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DuoMix Installation Handbook

16

Cold Weather Cut

Off

Item

°

F

Adjust

Item

Adjust

Item

°

F

Adjust

Item

hr

Adjust

°

F

Adjust

Slab Melting

Temperature

Slab Idling

Temperature

Maximum

∆

T

Melting Run Time

Maximum Supply

Temperature

°

F

Adjust

Misc. Menu

Units (

°

F -

°

C)

Item

Misc

Item

Misc

°

F

Misc

Display Contrast

Display Backlight

THE CONTROL AUTOMATICALLY GOES BACK TO THE VIEW MENU WHEN THE BUTTONS ARE LEFT ALONE FOR 20 SECONDS

MIXING 2 IN SNOW MELTING MODE

MIXING 2 IN SETPOINT MODE

°

F

Adjust

°

F

Adjust

Warm Weather Shut

Down

Desired Setpoint

Temperature

Item

Item

Design Outdoor

Temperature

°

F

Adjust

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Содержание DuoMix 201

Страница 1: ...nditions the area experiences over the heating season If the heat demand is analyzed as a percentage of the heating systems capacity the heating system operates at or near maximum capacity for asmallp...

Страница 2: ...thermally shocked Proper protection of the boiler under these circumstances requires modulating mixing devices that can temporarily reduce the heating load This is accomplished by reducing the speed o...

Страница 3: ...er Protection A boiler sensor must be installed on the return line to the boiler in order to obtain boiler protection against flue gas condensation if required If the boiler return water temperature a...

Страница 4: ...slab supply and return fluid temperatures If this temperature difference approaches the T MAX setting the control operates the variable speed injection pump 2 to maintain the T at the T MAX setting T...

Страница 5: ...window openings In order to prevent heat that is transmitted through the wall from affecting the sensor reading it may be necessary to install an insulating barrier behind the enclosure The A3060070 s...

Страница 6: ...e from the mixing 2 system pump to the Mix2 Pmp 8 terminal on the control Connect the second wire on the mixing 2 system pump to the N 7 terminal The control provides 120 V ac to the Mix2 Pmp contact...

Страница 7: ...17 and 18 terminals on the control Slab Return Sensor 2 Ret2 Slab Return Sensor measures the return glycol temperature from the slab If the mixing 2 section is used for snowmelting connect the two wir...

Страница 8: ...jection pump of the mixing 1 section is used make sure power to the terminal block is off and install a jumper between the terminals N Var1 Pmp 13 and 14 When power is applied to terminals the variabl...

Страница 9: ...mixing 1 section will be skipped RST reset When using the mixing 1 section for building space heating the installer should select this adjustment The 201 control operates the mixing 1 section to provi...

Страница 10: ...ly water temperature this setting must be selected The control operates the mixing 2 section to provide a fixed setpoint temperature equal to the SETPNT 2 temperature adjustment SNOW melting If sectio...

Страница 11: ...ion pump to maintain the T at the T MAX setting The T MAX setting can be adjusted from 10 to 70 F 5 to 39 C Factory setting is 30 F CWCO Cold Weather Cut Off CWCO is the lowest temperature at which th...

Страница 12: ...Pumps Displays when mixing pumps 1 or 2 are on 2 Warning Displays when an error is present Lock Unlock Displays whether keypad is locked or unlocked WWSD WWSD Displays when control is in Warm Weather...

Страница 13: ...ng Idling CWCO 1 2 Target Mixing 2 Temperature Item Menu Start Stop F View Mix 1 Demand Mix 2 Demand Minimum Maximum Melting Idling CWCO 1 2 F 1 View Mix 1 Demand Mix 2 Demand Minimum Maximum Melting...

Страница 14: ...Minimum Maximum Melting Idling CWCO 1 2 Outdoor temperature If a mixing 1 section is turned off the View Items from that section are skipped Dashes on the TARGET item denote heat is not required in th...

Страница 15: ...Shut Down Desired Setpoint Temperature Item F Adjust Item F Adjust Design Outdoor Temperature F Adjust Adjust Mixing 2 Section Off Mixing 2 Section in Reset Mode Mixing 2 Section in Setpoint Mode Adju...

Страница 16: ...e Maximum Supply Temperature F Adjust Misc Menu Units F C Item Misc Item Misc F Misc Display Contrast Display Backlight THE CONTROL AUTOMATICALLY GOES BACK TO THE VIEW MENU WHEN THE BUTTONS ARE LEFT A...

Страница 17: ......

Страница 18: ...Display Menu Cont...

Страница 19: ...injection pump 2 Var 2 Pmp is ramped down to 0 over 10 seconds If the mixing 2 section is not used i e MODES 2 set to OFF N A is displayed and the pump is not operated STEP 6 The mixing 2 pump Mix2 P...

Страница 20: ...l displays OUTDOOR SHRT When a fault with the outdoor sensor is present the control assumes a fixed outdoor temperature of 32 F During snow melting operation the control assumes an outdoor temperature...

Страница 21: ...2 Boiler return short circuit 1 View 1 2 Boiler return sensor open circuit REFER TO THE TROUBLESHOOTING SECTION ABOVE FOR OPERATION DETAILS Return 2 Sensor Fault When the mixing 2 section is set to S...

Страница 22: ...DuoMix Installation Handbook 22...

Страница 23: ...DuoMix Installation Handbook 23...

Страница 24: ...DuoMix Installation Handbook 24...

Страница 25: ...DuoMix Installation Handbook 25...

Страница 26: ...e it con tinually injects high temperature water at a fixed rate Text and diagrams used with permission from tekmar When the high temperature supply fluctuates and or varying water temperatures are re...

Страница 27: ...the mixing occur directly after the point of injection downstream of the return to the hot loop See Figures 4 5 Advantages This type of system can use a small circulator to inject a high BTU input in...

Страница 28: ...igures 4 5 show the two most common piping layouts for Variable Speed Injection Mixing Pay particular attention to the drop lines or thermal traps shown in the injection legs These are particularly im...

Страница 29: ...rundfos 15 42 Speed 2 9 5 7 4 100 Taco 007 10 8 3 100 Grundfos Brute or 15 42 Speed 2 14 12 100 1 Taco 007 Grundfos Brute or 15 42 Speed 3 23 20 100 1 Grundfos 26 64 Taco 0010 35 31 100 1 Grundfos 43...

Страница 30: ...DuoMix Installation Handbook 30...

Страница 31: ...DuoMix Installation Handbook 31...

Страница 32: ...DuoMix Installation Handbook 32...

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