HWL2-0818
IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 800-465-8558 / FAX (413) 564-5815
IN CANADA: 7555 TRANMERE DRIVE, MISSISSAUGA, ONTARIO, L5S 1L4 (905) 670-5888 / FAX (905) 670-5782
MODEL HW-ECM
INSTALLATION,
OPERATION &
MAINTENANCE
MANUAL
Low Temperature
High Wall Heating/Cooling Fan Coil
Units up to 2 Ton Capacity
A. General Description ...........................................................2
B. Technical Data .................................................................3-5
General Specification ...........................................................3
Coil Data ..............................................................................4
Sound Power and Pressure Data ........................................4
Dimensional Drawings .........................................................5
C. Service and Installation ................................................6-11
Installation of High-Wall Unit ................................................6
Selecting a Location ............................................................6
Mounting Plate Dimensions .................................................7
Installing the Mounting Plate ................................................7
Drilling the Condensate Drainage Hole ...............................8
Installing the Hydronic Unit ..................................................8
Drainage Piping Works ........................................................8
Unit Maintenance and Preparation ......................................9
Opening and Closing of Lift-Up Grille Cover ........................9
Removing Front Cover Assembly ........................................9
Air Purging ...........................................................................9
Wiring Connections ..............................................................9
D. Control Specifications: Complete Control PCB -
S Type Control ............................................................10-14
Definition of Input/Output ...................................................10
Wiring Diagram Full Control PCB – S Control Type ..........11
Configuration Settings .......................................................12
Control Logics for 2-Pipe System ......................................13
With Thermoelectric Valve Configuration ...........................13
Sleep Mode ........................................................................14
Auto Fan Speed .................................................................14
LED Lights .........................................................................14
LED Display and Error Description ....................................14
E. Control Specifications: Flexible Control PCB
W Type Control ...........................................................15-16
Definition of Input/Output ...................................................15
Wiring Diagram Flexible Control PCB -
W Control Type ..................................................................16
F. Users Interface .................................................................17
Remote Control Handset ...................................................17
G. Sensor Resistance R-T Conversion Table ................18-19
H. Troubleshooting Guide ...................................................20
