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