andrews SH60, User Manual

Page: 34 / 48

Installation examples
4-A-C: 2 heating zones + low loss header
34
4-A-C: 2 heating zones + low loss header
Description
•
R600 with low loss header
•
Weather compensated control (E8 or
LOGON B)
•
2 mixed heating zones
Tips
•
Complete accessory kits with low loss
header are available for
∆ T=10-20K
(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 temperature of the
boiler. This should be taken in consid-
eration during the design stage.
•
The header should be positioned
close to the boiler, to avoid a negative
influance 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.