▪
All hydraulic parts including field piping must be insulated to reduce heat loss and condensation.
▪
It is recommended to install the make-up water assembly to feed small quantities of water to the system automatically, replacing
the minor water losses and maintaining the system pressure.
▪
Drain taps must be provided at all low points of the system to permit complete drainage of the circuit for maintenance use.
▪
Make sure that the check valves are correctly installed in the system (field supply).
▪
Flush pipes out with clean water to remove contaminants in pipes during installation.
▪
The strainer(water filter) must be cleaned after flushing the pipes, and it should be cleaned periodically. Replace strainer when nec-
essary.
▪
Charging : Charge the water until a pressure of 1.5~2.0bar by using make-up water assembly(Field supply). (The water pressure
indicated on the manometer will vary depending on the water temperature) The nominal water pressure in the system should re-
main about 1.0 bar at all times to avoid air entering the water system.
▪
Air purging; Make sure that air should be vented from the system at start-up or after installing/ servicing. The air vent valve must be
opened during charging the water (at least 2 turns) in order to remove all air in the circuit, and a make-up water assembly allows
water into the system continuously.
▪
In case that the water piping would be located in a higher position than the air vent of the unit, it is necessary to add an additional
ones in the highest position of water circuit. The air vent should be located both where water temperatures are the highest and
where the height of pipes are the highest.
▪
Always use materials which are compatible with water used in the system and with the materials used on the indoor unit.
▪
Select piping diameter in relation to required water flow and available external static pressure of the pump.
▪
Use chemical cleaning agents(Begin with acid , finish with alkali).
▪
Do not operate the system with closed valves because it results in damaging the heat pump.
4.3.2
Heat pump foundation
▪
The heat pump must be positioned outdoors on a stable base that can take the total weight of the heat pump.
▪
Secure all four mounting points on a stable base, for example a cast foundation.
N
Check with a spirit level that the heat pump is installed horizontally.
Caution
The unit with water heater must be placed indoors, in an area with a
floor drain.
4.3.3
Outdoor unit support
Outdoor unit installed on the wall by rack
▪
Ensure the wall will be able to suspend the weight of rack and outdoor unit.
▪
Install the rack close to the column as much as possible.
▪
Install proper grommet in order to reduce noise and residual vibration transferred by outdoor unit towards wall.
Installation Guide
DHP-iQ
Danfoss Heating Solutions
VIJSS102
23
