The Honeywell H705A1003 Solid State Enthalpy Controller maximizes the use of free outdoor air in place of the first stage of cooling in heating, ventilating and air conditioning (HVAC) economizer systems.
Features
The W7459A1001 consists of a W7459A type solid state economizer logic module and a C7400 Solid State Enthalpy Sensor on a mounting plate. The controller mounts in any position in outdoor air duct. Use the enthalpy setpoint to select desired combination of air temperature and humidity while using a second C7400A Sensor for differential changeover control to maximize savings. The W7459A1001 maximizes use of outdoor air for free cooling and is made for use in electronic and electromechanical systems.
Product Specifications
| Description |
Includes W7459 and C7400 |
| Voltage |
20-28V at 60 Hz, 20-26V at 50 Hz |
| Frequency |
60 Hz, 50 Hz |
| Contact Ratings |
1.5 A Run @ 24 Vac, 3.5 A Inrush @ 24
Vac |
| Operating Temperature Range (F) |
45 F to 95 F |
| Operating Temperature Range (C) |
7 C to 35 C |
| Operating Humidity Range (% RH) |
20 to 90% RH |
| Dimensions (in.) |
4 3/4 in. high x 6 in. wide x 2 1/2
in. deep |
| Dimensions (mm) |
120 mm high x 154 mm wide x 80 mm deep |
| Approvals, Underwriters
Laboratories Inc |
Component UL plastic rated for UL 94
V-0 |
| Comments |
SPDT - terminals 1 and 2 make with
enthalpy increase above setpoint; terminals 2 and 3 make with enthalpy decrease.
Used With Electronic or electromechanical systems. |