Nortec Industries NHRS Series - Manual (Page 23)

10-20
Page 6
2008-02-18
2. ACCESSORIES / OPTIONS AVAILABLE
A. NHRS UNIT CONFIGURATION OPTIONS
(1) Solid State Relay option provides the highest level of relative humidity control
available. With de-ionized water and high precision control the Solid State Relay
option is capable of maintaining ±1% relative humidity control. For ordering
information see H.E.L.P. software or contact factory.
(2) 253-0626 – NHRS Cooling Kit is used for applications with an ambient temperature
exceeding 95ºF (35ºC) to provide additional cooling of the Solid State Relays. The
NHRS Cooling Kit does not apply if Solid State Relays are not present.
(3) 253-3179 – Scale Management Option for potable water collects scale debris in a
scale collection tank below the steam cylinder. Minor maintenance of the
humidifier consists of draining the scale collection tank when the Scale
management option is ordered. This option eliminates steam cylinder removal
during minor maintenance.
B. HUMIDISTAT WITH INTEGRAL SENSOR AND CONTROLLER (up to ±3% RH
Control)
(1) 151-0142 - Modulating 0-10 Vdc wall mounted, P + I control humidistat with setpoint
range of 0-100% RH. Connects directly to the low voltage terminal strip via 3 wires
(shielded if run exceeds 10 m) and accurately controls RH in a zone or space. Can
be used with remote sensors. Time proportioning control not acceptable.
(2) 252-0266 - Modulating 0-10 Vdc duct mounted, P + I control humidistat with setpoint
range of 0-100% RH. Connects directly to the low voltage terminal strip via 3 wires
(shielded if run exceeds 10 m) and accurately controls RH in a zone or space. Can
be used as a control humidistat if placed in return air or as high limit if placed in
supply. Time proportioning control not acceptable.
C. MODULATING TRANSDUCER
(1) 1509858 – 2-10 VDC wall sensor with digital display, controlled through the
humidifier via the LCD display, the sensor can accurately read relative humidity
set-points between 0-100%. The digital display will show the current space
condition along with the magnitude of the transducer signal being sent to the
humidifier.
(2) 1509857 – 2-10 VDC duct sensor with digital display, controlled through the
humidifier via the LCD display, the sensor can accurately read relative humidity
set-points between 0-100%. The digital display will show the current space
condition along with the magnitude of the transducer signal being sent to the
humidifier.
D. STEAM DISTRIBUTORS
(1) Allows for direct introduction (injection) of steam into a duct system or Air Handling
Unit. Steam Distributor(s) are selected based upon capacity and duct width.
Atmospheric distributors are used with NHRS humidifiers. They are designed to
operate at atmospheric steam pressure. All steam distributor tubes are made of
stainless steel and are adjustable for horizontal or vertical applications.