Related Manuals for heat-timer SQ-ELITE-8T
Summary of Contents for heat-timer SQ-ELITE-8T
- Page 1 INSTALLATION AND OPERATION MANUAL SQ-ELITE-8T & SQ-ELITE-EXT HYDRONIC SEQUENCING CONTROL FOR HYDRONIC SYSTEMS 059063–00 REV. C...
- Page 2 WARNING The SQ-Elite is strictly an operating control. It cannot be used as a limit control. All boilers must have all safety and limit controls required by code. It is the responsibility of the installer to verify that all the safety and limits are working properly before the SQ-Elite is installed.
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Page 3: Table Of Contents
TABLE OF CONTENTS OUTDOOR CUTOFF TEMPERATURE TARGET OFFSET LAYOUT MINIMUM TARGET MAXIMUM TARGET OVERVIEW BOILER MINIMUM RETURN MINIMUM RETURN UNDERSTANDING OPERATION CONCEPT RETURN LAG RESET RATIO/OUTDOOR RESET SYSTEM SETTINGS PID OPERATION STAGE SETTINGS OSS OPERATION REACTION TIME PURGE DELAY INITIAL SETUP MINIMUM RUNTIME SELECTING THE SYSTEM FEATURES STANDBY DELAY... -
Page 4: Layout
Connect to Extension panels to System Output controls pumps, add additional stages or connect valves, or other system components. to 4–20mA EMS Interface for DHW Pump and Comb. Air relays are external set point. controlled when configured. 059063–00 REV. C HEAT-TIMER CORP. -
Page 5: Overview
STANDBY UNIT OPTION Any of the SQ-Elite-8T heating or cooling units can be configured as a Standby with an adjustable Standby delay. Assigning a specific unit to work in standby mode will remove it from the rotation. In this mode, the unit will be used for backup in large demand periods where the primary units will not suffice. - Page 6 Having a DHW input either as a dry contact to be used with an external aquastat or as a temperature sensor that can be ordered separately, the SQ-Elite-8T can control a DHW pump using its built-in DHW Pump output relay. The user will have different priority options that varies based on the DHW piping design.
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Page 7: Understanding Operation Concept
Or, it can be set to Set Point and sequence stages to achieve a manually adjusted Set Point in either heating or cooling. In Outdoor Reset, the SQ-Elite-8T controls a hot water heating system to provide a 1.25:1 1.25:1... -
Page 8: Pid Operation
Outdoor Cutoff, the SQ-Elite-8T will turn on/energize the lowest firing stage of the Lead Boiler to start the Purge Delay. After the elapse of the purge period, the SQ-Elite-8T will start calculating the Reaction Period. If after a full Reaction Time the control logic foresee additional stages are needed, the SQ-Elite-8T will energize the following stage. -
Page 9: Initial Setup
Heat Timer Corp. Technical Support either by Phone (973) 575-4004, Fax (973) 575-4052, or by E-mail support@heat-timer.com. Having an Initial Setup Program will ease the configuration of the SQ-Elite-8T and will provide the opportunity to utilize many of the energy saving features and give more comfortable heat when needed. - Page 10 The control of the DHW is based on either a temperature sensor, can be purchased separately, on the DHW source or using a dry contact from an aquastat. The SQ-Elite-8T provides multiple DHW Priority options based on the DHW piping. The Combustion Air Damper output can be used in conjunction with the PROVE input to check the status of the Combustion Air Damper’s End Switch, System Pump’s Flow Switch, or any other operating device before any stage is energized.
