Carel humiFog UA1K0HM00, User Manual

Page: 5 / 54

6 of 55
2. Components
A humiFog system is made up of the following components:

One or two pumping stations, each containing an electrical panel and volumetric piston pump.

Microprocessor control system.

Distribution system with the atomizing nozzles; for ducts/AHUs or rooms.

Zone control panel for controlling the distribution staging in each zone or AHU.

Cabinet and frame are powder coated for corrosion resistance
2.1 Main pumping station
The main pumping station features an energy efficient combination of an advanced Inverter Duty Motor and a Variable Frequency
Drive. This combination allows for the precise control of the volume of outlet water from the positive displacement pump. The positive
displacement pump is a reliable component that is designed for long life and minimal maintenance. By adjusting the speed of the
pump, the pressure and the flow rate of the nozzles are precisely modulated according to the requirements of the application. The
station also incorporates a user friendly display, allowing the user to visually change set points, and other user-modified fields.
The main pumping station controls the water output using “Constant Pressure” principles. This type of control allows a single pumping
station to supply humidification to multiple ducts/AHUs or rooms. In this setup, the humiFog controller manages the speed of the pump
according to the “Constant Pressure” set point, increasing the speed if the pressure decreases (due to opening more zones/branches
of the circuit) and decreasing the speed if the pressure increases (due to closing one or more zones/branches of the circuit).
With this configuration, the humiFog controller can manage the humidity control and distribution directly (one zone/AHU); or the
distribution control is managed by an additional external zone controller (multiple zones/AHUs). For situations in which the demand of
the distribution system exceeds the capacity of a single pumping station, two pumping stations can be configured to operate as a
duplex system. (Duplex systems require special installation and set-up. Be sure to review carefully the sections of the manual that
pertain to duplex systems.)
No. Description
1 Electric motor
2 Piston pump
3 Electrical cabinet
4 Controller-display
5 Low
pressure hydraulics
6 Motor/pump drive assembly
7 Low pressure water inlet
8 High pressure water outlet
9 Drain water outlet-thermal valve
10 Drain water outlet-relief valve
11 Water filter
Tab. 2.a
Fig. 2.a