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Heat-Timer Corp.

059040-00 C

MInI-Mod overvIeW

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ModulatIng logIc overvIeW

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understandIng operatIon concept

Reset Ratio/Outdoor Reset . . . . . . . . . .5

MInI-Mod layout

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MInI-Mod-extensIon layout

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Make Sure You Have the Right Control

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InItIal setup

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Selecting the System Features

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InstallatIon

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Mounting the Enclosure

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Install the Sensors

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Heating System Sensor (HSS) Installation. . 10

Outdoor Sensor Installation . . . . . . . . . 10

Wiring

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Wiring the Power . . . . . . . . . . . . . . . 11

Wiring the Sensors . . . . . . . . . . . . . . 11

Wiring the Shutdown, Tstat, or Setback . . . 11

Wiring the Prove . . . . . . . . . . . . . . . 12

Wiring the Domestic Hot Water Call DHW . . 12

Wiring the System Output . . . . . . . . . . 12

Wiring the Boilers . . . . . . . . . . . . . . 13

Wiring to Modulating Output . . . . . . . . . 13

Menu sequence

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Connecting Extension Panels . . . . . . . . 16

Startup Settings

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Program Change Settings . . . . . . . . . . 17

Startup Sequence . . . . . . . . . . . . . . 17

Sensor Type . . . . . . . . . . . . . . . . . 17

EMS Input Mode . . . . . . . . . . . . . . . 17

Output Type . . . . . . . . . . . . . . . . . 17

Modulating Mode . . . . . . . . . . . . . . . 18

Prove/Domestic Hot Water (DHW) Priority. . 18

Domestic Hot Water Set Point . . . . . . . . 18

Shutdown/Tstat/Setback Mode . . . . . . . . 18

Boost Mode . . . . . . . . . . . . . . . . . 19

Sensor Fault . . . . . . . . . . . . . . . . . 19

Setting the Control to Factory Defaults

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Operating Settings

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Program Change Settings . . . . . . . . . . 20

Season . . . . . . . . . . . . . . . . . . . . 20

Set Point . . . . . . . . . . . . . . . . . . . 20

Reset Ratio. . . . . . . . . . . . . . . . . . 20

Outdoor Cutoff Temperature . . . . . . . . . 21

Offset . . . . . . . . . . . . . . . . . . . . . 21

Minimum Water Temp . . . . . . . . . . . . 21

Maximum Water Temp . . . . . . . . . . . . 22

System Settings

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Gain . . . . . . . . . . . . . . . . . . . . . 22

Lead Boiler Rotation . . . . . . . . . . . . . 23

Purge Delay . . . . . . . . . . . . . . . . . 23

Lag Delay . . . . . . . . . . . . . . . . . . 23

Standby Delay . . . . . . . . . . . . . . . . 24

Run-On . . . . . . . . . . . . . . . . . . . . 24

Setback. . . . . . . . . . . . . . . . . . . . 24

Last Stage Hold . . . . . . . . . . . . . . . 24

Day/Night Schedules . . . . . . . . . . . . . 25

Set Time . . . . . . . . . . . . . . . . . . . 25

History

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Maintenance

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System & Outdoor Sensor Trim . . . . . . . 27

Soft-Off Delay . . . . . . . . . . . . . . . . 27

Output Trim. . . . . . . . . . . . . . . . . . 27

Configuration . . . . . . . . . . . . . . . . . 28

Display . . . . . . . . . . . . . . . . . . . . 28

Boiler Stage Settings

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Mode . . . . . . . . . . . . . . . . . . . . . 29

Ignition %. . . . . . . . . . . . . . . . . . . 30

Modulation Start % . . . . . . . . . . . . . . 30

Copy Settings - Boiler A Only . . . . . . . . 30

troublesHootIng

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dIrect HeatIng pIpIng dIagraM

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dIrect HeatIng WIrIng dIagraM

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4-20Ma eMs Interface

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Warranty

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specIfIcatIons

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Mini-MOD Specifications

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Mini-MOD Extension Specifications

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contents

Содержание Mini-MOD

Страница 1: ...D ENERGY MANAGEMENT EQUIPMENT 99RA SYSTEM A B C D Full Modulation Sequencing Control 1 2 RUN PROGRAM FOR ALL CIRCUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 12VA MAX INPUT RATINGS USE COPPER CONDUCTORS ONLY DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS 3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 22 20 19 21 24 23 29 25 27 26 28 32 30 31 L N T T O O RS 485 mA GND VLT SYS ...

