heat-timer SQ-Elite-EXt, Инструкция по установке и эксплуатации

Страница: 31 / 44

SQ-Elite-MV & SQ-Elite-EXT Installation Manual 31
dIsplay BoIler status
The display bottom line gives immediate access to each boiler status. The following list shows all possible boiler status:
• <AB> Two-Stage boiler and Boiler AB is the Lead in sequencing. (Brackets indicate Lead Stage).
• --- Boiler stages are de-energized. The boiler Mode is set to Auto.
• STB Boiler stages are de-energized. The boiler Mode is set to Standby.
See Mode on page
3
2.
• HI Boiler highest stage is active. The boiler Mode is set to either Auto or Standby.
• MED Boiler Middle stage is active. Available in Three-stage boilers only. The boiler Mode is set to either Auto or Standby.
• MHI Boiler Middle High stage is active. Available in Four-stage boilers only. The boiler Mode is set to either Auto or Standby.
• MLO Boiler Middle Low stage is active. Available in Four-stage boilers only The boiler Mode is set to either Auto or Standby.
• LO Boiler Lowest stage is active. The boiler Mode is set to either Auto or Standby.
• ON All Boiler Stages are set to ON using the Mode. See Mode on page 3
2.
• OFF All Boiler Stages are set to OFF
using the Mode. This must be the setting for nonexisting boilers. See Mode on page
3
2.
• C/E Boiler on Extension panel is not communicating back to the SQ-Elite-MV.
• Boiler Pumps are being controlled by the SQ-Elite. See Boiler Output on page 19
.
• Boiler Valves are being controlled by the SQ-Elite.
See Boiler Output on page
19
.
dIsplay Messages
The SQ-Elite-MV normal display layout reserved the second and third lines for message indications. The following is a list of the
most common Message Display Line information:
SEQ Messages
• Summer The control is set to Summer. No heat is active.
See Season on page 22.
• SEQ Outdoor Cutoff The Outdoor temperature is above the SEQ Outdoor Cutoff.
See Outdoor Cutoff on page 2
3
.
• Shutdown Active The Shutdown Terminals are Shorted. No heating boilers will be active the motorized valve will be
closed. See Shutdown on page
10
.
• SEQ Shutdown by EMS The EMS is below 2mA or above 22mA. All boilers will be inactive. See Setting 4-20mA on page 1
8.
• DHW Call (200˚F) There is a DHW (Domestic Hot Water) call. The SQ-Elite-MV will Raise the SEQ Set Point to the
indicated temperature. DHW increases calculated temperature to the lower of 200˚F or Max Water.
• Holding Return at 110˚F The Return sensor is reading less than the Minimum Return. SQ-Elite-MV is trying to raise return to
110˚F. See Boiler Minimum Return on page
25.
• Holding Until 150˚F The Lead boiler is in Last Stage Hold. This example shows that the lead stage will turn off when
system temperature reaches 150˚F. See Last Stage Hold on page
2
6
.
• SEQ Prove Failure After boilers have run for a while, Prove signal was opened. The boiler relays will de-energize.
However, the System relay will remain energized. See External Input 2 on page 19
.
• Waiting for SEQ Prove Boilers have not been running, the Prove signal is opened. However, the System relay will remain
energized. See External Input 2 on page
19
.
• SEQ Tstat Open No call for SEQ heat is activated on terminals
35 and 36
. See External Input 1 on page 19
.
• All Stages On/Off SEQ Sensor is reading fault. See SEQ Sensor Fault on page
2
0
.
• OD Failure (240˚F) Outdoor sensor is reading fault. SEQ Sensor Fault is set to Stages On. The control will maintain
Maximum Water Temperature. See SEQ Sensor Fault on page
2
0
.
• Boost to 170˚F The SEQ Target has been increased to 170˚F to meet the Boost demand after the Setback period. See
SEQ Boost on page 28.
• Setback to 150˚F The SEQ Target has been decreased by the Setback to 150˚F. See Setback Schedule on page
28.
MOV Messages
• Valve Close The control is set to Summer or Shutdown. No heat is active. See Season on page
22.
• Manual Valve Close/Open The valve is set manually to Close or Open. See Valve on page 30
.
• MOV Tstat Open No call for MOV heat is activated on terminals
37 and 38 . See External Input 2 on page
19
.
• MOV Outdoor Cutoff The Outdoor temperature is above the MOV Outdoor Cutoff. See Outdoor Cutoff on page
2
3
.
• Fail Valve Close/Open MOV Sensor is reading fault. See MOV Sensor Fault on page
2
1
.
• MOV OD Failure (240˚F) Outdoor sensor is reading fault. MOV Sensor Fault is set to Valve Open. The control will maintain
Maximum Water Temperature. See MOV Sensor Fault on page
2
1
.
• MOV Boost to 170˚F The MOV Target has been increased to 170˚F to meet the Boost demand after the Setback period. See
MOV Boost on page 28.
• MOV Setback to 150˚F The MOV Target has been decreased by the Setback to 150˚F. See Setback Schedule on page
28.