HISEER VR2002 Owner's manual
GEOTHERMAL HEAT PUMP
Installation ,Operation &Maintenance Manual VR2002
V.201212
The Installation of this unit is to adhere to all Local
Building Codes and Standards
1
Index
Pre-Installation.............................................................................................................2
Installation Location and Positioning ........................................................................4
Buffer Tank...................................................................................................................5
System Overview Vertical Ground Loop System......................................................6
System Overview Horizontal Ground Loop System.................................................7
System Overview Ground Water with Intermediate Heat Exchanger System ......8
System Overview Floor Heating Only........................................................................9
System Overview Heating ,Cooling & Hot Water................................................... 11
System Overview Multiple Units in Series Cascade Connection...........................15
Installation ..................................................................................................................17
Electrical Connection.................................................................................................19
Controller....................................................................................................................31
Commissioning and Adjusting ..................................................................................39
Warning and alarm....................................................................................................42
Trouble shooting.........................................................................................................46
Maintenance ...............................................................................................................47
Dimension ...................................................................................................................48
Components ................................................................................................................50
Pressure drop curve ...................................................................................................56
Temperature and sensor resistance table.................................................................60
Technical specifications .............................................................................................63
2
Pre-Installation
Important Site Instructions
The installation, commissioning, inspection, maintenance and repairs must only be
carried out by a qualified person.
All electrical wiring must be completed by a licensed electrical contractor in
accordance with the appropriate standards.
The drilling work requires a permit from your local council.
The heating system and heat source must be properly designed and dimensioned
to ensure an efficient operation. It is particularly important to keep water flow
temperatures as low as possible.
The minimum heating water flow rate through the heat pump must be assured in
all operating states of the heating system.
Movement and storage
The unit must not be transported, moved or stored at greater than a 30° angle from the
upright position. Install and store the unit in a dry area. They are not rated for outdoor
use.
Safety
If a refrigerant leak occurs, remove the complete charge using a recovery unit and
store the refrigerant in mobile container.
Note: care is to be taken as the refrigerant can breakdown due to high temperature,
these refrigerants by-products are dangerous.
Once the leak has been repaired recharge the unit with the correct filling weight and
the type found on the unit’s nameplate.
Pre-Installation
3
Note: ensure the correct refrigerant gas is used to recharge the unit as an incorrect
gas can cause damage beyond repair to the compressor.
Do not use oxygen to purge lines or to pressurize a unit for any purpose.
Oxygen gas reacts violently with oil, grease and other common substances. Use only
refrigerant or dry nitrogen for testing.
Never exceed the specified maximum operating pressures.
Do not un-weld or flame cut the refrigerant lines including any refrigerant circuit
components until the entire refrigerant (liquid and vapour) has been removed from
unit. Traces of vapour should be displaced with dry nitrogen.
Refrigerant in contact with an open flame will produces toxic gases.
Ensure that the necessary safety protection equipment is available when servicing.
Have the appropriate fire extinguishers for that system.
Do not siphon refrigerant.
Avoid spilling liquid refrigerant onto the skin or splashing it into the eyes. Use safety
goggles. Wash any spills from the skin with soap and water. If liquid refrigerant enters
the eyes, immediately and abundantly flush the eyes with water and consult medical
advice.
Note: Never apply an open flame or live stream to a refrigerant container. This can
dangerously overpressure and cause an explosion.
Pre-Installation
4
Installation Location and Positioning
The unit must be installed in a protected area that is free from rain and water
penetration.
The unit must be installed on a solid level surface, preferably on a concrete pad
not connected to the main house slab foundation.
Allowances for good ventilation around the installation must be provided.
In normal operations to prevent condensation collecting on cold pipes the thermal
insulation of any cold components should be to a high level.
The unit will produce noise that is above the minimum 45 decibel rating.
Therefore the unit should be located so that it is well away from bedrooms, offices,
living areas or noise sensitive areas including neighbour’s bedrooms.
There must be suitable distances between the unit and the building to ensure
normal operation and enough room for maintenance requirements.
Installation Location and Positioning
5
Buffer Tank
A buffer tank is recommended to ensure a trouble free heat pump operation. A suitable
buffer tank can avoid excessive heat pump cycling (switching on and off).
