Marstair ECO+ Operating instructions

56208004-01
ECO+ Systems
Split Heat Pump Installation & Owners Manual
Thank you for selecting an ECO+ heat pump split system.
To ensure many years satisfactory operation, this owner’s manual should be read carefully before
using the heat pump. After reading, store the manual in a safe place and refer to it for questions on
use.
The ECO+ heat pump is designed for domestic and light commercial applications.
This instruction supersedes
any other instructions found
inside this unit.

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Contents
Filters 2
Safety Precautions 3
Remote Controller 4
Operating instructions 6
Maintenance 8
Protection 9
Troubleshooting 10
Installation Instructions 11
Filters
Power Sleep
Sleep Indicator
It lights up during the
set sleep function.
Red Power Indicator
It lights up when
power supply is on.
Green Run Indicator
It is on during
operation
Yellow Timer Indicator
It lights up during
the set time
Signal Receives
Receive signal from
the remote controller.
Timer Run

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Safety Precautions
Notes: 1. For the purpose of innovation and improvement, these products are subject to change without prior notice.
2. The air conditioner is not a toy please keep children away from equipment!
Power supply must be in accordance
with the rating plate requirement.
Failure to comply may result in serious
faults, hazards or fire.
Keep the power supply MCB or fuse
clean. Ensure connections to the MCB
or fuse are secure; failure to do so
ma
y
result in electric shock or fire.
Don’t use the power supply circuit
breaker to turn the unit off. Do not pull
the plug out using the cable.
Do not tangle, pull or stress the power
supply cord as damage may result in
electric shock or fire.
Never insert a stick or similar objects
into the unit. Such actions may lead to
damage to the unit and injury.
It is advisable to direct the airflow away from
occupants and cool the room as a whole.
Always turn the air conditioner off via
the remote controller before turning off
the power.
Should repairs become necessary,
they should only be carried out by
qualified personnel.
Ensure the airflow is directed away
from all heat sources.
Do not touch the operating buttons
when your hands are wet.
Do not put any objects on the outdoor
unit or obstruct the airflow.
The equipment must be earthed
(grounded) in accordance with local
regulations. Qualified personnel only
should carry out electrical wiring.

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Remote Controller
How to insert batteries
(1) Remove the battery cover by sliding in the direction of the
arrow.
(2) Insert new batteries (2 x AAA) none rechargeable making sure
the polarity is correct
The remote controller will default to Heat Pump mode if no buttons
are pressed for 10 seconds, at which point the ‘Heat’/’Cool’ flashing
will stop.
Alternatively:
Press any button on the remote controller while “Heat” is
indicated to preset the controller for Heat Pump operation.
Notes:
If the remote controller is preset for cooling only, heating commands will
not be possible.
Refit the battery cover by sliding it back into position.
Storing the Remote Controller
The remote controller may be stored on a wall using the holder supplied.
Using the remote controller
To operate the Eco+ heat pump, point the controller at
the receiver in the middle of the unit.
The controller will operate up to 7m away from the unit
if pointed directly at the receiver.

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Remote Controller
(Picture shown maybe different from remote controller enclosed but all functions are the same)

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Operating Instructions
With the remote controller pointing towards the air conditioner:
.
•If you don’t like FEEL mode, try changing to HEATING, DRY or COOLING instead.
FEEL mode operation procedure
Note:
There will be a delay when changing
mode during unit operation.
The fan may stop during the changeover

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Operating Instructions
The timer may be set to start the system operation during your absence, to create comfortable conditions on
your return.
It can also be set to turn the system off after a programmed delay, eg when you go to bed.
Note: After setting the timer, check that the YELLOW TIMER INDICATION light is visible on the indoor unit.
TIMER mode

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Maintenance

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Protection

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Troubleshooting
The following examples may not always be due to a malfunction; please check before calling an
engineer.

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Installation instructions
Typical installation:

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Installation instructions
The indoor unit is supplied with mains power cables pre-
connected.
Remove cover to access the terminal block. Route
interconnecting cable through the rear of the unit and
connect to the terminal block as per table. Reverse cover
and fasten with screws provided.
Route all interconnecting cable along side the pipework to
the outdoor unit.
Indoor unit location.
•Ensure there is no obstruction to the air outlet
and air can be directed to all areas of the room.
•Ensure adequate access for pipe work.
•Space between ceilings and walls to be as in
the diagram on page 11.
•Ensure the air filter can be easily removed.
•Install more than 1m away from electronic
equipment such as televisions.
•Keep as far away as possible from
fluorescent light fittings.
•Do not obstruct the return air inlet.
•Ensure the wall is strong enough to support
the weight of the unit.
•Mount level to ensure proper drainage.
Outdoor unit location.
•Install in a well-ventilated area with no obstructions
to the air outlet.
•Ensure the distance from the rear of the unit to the
wall is as per the diagram on Page 11.
•Install on a fixed base to prevent excessive vibration.
•If sited above the indoor unit fit an oil trap.
•Mount on a flat and level base.
Indoor
Brown Terminal L
Blue Terminal N
White Terminal 1
G/Yellow Earth Screw
Connecting the cable
Selecting the best location

