Technical data

MOUNTING AND INSTALLATION
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5.5.1 PREPARING THE CONDENSATE DRAIN FOR THE EXTERNAL
UNIT
In addition to the condensate lines for the heat source, make provisions
for the condensate generated in the external unit.
Unlike boiler condensate, the condensate produced by the external unit
is not acidic and can soak away in chippings or be routed to a drain. The
diameter, slope and routing of the condensate pipe work must be
selected in such a way as to prevent blockage or freezing.
Preparing the condensate drain:
▶ Use a PVC rigid vinyl pipe (VP-32) or a vinyl hose with a minimum
internal diameter of 32 mm as condensate drain.
▶ Select the shortest possible pipe length.
▶ Keep condensate lines as vertical as possible with a minimum slope of
45 mm per metre to its outlet.
5.5.2 MOUNTING ON FOUNDATIONS
▶ Ensure that the foundations and installation surface meets
requirements ( chapter 5.2.7).
▶ Position and level the external unit.
▶ Mark out the holes to be drilled for the 4 anchor bolts.
▶ Move the external unit slightly to the side.
▶ Drill the holes for the 4 anchor bolts.
–Bolt size: M10
– Select a hole depth that allows the anchor bolts to be screwed into
the foundations to a depth of at least 70 mm.
▶ Level the external unit.
▶ Secure the feet of the external unit with four M 10 anchor bolts.
Fig. 28 Foundations for the external unit (2 plinth example shown)
[a] As long as possible, minimum 365 mm
[b] Minimum depth120 mm
[1] M 10 anchor bolt ( 70 mm)
5.5.3 MAKING A CONDENSATE DRAIN FOR THE EXTERNAL UNIT
The condensate generated in the external unit must be drained off free
from the risk of frost.
▶ Ensure that the on-site requirements for reliable condensate drainage
are met ( chapter 5.5.1).
The bottom of the external unit has 3 holes suitable for draining off
condensate.
Fig. 29 Fitting the condensate drain
[1] Condensate pipe
[2] Drain tap
[3] Blanking caps (accessory)
▶ Glue the drain tap [2] into a suitable hole.
▶ Glue blanking caps [3] onto the other holes that are not used. Apply
adhesive properly as it also acts as a sealant.
▶ Connect the condensate hose [1] to the drain tap.
▶ Apply weather-resistant insulation to the drain pipe.
▶ Route the condensate drain into a suitable drain pipe or a dry well.
▶ Protect against the risk of frost:
We recommend the use of the “electric trace heating for the
condensate drain of the external unit” (available as an accessory).
Accessory pack for outdoor unit contains:
• Blanking caps
• Pre-cut insulation (for lagging the service/installer connections)
• Cable ties (for securing lagging of service/installer connections)
NOTICE: Damage from moisture!
Spilled condensate can be a nuisance as well as a hazard
if it leaks onto a walkway and freezes.
▶ Never permit condensate to drain across walkways;
instead, route them to a suitable drainage point.
We recommend providing the pipe work with weather-
resistant insulation.
WARNING: Personal injury from unsuitable surfaces!
An external unit that has not been properly sited may fall
over and cause personal injury and property damage.
▶ Site the external unit on a stable, level substrate with
sufficient load-bearing capacity.
▶ Never site the external unit on wooden floors.
4x
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a
b
1
NOTICE: Frost damage!
Frost damage on the external unit will result if the
condensate fails to drain off.
▶ Either install a condensate drain or an optional
condensate pan fitted with a drain for the external
unit.
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