Honeywell SDC Service Manual page 208

Hydraulic Components
Buffer loading pump
function if heat
generator is not
available and buffer
start-up protection is
active
Buffer loading pump
function if heat
generator is not
available and buffer
start-up protection is
not active
Action of heating
generator start-up
protection on heating
circuits (HDCP, MC1,
MC2):
Action of heat
generator start-up
protection on hot-water
circuit (tank loading
pump)
Action of heat
generator start-up
protection on buffer
loading pump
208
Buffer control mode
1 2
– –
– –
No No
No Yes
Yes Yes
3 4
OFF OFF
ON ON
Yes Yes
Yes Yes
No No
SDC / DHC
5 6
– –
– –
No Yes
No Yes
Yes No
EN2H-0221GE51 R0812