S-Plan Type - Bivalent - Grant Aerona HPAW65 Installation & User's Instructions

4 Hydraulic Diagrams
IMPORTANT
The following system diagrams are
only concept drawings and not
detailed engineering drawings.
They are not intended to describe
complete systems, nor any
particular system.
It is the responsibility of the system
designer, not Grant Engineering UK
Ltd., to determine the necessary
components for and configuration of
the particular system being
designed including any additional
equipment and safety devices to
ensure compliance with building
and safety code requirements.
The following are examples of suitable systems

4.3 S-Plan Type - Bivalent

Pump delay on
BTC must be set
for 2 mins. Refer
to Section 11.4
Grant Aerona
Heat Pump
Figure 4-3: Bivalent system - with boiler manifold and S-Plan type controls
!
NOTE
Boiler circulating pump maybe fitted
in Return (between manifold and
boiler). Check with boiler
manufacturer for guidance on pump
location.
10
Recommended
maximum flow
Heat Pump
temp. 60˚C
ATC
Maximum
return temp.
Outside
48˚C
wall
Flow
Isolating
valve
Primary
Flexible
Pump
pipe
Isolating
valve
Return
Internal wiring
centre
Cylinder
Stat
HW Flow
CH Flow
Boiler
R F
Boiler Circulating
Pump (see note below)
Non
Return
Auto Bypass
Valve
Programmer
Room
Stat
Heating Load