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13 Water temperature sensors
Two temperature sensors determine the water inlet temperature
(13a) and water outlet temperature (13b).
14 Digital controller cable intake
15 Power supply intake
16 OP10 heater tape (optional, not illustrated)
The heater tape is wrapped around the pipework and protects
the evaporator and water circuit in the unit from freezing at cold
outdoor temperatures.
Safety devices
17 Flow switch
The flow switch checks the flow in the water circuit and protects
the heat exchanger against freezing and the pump against
damage. In case the minimum required flow is not achieved, the
unit will be shut down.
18 Pressure relief valve
The pressure relief valve prevents excessive water pressure in
the water circuit (≥3 bar).
Switch box components
19 Cable tie mountings
The cable tie mountings allow to fix the field wiring with cable
ties to the switch box to ensure strain relief.
20 Terminal block
The terminal block allows easy connection of field wiring.
Installation manual
4
I
Selecting the installation location
General guidelines
20
19
Installing near a wall or obstacle
NSTALLATION OF THE UNIT
Make sure to provide for adequate measures in order
to prevent that the outdoor unit be used as a shelter
by small animals.
Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.
The unit is designed to be installed in an outdoor location.
Choose a place solid enough to bear the weight and vibration of
the unit, where the operation noise will not be amplified.
Although the noise produced by the unit during operation is low,
avoid installation near to places where even low noise levels can
be disturbing (e.g., bedroom windows, terraces).
Choose a location where the hot air discharged from the unit will
not cause a nuisance.
There must be sufficient space for air passage and no
obstructions around the air intake and the air exhaust (see
"Installing near a wall or obstacle" on page
The site must be free from the possibility of flammable gas
leakage in a nearby place.
Install the unit and power cords at least 3 m away from television
and radio sets. This is to prevent interference to images and
sounds.
In coastal areas or other places with salty atmosphere,
corrosion may shorten the life of the unit. Prevent direct
exposure to winds coming from the sea.
Since drain flows out of the unit, do not place anything under the
unit which must be kept away from moisture.
Where a wall or other obstacle is in the path of the unit's air
intake or exhaust airflow, the distances as indicated on the
figures below need to be respected.
The wall height on the exhaust side should be 1200 mm or less.
Side view
>100
>350
4).
Top view
>100
>350
>50
EWAQ+EWYQ005~007ACV3P
Packaged air-cooled water chillers and
packaged reversible air to water heat pumps
4PW33165-1D
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