Страница 2: ...Mode 17 Output Type 17 Modulating Mode 18 Prove Domestic Hot Water DHW Priority 18 Domestic Hot Water Set Point 18 Shutdown Tstat Setback Mode 18 Boost Mode 19 Sensor Fault 19 Setting the Control to Factory Defaults 19 Operating Settings 20 Program Change Settings 20 Season 20 Set Point 20 Reset Ratio 20 Outdoor Cutoff Temperature 21 Offset 21 Minimum Water Temp 21 Maximum Water Temp 22 System Set...

Страница 3: ...t promotes even wear on each stage The Mini MOD has three modes of rotation Manual Last On or Time The Time rotates the lead stage every selected time period from every hour to every 60 days Outdoor Reset The Mini MOD has a hydronic outdoor temperature reset function This allows the Mini MOD to change the set point based on outdoor temperature Furthermore additional settings have been added to fin...

Страница 4: ...oiler purge initiation The lead boiler shall resume its modulation while the lag boiler is in purge until the lead boiler reaches full fire 100 modulation Any additional heat requirements will trigger the control to increase the lag boiler modulation When the Mini MOD PID requires reduced output it will reduce the modulation of the lag boiler until it reaches its Ignition That shall be followed by...

Страница 5: ...crease 20 to 120 F Each building has different heat loss characteristics A very well insulated building will not lose much heat to the outside air and may need a Reset Ratio of 2 00 OD 1 00 SYS Outdoor Water This means the outdoor temperature would have to drop 2 degrees to increase the water temperature 1 degree On the other hand a poorly insulated building with insufficient radiation may need a ...

Страница 6: ...RA Mini MOD The digital display shows the system status set point lead stage in brackets and status of each stage To view and adjust settings press the appropriate buttons 120VAC Power Four N O Boiler startup relay outputs Each is wired in series with each boiler s limit circuit System Output controls pumps valves or other system components Four modulation outputs can be 0 5V 0 10V 1 5V 2 10V or 4...

Страница 7: ...4 K M O L N P E F G H K M L N 15 GND 18 GND 21 GND 24 GND 29 28 VLT mA CUR VLT 32 31 16 VLT mA GND CUR VLT 27 GND 30 GND I J O P ENCLOSED ENERGY MANAGEMENT EQUIPMENT 99RA 120VAC Power Six N O Boiler startup relay outputs Each is wired in series with the boiler s limit circuit Six modulating outputs can be 0 5V 0 10V 1 5V 2 10V or 4 20ma Go to Mini MOD or Mini MOD CNC Startup Menu to determine the ...

Страница 8: ...eves better fuel savings in addition to better comfort Number of Stages The Mini MOD can be configured to control up to 4 modulating boilers It can control up to 16 boiler stages using a maximum of two Mini MOD Extension Panels Modulation Mode The Mini MOD can stage boilers using one of two methods Normal Modulation Mode allows it to increase the modulation of the lead boiler When the lead boiler ...

Страница 9: ...ure components mount on the base The bottom section of the Enclosure Base contains the wiring chamber with knockouts on the bottom to easy installation The Enclosure Wiring Cover seals the wires from the external environment It has two screws to hold it the base and a hole to secure a lock on the wiring enclosure A plastic web that separates the wiring chamber into high and low volt sections has b...

