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2008-12-03
4.0 PRODUCT SPECIFICATIONS
4.1 TECHNICAL DATA
MHB FLOW MHTC FLOW MHB
REFLOW
MHTC
REFLOW
Control
Humidistat Total Controller
Control MHB
Total Controller
Control supply charge 120 VAC /
60 Hz
120 VAC /
60 Hz
120 VAC /
60 Hz
120 VAC /
60 Hz
Circulation pump supply voltage --- --- 120 VAC/60 Hz
Control signals Potential
free contact
of an
external
humidistat /
thermostat
0…5 VDC
1…5 VDC
0…10 VDC
2…10 VDC
0…16 VDC
3.2…16 VDC
0..20 mA
4..20 mA
Potential
free contact
of an
external
humidistat /
thermostat
0…5 VDC
1…5 VDC
0…10 VDC
2…10 VDC
0…16 VDC
3.2…16 VDC
0..20 mA
4..20 mA
Control characteristics On/Off Control Step On/Off Control Step
Control accuracy Control accuracy depends on air conditions, control distance,
water quality and probably on the number of On/Off cycles.
Max. admissible air speed above
humidification boxes
3.8 m/s / 750 fpm (4.5 m/s / 885 fpm with 4” (100 mm) mist
eliminator, 5.5 m/s
Water supply R ¾” outside thread
Water drain
1.5" PVC (1.66" (42 mm) OD) outside diameter of tube
Admissible water supply pressure
Admissible water temperature 41-113ºF (5-45ºC)
Water quality
Tap water, Reverse Osmosis, softened or fully demineralized water.
Pressure drop Typically 0.44 IWC @ 500 fpm, 90% rh
Admissible ambient temperature (Control
unit)
34…104ºF
(1…40ºC)
34…104ºF
1…40ºC
34…104ºF
1…40ºC
34…104ºF
1…40ºC
Admissible ambient humidity (Control unit) Max. 75% rh Max. 75% rh Max. 75% rh Max. 75% rh
Degree of protection of Control unit
Degree of protection of pump, valves, etc.
Fire classification of humidification medium UL 900 Class 1
Accessories
Supply valve connection (24V)
S S S S
Drain water connection (24 V)
S S
Duct humidistat
y y y y
Room humidistat
y y y y
Duct humidity sensor
y
y
Room humidity sensor
y
y
Remote indication PCB
On/Error/Maintenance/Humidification
S S S
Options
UV water treatment
y
y
Drain valve (24VAC)
S S
Conductivity monitoring
y y
Nortec Links BMS Interface
y
y
Nortec OnLine Web Control
y y y y
S = Standard Equipment
y = Option