Nortec NHTC User Manual
Page 74
10-20
Page 66
2008-10-01
10 Accepts a signal from BMS/BAS system or modulating humidistat.
11 Single or dual channel signal acceptance.
12 Isolated plumbing and electrical compartment with cabinet made of 18-gauge
powder coat paint finish and 20 gauge plumbing electrical door. Modular
plumbing and electrical fully assembled and pre-wired (no field assembly
required).
13 Removable door (no special tools required) to allow user full front access of
plumbing and electrical sections.
14 Plumbing door interlock safety switch to allow power interruption when
installing or servicing the humidifier.
15 Standard of acceptance NORTEC NHTC Series.
16 C-UL_US listed.
17 Spec
(2) Humidifier Controls (NHTC and NHTC Outdoor)
(a) Total Controller microprocessor with the following features or functions:
1
Full function user interface with touch type keypad and backlit alphanumeric
graphic display with trend log.
2
Real time clock indicating date and time with battery back up.
3
Built-in controller with adjustable set point, proportional range, and integral for
use with humidity transducers.
4
Acceptance of industry standard (analogue continuous control demand
signal [0-5 VDC] [1-5] [0-10 VDC] [0-20 mA] [4-20 mA]) relative humidity
transducers.
5
Keypad programming to configure, monitor and control humidifier parameters
on graphic backlit display
a
Relative humidity set point and actual conditions in space from humidity
transducer.
b
Relative humidity set point and actual conditions in duct for variable air
volume (VAV) applications from humidity transducer.
c
Relative humidity high limit set point and actual from humidity transducer.
d
System demand in lbs/hr (kg/hr).
e
On screen service history with date stamp.
f
On screen fault history with troubleshooting list and date stamped.
g
On screen attention indication.
h
Security loop status open/close.
i
Control Channel 1 demand %.
j
Control Channel 2 demand %.
k
Control mode (single or dual modulation).
l
Control type (demand or rh proportional, rh proportional + integral).