RED A10-UHE User manual

Installation and User Manual:
Heat pump models:
−A10-UHE
−A16-UHE
Including:
−Manifolds MAN-P1 –P5
−Hot water tanks INC 200 –250
Covering software revisions:
−Indoor controller to - v2.9
Issue January 2020

CONTENTS
1Introduction........................................................................................................... 1-1
1.1 General Information....................................................................................... 1-1
1.2 Hazards and Precautions................................................................................. 1-2
1.3 Safety Features............................................................................................... 1-4
1.4 Heat Pump fundamentals and intended operation.......................................... 1-5
2Heat Pump and Hot Water Tank installation requirements ..................................... 2-7
2.1 Heat pump and distribution manifold system requirements............................ 2-7
2.2 Tank system requirements.............................................................................. 2-7
3Option Packs.......................................................................................................... 3-9
4Dimensions and technical information ................................................................. 4-11
4.1 Heat pump model data................................................................................. 4-11
4.2 Distribution manifold options....................................................................... 4-15
4.3 Domestic hot-water cylinder options ............................................................ 4-17
5Unpacking the Product......................................................................................... 5-19
6Mechanical Installation layout Drawings .............................................................. 6-21
7Installation of heat pump..................................................................................... 7-24
7.1 Installation location of heat pump ................................................................ 7-24
7.2 Transportation brackets................................................................................ 7-26
7.3 Heat pump plumbing and wiring connections ............................................... 7-27
7.4 Installing indoor controller and distribution manifold ................................... 7-31
8Indoor Controller ................................................................................................. 8-36
8.1 Indoor controller menu screens .................................................................... 8-37
9Heat pump commissioning................................................................................... 9-47
9.1 Filling the system.......................................................................................... 9-47
10 Installation of heat pump water storage tank..................................................... 10-51
10.1 Heat pump cylinder location....................................................................... 10-51
10.2 Heat pump tank hydraulic and wiring connections ...................................... 10-53
10.3 Electrical connections ................................................................................. 10-57
11 Commissioning the Tank .................................................................................... 11-59
12 Customer Care Centre Contact ........................................................................... 12-60

User’s Manual Code 001 Page 1-1 Rev 0819
1INTRODUCTION
Thank you for choosing a Renewable Energy Device (RED). This manual described the correct
installation and operation of the RED A10-UHE and A16-UHE Air source heat pump and the
RED INC-200 and INC-250 hot water storage tanks.
Please ensure that this manual and read, understood and retained for reference before
commencing the installation and that it is left with the end user once the installation is
complete.
No liability will be excepted by RED if the install or operation of the heat pump is not according
to the instructions within this document.
This manual can also be downloaded digitally from the support page found at www.red-
limited.com.
This manual describes the unpacking, safe handling, installation, fault finding and servicing of
the product along with user operation and setup.
1.1 General Information
Please ensure that the full system design and heat/hot water requirements are fully
understood before commencing installation of the heat pump or hot water tank. It is the
responsibility of the system designer to ensure that the correct RED heat pump, distribution
manifold and hot water tank is selected for the installation and in concordance with heat loss
and sizing calculations.
If you have any questions regarding any part of the installation of the heat pump after fully
reading this installation manual, please contact RED technical services.
If the instructions in this manual cannot be followed please stop the installation and contact
RED technical services for advices. Your warranty maybe voided if the installation is not in
accordance to the instructions explicitly given in this document.

User’s Manual Code 001 Page 1-2 Rev 0819
1.2 Hazards and Precautions
Please pay careful attention to the following points before commencing the installation or
any serving work.
a. The heat pump should not be powered on or run with the side panel, fan guard, louver
panel or indoor unit front cover removed.
b. Please be aware that heat pump components within the enclosed casings can be hot
enough to cause severe burns even after the unit has stopped operating.
c. The black electronics box does not require to be opened during install and should only
be ever opened by a RED trained engineer. The electric drive components contain
capacitors which remain live even after the power is isolated to the heat pump.
d. The fan mounted on top of the heat pump is powerful and could cause injury or
damage if it comes in physical contact with any obstacle.
e. The evaporator louver panels may need to be removed for cleaning, however the
evaporator fins are extremely fine and can cause cuts or be damaged easily.
f. During operation the evaporator can be extremely cold or hot depending on the cycle
condition. Never attempt to touch the evaporator at any stage during its operation
and never try to remove obstacles or ice from the louvers.
g. The heat pump should be transported to the installation site within the wooden crate
provided and kept upright and secure in transit. The pallet should only be lifted with
a pallet trolley or fork lift.
h. The heat pump must be lifted from the crate and positioned in the installation location
using the provided lifting equipment and brackets as described in section 5. A
minimum of two people is necessary to lift the heat pump and it should not be pushed
of trailed along the ground. The correct PPE should be used and correct manhandling
and lifting techniques should be employed to avoid risk of injury. Never attempt to
lift or move the heat pump without the correct assistance.
i. Only a trained and component person that fully understands the installation
requirements should every attempt to install the heat pump.
j. Under no circumstance should the sealed refrigerant circuit be tampered with in any
way. Care should be taken to avoid any cutting, burning or grinding near refrigeration
pipework. If a leak in the refrigeration pipework was to occur never attempt to stop
the refrigerant with your hand as if will cause severe burns and frost bite.
k. The heat pump must be installed so that it can be isolated both electrically and
hydraulically. The covers should never be removed from either the heat pump or
indoor unit without first isolating the appliances.
l. Ensure all pipework is correctly assembled and sealed before pressuring system to
avoid water leaks within the enclosed heat pump unit.
m. The electrical install must be carried out by an electrician in accordance to BS 7671 to
the latest edition and national standards and to the wiring diagram within the
document. In the event either the indoor controller or heat pump are not wired
correctly there is the possibility of casing serious harm or death, also the electrical
hardware can be damaged.
n. If for any reason a part required replacing, please contact RED and only ever use
original spares supplied.

