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- 8 -
Configuration tolerated under certain conditions
Installation in an unheated space with one duct (outlet or inlet, volume > 20m
3
)
FAN set to 1 (see Getting start section, page 14).
Possible consequences
:
- The negative pressure in the
room due to the expulsion of
the exterior air may result in air
entering through the doors and
windows. Provide an air inlet
(same diameter as the ducts)
from the exterior in order to
avoid sucking air from the
heated space.
- Caution: in winter, the air will
be colder than the air expelled
by the water heater, resulting
in a drop in temperature in the
garage.
* In warmer climates ducts may be reversed to provide cold air into an adjacent room for cooling. Connect
(air in) from outside and (air out) into the adjacent room. NOTE: It is not recommended to reverse ducts
(air out) into the room that the HPWH is installed. This will reduce the COP and increase the cooling of the
room.
Unsuitable configurations
Prohibited Ducting installation
configurations
Related risks
The water heater draws in air
from a room containing a
charged source of heat used to
heat the room.
Uses heat energy from a higher cost source.
Connection to mechanical
ventilation
The greasy vapour and dust that may flow through the ducts of the
mechanical ventilation system can reduce the life time of your water
heater.
Connection to the roof space
If the insulation between the ceiling and the roof space is insufficient,
this installation may result in heat loss from the house. In extreme
cases, condensation may appear on the ceiling of the rooms beneath
the cooled parts of the roof space.
Risk of falling objects and aspiration of dust by the raised water heater
in this configuration, that can reduce the life time of your water heater.
Other prohibitions:
-
There must be no Heat Pump Air Access connection between the device and a tumble dryer.
- Avoid dusty rooms
- Do not draw in air containing solvents or explosives
- Do not connect the appliance to hoods evacuating fatty or polluted air
- Do not install the water heater in a room that freezes
- Do not place anything on the top of the water heater
- Do not install in an attic
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