Abbreviations - Honeywell SDC Service Manual

SDC / DHC
RED Lowering operation
OS Outside sensor
OS2 Outside sensor 2
FGS Flue gas sensor
OT Outside temperature
BUS System data bus
OC1 Burner stage 1 operating hour
counter
OC2 Burner stage 2 operating hour
counter
DC Direct heating circuit
DCP Direct heating circuit pump
ECO Switch-off operation
EHR Electric heating rod
SFB Solid fuel boiler sensor
SFR Solid fuel buffer sensor
FC Fixed-value control
SFP Solid fuel pump
PI Pulse input
BP Boiler circuit pump
CC Constant control
CRS Collector return sensor
CTBS Collector tank/buffer sensor
CFS Collector flow sensor
MM Mixer motor
MC Mixed heating circuit
MHP Mixed heating circuit pump
P1 Switching time program
P2 Switching time program
P3 Switching time program
BS Buffer sensor (top)
EN2H-0221GE51 R0812

4 Abbreviations

The following abbreviations are used in this documentation/in the
display of the control device:
BS 2 Buffer sensor 2 (bottom)
BLP Buffer loading pump
RBP Return bypass pump
RP Return pump
SD I Switching differential I
SD II Switching differential II
TS Tank sensor
TLP Tank loading pump
SLS Solar loading switch-over
SLSS Solar loading switch-over sensor
SFD Solar forced dissipation
SLP Solar loading pump
STL Stratified tank loading pump
VO Variable output (general)
VO1 Variable output 1
VO2 Variable output 2
VI Variable input (general)
VI1 Variable input 1
VI2 Variable input 2
VI3 Variable input 3
FM1 Flow sensor of mixed heating
circuit 1
FM2 Flow sensor of mixed heating
circuit 2
PHE Parallel heat generator enable
HG Heat generator
HGS Heat generator sensor
WD Wall device for room temperature
sensing
HW Hot water
CIR Circulation pump
CHP Charging pump
Abbreviations
21