Hydraulic Connections; Mixing Valve; Expansion Vessel - Pressure Safety Relief; Frost Protection - Dimplex ASCARI MA 12 Installation And Servicing Instructions

2.2.2 - Main unit
• Once the location of the boiler has been selected,
mark the hole positions as per firgures below. Use
a spirit-level to ensure the holes are aligned
correctly. Access to the bottom screw hole is
achieved by removing the bottom element plate.
• Once marked out, drill 8mm diameter holes and
plug with masonry plugs. Screw in high strengh
screws to a depth that allows the inner face of the
screw head to protrude from the wall a distance to
allow the mounting plates at the rear of the boiler
to engage (approx. 5mm).
• With suitable equipment or an assistant raise the
boiler to the fixing point and ensure each screw
has engaged into the mounting slots. Tighten the
screws to secure the boiler to the wall.
• Once fixed to the wall the boiler may be plumbed
into the central heating system.
2.3 - Hydraulic connection
Connections to heating circuit are located atop the boiler. Left connection for outflow, right connection for
backflow (see § 1.2).

2.4 - Mixing valve

Ascari
installed boiler easily support a backflow temperature higher than the ambient temperature of
surrounding area, which makes unnecessary the use of a mixing valve.
2.5 - Expansion - Pressure safety relief
Expansion is collected by a pressurized 8 liters vessel.
Safety relief bleeder must be connected to a bleed collector with drain (see § 1.2).
2.6 - Antifreeze
Use ethylene glycol only with incorporated corrosion inhibitor.
Glycol ratio must be under 10 %.

2.7 - Bleeding

Make sure to have a bleeding point at the highest level of the hydraulic circuit.
U U U U U
SE SE MAND MAND MANDA A A A A T T T T T ORIL ORIL ORIL ORILY Y Y Y Y BRASS
SE SE MAND SE MAND ORIL
HEA HEATING HEA TING TING OUTFL TING OUTFLO O O O O W W W W W AND OUTFL OUTFL AND AND B B B B B A A A A A CKFL AND
HEA HEA TING OUTFL AND
Ascari - 12kW -page 9 -
Overall frame
Ø8 screw plug
BRASS BRASS CONNECT CONNECT ORS ORS
BRASS BRASS CONNECT CONNECT CONNECTORS ORS SUPPLIED ORS
CKFLO O O O O W W W W W WITHOUT CKFL CKFL WITHOUT WITHOUT REMO WITHOUT
CKFL WITHOUT
300
Ø8 screw plug
pattern
SUPPLIED SUPPLIED ON ON
SUPPLIED ON SUPPLIED ON ON
. . . . .
REMO REMO REMOVING VING VING THEM VING THEM THEM THEM
REMO VING THEM