Weil-McLain -230 - Manual (Page 6)

Part number 550-100-029/0404
GAS
-
FIRED WATER BOILER SERIES
2 — Control Supplement
6
Startup
2
3. The last digit must show “1.” If any other number
displays, press the “+” button until “1” shows in the
right-hand digit. Press the “Store” button to save this
setting.
4. The Ultra PhD control module turns on the DHW
circulator when the indirect water heater operating
control closes. The control module shuts off the boiler
circulator (stops space heating) during calls for DHW
heating.
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.
1. Turn down DHW aquastat on DHW tank (if used).
If necessary, turn off power and remove one of the
DHW aquastat wires to ensure boiler will not receive
a DHW heat call.
2. Turn off power to boiler at service switch.
3. Wait a few seconds, then turn on power to boiler.
[ A180] (self-check on power-up, for a few seconds)
[ 0180] (no call for heat)
4. Raise room thermostat to call for heat.
[
5180] (blower/circulator on) The blower and boiler
circulator energize and the control checks for air flow.
[ 1180] (prepurge) Blower speed will increase to ignition
speed. The blower will run in prepurge for 10 seconds.
[ 2180] (ignition) After prepurge, the control module opens
the gas valve and starts ignition spark.
a. If burner flame proves within 4.5 seconds, burner
continues to fire. Burner will fire at startup rate
— 50% of maximum input — for about 10
seconds to allow flame to stabilize.
b. If burner flame does not prove within 4.5 seconds,
control module attempts ignition sequence again.
Flame must prove within 5 attempts or control
will lockout (display will show [
E 02]).
c. Verify flame failure operation by closing boiler
manual gas cock to prevent gas flow. Open manual
gas valve after testing.
[ 3180] (burner on, space heating) Once flame is proven
and stable, the burner turns down to low fire for
approximately 2 minutes.
• After this low fire period, the burner is allowed to
modulate. Firing rate depends on actual outlet water
temperature versus target temperature.
Startup
(continued from Ultra Boiler Manual)
1. Start the boiler only after completing all instructions
in the Ultra Boiler Manual.
2. To start the boiler, follow the procedure given in
Figure 4, page 7.
3. Once the boiler has started and is operating, continue
the 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 factory default parameter settings.
Set space heating operation
Verify space heating mode
1. Press the “Mode” button until the display shows
“Para.” This is the parameter mode.
2. Press the “Step” button until the display first digit
shows “3.”
3. The last digit must show “1.” If any other number
displays, press the “+” button until “1” shows in the
right-hand digit. Press the “Store” button to save this
setting.
4. See page 18 for further information.
Set space heating target temperature
1. Press the Ultra control panel “Step” button until the
display first digit shows “4.” The right 3 digits show
the outlet water temperature setting.
2. Press the “+” or “-” button to change the setting to
the desired outlet water temperature. (The factory
default setting is 190 °F.)
a. Outdoor sensor installed — Setting is the target
temperature for outdoor temperature at or below
(factory setting) 32 °F. At higher outside temperatures,
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) circulator during
summer operation.
b. Outdoor sensor not installed — Setting is the target
temperature at all times.
3. Press the “Store” button to save the setting.
Check DHW operation setup
1. Go to step 2 if the control is in Parameter mode
already. Press the “Mode” button until the display
shows “Para” (parameter mode).
2. Press the “Step” button until the display first digit
shows “2.”