Important: Read and save these instructions. This guide to be left with equipment. NH Series Installation and Operation Manual Includes installation, operation maintenance and troubleshooting information for your NHTC / NHPC Electric Steam humidifier 2522381-F | 17 SEPT 2009 Thank you for choosing NORTEC. INSTALLATION DATE (MM/DD/YYYY) MODEL # SERIAL # CYLINDER # 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. All references to the NORTEC name should be taken as referring to WALTER MEIER LTD. Liability Notice NORTEC 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 NORTEC. Copyright Notice Copyright 2009, WALTER MEIER LTD. All rights reserved. Contents 1 Introduction 59 Maintenance and Servicing 2 Receiving and Unpacking 3 Humidifier Components 60 Required Maintenance 5 NHTC/PC Models 65 Extended Shutdown 6 Options and Accessories 66 Maintenance Checklist 9 Installation 67 Troubleshooting 10 Typical Humidifier Installation 69 General Troubleshooting 11 Location 72 NHTC/PC Warnings and Faults 12 Mounting with Keyholes 79 Wiring Diagrams 13 Plumbing 14 Steam Lines and Condensate Returns 19 Electrical 20 External Controls 29 Options and Accessories 31 Start Up 32 Installation Check 33 NHTC/PC User Interface 34 Start Up Procedure 35 Status Screens 36 NORTEC Digital Controls 39 Start Up Checklists 41 Operation 42 LED Status Lights 44 How the Humidifier Works 47 NHTC Humidifier Configuration 57 NHPC Humidifier Configuration 81 Spare Parts 92 Warranty Introduction CAUTION: Servicing Disconnect main power before any servicing. The plumbing and electrical compartments contain high voltage components and wiring. Access should be limited to authorized personnel only. During and following operation of the humidifier, the steam and components in contact with the steam such as the cylinder, blower pack, steam lines, steam distributors, and condensate lines can become hot and can burn if touched. Walter Meier 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. CAUTION: Electrical All electrical work should be done according to local electrical code. Electrical connection to be performed by a licensed electrician. CAUTION: Plumbing Plumbing to be performed by a licensed plumber. Drain water from humidifier can be very hot. Do not drain to public sink. All plumbing work should be done according to local plumbing code. CAUTION: Installation Do not mount on hot surfaces Do not mount in area where freezing can occur Do not mount on vibrating surface Do not mount on floor The NHTC produces steam at atmospheric pressure no devices which could block steam output should be connected to the steam outlet. Steam lines must be installed so that no restriction can produce backpressure in the humidifier. Regardless of selecting On/Off or modulating control method, NORTEC humidifiers must have a closed circuit across its On/Off security loop control terminal to operate. NORTEC highly recommends the use of a high limit humidistat and an air proving switch in series for this function. 1 | Introduction Receiving and Unpacking 1 Check packing slip to ensure ALL material has been delivered. 2 All material shortages are to be reported to NORTEC within 48 hours from receipt of goods. NORTEC assumes no responsibility for any material shortages beyond this period. 3 Inspect shipping boxes for damage and note damages on shipping waybill accordingly. 4 After unpacking, inspect equipment for damage and if damage is found, notify the shipper promptly. 5 All NORTEC products are shipped on an FOB factory basis. Any and all damage, breakage or loss claims are to be made directly to the shipping company. Before Installation 1 Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifier’s specification label. 2 Ensure that the dedicated external fuse disconnect is of sufficient size to handle the rated amps as indicated on the specification label. Refer to local codes. 3 Report any discrepancy immediately to the site engineer. 4 Ensure sufficient clearances will be available as described in Location on page 11. 5 Ensure steam lines can be routed to distributor or blower pack as described in Steam Lines and Condensate Returns on page 14. Figure 1: Specification Label Location Introduction | 2 Humidifier Components High Water Sensor Plug Condensate Return Fill Cup NOTE: NHTC 005-030 shown, component location may vary slightly for other models. Steam Outlet Driver Board Cylinder Plug Cylinder Remote Relay Board Cylinder Strap Display and Keypad Manual Drain Switch Drain Valve Door Interlock Switch On/Off Switch Drain Canal Auxiliaryl Drain Switch Fill Valve Control Terminal Strip Contactor Total Controller High Voltage Terminal Block Transformer Figure 2: NHTC Humidifier Components 3 | Introduction Description of Components Table 1: Humidifier Components Component Function of Component Auxiliary Drain Drains water from cylinder by activating drain valve without software. Condensate Return Provides a connection to return condensate to humidifier. Contactor Turns On/Off power to cylinder electrodes based on a signal from the humidifier’s controller. Control Terminal Strip Terminal strip for connecting external controls and blower pack to humidifier. Cylinder Plug Power connectors to electrodes in cylinder. Cylinder strap Securely holds cylinder in place. Cylinder Holds electrodes in water. Current between electrodes generates heat used to generate steam. Display and Keypad User interface for configuring the humidifier. Door Interlock Swtich Prevents contactor from engaging when door is removed (pull out to override this safety feature while troubleshooting). Drain Canal Combines cylinder drain water and fill cup overflow into a single drain outlet. Drain Valve Drains water from humidifier. Driver Board Provides input and output connections to humidifier components. Fill Cup Provides an air gap for backflow prevention. Fill Valve Controls flow of water into humidifier. High Voltage Terminal Block Primary power connection from remote disconnect to humidifier. High Water sensor Plug Used to detect max water level in cylinder. Manual Drain Switch Drains water from the cylinder using software control. On/Off Switch Turns power On/Off to humidifier controller. Note: Turn off humidifier disconnect to shut off primary power to the humidifier. Remote Relay Board (option) Provides a terminal strip to dry contacts which open/close to indicate the humidifier is on, humidifying, needs service, or is in a fault condition. Steam Outlet Connect to steam line with steam hose. Total Controller Controls all functions of the humidifier’s operation and provides user interface for configuration of the humidifier. Transformer Steps primary voltage down to 24 VAC for the controller and internal components such as the fill valve and drain valve. Introduction | 4 NHTC/PC Models The NHTC with its Total Controller and state-of-the-art features and options is the most advanced electrode steam humidifier available. The base model NHPC provides steady and reliable humidification using the same proven cylinder technology as the NHTC. The NHTC/PC is available in capacities ranging from 5 lb/hr (2 kg/hr) to 200 lb/hr (90 kg/hr). NHTC/PC humidifiers are packaged in three different cabinets depending on their capacity. Figure 2, NHTC/PC Models shows the configuration and relative size of the three different cabinets. Both the NHTC and NHPC models up to 100 lb/hr (45 kg/hr) are also available with a built on blower pack. Table 2 provides specifications for the NHTC/PC product line. NHTC/PC 150-200 NHTC/PC 050-100 NHTC/PC 005-030 B B Fill Connections A A Drain Connections