Страница 10: ...20 00 Locate the sensor in the shade on the north side of the building The sensor should never be in direct sunlight Be sure the location is away from doors windows exhaust fans vents or other possible heat sources The sensor should be mounted approximately 10 feet above ground level Adhere the Outdoor Label provided to the back of the sensor base Use the Enclosure Base bottom knockout for the con...

Страница 11: ... de energize the equipment before servicing ENCLOSED ENERGY MANAGEMENT EQUIPMENT 99RA Outdoor Sensor Sensor Shiled Outdoor Sensor Wiring Terminals 25 26 When Outdoor Reset is selected the Mini MOD will vary the system Set Point based on outdoor temperature Whether in Set Point or Outdoor Reset modes the outdoor sensor can be used as an Outdoor Cutoff The Mini MOD will disable all boilers when the ...

Страница 12: ...VLT mA GND VLT mA TEMP OUTDOOR O O TEMP SYSTEM EXTENSIO MODULE CUR VLT B CUR VLT C CUR VLT D PROVE DHW SHUTDOWN SETBACK FOR ALL CIRCUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 30VA MAX INPUT RATINGS USE COPPER WIRE CLASS 1 WIRE ONLY CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the equipment before servicing TSTAT ENCL...

Страница 13: ...nal on the Mini MOD marked mA That is for boiler A the modulating terminal will be 14 SYSTEM A B C D 1 2 PROGRAM 3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 L N mA GND VLT SYS A B C D PWR CUR VLT A mA GND VLT CUR VLT B FOR ALL CIRCUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 30VA MAX INPUT RATINGS USE COPPER WIRE CLASS 1 WIRE ONLY CAUTION RISK OF ELECTRIC SHOCK More tha...

Страница 14: ...s 1 00 o OD 1 25 o Sys 1 00 o OD 1 00 o Sys 1 25 o OD 1 00 o Sys 1 50 o OD 1 00 o Sys 2 00 o OD 1 00 o Sys 3 00 o OD 1 00 o Sys 4 00 o OD 1 00 o Sys BACK SAVE OFFSET 0 o F BACK SAVE EMS 4ma SETPOINT 120 o F BACK SAVE EMS 20ma SETPOINT 220 o F BACK SAVE SET POINT 70 o F BACK SAVE PROVE DHW SHARING Prove DHW Priority DHW No Priority No Priority Summer BACK SAVE BOOST MODE 30 Minutes Disable BACK SAV...

Страница 15: ...SELECT DAY NIGHT SCHEDULES Set Time Day Schedule Night Schedule BACK SELECT MAINTENANCE System Trim 0o F Outdoor Trim 0 o F Soft Off Delay 45sec Output Trim Configuration BACK SELECT MAINTAINANCE GAIN 0 BACK SAVE LEAD ROTATION Manual Time Last On BACK SAVE SOFT OFF DELAY 45sec BACK SAVE OUTDOOR SENSOR TRIM 0 o F BACK SAVE SYSTEM SENSOR TRIM 0 o F BACK SAVE CONFIGURATION v 1 03 Reset o F Normal Day...

Страница 16: ...O P Mini MOD Extension A Extension Module Full Modulation Sequencing Extension F H J Power CAUTION Risk of Electric Shock More than one disconnect switch may be required to de energize the equipment before servicing PWR L N 1 2 E 3 4 F 5 6 G 7 8 H 9 10 I 11 12 EXTENSION MODULE RS 485 Ext A INPUT RATINGS 115VAC 60Hz 12VA MAX Use Copper Conductors Only OUTPUT RATINGS 120VAC 6A RESISTIVE 1A PILOT DUT...

Страница 17: ...r The same Heat Timer temperature sensor can display in either F or C If F is selected all temperatures and settings will be displayed in degrees Fahrenheit and the Mini MOD will operate as a Set Point Control in degrees Fahrenheit If C is selected all temperatures and settings will be displayed in degrees Celsius and the Mini MOD will operate as a Set Point Control in degrees Celsius Set point mo...

