Mammoth 5 to 40 Tons: Water-to-Water (K-Vintage) - Manual (Page 10)

10
MAMM-WSHP-IOM-1KA (September 2011)
MAMMOTH CONTROLS
HP 5 Microprocessor Control Board
The standard HP 5 microprocessor control board
provides complete control of a compressor, reversing
valve and offers numerous safety features and
troubleshooting fault indicators. The HP 5 unit is
designed to operate with Mammoth’s existing series of
wall thermostats and arrives factory-installed and wired.
Operation and maintenance (OM) instructions for the
HP 5 control board are contained in a separate
document (MAMM-WSHP-IOM-1HP5). This document
is available on the Mammoth website at
www.mammoth-inc.com under Literature.
Key Features and Benefits
 Low and high voltage protection
 Check microprocessor at startup – self-diagnostic
 Random start time delay from 5 to 35 seconds
 Compressor anti-short cycle protection for 300 seconds (5 minutes)
 Compressor and reversing valve control
 Compressor lockout with selectable intelligent/manual reset
 LED status on the board
 Lockout alarm signal to the temperature controller in the event of a safety circuit fault
 Operable on 50 and 60 cycle power
 Emergency shutdown from a field-supplied signal
 Unoccupied (night setback and night setup) mode from a field-supplied signal
 Dry contact alarm signal for connection of a fault signal to a DDC controller.
 Auxiliary dry contact for tie-in of a motorized valve when the compressor is on (or optional compressor status)
 Night heating or cooling operation from temperature controller
 Override of the unoccupied mode from the temperature controller
 Low and high pressure compressor protection
 Low pressure bypass with 0, 1, 2 and 3 minute selections