Figure 3: NHTC/PC Models Double Unit (NHTC/PC 150-200) NHTC/PC double units have two cylinders to provide increased capacity. The construction and installation of double units is identical to units with a single cylinder with the following exceptions; In addition to having two cylinders double units also have two driver boards (designated A and B). One driver board controls each cylinder. (see Figure 3: NHTC/PC Models). Double units can operate both cylinders in parallel from a single set of control signals or independently based on two sets of control signals (see Multi Mode on page48 for configuration instructions). Independent Operation - If configured for independent operation then 2 sets of control wiring must be provided. Control wiring for each cylinder must be connected to the cylinder’s corresponding driver board/terminal strip and each cylinder performs independent of the other. Parallel Operation - If configured for parallel operation then only one set of control wiring is required and the cylinders operate in parallel. Double units have one primary power connection but have individual fill, drain, and steam outlet connections for each cylinder. 5 | Introduction Outdoor Model The outdoor model of the NHTC provides a weatherproof enclosure that allows the NHTC to be installed on rooftops in moderately cool climates. Refer to the installation addendum that is provided with the outdoor model to insure proper installation. Options and Accessories NORTEC provides a complete line of options and accessories for every humidification application. The following options and accessories are available and may have been delivered with your NHTC/PC humidifier. Refer to the installation instructions that came with the accessories for their proper installation and operation. Table 2: Options and Accessories Option / Accessory Used For Steam Distributors Adding steam into air ducts Remote Blower Pack Adding steam into a space remote from the humidifier. SAMe Steam Distribution Manifold Adding steam into air ducts where short absorption is required. Digital or Analog Control Humidistats Controlling the output of the humidifier based on sensed RH (can be mounted in the space being humidified or in the duct). Digital RH Transducers Communicating RH in a space or duct to the humidifier Digital or Analog High Limit Humidistats Preventing over humidification in a duct by shutting down or throttling down the humidifier when duct RH gets high. Air Proving Switches Insuring humidification only occurs when air is moving in a duct. Fill Cup Extension Increasing the steam back pressure capability of an NHTC/PC Drain Water Cooling Cooling drain water to less than 140 °F (60°C) Foam Detection Kits Increasing the range of water quality in which an NHTC/PC can operate. Introduction | 6 Table 3: NHTC/PC Specifications Phase Capacity lb (kg) Volts 5 (2.3) 110-120 208 220-240 277 *380 440-480 550-600 208 220-240 277 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 208 220-240 *380 440-480 550-600 10 (4.5) 1 20 (9) 20 (9) 30 (13.5) 50 (22.5) 3 75 (34) 100 (45) 150 (68) 200 (90) * Not UL Listed 7 | Introduction NHTC Part NHPC Part Amps No. No. 1509620 1509621 1509622 1509623 1509624 1509626 1509627 1509628 1509629 1509630 1509631 1509633 1509634 1509635 1509636 1509637 1509639 1509640 1509641 1509642 1509643 1509645 1509646 1509647 1509648 1509649 1509651 1509652 1509653 1509654 1509655 1509657 1509658 1509659 1509660 1509661 1509663 1509664 1509665 1509666 1509667 1509669 1509670 1509671 1509672 1509673 1509675 1509676 2521984 2521985 2521986 2521987 2521988 2521990 2521991 2521992 2522002 2522003 2522004 2522005 2522006 2522007 2522014 2522015 2522016 2522018 2522019 2522021 2522022 2522024 2522025 2522026 2522027 2522029 2522031 2522032 2522034 2522035 2522036 2522039 2522040 2522041 2522042 2522043 2522045 2522046 2522047 2522048 2522049 2522051 2522052 2522054 2522055 2522056 2522058 2522059 15.9 18.3 15.9 13.7 10.0 7.9 6.3 36.6 31.7 27.5 20.0 15.9 12.7 21.1 18.3 11.6 9.2 7.3 31.7 27.5 17.4 13.7 11.0 47.2 40.9 25.8 20.4 16.4 70.8 61.3 38.7 30.7 24.5 94.4 81.8 51.7 40.9 32.7 141.6 122.7 77.5 61.3 49.1 188.7 163.6 103.3 81.8 65.4 Max Ext Fuse KW Standard Cylinder 20 25 20 20 15 15 15 50 40 35 30 20 20 30 25 15 15 15 40 35 25 20 15 60 60 35 30 25 90 80 50 40 35 125 110 70 60 45 200 175 100 80 70 250 225 150 110 90 1.9 3.8 3.8 3.8 3.8 3.8 3.8 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 11.4 11.4 11.4 11.4 11.4 17 17 17 17 17 25.5 25.5 25.5 25.5 25.5 34 34 34 34 34 51 51 51 51 51 68 68 68 68 68 202 202 202 202 203 204 204 321 321 321 305 309 309 303 303 311 311 311 421 421 407 411 411 621 621 603 607 607 621 621 603 607 607 621 621 603 605 607 621 621 603 607 607 621 621 603 605 607 Net/Full Weight lb (kg) 60 / 89 (27 / 40.5) 95 / 156 (43 / 76) 150 / 272 (68 / 124) Introduction | 8 Installation 10 11 12 13 14 19 20 20 Control Wiring 20 Control Location 21 On/Off Control Wiring 23 Modulating Control Wiring 25 Transducer Control Wiring 26 27 28 29 9 | Installation Typical Humidifier Installation Location Mounting with Keyholes Plumbing Steam Lines and Condensate Returns Electrical External Controls Optional Outdoor Temperature Reset Remote Fault Option Wiring Multi Mode Wiring (NHTC Only) Options and Accessories 29 Built On or Remote Blower Pack 29 Fill Cup Extension 30 Drain Water Cooling 30 Foam Protection 30 Internal Fusing 30 Remote Fault Indication 30 Outdoor Model Typical Humidifier Installation Mounting Pg 12 1ft (30 cm) 2 in. (5 cm) min. Steam Distribution Pg 14 3 in. (7.5 cm) Screws 36 in. (90 cm) min. right clearance 1 ft (30 cm) min. 36 in. (90 cm) min. front clearance 24 in. (60 cm) min. 1- 24 VAC 2- On/Off Loop 3- Ctrl Ground 4- Control Signal 5- Limit Signal 6- 5 VDC 7- Ground 8- Blower Pack 9- Blower Pack On/Off Controls Controls Pg 20 Plumbing Pg 13 Dedicated Circuit Breaker or Disconnect Air Gap N H T C / P C L1 L2 L3 E X T E R N A L Ground Modulation Controls NHTC/PC EXTERNAL ½ in NPT Cold potable water 350-670 microsiemens 30-80 psig Electrical Pg 19 Figure 4: Typical Humidifier Installation Installation | 10 Location Mount on a suitable wall or vertical surface. Do not sit the on the floor to allow clearances required for plumbing and electrical connections. Clearance dimensions shown are for reference only and are the minimum required for maintenance of the humidifier. Consult local and national codes before final location and installation. NORTEC does not accept responsibility for installation code violations. Install only in areas with ambient temperature 41-104 °F (5 – 40 °C) relative humidity 5 95% (non condensing). When possible install below the steam distributor. If mounted above the steam distributor take care to provide proper steam line routing and proper condensate traps. DO NOT locate the humidifier any further then absolutely necessary from the steam distributor location as net output will be reduced as a result of heat loss through the steam line. When possible, mount the NHTC humidifier at a height convenient for servicing. Note: Do not mount on hot surfaces, where freezing can occur, vibrating surface, or floor. Blower Pack Overhead Clearance 5-95% As Close as Possible to Steam Distributor Blower Pack Front Clearance (See Table Below ) 36 in. (91.5 cm) Min. Side Clearance 36 in. (91.5 cm) Min. Front Clearance (See Table if Blowerpack Installed) Mount Humidifier Level 24 in.