User’s Manual Code 001 Page 1-3 Rev 0819
o. Only ever use R410A when charging the heat pump ensuring to fill as a liquid and to
the correct weight as per the data label on the product.

User’s Manual Code 001 Page 1-4 Rev 0819
1.3 Safety Features
The heat pump has several safety features built in to ensure that ensure that the product will
fail safe in event of unforeseen system failure or error state.
a. High pressure switch
b. This switch is integral to the refrigeration circuit and cuts power to the compressor
when a higher than allowable pressure is reached in the circuit. This will only happen
if there is an insufficient or blocked flow from or too the condenser from the home or
too high a return temperature from the house. Or in the unlikely event of a
component failure such as circulating pump or defrost valve.
c. Refrigerant temp sensor
d. A temperature sensor on the discharge pipe of the compressor ensures that the
refrigerant also stays at a safe operational temperature.
e. Blocked evaporator sensor
f. A differential pressure sensor is used to determine if the evaporator becomes blocked
for any reason. This may be due to debris blow by or leaves.
g. Water flow sensor
h. A flow sensor checks constantly that there is sufficient water flow through the heat
exchanger. If for any reason the flow was to become restricted or blocked from to the
heat pump condenser it can cause component failure, especially during defrost, when
it can cause freezing in the condenser. Air in the system pipework can cause air locking
in the heat exchanger which may require bleeding.
i. Fan rotation tachometer
j. An intelligent fan which used built in sensors to determine blockage and interference
is employed by the heat pump. Always isolated power to the unit before removing
the fan grill.
k. Sensor failure
l. There are several sensors within the heat pump unit and in the distribution manifold.
In the unlikely event that one of them was to fail smart algorisms within the controller
can recognise this and bring the heat pump to a safe error state.

User’s Manual Code 001 Page 1-5 Rev 0819
1.4 Heat Pump fundamentals and intended operation
The RED heat pump captures energy from the outside air and uses this energy to heat a wet
space heating system or hot water storage tank.
The advantage of the heat pump compared to alternative heating appliances is that it used
the free energy that surrounds us and our homes and so produces much more heat energy to
what it consumes in electrical energy. This energy that is in the air and can be extracted and
used by the RED heat pumps even down to as low as -20°C and is completely renewable and
clean. It gives the heat pump heating efficiency greater than any other heating technology
and more importantly zero emissions. This is all achieved through a transfer of heat from the
air to your home thanks to a thermodynamic cycle which utilizes the latency effect of a
refrigerant. RED have optimised this cycle and the components within the heat pump to give
maximum efficiency and capacity to bring optimal thermal comfort to your home. The basic
operation in heating mode is explained below.
The compressor works as a pump causing refrigerant gas to be compressed and hence flow
around the closed system. The condenser exchanges the heat from this hot compressed gas
into the heating circuit of the home heating system. This caused a state change in the
refrigerant from a hot gas to a warm liquid as the refrigerant condenses. An expansion valve
is used to increase the system efficiency in an economized system and operating range by
subcooling the warm liquid refrigerant to a cooler temperature whilst evaporating off a small
portion of the refrigerant back to the compressor. The main flow then enters the heating
expansion valve which expands the refrigerant into the evaporator as a cold liquid vapor. The
round coil and fan arrangement have been optimised to draw high energy air through the fins
and so that even at extremely low temperatures the low-pressure liquid vapor refrigerant can
Figure 1 Heat pump operation principals

