Taco PC705-2 Скачать руководство пользователя страница 10

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Display Operation

Start

TARGET

DSGN

BOIL

MIX

OUTDR

WWSD

MAX

MIN

Mixing

Demand

% Out

10 30 50 70 90

VIEW

ADJUST

Start

OUTDR

Mixing

Demand

% Out

10 30 50 70 90

VIEW

Start

TARGET

MIX

Mixing

Demand

% Out

10 30 50 70 90

VIEW

Start

OUTDR

Mixing

Demand

% Out

10 30 50 70 90

VIEW

Start

MIX

Mixing

Demand

% Out

10 30 50 70 90

VIEW

Start

BOIL

Mixing

Demand

% Out

10 30 50 70 90

VIEW

Start

MIX

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

DSGN

OUTDR

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

WWSD

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

OUTDR

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

MIX

MAX

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

DSGN

MIX

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

Start

BOIL

MIN

Mixing

Demand

% Out

10 30 50 70 90

ADJUST

On power up, the
control displays all
segments for 2
seconds, followed
by the control
version number.

The control then
automatically goes
to operating mode,
and displays the
outdoor
temperature.

Outdoor
Temperature

The outdoor
temperature is
displayed when the
OUTDR element is
turned on

Mixing
Temperature

Press and release
the

Item

button until

the MIX element is
displayed.

Mixing Target
Temperature

Press and release
the

Item

button until

the MIX TARGET
elements are
displayed.

Boiler
Temperature

Press and release
the

Item

button until

the BOIL element is
displayed.

To view all control settings, the

Item

button may be pressed and held while in the View Menu. The contol will then scroll through all

the adjustable items.

MIX Start

Use the and
buttons to set the
desired mixing
starting
temperature.

OUTDR Start

Press and release
the

Item

button.

Use the and
buttons to set the
desired outdoor
starting
temperature.

MIX DSGN

Press and release
the

Item

button.

Use the and
buttons to set the
mixing design
temperature.

OUTDR DSGN

Press and release
the

Item

button.

Use the and
buttons to set the
outdoor design
temperature.

BOIL MIN

Press and release
the

Item

button.

Use the and
buttons to set the
boiler minimum
temperature.

MIX MAX

Press and release
the

Item

button.

Use the and
buttons to set the
mixing maximum
temperature.

WWSD

Press and release
the

Item

button.

Use the and
buttons to set the
desired WWSD
temperature.

Units

Press and release
the

Item

button.

Use the and
buttons to select
between

F and

POWER UP

VIEW MENU

ADJUST MENU

To enter the adjustment mode,

Press

and

Hold

simultaneously, the

Item

, and Buttons. The

ADJUST

element will turn on.

The control automatically goes back to viewing when the buttons are left alone for 20 seconds

All settings will be saved even during power down of the control

Содержание PC705-2

Страница 1: ...ng system the heat supplied to the building must equal the heat lost by the building The heat supplied to a building is proportional to the temperature of the water and the surface area of the heating element A small surface area such as baseboard radiators requires a higher water temperature than a larger surface area such as radiant floors The heat lost from a building is dependent on the outdoo...

Страница 2: ...up the flue and reduced boiler jacket losses Differential An on off boiler must be operated with a differential in order to prevent short cycling When the supply water temperature drops below the bottom rail of the differential the boiler is turned on The boiler is then kept on until the supply water temperature rises above the top rail of the differential If the differential is too wide there can...

Страница 3: ...hen all zones are turned on If one of these variables is unknown use Equation 1 or 2 to calculate the other variable 3 Compute Tb Ts Look up the flow ratios on Figure 2 4 The design injection flow rate for direct injection is calculated from Equation 3 If the injection flow rate is greater than 45 US GPM it may be necessary to use a 4 way mixing valve instead of a variable speed injection system 5...