(61 cm) Min Height Humidifier Output lb (kg) < 10 (4.5) 20 (9) 30 (13.5) 50 (22.5) 75 (38) 100 (45) Blowerpack Overhead in. (cm) 18 (45) 36 (90) 42 (105) 48 (120) Blowerpack Front in. (cm) 30 (75) 36 (90) 72 (180) 84 (215) 144 (365) 156 (400) Figure 5: Mounting Location / Clearance 11 | Installation Mounting with Keyholes 1 The NHTC Series humidifier is wall mounted using keyholes located on the back of the unit’s cabinetry. 2 Use #12 x 3 in. (7.5 cm) screws mounted into 2x4 studs or better. 2 screws are needed for a single unit (NHTC 010 to 100). 3 screws are needed for a double unit (NHTC 150 to 200). 3 Keyholes are spaced 16 in. (40.6 cm) apart center to center for large units and 10.7 in. (27.2 cm) apart for small units. Insert screws into the studs until there is 1/4 in. of screw exposed. Be sure the screws are level to each other. 4 Raise the unit and place the screws through the keyholes. Make sure the unit is level then tighten the screws to secure the unit in place. 5 Place L Shaped brackets on top of the unit, with holes inline with the studs. Using the appropriate sized wood screw fasten the “L” brackets to the studs securing the unit from any upward motion. See Figure 6: Mounting With Keyholes. Note: Use screws longer than 3/4” (7.5 cm) if drywall or other spacer is present. B A Insert screws so that 1/4 in. (6 mm) exposed, hang unit, tighten screws. Install “L” bracket after hanging humidifier #12 x 3 in. (7.5 cm) Wood Screws Unit Size 5-30 50-100 150-200 Screws 2 2 3 Dim A in (cm) . 10.7 (27.2) 16 (40.6) 16 (40.6) Dim B in. (Cm) 16 (40.6) Figure 6: Mounting With Keyholes Installation | 12 Plumbing 1.2 in. (30 mm). OD un-threaded outlet with factory supplied bent hose and clamp. Air gap required. 2 1/2 in. to 7/8 in. copper reducer is ideal. (NORTEC option P/N 2522172) Hose must not touch the bottom of the funnel. Min. 7/8 in. OD drain line. Keep as short as possible. Slope down to floor drain or main drain. Increase size if combining multiple drains as in double unit. 1/2 in. NPT Use union to connect supply pipe to unit. Always install a water shut-off valve. *Pipe and water shut-off valve not supplied by NORTEC. Figure 7: Water Supply and Drain Connection Note: Drain Water is very hot, do not drain to public sink Supply cold potable water, 30 - 80 PSIG, 350 – 670 microsiemens Do not use plastic pipe for drain or condensate lines. All water supply and drain line connections should be installed in accordance with local plumbing codes. Supply water should at 30 to 80 PSIG and be between 350-670 Microsiemens (Hardness 10-20 GPG). Water softener may be used if conductivity remains in recommended range. Install water shut off valve and union before humidifier to facilitate servicing. The drain line should not end in a sink used frequently by personnel, or where plumbing codes prohibit it. Route to a floor drain or equivalent for safety reasons. Insure drain line is adequately sized to provide free and easy draining and that an air gap is installed as shown. A restricted drain can cause cylinder water to over concentrate and result in poor operation or result in water backing up at the air gap. 13 | Installation Steam Lines and Condensate Returns MAIN RULES FOR ATMOSPHERIC STEAM LINES Slope the steam lines. Trap condensate (Use full size ‘T’ for Traps). Steam lines must not have any restrictions which could cause back pressure. Insulate with 1.0 in. (2.5 cm) pipe insulation. Follow recommended materials, size and length see tables. Use Appropriate Slope Insulate Pipe 10 Degrees Direc Steam tion 2 in. (5 cm) 1 ft (30 cm) 2 Degrees Steam Dire Ste am D irecction tion 0.5 in. (12 mm) 1 in. (2.5 cm) pipe insulation 1ft (30 cm) Figure 8: Main Steam Line Requirements Table 4: Recommended Steam Line Material Steam Line Material Lb/hr (kg/hr) 0-3 3/4 in MED-L Tubing (7/8 in. OD) 30+ 3+ *1 in. MED-L Tubing (1 1/8 in. OD) 0-10 0-3 0.875 in. Tube x 0.049 in. thick wall 30+ 3+ *1.125 in. Tube x 0.049 inch thick wall 0-20 0-6 1 1/2 in. MED-L Tubing (1 5/8 in. OD) 20+ 6+ *2 in. MED-L Tubing (2 1/8 in. OD) 0-20 0-6 1.750 inch Tube x 0.065 inch thick wall 20+ 6+ *2.0 inch Tube x 0.065 inch thick wall 0-30 (0-13) < 10 <3 Part Number 1328810 (7/8”) 31-100 (14-45)** <10 <3 Part Number 1328820 (1 3/4”) Copper Tube 31-100 (14-45)** NORTEC Hose Steam Line Description 0-10 0-30 (0-13) Stainless Steel Tube Steam Line Length ft m 0-30 (0-13) 31-100 (14-45)** Note: * These diameters require a reducer at humidifier and steam distributor connection ** Use one steam lines per cylinder for NHTC/PC 150-200 humidifiers. Installation | 14 Table 5: Maximum Recommended Length of Steam Line NOTE: Unit Size Steam Output (Lb/hr) Distance (ft) Possible Loss (lb/hr) Steam Line Size (in) NH-005 NH-010 NH-020 NH-030 NH-050 NH-075 NH-100 NH-150 NH-200 5 10 20 30 50 75 100 150 200 8 15 20 * 25 * 40 ** 50 ** 50 ** 50 /cylinder ** 50 /cylinder ** 1.0 1.5 2.0 2.5 4.0 5.0 to 10.0 5.0 to 10.0 5.0 to 10.0 5.0 to 10.0 3/4 3/4 3/4 3/4 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 * Use one inch copper steam line for longer runs. ** Use two inch copper steam line for longer runs. 1 This table gives the maximum recommended steam run by unit size. 2 The use of steam line other then copper, stainless steel tube or NORTEC supplied steam line will void the warranty and may adversely effect the operation of the humidifier 3 The NH-150 and NH-200 are dual units. Tee is same size as steam line Use a full size tee, not a 90 degree elbow for vertical to horizontal transitions. 12 in. (30 cm) min drop to top of ‘P’ Trap P Trap min 6 in. (15 cm) or duct static pressure + 2 in whichever is greater ‘P’ Traps Use: - NORTEC 0.375 in condensate hose - 1/4 in Med-L copper tubing, or - 0.375 in stainless steel tubing Condensate drains must be sloped down. Route to humidifier fill cup if possible. Figure 9: Condensate Traps Route condensate back to humidifier fill cup if possible. Condensate will be returned to cylinder from fill cup. Condensate should not be routed to a sink used frequently by personnel. Route to a floor drain or equivalent. Condensate normally cools in traps but is still hot. A SAMe or larger steam line generates more condensate and water may not cool in the trap. A drain water cooler option may be installed if required by code. 15 | Installation Calculated absorption distance to any obstruction or 8-10 ft (2.4 - 3 m) if unknown 2 x duct height min. 2/3 Duct height 12 in. (30 cm) min. Mount distributor to side of duct Figure 10: Distributor Location in Duct Note: Refer to distributor or SAMe installation manuals for detailed installation instructions. Hose cuff with clamps 1 ft (30 cm) 2 in. (5 cm) min. 1 ft (30 cm) min. before anybend Condensate line Insulated copper steam line. Support so weight is not on cylinder. ‘P’ Trap Use steam hose between cylinder and steam line. Figure 11: Steam Distributor Above Humidifier (Copper Steam Line) Installation | 16 12 in.(30 cm) min. Radius (Typical) 1 ft (30 cm) 2 in. (5 cm) min. Condensate line ‘P’ Trap 1 ft (30 cm) min. before any bend Figure 12: Steam Distributor Above Humidifier (Hose) Min 12 in. (30 cm) radius Hose will soften over time proper support Is necessary Support Brackets Install Condensate Tee Before Distributor 1 ft (30 cm) min. Before any bend 1 ft (30 cm) min. Condensate Traps Figure 13: Steam Distributor Below Humidifier (Hose) 17 | Installation Min 12 in . (30 cm) radius Support Brackets Hose will soften over time proper support Is necessary 1ft (30 cm) min. before any bend Obstruction 2 in. (5 cm) min. 1 ft (30 cm) min. 1 ft (30 cm) Use full size condensate tee at low point. Slope lines up to “T” and immediately after it. Figure 14: Steam Distributor Below Humidifier and Obstruction (Hose) Method for Longer Runs With Limited Vertical Space Install condensate tee before distributor 1 ft (30 cm) min before turn Condensate tee every 15-20 ft (4.5 - 6 m) Condensate tee at low points 1 ft (30 cm) min. Individually trap multiple condensate returns before joining on common line. To Drain Figure 15: Long Steam Run Installation | 18 Electrical Caution: Wiring to be performed by a licensed Electrician. Three Phase NHTC/PC Three Phase Supply Ground Ground L1 L2 L3 Neutral L1 L2 L3 I N T E X T Dedicated Circuit Breaker or Fused Disconect Single Phase NHTC/PC Single Phase Supply Ground Ground L1 L2 Note: 1 Optional internal fuses are not a substitute for external fuses. 