Weil-McLain ULTRA 230 - Manual (Page 48)

48
Part number 550-100-029/0810
GAS
-
FIRED WATER BOILER SERIES 1 & 2
— Control supplement & Service guide
3. Acceptable range (altitude up to 5,500 feet only):
Ultra-80 to 230: s (13 to 52 on boiler
display).
Ultra-310:
s (14 to 58 on boiler dis-
play).
Boiler display shows fan speed in 100’s of rpm. A value of
s
48 would mean a speed of 100 x 48, or 4800 rpm.
4. Parameter 17 must be increased for HIGH applica-
tions. See Figure 30, page 48 for required values.
5. Factory default — see Figure 30.
Ignition fan speed — parameter 19
1. Parameter 19 sets the fan speed during ignition. Boiler firing
rate is proportional to fan speed, so increasing the minimum
fan speed increases the minimum firing rate (low fire).
The ignition fan speed MUST
the value in Figure 30). This would reduce boiler fir-
ing rate below the acceptable limit during ignition,
resulting in potential for severe personal injury,
death or substantial property damage.
2. Parameter 19 should ONLY HIGH
ALTITUDE applications.
3. Acceptable range (up to 5,500 feet ONLY):
Ultra-80 to 230: s (13 to 52 on boiler
display).
Ultra-310: s (14 to 58 on boiler dis-
play).
Boiler display shows fan speed in 100’s of rpm. A value of s
27 would mean a speed of 100 x 27, or 2700 rpm.
4. Factory default — see Figure 30.
Parameter explanations
(continued)
Firing rates and corresponding blower speeds (low fire, ignition, and high fire) — &IGURE
,OW
5,42! 80 105 155 230 310
RPM RPM RPM RPM RPM
Low fire
0ARAMETER
Minimum fanspeed (up to 5,500 feet)
(Factory default setting)
Minimum fanspeed @ (IGH
(over 5,500 feet)
Ignition
0ARAMETER
Ignition fanspeed (up to 5,500 feet)
(Factory default setting)
Ignition fanspeed @ (IGH
(over 5,500 feet)
High fire
(adjust if desired to match maximum
system load — High fire % rate =
Max heat load / Boiler output)
Maximum fanspeed CH (parameter 13)
(Factory default setting)
Applies to
ALL
Maximum fanspeed DHW (parameter 14)
(Factory default setting)
Applies to
ALL
See Figure 25, page 42 for procedure to access Parameter settings.