Nortec NHRS, Engineering Manual

Page: 21 / 26

10-20
Page 4
2008-02-18
(vii) Float level check.
(viii) Drain pump check.
(ix) Dual signal status light indicates unit operation.
(x) Cabinet has powder coated paint finish with removable door to allow the
user full front access.
(xi) Plumbing door interlock safety switch.
(c) Factory mounted, alpha numeric, Liquid Crystal Display (LCD) provides full
operational status. Display to include a keypad for user interface and
adjustment of operational parameters including:
(i) Unit output (lbs/hr or kg/hr).
(ii) Control demand status.
(iii) Relative humidity display when using transducer input(s).
(iv) Humidity set-point adjustment when using transducer input(s).
(v) Controller configuration (Proportional band and Integral) when using
transducer input(s).
(vi) Control type configuration on/off or full modulation when demand
signal(s), or transducer input(s) are provided.
(vii) Language setting: English, French.
(viii) Fault indication using text. Code cross-reference not acceptable.
(ix) Manual capacity output adjustment range of 10-100%.
(x) Option for BACnet, LonWorks, Johnson N2 or Modbus interface for
monitoring and control from a Building Management System (BMS).
(xi) Standard of acceptance: NORTEC NHRS.
(xii)
UL Listed.
C. EXECUTION
1. EXAMINATION
(a) Examine ducts, air-handling units, and conditions for compliance with
requirements for installation tolerances and other conditions affecting
performance.
(b) Examine roughing-in for piping systems to verify actual locations of piping
connections before humidifier installation.
(c) Proceed with installation only after unsatisfactory conditions have been
corrected.
2. INSTALLATION
(a) Install humidifiers and steam dispersion panels per manufacturers’
instructions.