2 Dedicated external fused disconnect must be installed. Fusing must not exceed max circuit protection as indicated on the specification label. 3 Ensure that adequate power is available to carry full humidifier amp draw as indicated on the specification label. 4 All wiring to be in accordance with national and local electrical codes. L1 L2 E X T I N T Three Phase Supply Ground Ground L1 L2 L3 Neutral L1 L2 E X T I N T Three Phase Supply Ground Ground L1 L2 L3 Neutral L1 Neutral E X T Figure 16: Primary Power Connection 19 | Installation I N T External Controls Control Wiring Controls are available from NORTEC as accessories. If controls were not ordered with humidifier they must be supplied by others. The following information is relevant to all controls, factory supplied or otherwise. For wiring use minimum of 18 AWG and keep as short as possible. The NHTC humidifier can be operated with two modulating inputs. The NHPC has one modulating input which can be used for a duct high limit or humidity control. Both the NHTC and NHPC can be operated as On/Off. See Control Setting on page 52 for configuration. Caution: Failure to wire the humidifier in accordance with the wiring instructions could cause permanent damage. Such errors will void the warranty. Control Location 10 ft min 1 Air Proving Switch 3 2 Duct High Limit Humidity Control (Return Air Duct or in Room) Figure 17: Control Location 1 2 3 Air Proving Switch Locate so that it can sense air flow or lack of it. Duct High Limit NHTC can be modulating, On/Off, or a humidity sensor. NHPC can be modulating or On/Off. Locate at least 10 feet from steam distributor or far enough that under normal conditions steam is fully absorbed. Humidity Control NHTC can be Modulating, On/Off, or a Humidity Sensor. NHPC can be modulating or On/Off. Can be located either in return air duct (preferred) or in room being humidified. Mount in area representative of room humidity (draft, doorways, sunlight, or overhang such as a shelf can affect reading). Avoid placing near discharge diffuser of humidified air. Note: Regardless of selecting on/off or modulating control method, NORTEC humidifiers must have a closed circuit across its on/off security loop control terminal to operate. NORTEC highly recommends the use of a high limit humidistat and an air proving switch in series for this function. Installation | 20 On/Off Control Wiring Air Proving Switch Duct High Limit 2520259 - Digital On/Off Humidistat Note: 1 Humidifier will run when circuit between terminal 1 and 2 on humidifier is closed. 2 Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring. 3 Digital Humidistat requires 24 VAC power from terminals 1 and 3 of humidifier. 4 2520273 - Digital On/Off Duct Humidistat can also be used for duct high limit. Wire in series to 3 - Common and 4 - Digital Out of the humidistat. Humidifier Terminal Strip Figure 18: On/Off Controls 1234- N/C Com 8 - Temperature 2520259 - Digital On/Off Humidistat Ground 24 VAC Common Digital Out Duct High Limit Wire to make on drop in humidity N/O Com Air Proving Switch Wire to make when sensing air flow C o n n e ct 2 4 VAC , te rm in a l 1 o f N H TC /PC to te rm in a l 2 o f co n tro lle rs 123456789E X T Figure 19: Digital On/Off Humidistat 21 | Installation 24 VAC On/Off Loop Ground Control Signal Limit Signal (NHTC only) 5 VDC Ground Blower Pack Blower Pack N N H Or H T P C C 2520273 - Digital On/Off Duct Humidistat Package Digital On/Off Humidistat 1 - Ground 2 - 24 VAC 3 - Analog Out Duct Sensor 7 - Analog In Duct High Limit Wire remote sensor to digital display as shown below, wire digital display to humidifier as shown above. 1 - Ground 2 - 24 VAC Air Proving Switch Figure 20: Duct Sensor Wiring Installation | 22 Modulating Control Wiring Air Proving Switch High Limit Humidistat Control Humidistat Note: 1 Install On/Off controls or jumper between terminal 1 and 2 of humidifier in order to run. 2 Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring. 3 High Limit Humidistat must be duct mounted. It can be On/Off or modulating. 4 Control Humidistat can be mounted in space or in return air duct and can be On/Off or modulating. 5 The NHPC can only accept one modulating signal. Humidifier Terminal Strip Figure 21: Modulating Controls 8 - Temperature 6 - Analog Out 1 - Ground 2 - 24 VAC 1510142 - Digital Wall Humidistat 6 - Analog Out 7 - Analog In 8 - Temperature 1 - Ground 2 - 24 VAC 2520266 - Digital Duct Humidistat Package Insert On/Off controls or jumper between 1 and 2 Analog Out - 3 24 VAC - 2 Ground - 1 Connect 24 VAC, terminal 1 of NHTC/PC to terminal 2 of controllers. Figure 22: Digital Modulating Humidistats 23 | Installation E x t e r n a l 1- 24 VAC 2 - On/Off Loop 3 - Ground 4 - Control Signal 5 - Limit Signal (NHTC only) 6 - 5 VDC 7 - Ground 8 - Blower Pack 9 - Blower Pack N N H Or H T P C C Wire wall sensor to digital display as shown below, wire digital display to humidifier as shown for 1510142 - Digital Wall Humidistat. 6 - Analog Out 1509858 - Wall Sensor 1 - Ground 2 - 24 VAC 2520261 - Digital Wall W/O Sensor 7 - Analog In Duct High Limit 1 - Ground 2 - 24 VAC Air Proving Switch 2520261 - Digital Wall W/O Sensor + 1509858 - Wall Sensor Figure 23: Digital Wall Humidistant – Remote Wall Sensor Installation | 24 Transducer Control Wiring (NHTC Only) Air Proving Switch Duct High Limit 1509857 - 2-10V Duct Humidity Transducer Humidity Control 1509858 - 2-10V Wall Humidity Transducer Note: 1 Install On/Off controls or jumper between terminal 1 and 2 of humidifier . 2 Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring. 3 Duct High limit can be duct humidity transducer as shown or duct On/Off humidistat. 4 Humidity Control can be wall humidity transducer as shown, duct humidity transducer, or On/Off humidistat. Humidifier Terminal Strip Figure 24: Transducers 6 - Analog Out 1509858 - 2-10V Wall Humidity Transducer 1 - Ground 2 - 24 VAC 1 - Ground 2 - 24 VAC 3 - Analog Out 1509857 - 2-10V Duct Humidity Transducer Insert On/Off controls or jumper between 1 and 2 C o n n e ct 2 4 VAC , te rm in a l 1 o f N H TC to te rm in a l 2 o f co n tro lle rs Figure 25: Digital Transducers 25 | Installation E x t e r n a l 123456789No Hn T l Cy 24 VAC On/Off Loop Ground Control Signal Limit Signal 5 VDC Ground Blower Pack Blower Pack Optional Outdoor Temperature Reset Figure 26: Outdoor Temperature Reset 6 - Analog Out Any NORTEC Digital Controller (Not Transducer) 1 - Ground 2 - 24 VAC 2520263 - Outdoor Temperature Sensor 1 - 24 VAC 2 - Temperature Each digital controller is equipped with an integrated reset function that can reduce the setpoint during cold weather operation. This will prevent condensation on windows and building structures. The above graph illustrates how the setpoint reset feature operates. This feature is enabled by removing the jumper from terminals 8 and 1 on the humidistat and wiring the outdoor temperature sensor to these terminals. When the outdoor temperature setback feature is in effect, the humidistat will normally display the calculated setpoint limit based on the outdoor air temperature. A snowflake will also be displayed to indicate cold weather operation. When any key on the controller is pressed, the LCD screen will display the customer specified setpoint for a short duration. Insert On/Off controls or jumper between 1 and 2 Note: 1 The Temperature sensor is intended for duct mounting. 