SVF
™
Series 1
Commercial Condensing Gas-Fired Water Boiler
— Boiler Manual
Part number 550-100-250/0819
78
ASSIGN INPUTS menu, BASIC mode
(continued)
Figure 70
AUX PUMP/OUTPUT operation (accessed in ASSIGN INPUTS menu – see Figure 69, page 77)
Option
!CTIVATIONCONDITIONS
3UGGESTEDUSES
!,7!93/.
s
Output is always energized whenever the control is powered.
s
Hot loop for seasonal boilers that are manually
shut down at end of season and started up at
start of heating season.
%84%2.!,
37)4#(
s
The output is energized on closure of an external switch wired to this
input and is de-energized when the external switch opens.
s
Hot loop for boilers whose CH is manually
shut down at end of season and started up at
start of heating season, but remain available for
local calls (DHW, etc.).
/54$//2
"%,/7773$
s
This output is energized only when outdoor temperature is below the
WWSD setting (see BOILER SETTINGS menu, Figure 67, page 75).
s
This setting is non-selectable if WWSD is set to OFF or ODT is not
connected at initial boiler power. If Outdoor Below WWSD is already
chosen and WWSD is later set to OFF, Outdoor Below WWSD will
behave as Always On.
s
Hot loop for boilers whose CH is automati-
cally shut down based on outdoor temperature
(inferred heat loss), but remain on for local
calls (DHW, etc.).
!.944).054
s
The assigned output is energized if there is an input closure on this boiler.
s
The assigned output will de-energize once there are; no input on this
boiler, post-purge has finished, and post-pump time has expired.
s
If the closed input is configured for a heat demand, its output will de-
energize after post-purge and post-pump.
s
Energize a system pump relay if pump must
run during all heating calls.
!.944).054
"9)4302)/2)49
3%44).'3
s
The assigned output is energized:
s
If there is an input closure on this boiler.
. . .
and
. . .
s
RUN AUX PUMP/OUTPUT is set to YES for the priority as-
signed to the closed input.
s
The assigned output will de-energize once there are; no input closures
on any of the network boilers, post-purge has finished, and post-pump
time has expired.
s
Energize a system pump relay if pump must
run only on some heat calls (such as systems
with locally-connected DHW heating).
!.9
"52.%2
$%-!.$
s
The assigned output is energized when the boiler receives a call for
heat and starts to pre-purge.
s
The assigned output is de-energized once the burner is off and post-
purge is complete.
s
Use for interlocking with combustion air
damper, flow switch, etc.
$!-0%2
CONTROL
s
The assigned output is energized when the boiler receives a call for
heat and starts to pre-purge.
s
The assigned output is de-energized once the burner is off and post-
purge is complete.
s
Use for interlocking with combustion air lou-
vers (ie louver wall), flow switch, etc.
s
Individual combustion air damper kit.
Option
Standby
TT
Closed
Pre-Pump
Pre-
Purge
Burner
Running
Post-
Purge
Post-
Pump
Standby
Comments
!.944).054
OR
!.944).054"9)43
02)/2)493%44).'3
off
ON
off
s
See Figure 70 for explanation of
differences between the ANY TT
INPUT options.
!.9"52.%2$%-!.$
off
off
off
ON
off
off
Figure 71
AUX PUMP/OUTPUT operation — start, run and stop, based on boiler status