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10
The heat pump operates over a large air temperature
range (from -7°C to 35°C) using energy from outdoor
air. It is essential to correctly design and install the air
ducting system to ensure the product operates properly
and complies with regulations.
The air supply to and from the Edel heat pump water
heater must NOT extract air from the living space of the
dwelling. The air must be supplied to the appliance di-
rectly from the outside or from another source outside
the thermal envelop of the living space.
The ducting used to connect the air intake and exhaust
forming. Condensation may result in damage to the ap-
pliance and/or building fabric.
Dimplex does not take any responsibil-
ity for issues caused by poor ducting
design or installation.
Figure 7 provides an example of how the ducting inlet
and outlet connections should be installed.
Installation
through the ducting for correct operation of the appli-
above 320m
3
/hr.
For the fan to operate in Fan speed 1, the maximum sys-
tem pressure drop across the ducting connections must
not exceed 100Pa and for Fan speed 2 the maximum
pressure drop must not exceed 220Pa
6.7 Ducting Design
6.6 Air Connection
Item Qty ∆P [Pa] Total [Pa]
Air Intake X 5
90°bend X 3
External terminal X 1
Air Exhaust
90°bend
External terminal X 1
/
hr
6.7.1 Worked Example
- The pressure drop information provided is for
160mm semi rigid Ubbink ducting, other ducting
manufacturers components may be used howev-
er the total maximum pressure drop must not ex-
ceed the stated values.
Figure 6: Air intake and Air discharge
A ducting system with the following;
Note:
-The calculated worked example includes all the
necessary ducting components to complete the
installation and has resulted in a total system
pressure drop of 207.7 Pa at 320m
3
/hr mass air
ow rate. This is acceptable as the pressure drop
is below the maximum permissible allowed.
NOTE: The system reliability and eciency will be
compromised should the mass air ow rate
drop below 320m
3
/hr.
the system designer calculated the required total
quantity of ducting connections, lengths, bends and
terminations to establish an accurate value for total
Table 3: Worked example
Fan speed 1 will operate when the
system pressure drop is minimal as a
result of very short duct runs. System
eciency will be slightly increased and
the noise level slightly reduced.
i
Dimplex does not take responsibility
for installation and the operating e-
ciency of the appliance when installed
outside the scope of the guidelines
provided in this document.
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Figure 5: Wiring diagram for Immersion Heater
Dial to adjust
water temperature
Earth (green/yellow)
Live (brown)
Neutral (blue)
before switching on the immersion heater. Failure
to do so will damage the element and void any
guarantee on the product.
!
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