GDH GDH70-Air User manual

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INSTALLATION AND OPERATING INSTRUCTIONS
GDH70-Air Cooling & Heating
GDH120-Air Cooling & Heating
GDH240-Air Cooling & Heating

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SAFETY INSTRUCTIONS
Do not use this unit if it has been dropped or damaged in any way.
•This unit should not be installed in any area where flammable liquids or
vapors may be present. Do not store or use gasoline or other
combustible
materials or liquids near or adjacent to this heat pump.
•Check the rating plate on the unit before installation to make certain the
voltage shown is the same as the electricity supply to the heat pump.
•The unit must be connected only to a properly grounded electrical supply.
•Do not fail to properly ground the unit.
•This unit should only be serviced by qualified service personal.
•Always shut off electric power before making unit connections or
removing any panels and be extremely careful to avoid injury.
•Components may have sharp edges which can cut you.
•Tubing and compressor contain high pressure refrigerant and they should
not
be exposed to high temperature or be punctured.
•Water temperature over 52 °C (125 °f) can cause severe burns or death
from scalding. Feel the water before bathing or showering. Children,
disabled, and elderly are at highest risk of being scalded.
•Tampering with the thermostat, heater, elements or electrical connections
is dangerous and may result in serious injury. Only properly trained,
qualified service personnel should service these components. Do not
attempt to modify or change this heat pump in any way.
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FEATURES
l SUMMARY
GDH family is environment friendly, high efficiency air source heat pump,
provides both domestic hot water and house heating. Intelligent self-adjusting
control on managing house heating and domestic hot water production. The
GDH family heat pump can be combined to radiator or underfloor heating
systems. Offering different options for house heating installations to satisfy all
different favorites.
l EASY OPERATION
Most of settings are finished by the manufacturer. System senses the leaving
water temperature, and regulate the leaving hot water temperature according to
inner setting automatically. The end user just need to press ON/OFF button, then
the system shall be managed by the controller properly.
l EXCELLENT PERFORMANCE
High efficiency scroll compressor, high quality plate heat exchanger, control fan
speed, precise refrigerant flow control by expansion valve with unique inner
programme. All these assure the GDH famility the most excellent performance at
variable climate.
l EASY INSTALLATION
All connections of refrigeration circle parts have been put in place by the
manufacturer, the connection requested on site is just to connect the heat pump
to hydraulic circle.
l EXCELLENT SAFETY CONTROL
Over-pressure, low pressure protection, over-load protection.
Switch on or off system automatically according to the feedback of return water
temperature. Available with anti-freezing function in winter.
The controller surveil the status of each component, each occurred malfuntion
shall be sent to the indoor display.
l WIDE RANGE WORKING CONDITION
The GDH heat pump can work at -25 °C ~ 35 °C.
l EASY MAINTENANCE
The system has self-diagnose programme. Any malfunction occurred shall be
indicated through special code on the screen of the indoor display, so the cause
of malfunction can be shoot out easily.

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CONTROLLER FEATURES
The GDH200 controller is a specialized heat pumps controller including the
complete cooling circle. This controller can easily be adjusted to the most various
heat pump conditions. Furthermore an additional electric heating can be
controlled depending on time and temperature. Of course it has a defrost function
for air-water machines and a cooling function for all types. All actuators and
sensors are operated from the GDH200 or scanned and processed.
The controller consists of a built-in part and a remote operating unit, either a built-
in device or a wall mounting.
Integrated functions
•Control of the heat pump
•brine-to-water
•Automatic defrosting
•2 heating circuits
•(outdoor temperature
compensated)
•Switching to cooling mode
•DHW preparation
•Circulation pump control
•Storage tank management
•Cascade management
•Energy management
•Measurement of heat yield
(optional feature)
Variations and equipment
•16 outputs for the control
of valves or pumps
•12 sensor inputs
•1 input or output for set
points
•6 optocouplers
•2 inputs for pressure
sensors
•eBus interface
GDH200
Heat pump controller
GDH200
Display Air- Unit
GDH200
Display Air-Split Unit

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DIMENSIONS GDH70-Air & GDH120-Air GDH240-AIR

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PRE-INSTALLATION
The heat pump should never be stored or installed on its side. Upright
transportation is recommended. If it becomes necessary to transport the heat
pump on its side, the manufacturer recommends that the unit be in the upright
position for a minimum of two hours prior to operation. Failure to follow these
instructions may result in damage to the heat pump.
After removing the unit from the crate/carton, immediately remove the
panels and inspect for any damage that might have occurred during shipment.
Report concealed damage immediately to the transportation company and
request inspection.
The electric power source must be the same voltage and phase as shown on the
rating plate. Line and low voltage wiring must be done in accordance with local
codes or the national electric code.
The heat pump must be installed by authorised installation engineers and the
installation must follow the applicable local rules and regulations as well, as
these installation instructions described in this manual.
We reserve the right to change the specifications within this publication in whole
or in part without prior notice. This brochure is to be used as a general guide and
does not form any part of a contract or is binding in any way. We reserve the
right when necessary, or at our discretion to use alternative suppliers or
components manufactured by other suppliers.