Страница 18: ...d the temperature target will remain at the DHW Set Point After the DHW call expires the set point will drop to satisfy the reset ratio or set point Domestic Hot Water No Priority allows the SYS relay mostly controlling a primary system pump to remain energized during a domestic hot water call aquastat call on terminals 29 and 30 However in Summer Shutdown No Tstat call for heat or when outdoor te...

Страница 19: ...ers On to 100 when the System reads Short or Open and the outdoor temperature is below Outdoor Cutoff However when the Outdoor reads Short or Open the Mini MOD will try to maintain the Maximum Water Temperature When All Off is selected the Mini MOD will turn all boilers Off when either the System or the Outdoor sensor reads Short or Open However when the Outdoor reads Short or Open the Mini MOD wi...

Страница 20: ...lation Mode System Settings and Stage Settings If the EMS Mode was Enabled the Set Point will be set by the EMS BMS system and will be available to be read but not changed on the display SET POINT 70 o F BACK SAVE Reset Ratio Adjustable 1 00ºOD 4 00ºSys to 4 00ºOD 1 00ºSys Default 1 00ºOD 1 00ºSys Button MENU Set Point Only available when Reset is selected as the Sensor Type The Reset Ratio determ...

Страница 21: ...ase of 10 then the Set Point temperature would increase to 140 F OFFSET 0 o F BACK SAVE Outdoor Temperature in F 70 60 50 40 20 30 0 10 10 20 120 140 130 150 160 170 180 100 110 Water Temperature in F Custom Reset Ratio Point1 System 120 F Oudoor 60 F Point2 System 170 F Oudoor 0 F Point1 Point2 Custom ized Reset Ratio Max Target Min Target Outdoor Temperature in F 70 60 50 40 20 30 0 10 10 20 120...

Страница 22: ...E COPPER CONDUCTORS ONLY 3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 22 20 19 21 24 23 L N mA GND VLT SYS A B C D PWR CUR VLT A mA GND VLT mA GND VLT mA GND VLT mA CUR VLT B CUR VLT C CUR VLT D CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the equipment before servicing ENCLOSED ENERGY MANAGEMENT EQUIPMENT 99RA M Gain Lead Rotation Purge Delay Lag Delay...

Страница 23: ...1 5min will equal 90 seconds The Message Display Line will display Purge Delay and the amount of time remaining in the purge PURGE DELAY 0 0 min BACK SAVE Alert Set Purge Delay as per boiler manufacturer recommendation Lag Delay Adjustable from 0min to 60min Default 0min Button MENU System Settings Lag Delay The Lag Delay requires the previous stage to remain at 100 modulation for the full period ...

Страница 24: ...main display indicating this condition For example if the calculated temperature is 180 F and the Setback is 20 F then when in Setback the Mini MOD will hold a Set Point of 160 F 180 F 20 F A typical use for Setback is to provide less system temperature to a building during the night or on the weekends when building is not occupied but heat is still required The amount of Setback selected is subtr...

Страница 25: ...tdown Tstat Setback Startup menu option only Button MENU System Settings More Settings Day Night Schedules The Mini MOD has two levels of heat The Day Normal level is used when a building is occupied and people are active The Night Setback level is used when a building is not occupied or when people are sleeping This setting reduces the calculated temperature by the Setback setting See Setback on ...

Страница 26: ...adings of both System and Outdoor temperatures are recorded and stored every 12 minutes for the last 24 hours To view the values of specific time period use the two middle buttons to scroll to that time and read the upper left temperature The first screen will be the System Temperature History By clicking on the Next button you ll be able to view the Outdoor Temperature History SYS 91 o F 10 57Am ...

Страница 27: ...match that reported on the radio or TV Outdoor temperature can vary widely over a broadcast range Only trim the outdoor sensor based on an accurate thermometer reading taken where the sensor is located SYSTEM SENSOR TRIM 0 o F BACK SAVE OUTDOOR SENSOR TRIM 0 o F BACK SAVE Soft Off Delay Adjustable from 0sec to 60sec Default 45sec Button MENU Maintenance Soft Off Delay When a stage is no longer nee...

