DriSteem Vapor-logic 4 User Manual

1BHFt%3*45&&.7BQPSMPHJD*OTUBMMBUJPOBOE0QFSBUJPO.BOVBM
mc_060508_0750
4UFQo'JFMEXJSJOH
4FOTPSQMBDFNFOU
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:
t 4J[FPGIVNJEJGJDBUJPOTZTUFNSFMBUJWFUPMPBE
t 0WFSBMMTZTUFNEZOBNJDTBTTPDJBUFEXJUI
moisture migration time lags
t "DDVSBDZPGIVNJEJTUBUTBOEIVNJEJUZ
transmitters and their location
t %SZCVMCUFNQFSBUVSFBDDVSBDZJOTQBDFPS
duct
t 7FMPDJUJFTBOEBJSGMPXQBUUFSOTJOEVDUTBOE
space environments
t &MFDUSJDBMOPJTFPSJOUFSGFSFODF

DriSteem Vapor-logic 4 Specifications

General

Brand	DriSteem
Model	Vapor-logic 4
Category	Controller
Language	English