2 Locate the temperature sensor near the fresh air intake. This will ensure accurate representation of the outdoor air temperature. Connect 24 VAC, terminal 1 of NHTC/PC to terminal 2 of controllers. E x t e r n a l 123456789- 24 VAC On/Off Loop Ground Control Signal Limit Signal (NHTC only) 5 VDC Ground Blower Pack Blower Pack N N H Or H T P C C Figure 27: Outdoor Temperature Sensor Installation | 26 Remote Fault Option Wiring The NHTC (not NHPC) remote fault option includes 4 relays that can provide remote status indication. The relays are mounted to a remote fault board which is located as shown in Figure 28: Remote Fault Wiring. The PCB with the relays includes markings which indicate the function of each terminal on the board. The relays indicate the following status; 1 Unit On – The normally open relay is closed when the humidifier has power and the On/Off switch is set to on. 2 Steam – The normally open relay is closed when the control board detects that the cylinder is drawing current and steam is being produced. 3 Service – The relay can be wired to open (NC) or close (NO) when a warning is displayed on the humidifier display and the yellow service LED is illuminated. 4 Error – The relay can be wired to open (NC) or close (NO) when a fault is detected by the humidifier controls. Location on NHTC 005-030 NO COM NO COM NC NO COM NC NO COM Location on NHTC 050-200 Figure 28: Remote Fault Wiring 27 | Installation Unit ON Steam Service Error Multi Mode Wiring (NHTC Only) Connect up to 16 units (equivalent of 1600 lb/hr) using 18-24 AWG multi-strand, twisted pair, shielded cable. Connect humidistats/transducers and On/Off safety loop to master unit only. When connecting double units connect only to driver board A. See Multi Mode on page 48 and Multi Unit Op. Range on page 54for software configuration. Daisy Chain up to 16 Humidifiers Master Slave 1 Slave X Install Jumper on JP1 on last humidifier Daisy chain pole 2 and 3 of terminal J2 of the driver board. Note: Do not reverse polarity. Do not connect to pole 1 or 4. Figure 29: Multi Mode Wiring Installation | 28 Options and Accessories Note: For installation of options and accessories follow the instructions that are provided with them. Built On or Remote Blower Pack Built on and remote blower packs are available for the NHTC/PC for applications where steam for humidification must be introduced directly into the space being humidified. For instructions on installing the remote blower pack refer to the installation instructions supplied with it. The steam line and condensate return instructions provided in this manual are also applicable to remote mounted blower packs. Blower Pack Steam Line Condensate Drain “P” Trap Figure 30: Remote Mounted Blower Pack Installation of an NHTC/PC with a built on blower pack is identical to installation of an NHTC/PC without a blower pack. The steam line, condensate return and wiring connections to the blower pack have been done at the factory. Fill Cup Extension For installations where duct static pressure exceeds 6 inches a fill cup extension kit is required. The provides a bracket and hoses for mounting the fill cup above the humidifier. The fill cup extension kit may be required if water runs to drain while the humidifier is filling. See chapter on troubleshooting for more information on diagnosing fill problems. 29 | Installation Drain Water Cooling For installations where drain water must be cooler than 140ºF (60ºC) a kit is available which consists of a double fill valve. The second fill valve adds additional water to the fill cup while the humidifier is draining to cool the water more than the single fill valve. Drain Water Cooling (External) Pneumatic and electric drain water coolers are available from Nortec for installation outside the humidifier or on condensate drains from steam traps, distributors, and SAMe headers. If condensate cannot be routed back to the humidifier tank via the humidifier’s fill cup then an external drain water cooler may be required to meet regulations restricting the temperature of hot water that can be fed to drain. The external drain water cooler is only available for field installation. Foam Protection NORTEC’s NHTC/PC includes software detection of foaming which in most cases should be sufficient to address waters which can cause foaming. For more severe cases an optional foam prevention kit is available. The kit consists of an external float chamber, steam outlet , hose and fittings required for installation. The kit can be factory or field installed. Internal Fusing An optional internal fusing kit is available for all models of NHTC/PC. The kit provides extra internal protection to the humidifier and must always be used in conjunction with an external fused disconnect. The Internal fusing option is only available as a factory installed option. Remote Fault Indication An optional remote fault kit is available that can provide remote indication of humidifier status. The kit can be factory or field installed. See also Remote Fault Option Wiring on page 27 for more information about the remote fault indication kit. Outdoor Model The outdoor model of the NHTC performs in the same way as the indoor model except as noted in the manual addendum that is supplied with it. Refer to additional installation instructions for the outdoor model in the addendum. Installation | 30 Start Up 32 Installation Check 33 NHTC/PC User Interface 33 Manual Drain Switch 33 Door Interlock Switch 34 35 36 38 38 38 39 40 31 | Start Up Start Up Procedure Status Screens NORTEC Digital Controls Multi Mode NORTEC LINKS 2 NORTEC ONLINE NHTC/PC Pre-Start Up Checklist NHTC/PC Start Up Checklist Installation Check Before turning on power to the NHTC, inspect the installation to insure that it was carried out correctly. Refer to Figure 31: Installation Check, to the NHTC/PC Pre-Start Up Checklist on page 39, and to the chapter on Installation that starts on page 9. Min 10 ft (3 m) 2 x duct height from fan or transition Calculated absorption distance to any obstruction or 8 - 10 ft (2.4 - 3 m) if unknown. On/Off Controls (Air Proving) in series between terminal 1 and 2 - Adequate slope - No restrictions - No kinks (hose) - Condensate traps on long runs Fused Disconnect Correct voltage / amps / phase per spec label. Mounting - Unit level - Screws into structural member - L Bracket on top Spec label P Trap with 12 in . (30 cm) min. drop . Air gap High Limit - Wired to terminal 5 - On/Off in series between terminal 1 and 2 Control - Wired to terminal 4. - On/Off in series between terminal 1 and 2. - In return duct or location which represents humidified space (no drafts, not by door, not by diffuser). 