DriSteem Vapor-Logic Průvodce řešením problémů stáhnout pdf (Strana 30)

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Installation

Humidistat and sensor locations are critical

Humidistat and sensor location have a significant impact on

humidifier performance. In most cases, do not interchange duct

and room humidity devices. Room humidity devices are calibrated

with zero or little airflow; whereas duct humidity devices require

air passing across them.

Recommended sensor locations (see figure below):

A Ideal. Ensures the best uniform mix of dry and moist air with

stable temperature control.

B Acceptable, but room environment may affect controllability,

such as when sensor is too close to air grilles, registers, or heat

radiation from room lighting.

C Acceptable. Provides uniform mixture of dry and moist air.

If extended time lag exists between moisture generation and

sensing, extend sampling time.

D Acceptable (behind wall or partition) for sampling entire room

if sensor is near an air exhaust return outlet. Typical placement

for sampling a critical area.

E Not acceptable. These locations may not represent actual overall

conditions in the space.

F Not acceptable. Do not place sensors near windows, door

passageways, or areas of stagnant airflow.

( Best sensing location for a high-limit humidistat or humidity

transmitter and airflow proving switch.

Other factors affecting humidity control

Humidity control involves more than the

controller’s ability to control the system. Other

factors that play an important role in overall

system control are:

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moisture migration time lags

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transmitters and their location

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duct

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space environments

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DriSteem Vapor-Logic Průvodce řešením problémů Strana 30

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