Page 10
Sizing example 1
Design
temperature
The property is in Manchester,
England
–
NHBC recommend -
3
C and CIBSE recommend -
2.2
C. The design temperature is
therefore -3
C.
Building
heat loss
The properties heat loss is
calculated to be 4.5kW at the
design temperature.
Flow
temperature
Has been selected at 55
C as
radiators are going to be
installed.
The heat pump is dimensioned on the heat consumption
of the building at the design temperature as shown in
green in
Figure
1
.
Step 1: The building's heat loss is plotted based upon the
0kW @ 21
C
and the building‟s calculated heat loss at the
design temperature i.e. 4.5kW @ -3
C as shown by the
green line.
Step 2: At the point where the green line crosses the
performance line of the heat pump the blue line can be
drawn to show the external temperature that the heat
pump will be able to match the heat load of the property
which in
Figure 1
is -9
C.
Step 3: Below external temperatures of -9
C the property
will require additional heat. The factory fitted 3kW inline
flow boiler in addition to the 6kW heat pump to gives 9kW
which will support the properties heat load down to the
operating limit of the heat pump which is -20
C.
Figure 1: Example heat output curves to EN14511
for the LA 6 MI for a heat loss of 4.5kW at a design
temperature of -3
C.
Sizing example 2
Design
temperature
The property is in Birmingham,
England
–
NHBC recommend
3
C and MIS 3005 recommend -
3.4
C. The design temperature is
therefore -3.4
C.
Building
heat loss
The properties heat loss is
calculated to be 5kW at the
design temperature.
Flow
temperature
Has been selected at 35
C as
under floor heating is going to be
used.
The heat pump is dimensioned on the heat consumption
of the building at the design temperature as shown in
green in
Figure 2
.
Step 1: The building's heat loss is plotted based upon the
0kW @ 21
C and the building‟s calcu
lated heat loss at the
design temperature i.e. 5kW @ -3.4
C as shown by the
green line.
Step 2: At the point where the green line crosses the
performance line of the heat pump the blue line can be
drawn to show the external temperature that the heat
pump will be able to match the heat load of the property
which is also 5.9kW at
–
8
C.
Step 3: Below external temperatures of -8
C the property
will require additional heat. The factory fitted 3kW inline
flow boiler in addition to the 6kW heat pump to gives 9kW
which will support the properties heat load down to the
operating limit of the heat pump which is -20
C.
Figure 2: Example heat output curves for the LA 6 M for a
heat loss of 5.0kW at a design temperature of -1.8C and a the
building heat loading being met down to -15C.
Содержание LA 12 MI
Страница 35: ...Page 34 Package 1 and 2 Plumbing Schematic...
Страница 36: ......
Страница 40: ...Page 39 CE declaration of conformity...
Страница 41: ...Page 40 LA 6 MI performance...
Страница 42: ...Page 41 LA 6 MI continued...
Страница 43: ...Page 42 LA 9 MI performance...
Страница 44: ...Page 43 LA 9 MI performance continued...
Страница 45: ...Page 44 LA 12 MI performance...
Страница 46: ...Page 45 LA 12 MI performance continued...
Страница 47: ...Page 46 LA 16 MI performance...
Страница 48: ...Page 47 LA 16 MI performance continued...
Страница 49: ...Page 48 Product Dimensions LA 6 MI and LA 9 MI...
Страница 50: ...Page 49 Product Dimensions LA 12 MI and LA 16 MI...
Страница 51: ...Page 50 LA 6 MI and LA 9 MI Spare parts Note the non numbered parts are not kept as standard service parts...
Страница 56: ...Page 55 LA 12 MI and LA 16 MI Spare parts Note the non numbered parts are not kept as standard service parts...
Страница 61: ...Page 60 Information for DHW cylinder with buffer ECS125HP 580...
Страница 62: ...Page 61 Information for DHW cylinder with buffer ECS150HP 75 580...
Страница 63: ...Page 62 Information for DHW cylinder with buffer ECS210HP 75 580...