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Page 11: Installation
Do not replace the enclosure wiring cover until all wiring Wiring Cover Mounting Screws is done. Display Mounting Screws • When purchasing a padlock for the enclosure, the maximum shank diameter should not exceed ¼”. HEAT-TIMER CORP. 059063–00 REV. C... -
Page 12: Install The Sensors
• The sensor must be located where it sees the output of all the stages. If a unit is piped so that the sensor does not see its output, the SQ-Elite-8T will not sequence the units correctly. • Only use a Standard Brass Tube sensor (P/N 904250–00). -
Page 13: Outdoor Sensor Installation
Common Supply Pipe Pipe Insulation INSTALLATION OUTDOOR SENSOR INSTALLATION OUTDOOR SENSOR Seal around Outdoor Sensor • Only use the Heat-Timer sensor included with the unit (P/N 904220–00). Shield Connect sensor and wall snap-in location Sensor Probe To control • Locate the sensor in the shade on the north side of the building. The sensor should never be in direct sunlight. -
Page 14: Wiring
/SETBACK Unit1 Unit2 23 24 Pump Stages • Temperature sensors have no polarity. Connect the two wires from the sensor to the SQ-Elite-8T Stages CAUTION: Risk of Electric Shock. System Use Copper Conductors Only. terminals marked SYSTEM TEMP 27, 28. -
Page 15: Wiring The Domestic Hot Water (Dhw) Sensor
Risk of Electric Shock. 23 24 Lo Hi Lo Hi TO INPUT TERMINALS • This feature can be used whenever it is desirable to turn off the SQ-Elite-8T stage outputs from Stages Stages Use Copper Conductors Only. PROGRAM SENSORS MUST BE GOLD SERIES Comb. -
Page 16: Wiring The T-Stat
Unit1 Unit2 DO NOT APPLY ANY VOLTAGE CAUTION: Risk of Electric Shock. • This feature can be used whenever it is desirable to switch the SQ-Elite-8T to operate from a TO INPUT TERMINALS Unit1 Unit2 Stages Stages Use Copper Conductors Only. -
Page 17: Wiring The System Output
23 24 Pump DO NOT APPLY ANY OUTPUT RATING: 6 AMP RESISTIVE, • The SQ-Elite-8T will energize the DHW Pump whenever there is a call for DHW using a dry PROGRAM SENSORS CAUTION: Risk of Electric Shock. 1 AMP PILOT DUTY PER OUTPUT AT 120VAC. -
Page 18: Wiring The Stages
Stage E Stage F • If the SQ-Elite-8T is configured to operate Stage Pumps or Valves. They, must be wired to the stage output after the highest stage for that unit. That is, the low stage for the first unit must be connected to A and the higher stage of the same unit must be connected to Stage B. -
Page 19: Connecting To The Sq-Elite-Ext Panels
A or B using the switch on each extension to avoid having communication problem. • Extension A (Switch is set to “A”) will operate stages “I” through “P”. While Extension B (Switch is set to “B”) will operate stages “Q” through “X”. HEAT-TIMER CORP. 059063–00 REV. C... -
Page 20: Connecting 4-20Ma Ems Interface
CONNECTING SQ-ELITE TO TWO EXTENSION PANELS AND 4–20MA EMS INTERFACE USING RS485 SQ-ELITE SQ-ELITE-EXT A 6 Pin Phone Cable (provided with Extension) SQ-ELITE-EXT B 4–20mA EMS INTERFACE (–) 4–20mA EMS Signal 6 Pin Phone Cable (provided with 4–20mA EMS Interface) 059063–00 REV. C HEAT-TIMER CORP. -
Page 21: Connecting To Bacnet Interface Module
Set the BACnet parameters. See “BACnet MSTP Startup Menu” on page 55. BACnet INTERFACE MODULE SQ-ELITE-8S MODULE RS 485 Connection RS 485 Connection To BacNet MSTP RS 485 Connection 6 Pin Phone Cable SQ-ELITE EXTENSION MODULE RS 485 Connection 6 Pin Phone Cable HEAT-TIMER CORP. 059063–00 REV. C... -
Page 22: Display
All Unit Stages are set to ON. • All Unit Stages are set to OFF or unit does not exist. • Unit on Extension panel is not communicating back to the SQ-Elite-8T. • Unit Pumps are being controlled by the SQ-Elite-8T. •... - Page 23 DISPLAY DISPLAY MESSAGES The SQ-Elite-8T normal display layout reserved the second line for message indications. The following is a list of the most common Message Display Line information: • Summer The control is set to Summer. No heat is active.
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Page 24: Installer Menu Sequence
ACCESSING THE INSTALLER MENU • To be able to change the SQ-Elite settings the Program/Run Switch must be set to Program. PROGRAM • To access Installer Menu, hold down the Menu button for over three seconds. 059063–00 REV. C HEAT-TIMER CORP. -
Page 25: Startup Settings
BACK SAVE Cool-MakeOnRise <Histories> BACK SAVE <Configuration> ------ STAGING ------ BACK SELECT Multiple Outputs ---- DHW PIPING --- Single Output SQ-ELITE-8T V1.00 Parallel Outdoor reset BACK SAVE Primary/Secondary Heating-BreakOnRise BACK SAVE Day/Night Schedule -- TOTAL BOILERS -- DHW Parallel BACK... - Page 26 <Setback Schedule> BACK SAVE <DHW Settings> Setback ------ SETBACK ------- Run-On 2min DHW DIFFERENTIAL Pump Exercise 10 F BACK SELECT BACK SAVE BACK SAVE --- PUMP EXERCISE -- ------- RUN-ON ------- 2min BACK SAVE BACK SAVE 059063–00 REV. C HEAT-TIMER CORP.
