Page 52
SYMBOLS used on the display
PRS Pressure
Ra CO/CO
2
XAIR Excess Air
Tf Flue temperature
Ta Inlet temperature
∆T Nett temperature / Differential temperature
EfG Gross efficiency
EfCG Gross condensing Efficiency
EfN Nett efficiency
EfCN Nett condensing efficiency
- PO - Pump off
‘O2++% Calculated oxygen greater than 18% so calculation is disabled
N/F Temperature input not fitted
CAL Number of days left before recalibration is due
BAT Battery level symbol
N/F Not fitted.
INT Interval in seconds
ppm parts per million
p parts per million
ppm(n) parts per million normalized
O2ref reference level in % for normalization calculation