Nortec NHPC manual 10-20, 2Humidifier Controls NHTC and NHTC Outdoor, Page

Models: NHPC NHTC

1 125
Download 125 pages 49.33 Kb
Page 74
Image 74
(2)Humidifier Controls (NHTC and NHTC Outdoor)

10Accepts a signal from BMS/BAS system or modulating humidistat.

11Single or dual channel signal acceptance.

12Isolated 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).

13Removable door (no special tools required) to allow user full front access of plumbing and electrical sections.

14Plumbing door interlock safety switch to allow power interruption when installing or servicing the humidifier.

15Standard of acceptance NORTEC NHTC Series.

16C-UL_US listed.

17Spec

(2)Humidifier Controls (NHTC and NHTC Outdoor)

(a)Total Controller microprocessor with the following features or functions:

1Full function user interface with touch type keypad and backlit alphanumeric graphic display with trend log.

2Real time clock indicating date and time with battery back up.

3Built-in controller with adjustable set point, proportional range, and integral for use with humidity transducers.

4Acceptance 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.

5Keypad programming to configure, monitor and control humidifier parameters on graphic backlit display

aRelative humidity set point and actual conditions in space from humidity transducer.

bRelative humidity set point and actual conditions in duct for variable air volume (VAV) applications from humidity transducer.

cRelative humidity high limit set point and actual from humidity transducer.

dSystem demand in lbs/hr (kg/hr).

eOn screen service history with date stamp.

fOn screen fault history with troubleshooting list and date stamped.

gOn screen attention indication.

hSecurity loop status open/close.

iControl Channel 1 demand %.

jControl Channel 2 demand %.

kControl mode (single or dual modulation).

lControl type (demand or rh proportional, rh proportional + integral).

10-20

Page 66 2008-10-01

Page 74
Image 74
Nortec NHPC manual 10-20, 2Humidifier Controls NHTC and NHTC Outdoor, Page