- Page 27 ------ BOOST PERIOD--- <Prev Boiler> 30min - SET PRESENT TIME <Next Boiler> **:** BACK SAVE BACK SAVE BACK SAVE ------ SETBACK ------- -------- BOOST --------- BOILER AB RUNTIME 58hrs BACK CLEAR BACK SAVE BACK SAVE HEAT-TIMER CORP. 059063–00 REV. C...
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Page 28: Startup Sequence
-- OUTPUT A TYPE -- 4-20ma ---- DISPLAY UNIT --- 4-20mA • The EMS 4–20mA allows the SQ-Elite-8T to receive an external set point from an EMS/ 0-10v BMS system. This option requires the use of the 4–20mA EMS Interface (HT# 926741–00). 0-5v 2-10v •... -
Page 29: Setting The 4Ma And 20Ma Set Points
BACK SAVE • When Parallel is selected, the SQ-Elite-8T will offer a DHW Priority Timer. The DHW priority will only take place during heating periods. See the DHW Priority Timer on page 43. • The priority will allow the DHW Pump relay to energize while de-energizing the System relay when there is a DHW call during heating. -
Page 30: Dhw Pump Output
Hold Button: MENU/<System Startup>/../DHW Pump Output BACK SAVE • The SQ-Elite-8T can control the operation of the DHW Pump. This option allows the user BACK SAVE --DHW PUMP OUTPUT-- to select if the SQ-Elite-8T should be controlling the DHW Pump or not. -
Page 31: Boiler Output
-- BOILER OUTPUT -- Pump • The Pump option allows the SQ-Elite-8T to control the cooling or heating unit stages in None Valve addition to the unit pumps. The pump stage will run for the Run-On delay after the lower... -
Page 32: Control Logic
RESET MODE Short Open • When Stages-On is selected, the SQ-Elite-8T will turn all unit stages On when the System reads and the Outdoor is Short Open below the Outdoor Cutoff. When the Outdoor reads , the SQ-Elite-8T will change the Target to the Maximum Target. -
Page 33: Operating Settings
BACK SAVE 100° Wate • In Heating Mode, the SQ-Elite-8T will turn all boiler relays off when it is in Summer setting. --- SENSOR TYPE --- Summer The Message Display Line will read to show status. However, a DHW call will Set Point bring the boilers back on if needed. -
Page 34: Reset Ratio
-- AT OD TEMP.1 --- -- AT OD TEMP.2 --- 60 F -10 -20 Outdoor Temperature (in °F) BACK SAVE BACK SAVE Custom Reset Ratio -- OUTDOOR CUTOFF -- 70 F ----- SET POINT ----- 059063–00 REV. C HEAT-TIMER CORP. 70 F BACK SAVE... -
Page 35: Set Point
SAVE BACK SAVE Custom Reset Ratio • The SQ-Elite-8T will add, subtract, or hold the stages of the heating or cooling units to maintain the system temperature around the Set point. ----- SET POINT ----- 70 F • The system can be expected to fluctuate around the set point. The amount of fluctuation... -
Page 36: Target Offset
Set Point based on the Outdoor temperature, the Reset Ratio, and Max Target Point1: System=120°F Point2: System=170°F the Offset value. The SQ-Elite-8T will control all boilers to hold either the Set Point Point2 Oudoor=60°F Oudoor=0°F ---- MAX TARGET ---- Max Target temperature, or the Minimum Target, whichever is higher. -
Page 37: Boiler Minimum Return
Normally, this setting is provided by the boiler manufacturer or the system engineer. • The SQ-Elite-8T will use that value as a guide. It will start to add additional stages if it foresees that the RTN temperature will drop below the Min. Return. During that period, Hold Return at 120 it will display “... -
Page 38: Stage Settings
23 24 0.0min Reaction Time 1min <Lead Settings> --- PURGE DELAY ---- • After the SQ-Elite-8T turns on a stage trying to meet a set point, it will not turn on Purge Delay 0.0min BACK SELECT 0.0min Min Runtime BACK... -
Page 39: Standby Delay
-- THROTTLE RANGE -- • When the SQ-Elite-8T brings on the Lead Stage, the Set Point is quickly exceeded, and the Lead Stage is turned off. To prolong the run time during this type of condition, use the Last Stage Hold setting. -
