Weil-McLain Series 2 Manual page 73

® S
ERIES
HEATING SETTINGS menu
Figure 83 System Settings Recommended:
System type
Fan-coil
Finned tube baseboard
Cast iron baseboard
Cast iron radiators
Radiant – slab on grade
Radiant – thin slab
Radiant – below floor (staple up)
Radiant – above floor (sleeper system)
HEATING TIMES
MIN ON TIME
1. This is the minimum time the boiler will satisfy the call for
space heating before switching back to DHW (if there is still
a DHW call).
BOOST INTERVAL
1. This applies when in outdoor reset mode (outdoor sensor
installed — see page 127).
2. The boost timer starts on a call for heat. If the boost interval
time passes and the call for heat is still on, the ECO control
"boosts" the calculated target outlet water temperature by
10°F.
3. This occurs again if another boost interval elapses.
4. Boost will continue until the set point (target temperature)
reaches the SUPPLY MAX setting.
5. The purpose of boost is to compensate for changes in demand
not addressed by the reset curve. Typically, set boost to 30
minutes. The factory default is "OFF" — that is, boost is not
enabled with default settings.
PRE PUMP TIME
1. The boiler circulator and zone circulators (if activated by the
ECO zone circulator outputs) will start this amount of time
before the burner is started.
POST PUMP TIME
1. The boiler circulator and zone circulators (if activated with
the ECO zone circulator outputs) will continue this amount
of time after the burner is shut down when the call for heat
is satisfied.
Part number 550-142-190/1218
2
-
G
AS FIRED WATER BOILER
SUPPLY MAX
* (Default settings)
— Boiler Manual
(continued)
Recommended temperatures
OD RESET MIN
Temp Temp
190 0
180 0
180 0
180 0
120 0
140 0
160 0
140 0
MIN / MAX BLOWER RPM
1. Use to set minimum and maximum boiler inputs by setting
minimum and maximum blower RPM.
2. This adjustment can be used to match the maximum boiler
output to the maximum heat load. This will reduce boiler
cycling and increase boiler/system efficiency.
During combustion testing
must be set to the Maximum Rate "High Value" listed
in Figure 84, page 74 to allow the boiler to be set to
maximum input during high-fire set-up and testing.
SUPPLY MIN OD RESET MAX
Temp Temp
140 70
130 70
120 70
120 70
80 70
80 70
90 70
90 70
, the Maximum rate
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