13
12
6. Installation
Connections
Additional items required
Additional Items (optional)
Flushing By-Pass
500 mm
3/4”
10 bar max. 110ºC
16 bar, max. 100ºC
-$(-4ޕ*2
B Primary return
C Cold water mains
D Domestic hot water (DHW)
*)-4ޕ*2җ+ # /$)"Ҙ
F Secondary return (Space heating)
G Over pressure relief pipe*
* 15mm copper pipe
First Fix Rail
6x
2x
465
435
20
20
13
230
248
Positioning
Preparation - First Fix Rail (FFR)
Mounting to the wall
The wall needs to be strong enough to
support the HIU. If the wall is of drywall
construction make sure that there is a board
installed (e.g. plywood, min. 18mm) to
support the structure, which is strong enough
to hold the HIU. Use a 4mm drill bit (at least
40mm depth for the wall plugs).
If the wall is of concrete or brick construction
use a 10mm drill bit (at least 60mm depth for
the wall plugs).
# - ,0$- .сޔ3$)".- 2.Ѷ/#
- ,0$- .уޔ3$)".- 2.ѵ
Flushing the system
Before mounting the HIU and connecting it to
the FFR all pipework that is to be connected
(0./ /#*-*0"#'4' ) )ޕ0.#
*0/ѵ)4 -$.*-ޕ03/#/*0'*'' /$)
the narrow channels of the heat exchangers
2$'' $Ȃ$0'//*- (*1 *) /# 4-
$)./'' ѵ)4- ($)$)" -$.)ޕ03(4
cause serious corrosion problems, as well as
- ./-$/$)"ޕ*2)- 0$)"/# Ȃ$$ )4*!
/# ѵ. /# ޕ0.#$)"4Ҋ+..җ*+/$*)'
accessory) and connect it to the FFR
(A-B)
.
6. Installation
55 80 60 60 120 60
45
490
275
819
640
55
45
60
120
60
60
40
40
55
A
B E F
A
B E F
D
C
D C
