Tekmar 156 Difference Setpoint Control Manual do Utilizador descarregar pdf (Página 3)

Display

Setpoint Operation

▼

POINTER

Displays the control operation as

indicated by the text.

HEAT

HEAT RELAY

Displays when the HEAT relay is

closed.

°F

°C

°F, °C

Units of measurement

PRGM

PROGRAM MENU

Program the control settings.

The Difference Setpoint Control 156 has two control points;

heat source and storage. The heat source could be a solar

collector or wood boiler while the heat storage is typically

a storage tank. The control is looking at the temperature

difference (∆T) between the source and storage to determine

when to close the relay and start the heat transfer. The

setpoint operation that follows will explain the on and off

points of the relay.

∆T

Source Maximum

Minimum

Storage ∆T • hoursDiff’l

Item

Number Field

Displays the current value

of the selected item

Item Field

Displays the current

item selected.

Menu Field

Displays the

current menu

Buttons

Selects Menus, Items

and adjusts settings

Heat

Source

Heat

Storage

Pump

Storage

Sensor

Source

Sensor

Sequence of Operation

Symbol Description

When the Difference Setpoint Control 156 is powered up,

all segments are displayed in the LCD for 2 seconds, and

then the type number is displayed for 2 seconds. Next,

the software version is displayed for 2 seconds. Finally,

the control enters into the normal operating mode and by

default the LCD displays the current T temperature.

Powering Up the Control

Status Field

Displays the current

status of the relay.

1 2 3 4 5 6 7 8 ... 11 12

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