1/2 in line min 30-80 PSI Not plastic drain, Not to sink. Figure 31: Installation Check Start Up | 32 NHTC/PC User Interface LCD Display and Input Buttons (Buttons used to navigate status screens and configure the humidifier, correspond to icons on the display) Status LEDs Software Drain Button (Initiates a software controlled drain) Door Interlock Switch (prevents contactor from engaging when door is open NOTE: Pull out with door off to override. On/Off Switch (Turns humidifier On/Off) Manual Drain Switch (Can be used to drain cylinder without software) Figure 32: NHTC/PC User Interface Manual Drain Switch In addition to software controlled draining of the cylinder the NHTC/PC has a manual drain switch which can be used to drain the cylinder even if software is not functioning. To drain the cylinder put the switch into the drain position. For normal operation the switch should be in the off position. Door Interlock Switch The door interlock switch cuts power to the contactor when the door is removed. It is an additional safety device intended to prevent the possibility of service technicians coming into contact with live electrical wiring while working on the humidifier. Pull the switch out with door off to override. Caution: Power to the humidifier should always be turned off using the dedicated external disconnect before removing the door or side panel, or before doing any service work on the humidifier. 33 | Start Up Start Up Procedure 1 Examine the humidifier and installation for damage and or improper installation. Warning: Damaged units or improperly installed units must not be operated. Damaged or improperly installed units may present a danger to persons and property. 2 3 4 5 Ensure that the door is in place and secured with its retaining screw. Open the supply water shut off valve. Turn on the mains power using the installed disconnect. Turn the On/Off switch on the front of the humidifier to On. Request – xx% Idle 0 lb/hr 04/30/09 14:25:22 Security loop: Closed Menu The LCD display will illuminate and the humidifier will perform a self-diagnostic sequence during which the LED’s and internal components will be momentarily activated. If an error is detected during the self-diagnostic sequence a Fault will be displayed. See troubleshooting section for information on diagnosing and correcting faults. After the system test the humidifier is in normal operation mode. Note: NHTC display shown. The information on the LCD depends on the configuration of the NHTC/PC and the actual operating conditions. It may vary from the display shown. 6 If On/Off or a control humidistats have been installed check and adjust the control setpoint on the control and high limit humidistat (see NORTEC Digital Controls on page 36). If transducer controls have been installed then adjust the humidity setpoint using the keypad and display (see Set P on page 53) 7 When either the external humidistat or internal controller generate a demand for humidity higher than 20% and the security loop is closed the main contactor will engage, the fill valve will activate (after a delay) and the cylinder will slowly fill with water. Note: While the cylinder is filling with water there should be no water flowing down the drain. If water is flowing down the drain it can indicate excessive backpressure or a leaking drain valve. See General Troubleshooting on page 69. 8 It can take 15 – 20 minutes or longer for a large humidifier to fill, for the water to be heated up by the submerged electrodes and for steam to be produced. Request – 100% NHPC 30 Humidifying 30 lb/hr 04/30/09 14:30:29 Security loop: Closed Menu Status Humidifying Menu NHTC Display NHPC Display The green humidifying LED on the front of the humidifier will light up and the display will indicated “Humidifying” and the amount of steam being produced (NHTC only) as soon as the electrodes are submerged and drawing current. Note: If operated on low conductivity water it may take several hours for the NHTC/PC to reach full output capacity. This is normal. During this time the humidifier will periodically indicate high water level, not perform any drains and will concentrate the cylinder water. Start Up | 34 Status Screens In addition to the main status screen the NHTC/PC includes several status screens which provide additional information about the humidifier. The additional screens can be reached by pressing the buttons corresponding to the left and right arrow key on the LCD display. Note:: NHTC status screens are shown below. The NHPC has similar status screens but with less detailed information. NHPC screens show only software version, output, demand, capacity limit, and control type. The NHPC does not have a trend graph. Request – xx% Idle 04/30/09 Security loop: 0 lb/hr 14:25:22 Closed Main Status Screen This screen reports the current request for humidity, status, output, date and time, and security loop status. If status is not idle or humidifying the left arrow key becomes a “?”. If the button corresponding to the arrow key is pressed the display will give additional information on the status of the humidifier. Menu CONTROL Output Man Cap. Ch1 Dem Ch2 Dem : 0 lb/hr : 100% : 55% : 100% Menu CONTROL Output Man Cap. RH Ch1 CNT Set-Pt RH Ch2 CNT Set-Pt : 0 lb/hr : 100% : 55% : 50% : 100% : 70% Menu Control Information Screen Output is the lb/hr steam output of the unit. Man Cap is the user configured capacity limitation. Depending on the control configuration the screen also reports the current inputs of channel 1 and 2. If the unit is configured for internal control it also provides the current humidity and setpoints. Caution: Improper control configuration can result in over humidifying which can result in damage to property. See Advanced Control Configuration if the controls displayed in the control information screen do not match those connected to the humidifier. HUMIDIFIER Model Capacity REG Mode Software : NHTC : 30 lb/hr : Demand : XVXX Menu CYLINDER Cyl Number Cyl Type Capacity Fac. Date Run Time Status Menu 35 | Start Up HUMIDIFIER Model Capacity REG Mode Software : NHTC : 30 lb/hr : RH (PI) : XVXX Humidifier Information Screen Model is the humidifier model type. Capacity is the maximum output. REG Mode is the configured control method. Software is the installed software version. Menu : 421 : Disposable : 30 lb/hr : 10/10/06 : 657h : Good Cylinder Information Cyl number is the model number of the cylinder. Cyl Type identifies it is a disposable cylinder. Capacity shows the cylinders maximum capacity. Fac. Date is the date the cylinder was manufactured. Run Time is the cylinders operational hours. Status indicates if the cylinder is good or spent. Replace if spent! Functionality Idle Mode 3DD Force Ground Fl Rapid Modu Short Cyc Foam Mode : Idle Only : Off : Off : Off : Off : Off Functionality Information Indicates the configuration of user configurable settings. For definitions see Controls Configuration. Menu 100% 0% -4 hrs 0 hrs Trend Graph This graph provides a history of the humidifiers output for the past 4 hours. It displays a percentage of full output which corresponds to the demand signal. The current demand signal is displayed at the bottom of the screen. Demand: 45% Menu NORTEC Digital Controls NORTEC provides optional On/Off, Modulating Control, or Transducer digital controls. Figure 31 and 32 show the function and meaning of the Digital Control’s display and buttons. All controls are available either wall mounted or with a remote sensor for duct mounting. Humidity (RH %) Indicates the humidistat is on. A half moon indicates it is off. Snowflake indicates the setpoint is being overridden by outdoor temperature. Power button turns off the humidiistat if pressed for 2 seconds Output signal is shown on modulating controller proportional to the demand. State of On/Off humidistat Setpoint (RH%) Option button accesses sensor calibration. See troubleshooting Increase / Decrease Setpoint Figure 33: Modulating and On/Off Digital Control Operation Start Up | 36 Modulating Control The modulating controls use a PI control algorithm to transmit a 0-10V control signal to the humidifier. Adjust the