HAMWORTHY HEATING LTD
34
PUREWELL
Vari
Heat c
500001169/T
8.2.11 - Display of operating phases
(display level A4)
The operating phases according to the LMU…’s sequence diagram can be displayed (display level A4 press
Info button 3 times).
Assignment of the display code and the LMU...’s phase designation is as follows:
Display
Meaning
Internal operating
phases of the LMU...
00
Standby (no demand for heat)
PH_STANDBY
01
Prevention of startup
PH_STARTVER
02 Fan
runup
PH_THL1_1
PH_THL1_2
03 Prepurging
PH_TV
04 Waiting
time
PH_TBRE
PH_TW1
PH_TW2
05 Preignition
time
PH_TVZ
06
Safety time, constant
PH_TSA1_1
PH_TSA2_1
07 Safety
time,
variable
PH_TSA1_2
PH_TSA2_2
10 Heating
operation
PH_TI
PH_MODULATION
Heating mode
11 DHW
operation
PH_TI
PH_MODULATION
DHW mode
12
Parallel operation of space heating and
DHW heating
PH_TI
PH_MODULATION
Heating and DHW
mode
20
Postpurging with the last control of
operation
PH_THL2_1
PH_TN_1
21
Postpurging with control of prepurging
PH_THL2_2
PH_TN_2
22 Home
run
PH_TNB
PH_TLO
PH_TNN
99
Lockout position (display of the current
error code)
PH_STOER
Note:
-If operating phases are passed very quickly or skipped, the relevant display
code will not appear.
Operating mode
Designation
Effect of selection
Automatic operation
Heating circuit 1 (HC1) according to time switch program 1
Standby
Heating circuit 1 switched off
Frost protection functions active
Continuous ‘Normal’
operation
Heating circuit 1 continuously on according to the adjusted
nominal room temperature setpoint or heating circuit setpoint
Continuous ‘Reduced’
operation
Reduced room temperature set point or heating circuit frost
protection setpoint
Figure 8.2.10 Operating Mode Symbols
Summary of Contents for Purewell VariHeat 70c
Page 2: ......
Page 43: ...HAMWORTHY HEATING LTD 37 PUREWELL VariHeat c 500001169 T Figure 8 3 11 Operating phases ...
Page 44: ...HAMWORTHY HEATING LTD 38 PUREWELL VariHeat c 500001169 T Figure 9 0 Boiler Wiring Schematic ...
Page 65: ...HAMWORTHY HEATING LTD 59 PUREWELL VariHeat c 500001169 T Figure E1 2 Typical Piping Layouts ...
Page 70: ...HAMWORTHY HEATING LTD 64 PUREWELL VariHeat c 500001169 T NOTES ...
Page 71: ......