Страница 4: ...the injection pump SYSTEM PUMP OPERATION ThePC705 2hasaninternalsystempumpcontact ThiscontactturnsonwhenthePC705 2hasamixingdemandandisnotinaWWSD The system pump as well as the boiler pump may be controlled by this relay By providing proper flow in the boiler loop the boiler temperature can be accurately controlled based on the mixing load Equation1 System Flow Rate US GPM Design Heating Load Btu ...

Страница 5: ... push the front cover onto the enclosure until it snaps into place The variable speed injection pump and system pump wiring terminates in the electrical box All other electri calwiringterminatesinthetwowiringchambersonthe control The wiring is roughed in to the electrical box prior to installation of the control BOILEROPERATION Boiler Sensor Installed WhilethePC705 2hasamixingdemand theboilersuppl...

Страница 6: ...T T Zone 4 Zone 3 Zone 2 Zone 1 END SWITCH A Zone 4 Zone 3 Zone 2 Zone 1 Taco Zone Control ZVC404 EXP END SWITCH B T Boiler Pump Injection Pump Boiler Pump System Pump Injection Pump 120 V ac Outdoor Sensor Boiler Sensor Supply Sensor Priority Zone Switch set to ON DHW Tank T T T T POWER Zone 4 Zone 3 Zone 2 Zone 1 INPUT END SWITCH ZR X X ZC Zone 4 Zone 3 Zone 2 Zone 1 Taco Zone Control SR 506 EXP...

Страница 7: ...3 Zone 2 Zone 1 Taco Zone Control SR 503 EXP Boiler Pump Boiler Pump Injection Pump Injection Pump DHW Tank POWER Zone 3 Zone 2 Zone 1 INPUT END SWITCH ZR X X ZC Zone 3 Zone 2 Zone 1 Taco Zone Control SR 503 EXP A Expansion Switch set to Master Mode Switch set to Normal Expansion Switch set to Slave Mode Switch set to Normal PC 705 2 PC 702 1 PC 700 2 DHW Tank POWER Zone 3 Zone 2 Zone 1 INPUT END ...

Страница 8: ...on the Taco Zone Control Ensure the Mode switch on the Zone Control is set to Reset if boiler control is desired orNormalifboilerenableisdesired refertotheBoilerOperationsection Wiring the Sensors Do not apply power to these terminals as this will damage the control OutdoorSensor Connect the two wires from the Outdoor Sensor directly to the Com Out 1 and 3 terminals The Outdoor Sensor measures the...

Страница 9: ...F 27 to 107 C The MIX MAX should be set to the maximum temperature allowed in the system loop There are many factors which may limit the allowable supply water temperature in a radiant floor heating slab a few are provided below Nowhere in the concrete should the temperature be maintained above 170 F 77 C The surface temperature of a radiant floor heating slab should normally not exceed 85 F 29 C ...

Страница 10: ...mperature Press and release the Item button until the MIX TARGET elements are displayed Boiler Temperature Press and release the Item button until the BOIL element is displayed To view all control settings the Item button may be pressed and held while in the View Menu The contol will then scroll through all the adjustable items MIX Start Use the and buttons to set the desired mixing starting tempe...

Страница 11: ...by 5 F 3 C per day If the outdoor temperature is near the WWSD temperature and the rooms are cold increase the MIX Start setting Testing the Sensors A good quality test meter capable of measuring up to 5 000 kΩ 1 kΩ 1000 Ω is required to measure the sensor resistance In addition to this the actual temperature must be measured with either a good quality digital thermometer or if a thermometer is no...

Страница 12: ...aged to try to correct the interference by reorienting or relocating the receiving antenna relocating the receiver with respect to this control and or connecting the control to a different circuit from that to which the receiver is connected Do It Once Do It Right TACO INC 1160 Cranston Street Cranston RI 02920 Telephone 401 942 8000 Fax 401 942 2360 TACO Canada Ltd 6180 Ordan Drive Mississauga On...

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