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D.  VARIABLE AIR VOLUME (VAV) CONTROL SYSTEM 

(1) 

NORTEC offers several VAV control packages where VAV or variable duct 
temperature, air flow or humidity conditions require additional control flexibility. 

2.  STANDARD FEATURES AND BENEFITS 

(1)  NORTEC NHRS humidifiers can be suited for all humidity control applications. 

Resistive heating elements satisfy controller requirements instantaneously for rapid 
control with minimum deviation. NHRS units produce pure atmospheric clean steam 
on Potable, DI, or RO  water operation. Fully variable steam output from 0 to 100% 
of capacity is achieved by electronic power control of the resistive heating elements. 
When using with deionized water(<20 micromhos) the NHRS with SSR option can 
control relative humidity to ± 1%. The unique design of the stainless steel cylinder 
ensures the  process is not affected by water fill cycles. 

A.  INTEGRAL DRAIN WATER COOLER (DWC) 

(1)  NHRS has a standard internal Drain Water Cooler to meet plumbing codes by 

tempering the drain water below 140°F (60°C) during normal operation.

 

B.  TWO-LINE ALPHANUMERIC LIQUID CRYSTAL DISPLAY (LCD) 

(1) 

The NORTEC NHRS has a two line display, which provides important operating 
data using text for system messages and numbers.  Operating status, performance 
data and defined parameters can be accessed and displayed.   Its principle 
language is English, but the NHRS can display in French,  on the user level.

 

C.  AUTOMATIC SYSTEMS TEST 

(1)  Each time a NORTEC NHRS humidifier is started, it automatically undergoes a 

self-test.  It checks the correct operation of the PC board and other components 
including the fill valve and drain pump.  The humidifier will display system faults 
with the alphanumeric display and the indicator lights.

 

D.  AUTOMATIC END OF SEASON DRAIN 

(1) 

After 3 days of no call for humidity the steam production tank will completely drain 
the cylinder and automatically restart upon a call for humidity.  Does not apply if 
keep warm feature is activated.

 

E.  AUTOMATIC DETECTION, RESPONSE, AND SYSTEM MESSAGES 

(1) 

Operation is monitored continuously by an automatic check program.  When 
unacceptable deviations from normal operation are detected (such as no water 
entering humidifier or, improper water level), the NHRS responds by taking 
appropriate action.  Corresponding system messages are displayed on the LCD.  
By identifying the specific service messages, troubleshooting is simplified and 
problems external to the unit are more easily diagnosed. For non-critical service 
messages, the NHRS continues to operate and displays a service message on the 
LCD and illuminates the yellow light.

 

F.  SIMPLE INSTALLATION 

(1)  The compact construction of the NHRS allows for a simple installation. The NHRS 

comes standard with key hole mounting locations, and is ready for field connection.

 

Summary of Contents for NHRS

Page 1: ...Manual No H 104 2008 02 18 NHRS Series RESISTIVE ELEMENT STEAM HUMIDIFIER Engineering Manual TM ...

Page 2: ...LITY NOTICE WALTER MEIER LTD does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts components equipment that are not authorized or approved by WALTER MEIER LTD COPYRIGHT NOTICE Copyright 2008 WALTER MEIER LTD All rights reserved RECORD OF REVISIONS For each revision put the revised pages in your manual and discard the supersede...

Page 3: ... INSTALLATION 3 3 ELECTRICAL 4 4 CLEARANCES 4 5 WATER REQUIREMENTS 4 6 STEAM DISTRIBUTION AND ABSORPTION 4 A IN DUCT INSTALLATION 22 B OUTSIDE DUCT INSTALLATION 26 C VERTICAL IN DUCT INSTALLATION 27 D DRAIN WATER COOLING OPTION 28 7 BLOWER PACKS BOBP RMBP 30 A BLOWER PACKS 30 B PRIMARY VOLTAGE CONNECTION 32 10 20 SPECIFICATION 1 HUMIDIFIERS 2 A GENERAL 2 B PRODUCTS 3 C EXECUTION 5 2 ACCESSORIES OP...

Page 4: ...BSORPTION DISTRIBUTION Figure 1 Display Panel 2 Figure 2 NHRS Physical Data 010 090 6 Figure 3 NHRS Physical Data 135 180 7 Figure 4 RMBP Physical Data Dimensions 8 Figure 5 Remote Mounted Blower Pack 9 LIST OF TABLES Table Page 10 10 HUMIDITY STEAM ABSORPTION DISTRIBUTION Table 1 Technical Data 5 ...

Page 5: ...2008 02 18 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 6: ...10 00 Page 1 2008 02 18 10 00 INTRODUCTION ...