setpoint to the desired setting by using the up/down arrow buttons on the controller. On/Off Control The On/Off controls use a PI control algorithm to open and close a relay that opens and closes the humidifier’s On/Off loop. Adjust the setpoint to the desired setting by using the up/down arrow buttons on the controller. Transducer Control The transducer controls transmit a 2-10V control signal proportional to the sensed relative humidity to the humidifier. Humidity setpoint is not set at the transducer. The setpoint is set on the NHTC/PC’s display and keypad. Note: It is possible to field calibrate NORTEC Digital controls if the displayed humidity is found to be different than a known trusted source. See Digital Humidistat on page 71 of chapter on Troubleshooting. Humidity (RH %) Option button accesses sensor calibration. See troubleshooting Adjust calibration while in calibration mode Power button will display “NO” if an attempt is made to turn off the transducer. Figure 34: Transducer Control Operation 37 | Start Up Multi Mode (NHTC Only) Start up of each humidifier configured and installed for multi mode operation is the same as starting up standalone humidifiers with the exception that for the humidifier to fill and produce steam the demand to the master unit must be greater than the Multi Unit Op. Range setting of the unit being started. (Example for a slave unit configured to operate between 20 and 30% the demand to the master must be greater than 22%) Each unit connected in a multi mode system will display its demand as a percentage of the range for which it is configured. Example, a slave unit configured to operate between 20 and 30% demand will display a demand of 50% when demand to the master is 25%. Note: See Multi Unit Op. Range on page 54 for software configuration, and Multi Mode Wiring on page 28 for wiring of humidifiers in a multi mode system. NORTEC LINKS 2 (NHTC Only) NORTEC LINKS 2 is an option that can be integrated with the NHTC. It allows a Building Management System to monitor and / or control the humidifier. For complete information about NORTEC LINKS 2 and its operation and configuration, go to www.humidity.com and look up the NORTEC LINKS 2 manual. NORTEC ONLINE (NHTC Only) NORTEC ONLINE is an option that can be integrated with the NHTC. It allows a user to log onto the Internet, go to www.norteconline.com and log in to allow them to monitor their unit from any computer with an internet connection. It can also be configured to send service reminders and fault warnings when they occur. Start Up | 38 NHTC/PC Pre-Start Up Checklist Unit Serial #: _________________ Tag: _______________ Unit type: _______ __________ Voltage: ________V/_____ph Steam output: ______lb/hr Cylinder type: Customer/Job: Address: Water Quality: Well water City water Softened water Humidifier Mounting: (Clearances around the unit Acceptable Obstruction) Level Front/Side Clearance Steam Line(s): Slope up (min 2 in/ft). Diameter / Size Low point condensate traps Type of Insulation Slope down (min 0.500 in/ft) Material No Hose Kinks / Restrictions Condensate Line(s): P Trap min 6 in or duct press + 2in P Trap min 12 in drop Water Line: 1/2 in to within 4ft of unit Water pressure: 30-80 psig Drain Line: Air gap within 3 ft of the unit Diameter / Size Cylinder: Seated in drain valve and secured yes no Wiring: Wiring connections and connectors secured yes no Controls: Control Location High Limit Location Power: Voltage, amp, fuse per Spec Label: Disconnect switch located close to humidifier Panel Number Inspected by: Company: 39 | Start Up Control to Terminal 4 High Limit to terminal 5 yes yes no no Date of inspection: ______/_______/______ NHTC/PC Start Up Checklist Unit Serial #: _________________ Tag: _______________ Unit type: _______ __________ Voltage: ______V/____ph Cylinder Type: Customer/Job: Preliminary: Pre-start-up checklist completed? Steam output: ______ lb/hr Address: yes no If no, perform Pre-Start-up Checklist before starting humidifier. Start-Up Procedure: The prerequisites for the humidifier filling and contactor pulling in to make steam are as follows: Door in Place and secured with screw Water supply valve opened Mains disconnect switched on Turn On/Off switch on On/Off Security loop (Terminal 1 and 2) closed. Controls: Installed Controls Match Configuration Control Setpoint: Demand (Modulating Humidistat) or Sensed RH < Setpoint (Transducer) yes yes yes yes yes no no no no no yes no High Limit Setpoint: yes no yes no The Humidifier will undergo a self-test when the power is turned on activating the LED’s and other internal components. If the above listed prerequisites are fulfilled the humidifier will start filling the cylinder and begin normal operation. Note: Most water does not contain enough conductivity for full boil on initial start-up. Units will need to concentrate the water over a time period (hours to days). It is normal for W12 Sensor on warning indicating water level is at the top of the cylinder to be displayed during this time period. Remarks: Started by: Date of Start Up: _______/_______/______ Company: Start Up | 40 Operation 42 42 3 4 44 LED Status Lights Common Warnings Humidifier Components Description of Components How the Humidifier Works 44 Steam Generation 44 Drains 44 Steam Distribution 45 Selecting an RH Setpoint 47 NHTC Humidifier Configuration 47 Navigating the NHTC Software 47 Main Menu (NHTC Password) 48 Service Level 48 User Defined Settings 52 Control Setting 53 Setting 54 Multi Unit Op. Range 55 Diagnostic Menu 57 NHPC Humidifier Configuration 41 | Operation 57 Navigating the NHPC 57 Main Menu (NHPC Password) LED Status Lights The keypad and display panel includes 3 LED’s which provide information about the humidifier’s current status. Fault LED On Indicates the controller has detected a fault condition and stopped humidifier. Check display for fault information. Service LED On Indicates that service may be required or that the water level is high. Check display for warning information. Service LED Blinking Indicates drain button has been pushed and unit is draining. ON LED On Indicates steam is being produced. ON LED Blinking Indicates demand with safety loop open. Figure 35: LED Status Lights Common Warnings The following two warnings are common during normal operation and do not normally indicate that service is required. For a new cylinder the Sensor On warning indicates that full capacity cannot be reached because cylinder water is not concentrated. For an old cylinder the Sensor On warning may be an indication that the cylinder will soon have to be replaced. W12: Sensor On The above warning is normal during the start and end of a cylinder’s life. It indicates that the high water sensor has interrupted filling of the cylinder. It is displayed for information only and unless it persists for an extended period of time it does not require any action. W11: Safety Loop Open The above warning is normal during operation. It indicates that an On/Off humidistat or one of the security loop devices connected between control terminal 1 and 2 is open. It is displayed for information only and does not require any action. Operation | 42 Humidifier Schematic Steam Line Steam Distributor Condensate Return Fill Cup Control Board Cylinder Overflow Current Sensor High Water Sensor Electrodes Fill Valve Drain Valve Internal Air Gap External Air Gap Air Gap Figure 36: Humidifier Schematic 43 | Operation How the Humidifier Works The NHTC/PC is an atmospheric steam generator that uses heat generated by electrical current flowing between submerged electrodes to generate