Weil-McLain ULTRA 230 - Manual (Page 6)

6
Part number 550-100-029/0810
GAS
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FIRED WATER BOILER SERIES 1 & 2
— Control supplement & Service guide
Startup
Press the “Step” button until the display first digit shows 2.
“2.”
The last digit must show “1.” If any other number displays,
3.
press the “+” or “–” button until “1” shows in the right-hand
digit. Press the “Store” button to save this setting.
The Ultra PhD control module turns on the DHW circulator
4.
when the indirect water heater operating control closes. The
control module shuts off the boiler circulator (stops space
heating) during calls for DHW heating.
Set DHW target temperature
Press the Ultra control panel “Step” button until “1” shows as 1.
the display’s first digit. The right three digits show the DHW
target temperature minus 50 degrees.
The DHW target temperature is the number in “Para” 1 plus
2.
50 degrees. For example, for a target temperature of 190, the
display must show 140 (190 = 50 + 140).
To change the target temperature, press the “+” or “-” button
3.
to increase or decrease the setting.
To save the setting, press the “Store” button. The display will
4.
flash to indicate the setting is saved.
Verify operation — space heating
NOTE: “[ _ _ _ _ ]” in the following indicates the characters that
should show on the Ultra display panel. “180” in the right 3 places
means the display shows the measured boiler water temperature.
The number shown will not necessarily be 180.
Turn down DHW aquastat on DHW tank (if used). If neces- 1.
sary, turn off power and remove one of the DHW aquastat
wires to ensure boiler will not receive a DHW heat call.
Turn off power to boiler at service switch.
2.
Wait a few seconds, then turn on power to boiler. 3.
[AXXX] (self-check on power-up, for a few seconds)
[0XXX] (no call for heat)
Raise room thermostat to call for heat.
4.
[5XXX] (blower/circulator on) The blower and boiler circu-
lator energize and the control checks for air flow.
[1XXX] (prepurge) Blower speed will increase to ignition
speed. The blower will run in prepurge for 10 seconds.
Startup
(continued from Ultra Boiler Manual)
Start the boiler only after completing all instructions in the 1.
Ultra Boiler Manual.
To start the boiler, follow the procedure given in 2. Fig-
ure 4, page 8.
Once the boiler has started and is operating, continue the 3.
startup procedure by performing all of the following steps
to set and verify operation of the Ultra controls.
Instructions in this supplement are based on fac-
tory default parameter settings. To set parameters
other than those in this section, see information
beginning on page 41.
Set space heating operation
Verify space heating mode
Press the “Mode” button until the display shows “Para.” This 1.
is the parameter mode.
Press the “Step” button until the display first digit shows 2.
“3.”
The last digit must show “1.” If any other number displays, 3.
press the “+” or “–” button until “1” shows in the right-hand
digit. Press the “Store” button to save this setting.
See 4. Figure 12, page 18 for further information.
Set space heating target temperature
Press the Ultra control panel “Step” button until the display 1.
first digit shows “4.” The right 3 digits show the outlet water
temperature setting.
Press the “+” or “-” button to change the setting to the de- 2.
sired outlet water temperature. (The factory default setting
is 190°F.)
Press the “Store” button to save the setting. 3.
Outdoor sensor installed — Setting is the target
temperature for outdoor temperature at or below
(factory setting) 32 °F. At higher outside tempera-
tures, the Ultra PhD control module calculates the
target temperature. (See pages 9 and 10 for detailed
discussion of outdoor reset.)
When a summer/winter switch is used, closing the
switch will disable the boiler (space heating) circula-
tor during summer operation.
Outdoor sensor not installed — Setting is the target
temperature at all times.
Check DHW operation setup
Go to step 2 if the control is in Parameter mode already. Press 1.
the “Mode” button until the display shows “Para” (parameter
mode).