The buffer tank provides a hydraulic separation from the volume flow in the heat
pump and heating circuits. The volume flow in the heat pump circuit remains constant,
even if the heating circuit volume flow is reduced by thermostatic valves.
If the total of the systems water volume is less than 12L/KW then a buffer tank should
be added to reduce the compressor from ON/OFF cycling. This will prolong the
compressor life span.
When a buffer tank is installed, the heating system will absorb energy from the buffer
tank first. To save energy consumption ,install the indoor pump P1 that is switched on
only when compressor is on. This is by changing EV01 to “1”.
RT sensor should be taken out of the unit and put into buffer tank’s sensor pocket. The
RT sensor is located at lower submerged sensor pocket of the plate heat exchanger.
The RT sensor in the buffer tank will control the tank temperature by starting and
stopping the compressor and pump together as required.
If RT sensor has not been changed to buffer tank’s sensor pocket when EV01 has been
changed to “1”, when the unit reaches its set temperature ,the compressor will stop,
pump P1 will also stop accordingly due to EV01 being set to “1”. When this
occurs ,there is no water circulation between the heat pump and buffer tank. RT will
keep its stopped temperature ,not the buffer tank water temperature. RT then can not
switch on compressor and pump P1 even when buffer tank water is getting cold.
Changing the RT sensor into the buffer tank will avoid this problem.
Buffer Tank
6
System Overview Vertical Ground Loop System
Name
Description Location
Name Description Location
P2 Outdoor side water
pump External OT Outdoor temperature
sensor Internal
SAK
Safety valve External FL Particle filter External
BK Brine tank/expansion
tank External
Systems Overview (Outdoor side)
7
System Overview Horizontal Ground Loop
System
Name
Description Location
Name Description Location
P2 Outdoor side water
pump External OT Outdoor temperature
sensor Internal
SAK
Safety valve External FL Particle filter External
BK Brine tank/expansion
tank External
Systems Overview (Outdoor side)
8
System Overview Ground Water with
Intermediate Heat Exchanger System
Name
Description Location
Name Description Location
P2 Outdoor side water pump
External OT Outdoor temperature
sensor Internal
P3 Ground water pump External FL Particle filter External
BK Brine tank/expansion
tank External SAK Safety valve External
FW Water flow switch External FI filter External
DP Intermediate heat
exchanger External
Principle of Operation:
An intermediate heat exchanger (DP) should be installed to prevent ground water
damaging or contaminating the unit’s internal heat exchanger. A plate heat exchanger
that is able to be cleaned is recommended for this situation that can be disassembled
for cleaning and repair or any damage plates can be replaced. Anti-freezing
measurement must be adopted to protect the ground water circuit.
Systems Overview (Outdoor side)
9
System Overview Floor Heating Only
Name
Description Location Name
Description Location
P1 Indoor side water
pump External RT Indoor side inlet water
temperature sensor Internal
EXP
Expansion tank External ST Indoor side outlet water
temperature sensor Internal
AIV
Air vent valve External STo Outdoor side outlet water
temperature sensor Internal
SAK
Safety valve External ET Exhaust gas temperature sensor
Internal
FS Automatic water
supplement valve External FL filter External
Systems Overview (Indoor side)
Table of contents
Other HISEER Heat Pump manuals
Popular Heat Pump manuals by other brands
Mitsubishi Electric
Mitsubishi Electric PUZ-SWM60VAA Service manual
Dimplex
Dimplex LI 16I-TUR Installation and operating instruction
Carrier
Carrier WSHP Open v3 Integration guide
TGM
TGM CTV14CN018A Technical manual
Carrier
Carrier 38MGQ Series installation instructions
Kokido
Kokido K2O K880BX/EU Owner's manual & installation guide
Viessmann
Viessmann VITOCAL 300-G PRO Type BW 2150 Installation and service instructions
Carrier
Carrier 48EZN installation instructions
Viessmann
Viessmann KWT Vitocal 350-G Pro Series Installation and service instructions for contractors
Ariston
Ariston NIMBUS user manual
Weishaupt
Weishaupt WWP L 7 Installation and operating instruction
GE
GE Zoneline AZ85H09EAC datasheet