37
g. Locking Errors:
Locking errors indicate a condition which requires
someone to press the
Reset
key on the display to
allow the boiler to resume operation. These errors
are maintained in nonvolatile memory so that a
power cycle will not clear the error. Screen #10
(Figure 8.29) shows the last locking error and the
relative time it occurred.
The error number in the A## format corresponds
to the English Language description at the bottom
of the screen. A complete list of locking errors is
provided in Table 10.2 in the Troubleshooting
section of this manual. Pressing the
Select
key
displays the same error but now shows the time
between this error and the previous error in its
history. See Figure 8.30. In this case, the “0” in
the upper right corner is flashing to indicate that
this was the last error to occur.
Pressing the
Ý
key while the “0” is flashing
advance to the previous error in the control
history and the number “1” will flash in the upper
right as shown in Figure 8.31. The
Ý
key can be
used to look at all 15 of the blocking errors in the
control history.
When error #255 is displayed (Figure 8.32), this
indicates that no errors occurred and the
remainder of the errors displayed will show this
message. Pressing the
Menu/Return
exits the
control history screen.
2.
Installer Menu – Boiler Settings
a. DHW Mode:
Choosing “Boiler Settings” from the Installer Menu
displays the DHW Mode screen depicted in Figure
8.33.
The DHW mode is used to choose between several
different configurations. Press the
Select
key
causes the mode number to flash. Use the
Þ
and
Ý
keys to change the mode to the desired number.
Press the
Select
key again to save the new value.
Table 8.4 shows the available DHW Mode options:
Figure 8.29: Locking Error Status Screen
Figure 8.30: Locking Error – History Screen 0
Figure 8.31: Locking Error – History Screen 1
Figure 8.32: Locking Error – History Screen Error
#255
Figure 8.28: Blocking Error – History Screen Error
#255
Figure 8.33: DHW Mode Screen
B O I L E R
S E T T I N G S
1
D H W
m o d e
M O D E :
1
D H W
S t o r e
w i t h
S e n s o r
▼
BOILER CONTROL: INTERNAL WIRING & OPERATION
Table 8.4: DHW Modes
DHW
Mode
Description
1
Storage Tank with Temperature Sensor - Default
Using the 12 k
Ω
thermistor supplied with the boiler, the control directly monitors the storage tank temperature and fires the
boiler to maintain the desired temperature. Store Warm Hold: By monitoring the tank temperature, the control can determine if
the temperature drop is due to a hot water demand or to standby losses. For standby losses, the boiler will only fire at the
minimum input for maximum system efficiency.
2
Storage Tank with Separate Thermostat
In this mode, the control targets a fixed boiler setpoint temperature responding to a contact closure which indicates a call for heat.
The “Store Warm Hold” function will not be functional
if the DHW tank mode is set to 2. This requires a
DHW tank sensor.
NOTICE
Be sure to use only the tank sensor provided. Other
sensors may not provide accurate tank temperatures
and may cause severe personal injury due to scalding.
WARNING
Summary of Contents for PUREFIRE PFW-199
Page 20: ...18 WATER PIPING AND CONTROLS Figure 4 3 Schematic Piping One Boiler with a Single Storage Tank...
Page 60: ...58 Figure 13 2 Heat Exchanger Burner Assembly Repair Parts REPAIR PARTS...
Page 63: ...61 APPENDIX A STATUS SCREENS APPENDIX A STATUS SCREENS...
Page 64: ...62 APPENDIX A STATUS SCREENS...
Page 65: ...63 APPENDIX A STATUS SCREENS...
Page 66: ...64 APPENDIX B USER MENU APPENDIX B USER MENU...
Page 67: ...65 APPENDIX B USER MENU...
Page 68: ...66 APPENDIX C INSTALLER MENU APPENDIX C INSTALLER MENU...
Page 69: ...67 APPENDIX C INSTALLER MENU...
Page 70: ...68 APPENDIX C INSTALLER MENU...
Page 71: ...69 APPENDIX C INSTALLER MENU...
