer name
Heat pump
Model
Site address
Heat pump serial no.
Installation details
Heat pump location
Buffer tank /
Hydraulic separator
location
Cylinder location
Pipe size/ type from
heat pump to cylinder
and buffer.
Heating system
description
e.g. ufh, radiators etc.
Ground
First Other (state detail)
Heat pump
configuration reference
(delete as appropriate)
1.0 1.1 1.2 2.0 2.1 2.2 3.0 3.1 3.2 4.1 Other (describe)
Additional heat source
Make
Model
Capacity (Kw)
PTO
Page 58
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Commissioning Certificate – Page 2 of 3
Installation Checklist
Heat pump fixed on solid surface
Away from sleeping areas and neighbouring property
Away from influences of strong wind
Away from possible snow build up
Away from dripping water
sources
Ambient temperature sens
or away from direct sunlight
Minimum distance of 500mm from rear wall
Maintenance access from all sides and above
Free passage of air around heat pump
Positioned where cold air from unit shall not cause a nuisance
Anti vibration mountings fitted
Anti tipping fixings on base fittings
Anti tipping fixings fitted from top of machine to nearby supporting structure
Safe drainage of condensate away from walkways
Flexible pipe
-
work from heat pump to building
Insulation of external pipe
-
work
Physical protection of electrical wiring
Electrical separation of power and control wiring
Ingress protection of installed electrical wiring and external switches to IP65 or better
Flow and return pipes identified
Full bore heat pump isolation valves fitted
Strainer correctly fitted on heating return pipe
-
work, suitably fixed and accessible for regular
maintenance
Potential air trap
points have automatic air vents fitted
G3 components fitted where required
Expansion vessel
s charge
set
Vessel 1 type .................colour...................charge..........
Vessel 2 type .................colour...................charge..........
Vessel 3 type .................colour...................charge..........
System has been flushed and cleaned in accordance with BS7593
Corrosion inhibitor added
(Type, Quantity)
Bypass valves set appropriately
System filled and vented with all valves open
Suitably rated Circuit breaker and cable for heat pump
Suitably rated Circuit breaker and cable for immersion heater
Suitably rated fuses in spur outlet for Advanced System Controller
Suitably rated fused supplies to all other ancillary components
Heating and hot water sensors correctly fitted with good
thermal contact and mechanically
sound
Outside sensor (if fitted) mounted away from direct sunlight and on North facing wall.
Electrical installation complies with BS7671
Installation complies with Building regulations
Page 59
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Heat pump commissioning certificate – Page 3 of 3
Operational Test Results
DHW heating time
DHW final temperature
Flow rate during DHW
Heat pump flow
temperature (DHW)
Heat pump return
temperature (DHW)
Heat pump flow
temperature (Heating)
Heat pump return
temperature (Heating)
Flow rate during
heating
HC1 flow temperature
(Heating)
HC1 return temperature
(Heating)
HC2flow temperature
(Heating)
HC2 return temperature
(Heating)
Flow rate during defrost
DHW Time settings
Period 1
Period 2
Room Unit settings
Time & Temp.
e.g. 6am & 21°C
Period 1
Period
2
Period 3
Period
4
Period 5
Period6
Commissioning
engineer notes
Operation and system controls demonstrated to customer
Manufacturers literature left with customer
Signature of commission engineer ………………………………………………………. Date………………………………………….
Customer signature …………………………………………………………………………. Date………………………………………….
Page 60
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Service Record
Service 1
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 2
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 3
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 4
Date
Engineer name
Company
name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 5
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 6
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer signature
Customer
signature
Page 61
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Service Record
Service 7
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 8
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 9
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 10
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 11
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer
signature
Customer
signature
Service 12
Date
Engineer name
Company name
Contact telephone
Engineer
comments
Engineer signature
Customer
signature
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