Page 40: Throttle Range
— — — 170°F 180 - (2)THR 166 to 169°F — — — A,B,C 165°F 180 - (3)THR A,B,C A,B,C 161 to 165°F — — A,B,C — A,B,C,D 160°F 180 - (4)THR A,B,C,D — A,B,C,D 059063–00 REV. C HEAT-TIMER CORP. -
Page 41: Lead Settings
A, B, Then C. Then, stage D will be the new lead for the next load. ------ SETBACK ------- ------ SETBACK ------- BACK SAVE BACK SAVE ------ SETBACK ------- BACK SAVE ------ SETBACK ------- BACK SAVE BACK SAVE HEAT-TIMER CORP. 059063–00 REV. C... -
Page 42: Setback Schedule
• For example, if in heating the calculated temperature is 180°F and the Setback is 20°F, then when in Setback, the SQ-Elite-8T will hold a Set Point of 160°F (180°F - 20°F). • After selecting a value in Setback, you will be directed to the Boost menu. -
Page 43: Day/Night Schedules
In addition to the normal drop experienced between the boiler’s temperature and that read by the SQ-Elite-8T sensor, the Last Stage Hold setting must be accounted for. The boiler limit must be set above the Set Point PLUS the Last Stage Hold PLUS the normal drop experienced in the piping. -
Page 44: Dhw Settings
DHW Set Point and Differential control capability. BACK SELECT DHW Set Point 120 F • On a DHW call, the SQ-Elite-8T will raise the Target to either 200ºF or the Maximum DHW Diff. Target, which ever is lower. BACK SELECT •... -
Page 45: Dhw Set Point
This is the desired DHW temperature setting at which the DHW Pump relay will de-energize when reached. • The SQ-Elite-8T can accept a DHW call in two ways. An aquastat can provide a dry contact closure to terminals 33 and 34 is the first option. •... -
Page 46: Pump, Valve, And Combustion Air Damper Operation
Hold Button: MENU/<System Settings>/Pump Exercise BACK SAVE • The SQ-Elite-8T provides an option to exercise pumps for 10 seconds when not used for seven days. This option reduces pumps’ impellers locking after a long off-season period. 059063–00 REV. C HEAT-TIMER CORP. -
Page 47: Maintenance
-EMS 4ma SETPOINT - Hold Button: MENU/<Histories> Outdoor reset BACK NEXT Heating-BreakOnRise The SQ-Elite-8T provides users with a graphical history of the System, Outdoor, DHW, and Return Day/Night Schedule ▲ ▼ BACK SAVE sensors for the previous 24 hours. The temperatures are sampled every 12 minutes. That is,... -
Page 48: Boiler/C.unit Setting
Button: BOILER/Mode CAUTION: Risk of Electric Shock. Use Copper Conductors Only. --- SENSOR TYPE --- • The SQ-Elite-8T only controls any unit set to Auto or (after a delay) those set to Standby. Set Point BACK SAVE Set Point •... -
Page 49: User Menu Sequence
SELECT BACK SAVE BACK SAVE • When in Heating mode, the SQ-Elite-8T will turn all boiler relays off when it is in Summer --- SENSOR TYPE --- Summer setting. The Message Display Line will read to show status. Set Point •... -
Page 50: Set Point
The Set point is the temperature value the SQ-Elite-8T will use to control the system. ----- SET POINT ----- With a 0° • The SQ-Elite-8T will add, subtract, or hold the stages of the heating or cooling units to ratio curve 70 F maintain the system temperature around the Set point. -
Page 51: Customized Reset Ratio
• When the outdoor temperature rises to the Outdoor Cutoff plus a 2°F differential, the SQ-Elite-8T will turn all boilers off. The System and Comb. Air relays that were energized will remain energized for the Run-On delay. -- DAY SCHEDULE ---- 07:**Am •... -
Page 52: Setback
Button: MENU/Setback BACK SAVE • The Setback feature can be used to provide the SQ-Elite-8T with a lower Set Point when less load is required. • In Heating applications, when the outdoor temperature falls to the adjustable Outdoor Cutoff temperature, the SQ-Elite-8T will control and sequence the boiler stages to hold ---- SETBACK ------- the calculated temperature. -
