Tekmar 153 Mixing Setpoint Control User Manual download pdf

Settings

Temperature Display — –85 to 302°F (–65 to 150°C)

Supply (1) Setpoint — –40 to 239°F (–40 to 115°C)

Throttling Range — 16 to 67°F (9 to 37°C)

Boiler Return (2) — –40 to 239°F (–40 to 115°C)

Temperature Scale — Fahrenheit/Celsius

Program settings — Ten year memory backup

Mixing Setpoint

Control 153

Floating Action

Supply (1)

Throttling

Return (2)

PRGM

Item

C -

R +

Power

- Data Brochure

Mixing Setpoint Control 153

12/08

D 153

F C

Throttling

Supply(1)

Return(2

Programming

mode indicator

Wiring Chamber;

Terminals for 24V (ac)

power supply and

control circuit

to actuating motor

Item selection and

display button

Relay operation

indicators

Item

Identiﬁers

Temperature and

Throttling range

Display

Wiring Chamber;

Terminals for

Sensor(s)

Technical speciﬁcations

Dimensions — 2-7/8" x 4-3/4" x 7/8"

(74 x 120 x 22 mm)

Gross Weight — 1 lb (450g)

Ambient — –20 to 120°F (–30 to 50°C)

< 90% RH non-condensing

Power supply — 24 V (ac) ±10%, 50/60 Hz, 3 VA

24 V DC ±10%, 0.03 A

Relay capacity — 240 V (ac), Max 10 A, 1/3hp

Sensor — 10 kΩ @ 77°F (25 ± 0.2°C),

NTC thermistor, ß = 3892

accurate with up to 500 ft.

(150m) of 18 gauge wire

Control accuracy — ± 0.5°F ( ± 0.3°C) at

70°F (21°C)

Hole for mounting screw

Sequence of Operation

• When the Mixing Setpoint Control 153 Floating Action is powered-up

the digital display will show all of the display elements. The

control will then monitor sensor Supply (1) temperature. If a Boiler Return (2) sensor is connected, pressing and releasing the

Item button will toggle the display between Supply (1) and Boiler Return (2) temperature readings.

Floating Action Operating Mode

•

If the relay Open (O) is constantly on,

the measured temperature is at least

1/2 the throttling range setting below the setpoint. The mixing valve should

be opening or fully opened because more heat is required.

•

If the relay Close (C) is constantly on,

the measured temperature is at least

1/2 the throttling range setting above the setpoint. The mixing valve should

be closing or fully closed.

•

Floating Action occurs when

the measured temperature is between these two

points (Throttling range).

Technical Data

° C or °F

indicators

Programming and

display buttons

The tekmar Mixing Setpoint Control 153 is a microprocessor-based control with a ﬂoating action output

intended to operate a mixing valve, damper, etc. through an actuating motor.

This reliable and versatile control has an adjustable throttling range and a very wide setpoint range that

makes it useable in many different applications. The control has a digital LCD window that normally

shows

the actual sensor temperature and can be used to view the setpoint and other programmed settings.

A Universal Sensor 071 is supplied with the control. The wire to the sensor may be extended for any length

up to 500 ft. (150m) by standard 18 AWG low voltage wire. When an optional return sensor is added, a

minimum boiler return temperature can be constrained. The display will indicate a sensor fault whenever

the sensor is disconnected or short circuited, or the return sensor is short circuited.

OPEN RELAY ON

Temperature

Warmer

Cooler

Time

BOTH

RELAYS OFF;

NO VALVE

MOVEMENT

Desired

Temperature

Setting

Throttling

Range

24 V (ac) Floating Action

CLOSE RELAY ON

Meets Class B:

Canadian ICES

FCC Part 15

Made in Canada

tektra 906-07

Date Code

Open

Mix

Pwr

Mix

Sup

Sen

Com

Sen

Ret

Sen

Power: 24 V ±10% 50/60 Hz 3 VA

24 V (dc) ±10% 0.03 A

Relays: 240 V (ac) 10 A 1/3 hp

H1096F

No power

1 2 3 4

Summary of Contents

Page 1 - - Data Brochure

SettingsTemperature Display — –85 to 302°F (–65 to 150°C)Supply (1) Setpoint — –40 to 239°F (–40 to 115°C)Throttling Range — 16 to 67°F (9 to 37°C)

Page 2 - Installation

2InstallationCautionImproper installation and operation of this control could result in damage to equipment and possibly even personalinjury. It is y

Page 3 - PROGRAM MODE

3Electrical connectionsSensor connections — Caution, voltage is never applied to these terminalsConnect Supply (1) Sensor 071 to terminals Sup Sen

Page 4 - Testing and Troubleshooting

Before you leave• Install the wiring cover over the wiring chamber and secure it with the screw provided. • Place the front cover on the control to

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Tekmar 153 Mixing Setpoint Control User Manual

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