PEERLESS PUREFIRE PFW-199, Installation, Operation & Maintenance Manual, Page: 36 / 81

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B. USER MENU
To access the User Menu, simply press the Menu key on
the display interface. Figure 8.2 shows the menu that will
appear:
Use the
Þ
and
Ý
keys to move the arrow pointer to the
desired menu option. Then press Select to choose it.
1. USER MENU – STATUS
a. Current Setpoint:
If the water tank is equipped with the tank
temperature sensor supplied with the unit,
choosing “Status” will display the tank
temperature. If an independent thermostat is used,
the boiler supply temperature will be displayed.
These screens are shown in Figure 8.3 and 8.4:
b. Sensor Temperatures:
Pressing the
Þ
key advances to the next status
screen which shows the Supply, Return and Tank
temperature sensor readings (Figure 8.5). If there
is no tank sensor, the reading for DHW will show
“CALL” or “NO CALL”. Pressing the
Þ
key again
shows the System and Exhaust Vent temperature
readings (Figure 8.6).
c. Circulator Status:
Pressing the
Þ
key once more shows the status of
the General Circulator Output (Terminals 21 &
22) and the DHW Circulator Output (Terminals 17
& 18). The display will indicate if the circulators
are
On or Off . See Figure 8.7.
2. USER MENU – SETTINGS
a. DHW Tank Setpoint & Offset:
If the water tank is equipped with the tank
temperature sensor supplied with the unit,
choosing “Settings” from the user menu will
display the screens shown in Figure 8.8 & 8.9.
The “Offset” value is added to the “Tank
Setpoint” to provide a target setpoint for the boiler
supply (outlet) temperature, “Boiler SP”, when the
unit is firing. To change the value, press the
Select key and the value will begin flashing. Use
the
Þ
and
Ý
keys to decrease or increase the
value and then press Select again to save the
value. Table 8.2 shows the minimum, default and
maximum value for each of these parameters.
b. DHW Boiler Setpoint:
If the water tank is using an independent
thermostat to control the tank temperature, the
screen shown in Figure 8.10 is displayed:
These values can be changed by using the
Select ,
Þ
and
Ý
keys as described above. Table
8.3 shows the value range for this parameters.
Figure 8.2: User Menu
Figure 8.3: Setpoint Status Display – Tank
Figure 8.4: Setpoint Status Display – Supply
Figure 8.5: Sensor Temperature Display #1
Figure 8.6: Sensor Temperature Display #2
Figure 8.7: Circulator Status
Figure 8.8: DHW Supply Offset & Boiler Setpoint
Figure 8.9: DHW Tank Setpoint
Parameter Minimum Default Maximum
Tank Setpoint 50°F (10°C) 120°F (49°C) 195°F (90°C)
Offset 0°F (0°C) 18°F (10°C) 36°F (20°C)
Table 8.2: Tank Setpoint & Offset Ranges
Note that the Boiler SP will not exceed 195°F (90°C) if the sum
of the Tank Setpoint and offset are above that value and the
boiler will not target the higher value.
Figure 8.10: DHW Supply Setpoint
Parameter Minimum Default Maximum
Boiler Setpoint 50°F (10°C) 180°F (82°C) 195°F (90°C)
Table 8.3: Boiler Supply Setpoint Range
BOILER CONTROL: INTERNAL WIRING & OPERATION