SQ-Elite-MV & SQ-Elite-EXT Installation Manual
19
dHw puMp output
No, Yes
Default: Yes
Hold Button:
MENU/<System Startup>/..../DHW Pump Output
• The SQ-Elite-MV can operate the DHW Pump. This option allows the user to select if the
SQ-Elite-MV should be controlling the DHW Pump or not.
--DHW PUMP OUTPUT--
No
Yes
BACK SAVE
eXternal Input 1 Mode
Shutdown, SEQ Tstat, SEQ Setback
Default: Shutdown
Hold Button:
MENU/<System Startup>/..../External Input1
• The Shutdown function allows the SQ-Elite-MV to receive a remote dry-contact signal to
terminals
35 and 36
to turn off all relays including boilers stages.
• When Shutdown is selected, any DHW call will be ignored when the control is in Shutdown.
- EXTERNAL INPUT 1
Shutdown
SEQ Tstat
SEQ Setback
BACK SAVE
• The SEQ Tstat option gives terminals
35 and 36
the capability of functioning as a heat-call. That is, when the terminals are
shorted, the control will sequence the stages to maintain the set point. However, when terminals are opened, all stages will turn off.
Unlike the Shutdown, when SEQ Tstat is selected, a DHW call will energize the stages even if the SEQ Tstat is not active.
• SEQ Setback is used to lower the SEQ Set Point when less load is required during nights and weekends. No Schedule options will
be available for the SEQ when this option is selected. In this case, the Setback can only be activated using a remote input.
• For SEQ Setback operation, the SQ-Elite-MV can either utilize its built-in day schedule by selecting Shutdown or Tstat options, or
an external dry-contact signal to input terminals
35 and 36
to switch to setback by selecting Setback from this menu.
eXternal Input 2 Mode
SEQ Prove, MOV Tstat
Default: SEQ Prove
Hold Button:
MENU/<System Startup>/..../External Input2
• The SEQ Prove option assigns terminals
37 and 38
the Prove function for the SEQ stages.
Thus, not allowing any stage to operate when those terminals are opened. However, the SEQ
System Pump can be energized.
• If SEQ Prove is selected, make sure to connect those terminals to either a flow switch that
checks the SEQ System pump operation or a combustion air damper end switch. Otherwise,
install a jumper on terminals
37 ad 38
to allow for stage operation.
- EXTERNAL INPUT2 -
SEQ Prove
MOV Tstat
BACK SAVE
• If MOV Tstat was the option selected, the SQ-Elite-MV will activate the motorized valve heating only when terminals
37 and 38
are shorted with a dry-contact input. When the terminals are opened, the motorized valve Close relay will energize for six minutes
allowing it to fully close.
Burner type
On/Off, 2-Stage, 3-Stage, 4-Stage
Default: On/Off
Hold Button:
MENU/<System Startup>/..../Burner Type
• The SQ-Elite-MV can sequence from a single stage and up to four stages per boiler.
--- BURNER TYPE ----
On/Off
2-Stage
3-Stage
4-Stage
BACK SAVE
BoIler output
None, Pump, Valve
Default: None
Hold Button:
MENU/<System Startup>/..../Boiler Output
• When None is selected, the SQ-Elite-MV will sequence multiple boilers without any
additional boiler pumps or valves.
• The Pump option allows the SQ-Elite-MV to control the boiler stages in addition to their
pumps. The stage pump relay will run for the Run-On delay after the lower stage of that
boiler has de-energized.
-- BOILER OUTPUT --
None
Pump
Valve
BACK SAVE
• The Valve option functions similar to the pump option except that when all SQ-Elite-MV stages are off and after Run-On delay has
elapsed, the Lead boiler's valve relay will remain energized to allow for flow across the system. The lead boiler's valve will remain
energized until the Outdoor temperature rises above the SEQ Outdoor Cutoff or the Shutdown or Summer is activated.
total BoIlers
1 to 22
Default: varies based on Burner Type and Boiler Output
Hold Button:
MENU/<System Startup>/..../Boiler Output
• This option in Combination with Burner Type and Boiler Output option will determine the
total number of stages the SQ-Elite-MV will need to control.
• If more stages are selected than the SQ-Elite-MV and SQ-Elite-EXT Extension has, the
additional boilers containing these stages will have
CE
displayed as their status.
-- TOTAL BOILERS --
6
[
]
BACK SAVE
