Rendamax R3456 EVO, Manual, Page: 59 / 72

Installation examples
4-5-A-C-E: 2 heating zones and sanitary hot water + cascade via low loss header
4-5-A-C-E: 2 heating zones and sanitary hot water + cascade via low loss header
Description

2x R3456 EVO with low loss head-
er

Cascade c weather com-
pensation

2 mixed heating zones

Sanitary hot water
Tips

Low loss duo headers are available
for ∆T=15-20K (see chapter
„Accessories“).

The primary circuit should be de-
signed for ∆T=20K, this guarantees
a high boiler efficiency.

When the secundary circuit is de-
signed for a ∆T smaller than 20K,
the flow temperature in the header
will be lower than the flow tempera-
ture of the boiler. This should be
taken into consideration during the
design stage.

The header should be positioned
close to the boiler, to avoid a nega-
tive influence on the temperature
control quality.

In case of a boiler room installed on
the roof, the boiler may never be hy-
draulically connected at the highest
point of the installation.
elco
P
T
M
M
T T
M
T T T T
HC1 HC2
P
elco
P
58
Non-return valve
Flow/ return temperature
sensor
Inlet valve
Common flow temperature
sensor
Outdoor sensor
Mixing valve with actuator
Expansion vessel
Supply air fan (option)
HC1
T
T
T
Heating ciruit
Circulators (for boiler and
system)
Low loss header with air
separator
Plate heat exchanger
Dirt separator with
magnetite filter
Security group with air
separator
Possible extension
Legends
Gas
Flow
Return
Sensor cable
Bus connection cable
M
P P
M
P
Heating circuits distributor