SQ-Elite-MV & SQ-Elite-EXT Installation Manual
11
wIrIng tHe MoV tstat
(terMInals 37, 38)
• For these terminals to function as a thermostat call for the motorized valve loop signal,
MOV Tstat
must be
selected from External Input 2 start menu. See External Input 2 on page
.
• This feature can be used whenever it is desirable to activate the motorized valve loop from a remote location or
another controller (i.e. Thermostat).
• When the Tstat feature is enabled by closing a dry-contact, the SQ-Elite-MV will modulate the motorized valve to
achieve the desired MOV Set Point.
• The Tstat signal must be a dry-contact only. No voltage can be placed across the
Tstat
terminals.
RS485
36
37
38
SHUTDOWN
/TSTAT
/SETBACK
SEQ Prove
/MOV TSTAT
MOV
T
stat
Dry Contact
wIrIng outputs
wIrIng tHe systeM puMps
• Both system outputs will de-energize when the Season is set to Summer or the
Shutdown
input is activated.
wIrIng tHe seQ systeM output (terMInals 15, 16)
• Connect the SEQ pump (boiler loop pump) or pump starter to terminals 15, 16 so that the SEQ System relay will
switch the hot power line to the pump.
• The SEQ System output has one Normally Open (N.O.) relay that acts as a switch. It does not source any power.
However, the relay can switch a maximum power of 2 Amp pilot duty or 6 Amp resistive load at 120VAC.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring.
• The SEQ System output relays will energize whenever the outdoor temperature drops below its Outdoor Cutoff. It
will de-energize when the outdoor temperature rises 2
˚
F above the respective Outdoor Cutoff and after a full SEQ
Run-on has elapsed.
• If External Input 1 was set to SEQ Tstat, the SEQ System relay will de-energize after the Run-On delay when the
SEQ Tstat
input is opened.
• If Primary Secondary is selected as the DHW Piping, the SEQ System output will also energize on a call for DHW
during Summer or when
SEQ Tstat
input is opened.
DHW
PUMP
13
Stage E
15
Stage F
17
12
14
16
18 19
SEQ
SYS
SEQ
System
Pum p
L
N
wIrIng tHe MoV systeM output (terMInals 19, 20)
• Connect the MOV pump (Motorized valve loop pump) or pump starter to terminals 19, 20 so that the MOV
System relay will switch the hot power line to the pump.
• The MOV System output has one Normally Open (N.O.) relay that acts as a switch. It does not source any power.
However, the relay can switch a maximum power of 2 Amp pilot duty or 6 Amp resistive load at 120VAC.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring.
• The MOV System output relays will energize whenever the outdoor temperature drops below its Outdoor Cutoff.
It will de-energize when the outdoor temperature rises 2
˚
F above the respective Outdoor Cutoff and after the Valve
Close relay is energized for a full six minutes. The MOV System relay will remain energized for the MOV Run-
On before de-energizing.
• If External Input 2 was set to MOV Tstat, the MOV System relay will de-energize after the Run-On delay when
the
MOV Tstat
input is opened.
DHW
PUMP
17
16
18 19
21
20
22 23
MOV
SYS
MOV
CLOSE
SEQ
SYS
MOV
System
Pump
L
N
wIrIng tHe dHw puMp
(terMInals 17, 18)
• The SQ-Elite-MV can control the DHW Pump when the DHW Pump Output option is activated in the Startup
Menu. See
DHW Pump Output on
.
• Connect the DHW pump or pump starter to terminals 17, 18 so that the DHW Pump relay will switch the hot
power line to the pump.
• The DHW Pump output has one Normally Open (N.O.) relay that acts as a switch. It does not source any power.
However, the relay can switch a maximum power of 2 Amp pilot duty or 6 Amp resistive load at 120VAC.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring.
• The SQ-Elite-MV will energize the DHW Pump whenever there is a call for DHW.
• If Shutdown was selected as the External Input 1 (See page 19), DHW calls will be ignored when Shutdown is
active.
DHW
PUMP
15
Stage F
17
14
16
18 19 20
MOV
SYS
SEQ
SYS
DHW
Pump
L
N