Страница 28: ...age ON Boiler Stage Mode is set to ON and boiler is firing at 100 boiler is in bypass See Mode on page 29 OFF Boiler Stage Mode is set to OFF and boiler stage is unavailable or boiler does not exist See Mode on page 29 m95 Boiler Stage Mode is set to Manual and set to the specified percent See Mode on page 29 C E Boiler on Extension panel is NOT communicating to the Mini MOD See Connecting Extensi...

Страница 29: ...CUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 12VA MAX INPUT RATINGS USE COPPER CONDUCTORS ONLY 3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 22 20 19 21 2 23 L N mA GND VLT SYS A B C D PWR CUR VLT A mA GND VLT mA GND VLT mA GND mA CUR VLT B CUR VLT C CUR VL D CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the equipment befor...

Страница 30: ... reaches 40 of lag boiler s Modulation Start or 2 above the Ignition Point whichever is higher Using the same example as the load decreases Boiler B would modulate down to its Ignition Boiler A would then modulate down to 30 Only then would Boiler B turn off If the Lag Delay is set to anything other than 0 a boiler must always go up to 100 modulation before the next boiler is activated However the...

Страница 31: ...ult in Reset mode will de energize all stage relays Check the display for sensor values System or Outdoor Sensor If the System or Outdoor sensor reading was higher that the actual temperature the Mini MOD might not bring any stage on Check Display shows an Incorrect Temperature section Too Much Heat Domestic Hot Water call The Mini MOD will raise the temperature of the system to the DHW Set Point ...

Страница 32: ... 30VA MAX INPUT RATINGS USE COPPER WIRE CLASS 1 WIRE ONLY CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the equipment before servicing TSTAT SYSTEM Mini MOD CNC Condensing and Non Condensing OD 25o F SYS 145o F A B C D 100 52 Condensing Modulating Condensing Modulating Non Condensing Sequencing Non Condensing Sequencing System The Mini MOD controls 4...

Страница 33: ...N SETBACK FOR ALL CIRCUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 30VA MAX INPUT RATINGS USE COPPER WIRE CLASS 1 WIRE ONLY CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the equipment before servicing TSTAT Boiler 3 Boiler 4 SYSTEM A B C D 1 2 RUN PROGRAM DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS 3 4 5 6 7 8 9 10 11 1...

Страница 34: ... C D PWR CUR VLT A mA GND VLT mA GND VLT mA GND VLT mA TEMP OUTDOOR O O TEMP SYSTEM EXTENSION MODULE CUR VLT B CUR VLT C CUR VLT D PROVE DHW SHUTDOWN SETBACK FOR ALL CIRCUITS 120VAC 6A RESISTIVE OUTPUT RATINGS 1A PILOT DUTY 15A TOTAL 115VAC 60Hz 30VA MAX INPUT RATINGS USE COPPER WIRE CLASS 1 WIRE ONLY CAUTION RISK OF ELECTRIC SHOCK More than one disconnect switch may be required to de energize the...

Страница 35: ... the heating system boilers or electrical power system that is required for proper operation of any controls or other equipment installed by Heat Timer Corporation or any contractor Third Party products and services are not covered by this Heat Timer Corporation warranty and Heat Timer Corporation makes no representations or warranties on behalf of such third parties Any warranty on such products ...

Страница 36: ... Outdoor System Water Offset Adjustment 50F 28C to 50F 28C Minimum Water Temperature 70 F 21 C to 180 F 82 C Maximum Water Temperature Reset Only 90 F 32 C to 240 F 116 C Set Point Temperature Range 70 F 21 C to 250 F 121 C EMS Temperature Range 70 F 21 C to 240 F 116 C Domestic Hot Water with Priority without Priority without Priority in Summer DHW Set Point Temperature Range 140 F 60 C to 200 F ...

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