15
Key
Location
Minimum distance
A
Below an opening (window, air-brick, etc.)
300 mm
B
Above an opening (window, air-brick, etc.)
300 mm
C
To the side of an opening (window, air-brick, etc.)
300 mm
D
Below gutter, drain-pipe, etc.
25 mm
E
Below eaves
25 mm
F
Below balcony, car-port roof, etc.
25 mm
G
To the side of a soil/drain-pipe, etc.
25 mm (60mm for 80/125 - 5” flue)
H
From internal/external corner
25 mm (60mm for 80/125 - 5” flue)
I
Above ground, roof, or balcony level
300 mm
J
From a surface or boundary facing the terminal
600 mm
K
From a terminal facing a terminal
1200 mm
L
From an opening in the car-port into the building
1200 mm
M
Vertically from a terminal on the same wall
1500 mm
N
Horizontally from a terminal on the same wall
300 mm
P
From a structure to the side of the vertical terminal
300 mm
Q
From the top of the vertical terminal to the roof flashing
As determined by the fixed collar
of the vertical terminal
R
To the side of a boundary
300 mm
S
To the side of an opening or window on a pitched roof
600 mm
T
Below an opening or window on a pitched roof
2000 mm
V
From a vertical terminal to an adjacent opening (window, air-brick, etc.)
(call Vokera technical for advice)
W
From a vertical terminal to an adjacent vertical terminal
300 mm (only if both terminals are the same height)
Fig. 6
2.7 VARIABLE SPEED CIRCULATOR
Fig. 6 shows the flow-rate available – after allowing for pressure loss through the appliance – for system requirements. When
using this graph, apply only the pressure loss of the system.
Flow rate (l/h)
Residual head (mbar)
0
50
100
150
200
250
300
350
400
450
500
550
600
0
100
200
300
400
500
600
700
800
900
1000
1100
Pr
ev
al
en
za
[m
ba
r]
Portata impianto [l/h]
2.8 HOW TO FREE THE PUMP
To “release” the seized rotator shaft:
- set boiler status to OFF by pressing button 1
- remove front cover as detailed in paragraph “7.5”
- remove the circulator cap
- with a slotted screwdriver, rotate the shaft being careful not
to strain the seat (Fig. 7).
- To extract the connector holder, lever with a screwdriver as
shown in Fig. 8.
- Refit the cap and press key 1 to select the type of operation
desired.
Carry out the operation with extreme caution so as not to
damage the components themselves.
1
Fig. 7
Fig. 8
fig. 2
Fig. 9
