Nortec GS Series GSP Indoor Engineer's Manual
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Nortec GS Series GSP Indoor Engineer's Manual

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GS Series
GSTC/GSP Indoor
GSTC Outdoor
Engineering Manual
1503540-C

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Summary of Contents for Nortec GS Series GSP Indoor

  • Page 1 GS Series GSTC/GSP Indoor GSTC Outdoor Engineering Manual 1503540-C...
  • Page 2 PROPRIETARY NOTICE This document and the information disclosed herein are proprietary data of WALTER MEIER LTD. Neither this document nor the information contained herein shall be reproduced used, or disclosed to others without the written authorization of WALTER MEIER LTD., except to the extent required for installation or maintenance of recipient’s equipment.

  • Page 3: Table Of Contents

    10-20 MAINTENANCE WATER CONDITIONS VS. HUMIDIFIER CLEANING REQUIREMENTS ....18 PREVENTIVE MAINTENANCE ..........19 PRE-CLEANING SEQUENCE .
  • Page 4 GAS FIRED STEAM HUMIDIFIER - GSTC ........

  • Page 5: List Of Figures

    Humidifier Tank ........

  • Page 6: List Of Tables

    Table 10-00 PRINCIPLE OF OPERATION Table 1. Technical Data ........... 2 Table 2.
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  • Page 8: Principle Of Operation

    10-00 PRINCIPLE OF OPERATION 10-00 Page 1 2008-10-01...

  • Page 9: Principle Of Operation

    1. PRINCIPLE OF OPERATION A. Combustion System (1) The combustion system is based on a fully modulating forced draft combustion air blower, a negative pressure regulated gas valve, and a 100% premix burner. On a call for humidity, the combustion air blower starts and creates a negative pressure across an orifice located at the air inlet.

  • Page 10: Figure 1. Gs Indoor Series

    Figure 1. GS Indoor Series Figure 2. GS Outdoor Series 10-00 Page 3 2008-10-01...

  • Page 11: Gstc Key Pad Figure 4. Gsp Key Pad

    Figure 3. GSTC Key Pad Figure 4. GSP Key Pad 10-00 Page 4 2008-10-01...
  • Page 12 Standard Features Steam Capacity adjustment Full size alphanumeric display and keypad Total Controller with Modbus host protocol Transducer signal acceptance Individual component diagnostic capability Keypad set-point adjustment (humidity) Display of relative humidity Low and high relative humidity alarms Adjustable drain with no call for humidity Keep warm feature Networking capability up to 10 units Pre-cleaning sequence...
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  • Page 14: Operation

    10-10 OPERATION 10-10 Page 7 2008-10-01...

  • Page 15: Water Management - Better Efficiency Than Ever

    Two magnetic floats (one is a backup) measure 5 different water levels in the humidifier for proper operation. The float chamber and board are located away from the boiling action to increase reading accuracy and reduce mineral build- up since it is not in the boiling water.

  • Page 16: Figure 2. Physical Dimensions - Gs Indoor

    14.6 GSTC 42.7 10.9 27.8 14.6 GSTC 58.3 18.7 14.4 GSTC 58.3 18.7 14.4 Figure 2. Physical Dimensions – GS Indoor Humidifier 10-10 Page 9 2008-10-01 Vent Dia Vent Dia B Type BH Type 23.6 16.1 40.8 10.2 37.1 22.4 56.8...

  • Page 17: Figure 3. Physical Dimensions - Gs Outdoor

    Figure 3. Physical Dimensions – GS Outdoor Humidifier 10-10 Page 10 2008-10-01...

  • Page 18: Safety Water Level Control Check

    140ºF (60ºC). F. Capacity Turn Down The GS humidifier is capable of full modulation of the output of each burner down to 25 lbs/hr. For example on a four-burner system, such as the GS 400, the turndown ratio is 6% of total output.

  • Page 19: Remote Fault Indication

    (3) All control electronics are integral to humidifier cabinet and do not require separate cabinet on the humidifier. B. Remote Fault Indication (1) The GS Series provides output signals of the following type: (a) Humidifier “ON” (b) Humidifier “Active” (c) Humidifier “Service”...

  • Page 20: Clearances

    5. CLEARANCES (1) The clearance dimensions shown in Figure 4 and 5 are for reference only and are the minimum requirements for maintenance of the humidifier. (2) All units have frontal cleaning port access. (3) For GS 100/200, frontal cleaning port access is required only. For GS 300/400, top access is accessible from the front without clearance on the left side.

  • Page 21: Figure 4. Gstc/Gsp Indoor Clearance

    Figure 4. GSTC/GSP Indoor Clearance Figure 5. GSTC Outdoor Clearance 10-10 Page 14 2008-10-01...

