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

4.4 Extended S-Plan Type - Bivalent

Pump delay on
BTC must be set
for 2 mins. Refer
to Section 11.4
Grant Aerona
Heat Pump
Primary
Pump
Figure 4-4: Bivalent system - with boiler and extended 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.
Cylinder
Stat
Recommended
maximum flow
Heat Pump
temp. 60˚C
ATC
Maximum
return temp. Outside
R
wall
48˚C
Flow
Isolating
valve
Flexible
pipe
Isolating
valve
Return
Internal wiring
centre
HW Flow
CH Flow Heating Load
Boiler
CH Flow
Heating Load
F
Boiler Circulating
Pump (see note below)
Non
Return
Auto Bypass
Valve
Programmer
Room
Stat
Room
Stat
11