tekmar 364 User Manuals

- User Brochure

U 364

Universal Reset Control 364

07/01

The Universal Reset Control 364 is designed to maximize the comfort and efficiency provided by a hydronic heating system. The control automatically adjusts the boiler and mixed loop water temperatures that are delivered to the heating system by using outdoor reset. Outdoor reset increases the water temperature in the heating system as the outdoor temperature becomes colder. Outdoor reset also increases the energy efficiency of the heating system by not allowing more heat into the building than the building normally loses to the outside.

Menu Item

Universal Reset Control 364

Mixing, Boiler & DHW

Mix Demand

Boiler Demand

DHW Demand

Setpoint Demand

WWSD

Min / Max

Melting

158033

The mixed water temperature can be used to supply either a space heating system or a single zone snow melting system. The 364 can intelligently integrate indirect Domestic Hot Water (DHW) and tekmar zone controls into the heating system. Standard features include boiler protection (when a boiler sensor is installed), pump exercising, and digital temperature readouts.

User Interface

Access Level(s) The tekmar Universal Reset Control 364 has four access levels which are LT D (limited), USER, INST (installer), and ADV (advanced). This brochure only covers the LT D (limited) and USER levels. Only qualified service people should make adjust- ments in the INST (installer) and ADV (advanced) access levels.

Item Field

Displays an abbreviated name of the selected item

Menu Field

Displays the current menu

Status Field

Displays the current status of the control's inputs, outputs and operation

Number Field

Displays the current value of the selected item

Mix Deman Boiler Deman DHW Deman Setpoint Deman WW Min/M Meltin

Buttons

Selects Menus, Items and adjusts settings

The tekmar Universal Reset Control 364 has a Liquid Crystal Display (LCD) and four push buttons (Menu, Item, ▲, ▼) which are used to view and adjust the settings.

All of the items displayed by the control are organized into various menus. These menus are listed on the left hand side of the display (Menu Field). To select a menu, use the Menu button. By pressing and releasing the Menu button, the display will advance to the next available menu. Once a menu is selected, there will be a group of items that can be viewed within that menu.

Open / Close

Displays when the actuator is opening or closing the valve.

Mixing Device Output Scale

Shows output of injection pump or mixing valve. Arrows show whether the output is increasing or decreasing.

Burner

Displays when the boiler relay is turned on.

Pump

Displays when the primary pump 1, boiler system pump 2 and / or mixing pump 3 is operating.

DHW Pump

Displays when the DHW pump or valve is on.

Warning

Displays when an error exists.

Item

The abbreviated name of the selected item will be displayed in the item field of the display. To view the next available item, press and release the Item button. Once you have

Lock / Unlock

Displays whether the access levels are locked or unlocked.

reached the last available item in a menu, pressing and releasing the Item button will return the display to the first item in the selected menu.

Adjust

To make an adjustment to a setting in the control, begin by selecting the appropriate menu using the Menu button. Then select the desired item using the Item button. Finally, use the ▲ and / or ▼ button to make the adjustment.

Additional information can be gained by observing the Status field of the LCD. The status field will indicate which of the control’s outputs are currently active. Most symbols

°F °

min hr

sec

°F, °C, sec, min, hr

Units of measurement.

Pointer

Displays the control operation as indicated by the text.

in the status field are only visible when the View menu is selected.

Note: Depending on the settings the installer makes in the control, certain items may not appear.

Item

Ltd

User

Current outdoor air temperature as measured by the outdoor sensor. This is the default display for the control.

Target room air temperature. “ –––” denotes no heat is required.

Measured room air temperature at the indoor sensor.

Current operating status of the snow melting system.

Current mixed supply water temperature as measured by the mixing sensor.

Current boiler supply water temperature as measured by the boiler sensor.

Current boiler return water temperature as measured by the boiler sensor.

Target DHW tank temperature. This item can only be viewed if a tekmar sensor is used to measure the DHW tank temperature.

364 View Menu

Range

-67 to 149°F (-55 to 65°C)

–––, 35 to 100°F (2 to 38°C)

-58 to 167°F (-50 to 75°C)

STRT, STOP, IDLE, EXT, 0:00 to 17:00 hr, –––, INF, WWSD, CWCO

-31 to 266°F (-35 to 130°C)

–––, OFF, 70 to 190°F (21 to 88°C)

Current DHW tank temperature as measured by the DHW tank sensor.

Note: Depending on the settings the installer makes in the control, certain items may not appear.

Item

Ltd

User

This item is the desired slab surface temperature while in the melting mode.

This item is the time that the slab is operated for once it has reached the MELTING temperature. This item can only be viewed if a Remote Start / Stop Module 039 has not been connected.

The desired room air temperature for the mixing zones. Note: There is only a ±3°F (±1°C) adjustment in the LTD access level.

The minimum temperature at the slab sensor as long as the control is not in WWSD. This item can only be adjusted if a tekmar sensor is connected.

The desired room air temperature for the boiler zones. Note: There is only a ±3°F (±1°C) adjustment in the LTD access level.

The desired DHW storage tank temperature. This item can only be adjusted if a tekmar sensor is used to measure the DHW tank temperature.

364 Adjust Menu

-31 to 266°F (-35 to 130°C)

Range

32 to 95°F (0 to 35°C)

OFF, 0:30 to 17:00 hrs, INF (Infinite)

35 to 100°F (2 to 38°C)

OFF, 35 to 120°F (2 to 49°C)

35 to 100°F (2 to 38°C)

–––, OFF, 70 to 190°F (21 to 88°C)

The system’s warm weather shut down temperature.

35 to 100°F, OF F (2 to 38°C)

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