User’s Manual Code 001 Page 1-6 Rev 0819
be boiled off. This liquid/vapor is boiled to become a superheated gas in the evaporator and
returns to the compressor to start the cycle over again.
Due to the nature of ASHP ice will form on the evaporator coil at low temperature operation.
However, the RED heat pump has been designed to defrost this ice, clearing the evaporator
coil quickly and efficiently. A reversing valve is used to switch the direction of refrigerant flow
around the closed circuit meaning that the iced-up evaporator coil becomes warms melting
the ice which drains away down the condensate drain pipe.
Figure 2 System layout showing refrigeration circuitry and heating pipe flow and return
Flow and return pipework
Refrigeration circuits

User’s Manual Code 001 Page 2-7 Rev 0819
2HEAT PUMP AND HOT WATER TANK INSTALLATION REQUIREMENTS
Before commencing the install please ensure the following requirements are met by the
existing heating and hot water services. If these are not met please ensure that the system is
upgraded to meet the requirements before or during the install. RED cannot guarantee the
performance of the heat pump if the installation does not comply to the minimum
requirements listed below. Please be aware that in the case of a new build or renovation, the
heating load will initially be much higher than specified as to dry out the building fabric.
2.1 Heat pump and distribution manifold system requirements
Please pay attention to the below requirements.
a. The heat pump must be installed with the distribution manifold as described in
Chapter 6.
b. The heat circuitry should be designed so that no trapped air pockets can form, and air
can vent from the highest point in the system.
c. A drain valve should be fitted at the lowest point of the heating system.
d. Each zone should have its own room thermostat which can be wired back to the heat
pump indoor controller. No other heating controls should be fitted including
thermotic radiator valves.
e. Zones should be feed from the distribution manifold with 25mm ID pipe (i.e. 28mm
OD copper)
f. The system should be flushed and clean before the install of the heat pump.
g. The primary return to the heat pump must have a filter strainer of not less than kV10.
h. The system should be designed to be pressurised to 3 bar and have correctly sized
sealed system kit installed with PRV set to release safely at 3 bar.
i. The zones and DHW plumbing should come back to a designated plant room/space
where the zone distribution manifold can be mounted. Zone manifold dimensions as
are found in Table 2.
j. The heat pump must be located outside and as described in Section 7.1.
k. The heat pump should be installed so that it can be both isolated hydraulically and
electrically.
l. The heat pump should be piped to the zone distribution manifold with DIN 32 or DIN
40 (depending on length of pipe run) pre-insulted pipe underground heating pipe or
insulated above ground pipe with no less than 0.4 W/mK heat loss.
m. Provision of a ducting from the mains supply and serial data cable from the indoor
controller to the heat pump must also be pre-installed.
2.2 Tank system requirements
Please pay attention to the below requirements.
a. Incoming mains water supply should always be capable of delivering a minimum flow
rate of 20 litres per minute at a dynamic pressure of 1.5 bar. If this cannot be achieved
a cold-water booster set should be installed to achieve this. It is also possible to use
a gravity fed system although flow rate performance will be significantly reduced.
b. Incoming mains water supply pressure should not exceed 3 bar. If the supply pressure
is greater than this a pressure reducer must be installed.

User’s Manual Code 001 Page 2-8 Rev 0819
c. The tank is designed for the use and production of potable hot water, and other usage
or modifications will invalidate all guarantees. The incoming mains water supply
should have a total hardness of less than 200mg/litre and a chloride content of less
than 300mg/litre. The heating water should have a pH value of between 6.5 and 8.5.
In instances where the water chemistry exceeds these levels a suitable and effective
water treatment should be installed. This should be designed and installed in such a
way as to minimise the risk of component and or system failure.
d. Any circuits supplying heat to the tank and connected to an external heat source
should be fully pumped (not applicable to the direct range). Gravity circulation is only
possible with the Triple range of tanks (secondary and tertiary heat supply circuits
only).
e. Pipework supplying the hot taps must be capable of withstanding minimum 6 bar
pressure.
f. Pipework supplying the hot taps must be capable of carrying water with a temperature
of up to 95°C.
If you choose not to fit a RED heat pump hot water tank, RED cannot guarantee the
performance or efficiency of the domestic hot water.

User’s Manual Code 001 Page 3-9 Rev 0819
3OPTION PACKS
The RED heat pump package options are specifically tailored to ensure that the heat pump
has maximum performance and cost saving benefits to the end user. Each package will
typically consist of a 10kW or 16kW heat pump plus the correct zone distribution manifold,
matching the required heating zones, plus a heat pump domestic hot water tank in either
200L or 250L, depending on the hot water demand from the install.
A10-UHE
A16-UHE
MAN-P1
MAN-P2
MAN-P3
MAN-P4
MAN-P5

User’s Manual Code 001 Page 3-10 Rev 0819
INC-200
INC-250
Please ensure that the kit that has been order is correct for the specific install and that the
manifolds meets the zone requirements of the property. Upon delivery or collection check
that your product matches your order and that all items are as requested and undamaged.
Once the delivery note has been signed claims for damaged or missing parts will not be
acknowledged.