Page 53: Pumps Piping/Wiring Diagrams
Building Heating Loop Building Heating Loop Heat-Timer Corp. is aware that each SQ-Elite-8 SQ-Elite-8 installation is unique. SEQUENCING CONTROL SEQUENCING CONTROL Thus, Heat-Timer Corp. SYS= F OD= SYS= F OD= is not responsible for Stage A Stage E Stage A... -
Page 54: Troubleshooting
Temperature Display. DISPLAY SHOWS SENSOR SHORT The SQ-Elite-8T sees a short across the input terminals. Remove the wires from the sensor terminals. The display should change to read OPEN. If it doesn’t, the SQ-Elite-8T may be damaged. DISPLAY SHOWS AN INCORRECT TEMPERATURE DISPLAY Remove the wires from the sensor terminals. -
Page 55: Control Operation
117720 Check if the control has any of the following conditions: 82823 • Domestic Hot Water call—The SQ-Elite-8T will raise the temperature of the system to either 200˚F or Maximum Target on a DHW call. 59076 • Reset Ratio and Offset—If excessive heat occurs only in certain weather conditions, 42683 adjust the Reset Ratio and Offset (See Understanding Operating Concept on page 6). -
Page 56: Bacnet
Button: MENU/<System Startup>/../MSTP Address/BACnet ID • The BACnet ID is a unique 32 bit number that identifies the control within the BACnet ▲ ▼ BACK SAVE network. No two ID shall be the same even if dealing across networks. 059063–00 REV. C HEAT-TIMER CORP. -
Page 57: Elite Series Bacnet Pics Statement
20 New Dutch Lane, Fairfield, NJ 07004 • (973)575-4004 PRODUCT DESCRIPTION Various controls for heating applications for multiple boilers. Includes Mini MOD, Mini MOD-CNC, SQ-8T ELITE, SQ-8S ELITE and SQ-MOV ELITE (See https://www.heat-timer.com for more information). BACNET STANDARDIZED DEVICE PRO ILE (ANNEX L) PRODUCT... -
Page 58: Sq 8T-Bacnet Variable List
Integer Values Only (0,1,2,…) Write Purge Delay 1500 Analog Read / PURDLY Minutes 1 thru .9 after Integer Values Only Write (1,2,3…) Minimum Run 1600 Analog Read / MINRUN Minutes Integer Values Only (1,2,…) Time Write 059063–00 REV. C HEAT-TIMER CORP. - Page 59 Output Boiler C 3600 Analog Read MODC Percent Modulating Only Modulation: = 0% -100%, Output Boiler D 3700 Analog Read MODD Percent Modulating Only Output Boiler E 3800 Analog Read MODE Percent Modulating Only Output HEAT-TIMER CORP. 059063–00 REV. C...
- Page 60 Output Boiler G 4000 Analog Read MODG Percent Modulating Only Output Modulation: = 0% -100%, Boiler H 4100 Analog Read MODH Percent Modulating Only output Boiler I 4200 Analog Read MODI Percent Modulating Only Output 059063–00 REV. C HEAT-TIMER CORP.
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Page 61: Specifications
1 Power (Dual Color Green (A)/Red (B)), 1 Communication, 8 Stage Output relays (Dual Color Green (A)/Red (B)) Stage Outputs 8 N.O. S.P.S.T. Output Built-in Relay Ratings 2 Amp inductive (Maximum of 1/4 HP) at 120 VAC 60 Hz Connection to SQ-Elite and another SQ-Elite-EXT Two RS485 HEAT-TIMER CORP. 059063–00 REV. C... -
Page 62: Notes
NOTES 059063–00 REV. C HEAT-TIMER CORP. - Page 63 NOTES HEAT-TIMER CORP. 059063–00 REV. C...
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Page 64: Warranty
Heat-Timer Corporation will invalidate the warranty. Batteries are not included in this warranty. This warranty applies only to the original user and is not assignable or transferable. Heat-Timer Corporation shall not be responsible for any maladjustments of any control installed by Heat-Timer Corporation. It is the users responsibility to adjust the settings of the control to provide the proper amount of heat or cooling required in the premises and for proper operation of the heating or cooling system. - Page 65 20 NEW DUTCH LANE, FAIRFIELD, NJ 07004 PHONE: 973-575-4004 FAX: 973-575-4052 HEAT-TIMER.COM...
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