Lb-white Guardian with Smart Sense / Direct Connect - Spark Manuel d'utilisateur télécharger pdf (Page 6)

Basic Operation

This heater uses Smart Sense

™

technology for variable

rate heat control. L.B.White has worked with agricultural

building control manufacturers for the proper

implementation of the Smart Sense

™

variable rate heating

control logic. If you have questions on whether or not your

control incorporates the Smart Sense

™

control logic, call

L.B.White Co.

When integrated to a building controller, precise, automated

control of the environment is achieved by operating the

heater over a broad heat range from 65,000 btu to 250,000

btu. This provides better, more even temperature distribution

by allowing the heater to operate at the output necessary to

maintain temperature. This results in consistent

temperatures and reduced fuel consumption.

As shipped from the factory, the heater is wired to start

and operate at minimum heat. Connection to a building

controller capable of providing 0-10 VDC, 0-20 milliamp,

or 4-20 milliamp signal for the heater’s Smart Sense

™

gas

control valve is required for further operation. See Fig. 1

for a typical system diagram.

Sequence of Operation

a. Building controller determines that heat is required.

b. Building controller closes the heating contact,

providing power and the control signal to the

Smart

Sense

™

heater.

c. The

Smart Sense

™

heater starts at the minimum

operation position.

d. The

Smart Sense

™

control logic incorporated in the

building controller then manages the output of the

Smart Sense

™

heater as necessary to achieve and

maintain the desired room temperature.

Note: When properly set up, the

Smart Sense

™

variable

rate heater will run for long periods of time - much

longer than typically experienced with on/off

heating. This is normal and is key to achieving the

consistent air temperatures and fuel savings

associated with

Smart Sense

™

variable rate

heating.

e. If the building controller determines that heat is no

longer required, it will shut the heater off and then

will initiate the heating sequence again when heat is

required.

FANS

BUILDING CONTROLLER

0-10 VDC, 0-20 mA, or 4-20 mA

CONTROL SIGNAL TO GAS VALVE

115 VAC TO HEATER

GUARDIAN

HEATER(S) WITH

Smart Sense

™

FIG. 1

GUARDIAN WITH Smart Sense

™

ROOM SENSORS

1 2 3 4 5 6 7 8 9 10 11 ... 29 30

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Lb-white Guardian with Smart Sense / Direct Connect - Spark Manuel d'utilisateur Page 6

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