  • Page 22: Steam Installation Guidelines

    6. STEAM INSTALLATION GUIDELINES (1) The GS Series humidifier comes with a single steam outlet on all capacities. The GS 100, 200/300, 400/500/600 have respectively (1.75” (4.4 cm) O.D., 3” (7.6 cm) O.D. and 4” (10.16) O.D.). Consult option and accessories section for more details. Refer to the Steam Absorption and Distribution Manual, Form #XX-231 for design of the steam distribution system.
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  • Page 24: Maintenance

    10-20 MAINTENANCE 10-20 Page 17 2008-10-01...

  • Page 25: Water Conditions Vs. Humidifier Cleaning Requirements

    The hardness is measured in grains per gallon. It is also important to test for silica content. Silicates may cause foaming and contribute to scale buildup in the humidifier tank and float chamber.

  • Page 26: Preventive Maintenance

    This sequence is not an alternative to cleaning the humidifier, it is meant to reduce the time required to clean the tank.
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  • Page 28: Options And Accessories

    10-30 OPTIONS & ACCESSORIES 10-30 Page 21 2008-10-01...

  • Page 29: Options And Accessories Available

    1. OPTIONS AND ACCESSORIES AVAILABLE A. Nortec Modulating Humidistat with Digital Display NORTEC humidistats for GSTC or GSP Gas Steam humidifiers feature proportional + integral control with setpoint range of 10-95% RH. The humidistat connects directly to the low voltage terminal strip via 3 wires (shielded if run exceeds 10 m).

  • Page 30: Nortec On/Off Controls With Digital Display

    High Humidity Alarm Package - High limit on/off humidistat duct or wall mounted, alarm light with engraved faceplate sized to fit standard 2” x 3” recessed electrical wall box supplied by others. Stops humidifier and activates alarm light if duct or room air approaches saturation.

  • Page 31: Indoor Freeze Protection

    Internet. Up to 8 humidifiers can be connected to 1 LINKS 2 controller (1 master and 7 slaves). The controller is factory installed and is located internally to the humidifier. Simply specify at the time of order the operating protocol needed. LINKS 2 comes standard with Internet capabilities however OnLine service needs to be specified at time of order.

  • Page 32: Figure 1. Nortec Links

    252-7111 - BACnet MSTP 252-7113 – Johnson N2 252-7113 – LonWorks Features Digital Feedback for unit standby/humidifying mode. Digital feedback for service required. Digital feedback for fault indication. System demand display. Control room setpoint. Control high limit setpoint. Control room %RH. Control high limit %RH.

  • Page 33: Outdoor 120 Vac

    M. DRAIN WATER SUMP PUMP Externally mounted below humidifier. For use when no floor drain is available and water must be pumped higher than the bottom of the humidifier (special high temperature model). Rated for use with all GS models. Recommended model: W.W.

  • Page 34: Steam Distributor Figure 4. Blower Pack

    Figure 3. Steam Distributor Figure 4. Blower Pack Figure 5. Short Absorption Manifold 10-30 Page 27 2008-10-01...
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  • Page 36: Specification

    10-40 SPECIFICATION 10-40 Page 29 2008-10-01...

  • Page 37: General

    1. GENERAL A. General NORTEC GS Series Gas-Fired Humidifier[s] as indicated on drawing[s] and as indicated on schedule[s]. Complete and operable humidification system [which meets applicable building codes]. Equipment start-up and project inspection by qualified factory trained representative. B. Quality Assurance Manufacturer: For each product specified, provide components by same manufacturer throughout.

  • Page 38: Extra Materials

    Revise locations and elevations to suit field conditions and to ensure proper humidifier operation. XXXXX OR XXXXX Coordinate location and installation of humidifier in the space it serves with the electrical, mechanical, and plumbing contractors. 2. PRODUCTS A. Gas Fired Steam Humidifier - GSTC...
  • Page 39 Field piping from the gas inlet to the burners is not allowed. Humidifier to prevent “back-siphoning” using an internal air gap for supply water, to meet local plumbing codes. Drain line to include a vacuum breaker to prevent siphon drainage of the tank.
  • Page 40 Humidifier shall have a dual fill valve to feed water to the tank and float chamber, to reduce scaling and mineral build up on the magnetic floats.
  • Page 41 BACnet, LonWorks, or Johnson N2 capable to interface for monitoring and control from a Building Management System (BMS/BAS). Total Controller is Modbus native for (BMS/BAS) communication for remote monitoring and control of humidifier. Web base capable via the Internet for remote monitoring or control of humidifier.

  • Page 42: Examination

    Proceed with installation only after unsatisfactory conditions have been corrected. B. Installation Install humidifiers and steam dispersion panels per manufacturers’ instructions. Seal humidifier dispersion-tube duct penetrations with flange. Install with required clearance for service and maintenance. C. Testing System verification testing is part of the commissioning process. Verification testing shall be performed by the Contractor and witnessed and documented by the Commissioning Authority.

  • Page 43: Training

    D. Training 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.
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  • Page 45: Warranty

    F.O.B. THE COMPANY’s factory, providing the defective part(s) is returned freight prepaid by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days, whichever is longer.
  • Page 46 U.S.A. Walter Meier (Climate USA) Inc. 826 Proctor 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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