User’s Manual Code 001 Page 4-11 Rev 0819
4DIMENSIONS AND TECHNICAL INFORMATION
4.1 Heat pump model data
Table 1 RED heat pump specification and dimensional data
Models
A10-UHE
A16-UHE
Type
Monoblock ASHP
Monoblock ASHP
Nominal output (kW)
10
16
ERP Average climate (Low flow temp)
A++
A++
Operating range (°C)
-20 ~ +35
-20 ~ +35
Dimensions of heat pump H x D (mm)
1620 x Ø780
1420 x Ø780
Dimensions of indoor display H x L x W (mm)
360 x 270 x 35
360 x 270 x 35
Weight (kg)
110
120
Noise at nominal capacity
63 dB(A)
64 dB(A)
Maximum flow temperature (°C)
65
65
Refrigerant type and charge weight (kg)
R410A, 2.9
R410A, 3.3
Electrical supply
230v/1ph/50Hz
230v/1ph/50Hz
Maximum current (A)
20
32
Pipe connections (mm)
28 copper
28 copper
Air discharge
Vertical
Vertical
COP at A7W35 (Low temp)
4.37 @ 8.40kW
4.66 @ 13.30kW
COP at A7W45 (Medium temp)
3.59 @ 8.40kW
3.76 @ 13.40kW
COP at A7W55 (High temp)
3.08 @ 8.40kW
3.25 @ 13.90kW
COP at A7W65 (Very high temp)
2.64 @ 8.50kW
2.77 @ 14.10kW
COP at A12W24
5.71 @ 2.04kW
8.17 @ 4.06kW
COP at A7W27
5.04 @ 3.65kW
6.05 @ 5.88kW
COP at A2W30
3.68 @ 5.04kW
3.66 @ 7.76kW
COP at A-7W34
2.69 @ 6.93kW
2.80 @ 12.0kW
COP at A-10W35
2.5 @ 7.80kW
2.58 @ 14.0kW

User’s Manual Code 001 Page 4-12 Rev 0819
Figure 3 Heat pump and controller dimensions

User’s Manual Code 001 Page 4-13 Rev 0819
Figure 4 heat pump assembly drawing

User’s Manual Code 001 Page 4-14 Rev 0819
Figure 5 Indoor controller assembly drawing

User’s Manual Code 001 Page 4-15 Rev 0819
4.2 Distribution manifold options
Table 2 Distribution manifold specifications and dimensions
Models
MAN-P1
MAN-P2
MAN-P3
MAN-P4
MAN-P5
Pumped zones (Inc DHW)
1
2
3
4
5
Dimensions L, H, W (mm)
495x525x
135
495x525x
135
495x525x
135
495x675x
135
495x825x
135
Heat pump flow and return
1”Male
1”Male
1”Male
1”Male
1”Male
Zone connections (mm)
28 Comp
28 Comp
28 Comp
28 Comp
28 Comp
Water Volume (L)
5.5
5.7
5.8
7.0
10.0
Weight (kg)
20Kg
22Kg
24Kg
30Kg
35Kg
Electric supply
230v/1ph
/50Hz
230v/1ph
/50Hz
230v/1ph
/50Hz
230v/1ph
/50Hz
230v/1ph
/50Hz
Maximum current (A)
5A
5A
5A
6A
6A
Figure 6 Distribution manifold dimensions

User’s Manual Code 001 Page 4-16 Rev 0819
Figure 7 Distribution manifold configuration

User’s Manual Code 001 Page 4-17 Rev 0819
4.3 Domestic hot-water cylinder options
Table 3 Hot water tank specifications and dimensions
Models
INC-200
INC-250
Volume (L)
200
250
Dimensions H, W, L (mm)
520, 520, 1650
520, 520, 1980
Dimension A (mm)
70
70
Dimension B (mm)
230
230
Empty weight (kg)
48
56
Full weight (kg)
250
308
Standing heat loss (W)
52
65
ErP rating
B
B
Heat pump coil maximum operating
pressure (bar)
3.0
3.0
Heat pump coil pressure drop at 15L/min
(mbar)
134
142
Domestic hot water coil maximum
operating pressure (bar)
3.0
3.0
Maximum permissible storage water
temp (°C)
95.0
95.0
Domestic water coil connections (mm)
22 tail
22 tail
Heat pump coil connections (mm)
22 Comp
22 Comp
Safety overflow
G3/4” F
G3/4” F
Emersion electric supply
230v/1ph/50Hz
230v/1ph/50Hz
Maximum current
16A
16A