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Installation instructions
1. Installing the mounting plate
•Determine the location for the indoor unit.
•Place the mounting plate against the wall ensuring it is level.
•Mark the wall and drill holes to suit rawl plugs and screws to be used.
•Ensure the mounting plate is securely fixed then drill a hole through the wall for the pipes.
(Note: The shape of the mounting plate may differ from that shown in the diagram but installation is similar).
2. Drill a hole for the pipes for rear exit.
•Determine the position for the pipework
hole according to the location of the
mounting plate.
•Drill a hole through the wall ø50-75mm. The hole
should slope down from inside to outside.
•Install a sleeve through the hole to protect
both the pipes and the wall.
3. Indoor unit pipework installation
•Run the pipework through the hole in the wall and connect to the outdoor unit.
•If the pipework is to exit the indoor unit through the side, cut the unloading piece to suit as in the
diagram below.
•After connecting the pipework, install and connect the drain hose, then connect the wiring.
•When all connections are made, wrap the pipes, cables and drain hose together with thermal
insulation tape.
Indoor unit installation

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Installation instructions
NOTE
•Pipework joints - thermal Insulation:
Insulate the interconnecting pipework
with thermal insulation and tape any joints.
•Pipework - Thermal Insulation:
a. Run the drain hose under the pipework.
b. Insulate with at least 6mm thick insulation material.
Note: The drain hose is supplied by the installer
•The drain hose should be installed with
a fall away from the unit.
Ensure there are no kinks in the drain hose
Terminate the drain hose where it cannot
become immersed in water.
Ensure any joints in the drain hose are well
insulated.
•When the pipework is to be routed to leave
the right hand side of the unit, pipes, drain
hose and cables should be insulated as above
and secured within the unit using the piping
fixer.
•Pipework connection:
Finger-tighten indoor unit pipework, then use two spanners
as table below.
Pay special attention to the allowable torques (as shown in the table)
to prevent the pipes, connectors and flare nuts from being deformed
and damaged.
Torque (kg/m) Nut A/F (mm)
Model Liquid
line Suction
line Liquid
line Suction
line Liquid
line Suction
line
ECO+ 26 1/4” 3/8” 1.8 3.5 17 22
ECO+ 35 1/4” 1/2” 1.8 5.5 17 24
ECO+ 50 1/4” 1/2” 1.8 5.5 17 24

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Installation instructions
4. Connecting the cable
•Indoor unit
All cables are connected to the indoor unit by the
installer.
•Outdoor unit
1. Remove the access panel. Connect the
cables to the terminals as shown below.
•
•
•
•
•
2. Secure the cables with the cable clamp.
3. Connect as table below.
4. Refit the access panel.
Caution:
1. Always provide a dedicated MCB or fuse.
2. Follow the wiring diagram on the inside of the access door.
3. Use the correct cable sizes, as table below if extending the cables.
4. Check all terminations are secure.
5. Use of an earth leakage circuit breaker is recommended.
Cable specifications
Model Power cable Interconnecting
power cable
ECO+ 26 1.0mm² x 3core
(L,N,E) 0.75mm² x 4core (L,N,1,E)
ECO+ 35 1.0mm² x 3core
(L,N,E) 0.75mm² x 4core (L,N,1,E)
ECO+ 50 1.0mm² x 3core
(L,N,E) 0.75mm² x 4core (L,N,1,E)
If the supplied interconnecting cable is used but is too short it should be extended using a
waterproof connection box (to local appropriate standards).
Outdoor
Brown Terminal L
Blue Terminal N
White Terminal 1
G/Yellow Earth Screw

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Installation instructions
1. Install the drain port and drain hose.
Condensate will drain from the outdoor unit
when it operates in heating mode. In order
to protect the environment and prevent
hazardous conditions, install a drain port and
hose to direct the condensate to a suitable drain.
2. Install and fix the outdoor unit.
Fix with rawlbolts (or similar) to a flat level surface
that is strong enough to bear the weight of the
unit. Alternatively use wall mounting brackets (55021100)
3. Pipework connections.
Remove the valve caps from the 2-way and
3-way valves.
Connect the pipes to the relevant valve and tighten
to the correct torque. See page 16
The system must be evacuated prior to being operated.
Outdoor unit installation
Evacuation