Page 7: ...ting elements The middle green light is the optimum operational level for the heating elements The top yellow light is the maximum water level The float chamber distinguishes 5 different water levels between the red LED and the yellow LED The micro computer can respond to fluctuations in water level to schedule draining and filling of the cylinder without affecting the steam generating process 6 A...

Page 8: ...10 00 Page 3 2008 02 02 Figure 1 NHRS ...

Page 9: ...10 00 Page 4 2008 02 18 THIS PAGE ITENTIONALLY LEFT BLANK ...

Page 10: ...10 10 Page 1 2008 02 18 10 10 HUMIDITY STEAM ABSORPTION DISTRIBUTION ...

Page 11: ...ating humidity controllers with a set point supplied by others This allows the unit to easily interface with a Building Automation System 2 For more accuracy the set point is controlled at the humidifier and the integrated controller can accept a direct transducer signal The accuracy of the humidifier to changing conditions will be dependant on the accuracy of the signal C SIGNAL BY OTHER 1 When m...

Page 12: ...ters can be accessed and displayed Its principle language is English but the NHRS can display in French on the user level C AUTOMATIC SYSTEMS TEST 1 Each time a NORTEC NHRS humidifier is started it automatically undergoes a self test It checks the correct operation of the PC board and other components including the fill valve and drain pump The humidifier will display system faults with the alphan...

Page 13: ... maintenance of the humidifier 5 WATER REQUIREMENTS 1 The NHRS will operate properly on all potable water sources De mineralized water supplies such as Reverse Osmosis and De Ionized water will reduce maintenance intervals significantly 6 STEAM DISTRIBUTION AND ABSORPTION 1 The NHRS can be used with stainless steel distributors or SAM e manifolds for short absorption distance 2 The distance betwee...

Page 14: ...65 20 020 22 5 575 1 12 75 7 65 20 030 208 1 49 04 10 20 70 030 230 1 42 50 10 20 60 030 460 1 21 25 10 20 30 030 575 1 17 00 10 20 20 030 33 75 208 3 31 89 11 48 40 030 33 75 230 3 27 64 11 48 35 030 33 75 460 3 13 82 11 48 20 030 33 75 575 3 11 05 11 48 15 045 208 3 42 52 15 30 60 045 230 3 36 85 15 30 50 045 460 3 18 42 15 30 25 045 575 3 14 74 15 30 20 065 67 5 208 3 6379 22 98 80 065 67 5 220...

Page 15: ...10 10 Page 6 2008 02 18 Figure 2 NHRS Physical Data 010 090 ...

Page 16: ...10 10 Page 7 2008 02 18 Figure 3 NHRS Physical Data 135 180 ...

Page 17: ...10 10 Page 8 2008 02 18 Figure 4 RMBP Physical Data Dimensions ...

Page 18: ...10 20 Page 1 2008 02 18 10 20 SPECIFICATION ...

Page 19: ...personnel is required in cooperation with the Commissioning Authority Project Closeout is dependent on successful completion of all commissioning procedures documentation and issue closure Refer to Project Closeout Section 01700 for substantial completion details Refer to Section 01810 Commissioning for detailed commissioning requirements f Products specified below are to be manufactured is an ISO...

Page 20: ...fold s SAM e for mounting into AHU duct s or Remote Mounted Blower Pack s RMBP for direct space applications refer to options schedule c Includes stainless steel tank and fill through plastic base to control water stratification by filling at the bottom Top filling is not acceptable i Incoloy based resistive heating elements are used to produce steam Steam production is fully variable from 0 to 10...

Page 21: ...trol 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...

Page 22: ...d safeties Replace damaged and malfunctioning controls and equipment 3 TRAINING a Training of the Owner s operation and maintenance personnel is required in cooperation with the Commissioning Authority Provide competent factory authorized personnel to provide instruction to operation and maintenance personnel concerning the location operation and troubleshooting of the installed systems The instru...

Page 23: ...roportioning 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 no...

Page 24: ... is not sensed Turns humidifier off if air handler fails 3 252 0273 Humidistat on off control or high limit duct mounted Standard with external duct mounted humidity control Can be calibrated in the field G SSR COOLING KIT 1 253 0620 This kit is used for applications where ambient temperature exceeds 95ºF 35ºC Provides additional cooling for the Solid State Relays for exceptional conditions H KEEP...

Page 25: ...u of all other warranties expressed or implied by law No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product Any further warranty must be in writing signed by an officer of THE COMPANY 4 THE COMPANY s limited warranty on accessories not of the companies manufactu...

Page 26: ...tor Avenue Ogdensburg NY 13669 TEL 1 866 NORTEC 1 EMAIL northamerica climate waltermeier com WEBSITE www humidity com CANADA Walter Meier Climate Canada Ltd 2740 Fenton Road Ottawa ON K1T 3T7 TEL 1 866 NORTEC 1 FAX 613 822 7964 Authorized Agent ...

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