Specifications

13
Introduction
After the system has been properly installed and
connected to both electrical and water supplies, it
may be started.
Start-up and checkout procedures
Mounting
Check mounting verify that the unit is level and
securely supported before filling with water.
Piping
Verify that all piping connections have been com-
pleted as recommended and that water pressure is
available.
• Standard makeup water piping
(HUMIDI-TECH)
Use cold or hot make up water. If the water
pressure is above 414 kPa and/or water hammer
would be objectionable, install a pressure-
reducing valve or shock arrester. Even though the
HUMIDI-TECH has an internal 25 mm air gap,
some local codes may require a vacuum breaker.
Important: Minimum water supply pressure
is 172 kPa.
• DI makeup water piping (HUMIDI-TECH)
In this unit the electronic probe control is replaced
by float valve control. A float switch provides
heater protection in the event of a low-water
condition and is common to all DI humidifiers. The
wiring diagram is located inside the electrical
panel cover.
START-UP AND OPERATION
Electrical
Verify that all wiring connections have been made
in accordance with all governing codes and the
enclosed HUMIDI-TECH
®
wiring diagram. The
external connections diagram will be found in the
packet with this manual.
Caution: Only qualified electrical
personnel should perform start-up
procedure.
VAPOR-LOGIC
®
3
control
VAPOR-LOGIC
3
is the standard controller for the
HUMIDI-TECH. For more information regarding the
operation of the VAPOR-LOGIC
3
microprocessor,
see the VAPOR-LOGIC
3
Installation and opera-
tions manual.
Figure 13-1: Electronic probe control for main-
taining proper water level (standard water
HUMIDI-TECH models only)
OM-211-1
Fill valve on
Fill valve off
Low water
A three-probe conductivity sensor cycles a solenoid-
operated water fill valve to maintain proper water
levels.
VM99-C-0400-M-0801.pdf 13 11/19/2009 9:51:55 AM