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Installation instructions
How to evacuate the system:-
1. Unscrew and remove caps from 2 and 3 – way valves.
2. Unscrew and remove cap from service port on the suction valve.
3. Connect low pressure hose of refrigeration gauge set, to the service port.
4. Connect between refrigeration gauge set and vacuum pump
5. Start vacuum pump and run until a vacuum of 10mm Hg absolute is reached.
6. With vacuum pump still running close the low-pressure valve on the gauge manifold. Then stop
the vacuum pump.
7. Open the 2 – way valve ¼ turn then close it after 10 seconds. Check tightness of all joints using
liquid soap or an electronic leak detector.
8. Turn 2 and 3 – way valves to the fully open position.
The suction gauge should register a pressure of 10-12b depending on ambient temperature.
To test the system, run the indoor unit in cooling mode at high speed.
Typical low pressures 6-6.5b.
9. Remove all hoses replace and tighten all valve caps.
NEVER RUN THE UNIT IN HEATING MODE WITH THE GAUGES CONNECTED
NOTES
•Please read this manual before installing and using the ECO+ heat pump system.
•Do not let air enter the refrigeration system or discharge refrigerant when moving the equipment.
•Test run the system after finishing the installation, and record details of its operation.
•The type of fuse used on the indoor unit controllers is 50T, with rating 3.15A,T, 250V.
•The system fuse is to be provided by the user according to the current at maximum power input.
Use of an alternative over-current protective device is acceptable.
•The electrical isolator must be accessible after the installation of the appliance, to allow easy
isolation.
If not possible, connect the supply via a double pole isolator with contact separation of at least
3mm, placed where it is accessible following completion of the installation.

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Technical Specifications(R410A-DC Inverter)
Model No. Eco+26 Eco+35 Eco+50
Type heating pump heating pump heating pump
Control type remote remote remote
Class in Cooling A A A
Class in Heating A A C
Btu/h 9000(3800~10500) 12000(5200~13500) 18000(5500~20000)
Rated cooling capacity KW 2.6(1.1~3.1) 3.5(1.5~4.0) 5.2(1.6~5.8)
Btu/h 10250(4200~13000) 13800(5500~16500) 20000(4500~24000)
Rated heating capacity KW 3.0(1.2~3.8) 4.0(1.6~4.8) 5.8(1.3~7.0)
EER for cooling Btu/h.w;
W/W 11.5; 3.4 11.3; 3.3 11.0; 3.2
COP for heating W/W 3.7 3.6 3.2
Moisture removal Liters/h 0.8 1 2
High dB(A) 37 38 42
Med. dB(A) 35 36 40
Indoor noise
level at cooling Low dB(A) 33 34 38
Outdoor noise level dB(A) 52 55 58
Electrical Data
Power supply 220-240V~/50Hz/1P
Voltage Range V 155~265 155~265 165~265
Cooling A 3.6(1.4~4.8) 4.9(1.9~6.2) 7.8(2.6~10.4)
Rated current Heating A 3.8(1.4~5.7) 5.2(1.9~7.7) 8.3(2.5~11.3)
Cooling W 780(300~1050) 1060(400~1350) 1630(520~2250)
Rated input Heating W 820(300~1220) 1120(400~1700) 1830(470~2450)
A
nnual energy
consumption kwh (cooling) 390 530 815
Max current A 6.5 9.2 11.5
Max input W 1400 2000 2500
Refrigerating System
Refrigerant/Charge Gram
R410A／800g;780g R410A／1080g R410A／1500g
Fan System
Indoor air circulation
Cooling/heating m3/h 450/480 480/510 750/850
Cooling rpm 1330/1100/950 1330/1150/1000 1300/1180/1050
Heating rpm 1300/1100/900 1320/1100/900 1250/1120/950
Dry rpm 900 950 1050
Indoor fan
speed H/M/L
Sleep rpm 900 950 1050
Indoor fan motor output W 12 12 23
Outdoor fan speed rpm 860 860 700/900
Outdoor fan motor output W 31 31 68
Connections
Refrigerant coupling
Gas Inches 3/8'' 1/2'' 1/2''
Connecting
Pipe Liquid Inches 1/4'' 1/4'' 1/4''
Connecting
Wiring Size x Core number 4×1.5 4×1.5 4x1.5
Others
Suitable area m29-16 15-23 25-40
Net dimensions Indoor mm 770x240x180 770x240x180 898x280x202
(W x H x D) Outdoor mm 760x552x256 760x552x256 820x605x300
Indoor kg 8.5 8.5 11
Net weight Outdoor kg 30 34 42
Packing
dimensions Indoor mm 863x325x270 863x325x270 955x365x298
(W x H x D) Outdoor mm 863x598x376 863x598x376 955x650x438
Indoor kg 10.5 10.5 14
Gross weight Outdoor kg 33 37 46

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