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INSTALLATION
•The heat pump should be mounted level on a vibration absorbing pad
slightly larger than the base to provide isolation between the unit and
floor
•Connect the heat pump with your water pipes (DN25) – inlet and outlet water
•Install a circulation water pump direct after the outlet water
•Connect the circulation pump with the heat pump
•Connect the controller panel with the two wire
•Put the water tank sensor into your water tank
•If the heat pump installed into south side, please use the second outdoor
temperature sensor. Change the existent outdoor temperature sensor.
The new one is to install and to put it into the north side. The outdoor
temperature sensor is not to install into the sun.
Compressor Time Delay: Be aware there is a 3 minutes time delay.

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ELECTRIC INSTALLATION
GDH70-AIR
GDH120-Air & GDH240-Air

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GDH200 CONTROLLER INSTALLATION

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APPENDIX: ELECTRICAL WIRING DIAGRAM
GDH70-AIR

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GDH120-AIR

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GDH240-AIR

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DIMENSIONS GDH70-AIR / GDH120-AIR

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TECHNICAL DATA
Type GDH70-Air GDH120-Air
Certificate and protection CE / IP24 CE / IP24
Installation location Indoor / Outdoor Indoor / Outdoor
Operation temperature limits
Air ºC -25 to +35 -25 to +35
Heat water flow ºC Up to 60 Up to 60
Heating capacity / COP
Outlet water temp. A10/35 9.20 kW / COP 4.3 15.90 kW / COP 4.1
Outlet water temp. A7/35 8.50 kW / COP 3.9 14.80 kW / COP 3.8
Outlet water temp. A2/35 7.10 kW / COP 3.3 12.10 kW / COP 3.4
Outlet water temp. A-7/35 6.30 kW / COP 2.8 9.70 kW / COP 2.7
Cooling capacity / COP
Outlet water temp. A30/18 4.5 kW / COP 3.0 9.2 kW / COP 2.9
Sound pressure level at distance dB(A) 34 34
Heat carrier flow nominal m3/h 1.5 2.4
Internal pressure drop heat carrier kPa 10 15
Air flow m3/h 2900 5800
Compressor type Scroll Scroll
Refrigerant R404A kg 1.9 2.6
Control Voltage V 230 230
Supply Voltage 230V 1-N, 50 HZ 400V 3-N, 50 HZ
Nominal power consumption at A2/W35 KW 2.4 3.9
Starting current A 90 or 20 with soft starter 60 or 25 with soft starter
Nominal current A 24.0 12.5
Nominal current at A2/W35 A 10.4 7.7
Device connection to heating system Inch G1 1” external G1 1” external
Type of defrosting Reverse cycle Reverse cycle
Dimensions
Size (H X W X D) mm 1.500 x 790 x 650 1.500 x 790 x 650
Weight kg 150 180

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TECHNICAL DATA
Type GDH240-Air
Certificate and protection CE / IP24
Installation location Indoor / Outdoor
Operation temperature limits
Air ºC -25 to +35
Heat water flow ºC Up to 60
Heating capacity / COP
Outlet water temp. A10/35 31.80 kW / COP 4.1
Outlet water temp. A7/35 29.60 kW / COP 3.8
Outlet water temp. A2/35 24.20 kW / COP 3.4
Outlet water temp. A-7/35 19.4 kW / COP 2.7
Cooling capacity / COP
Outlet water temp. A30/18 21.3 kW / COP 2.8
Sound pressure level at distance dB(A) 42
Heat carrier flow nominal m3/h 4.8
Internal pressure drop heat carrier kPa 30
Air flow m3/h 11600
Compressor type 2x Scroll
Refrigerant R404A kg 5.2
Control Voltage V 230
Supply Voltage 400V 3-N, 50 HZ
Nominal power consumption at A2/W35 KW 7.8
Starting current A 2x 60 or 2x 25 with soft starter
Nominal current A 25
Nominal current at A2/W35 A 15.4
Device connection to heating system Inch G1 1” external
Type of defrosting Reverse cycle
Dimensions
Size (H X W X D) mm 1.500 x 1.380 x 650
Weight kg 360

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