heat and steam. The NHTC/PC is designed for air humidification via steam distributor, blower pack, or steam manifold (SAM-e). Steam Generation Once the unit receives a demand signal, the door interlock switch is closed, and the safety loop between terminal 1 and 2 is closed the humidifier closes the contactor and measures the current. If the demand is lower than the actual output the inlet valve is kept closed and output is reduced by letting the water level in the cylinder decrease by evaporation. If demand is higher than the actual output after a brief delay the fill valve is activated and water flows into the fill cup. Water from the fill cup flows into the bottom of the cylinder through a hose connected to the drain valve housing. Note: The cylinder is gravity fed from the fill cup. If backpressure from the steam line is too high it will cause water to back up in the fill cup and flow down the overflow line to the drain. ·As soon as the water in the cylinder comes in contact with the energized electrodes current flows through the water. The resistance of the water to the electrical current heats the water and turns it to steam. The more electrode is covered by water the higher is the current and output. The unit continues to fill until the current matches demand or the high water sensor detects a high water level. The NHTC/PC repeats the fill and boil down cycle repeatedly to match output to demand. Over time minerals in the water will adhere to the cylinder’s electrodes. The humidifier will automatically fill to a higher water level to maintain full capacity during the life of the cylinder. Eventually because of scale formation it will no longer be possible for the humidifier to reach its full capacity. The NHTC/PC’s software monitors this condition and will display a warning when the cylinder needs to be replaced. Drains As steam is produced minerals are left behind increasing the conductivity of the water. The NHTC/PC’s patented auto adaptive cycle will monitor the water conductivity and perform drains to maintain the water at optimal conductivity for peak performance. The auto adaptive cycle provides the longest cylinder life in combination with keeping the tightest control and most efficient use of water during the entire cylinder life. Steam Distribution Steam generated by the humidifier may be introduced into the air in several different ways. The most common method for adding the steam into the air is to mount a steam distributor tube in a supply air duct as shown in Figure 36: Humidifier Schematic. For larger ducts or larger loads it is also common to use a steam manifold with a single steam line connection and multiple tubes for distributing the steam, see Figure 37: SAM-e Manifold. For introducing steam directly into a room, humidifier mounted or remote mounted blower packs are used see Figure 38: Remote Blower Pack. Operation | 44 Steam Line The steam line between the cylinder steam outlet and the distributor may be NORTEC steam hose, copper pipe, or stainless steel pipe or tube. The NHTC/PC is an atmospheric steam generator so it is very important no restrictions are present in the steam line and that the steam line is sized properly to carry the full output capacity of the humidifier. It is also important to minimize the length of steam lines. See Steam Lines and Condensate Returns on page 14 for information on selecting steam lines and maximum recommended lengths. Whenever steam is distributed condensate is formed in the distribution system and steam distributor, manifold, or blower pack. Insulating steam lines is one important way to reduce the amount of condensate formed. Steam lines must be sloped so that condensate does not collect in the lines and create a restriction to steam flow. Condensate Return The condensate must be collected and removed from the system so that it does not build up and leak into the duct (or room if blower pack is used). Condensate can be returned to the NHTC/PC fill cup to reduce water waste or can be fed to drain. Selecting an RH Setpoint The optimum humidity setpoint depends on the reasons that a space is being humidified. The “ASHRAE Handbook – HVAC Applications” recommends specific design relative humidities for specific applications. See also NORTEC publication “When You Need Humidity” (Form 124A) for more information on humidity settings. Health and Comfort - The benefit of humidity is most pronounced for health and comfort in the 40-60% range. A humidity setting of 40-50 % is recommended for this purpose to prevent over humidifying. Note: The job site design may have specified a setpoint chosen specifically for the site. Refer to site documentation and where possible use setpoints specifically determined for the site. Temperature Setback - In cold climates it is often necessary to reduce the humidity level in a space to prevent build up of condensation on the inside of exterior walls, windows, and trim. It is highly recommended that the temperature setback function of the NORTEC digital controls be used under these conditions to prevent damage from condensation. The digital control with an outdoor temperature sensor installed will automatically setback the humidity setpoint to correspond with outdoor temperature. Duct High Limit – The duct high limit is intended to prevent saturation and wetting in duct work at high load conditions. NORTEC recommends a setting of 85% for the duct high limit. It may be necessary to reduce this setting If the duct work is very cold or in contact with exterior cold surfaces. 45 | Operation Steam Line SAM-e Manifold Condensate Drain “P” Trap Figure 37: SAM-e Manifold Blower Pack Steam Line Condensate Drain “P” Trap Figure 38: Remote Blower Pack Operation | 46 NHTC Humidifier Configuration Navigating the NHTC Software The four input buttons below the digital display are used to navigate in the NHTC’s software and to enter values. The function of the four buttons changes depending on what is being displayed on the screen. In all cases 4 icons representing the functions of the buttons are shown at the bottom of the screen. Screen Displays Screen Displays Set P 45% Request – 100% Idle 04/30/09 Security loop : Menu Press to go down a menu level 45% 45 % 30 lb/hr 14:25:22 Closed ?/A/B Press to go left /right one screen ?=Press for information A or B = cylinder of double unit, press to display other cylinders info. ESC Press to go up a menu level Set Press to increase/ decrease value Press to accept setting and go up a level Figure 39: Navigating the NHTC/PC Software Main Menu (NHTC Password) The menu levels of the NHTCare password protected to prevent configuration changes by unauthorized persons. In order to access the menu level press the button corresponding to the Menu icon and when prompted enter the password 0335. Request – 100% Password 03355 Idle 04/30/09 Security loop : 30 lb/hr 14:25:22 Closed Menu ? Main Menu Service Level User Defined Settings Control Settings Diagnostic Menu Menu 47 | Operation Set Enter Code Confirm with Set Menu Set Enter Password Press the Menu button from any status screen. Enter the user level code 0335 using the up arrow to change the value of each digit and the right arrow to move to the next digit. Press the Set button. Main Menu From here you can access all user configurable settings. Select any sub-menu by using the up/down arrow buttons and pressing Set when the desired one is highlighted. Note: Do not make changes unless you are familiar with the software. Service Level The selections in the Service Level allow you to reset service reminders and the fault history. Press Set while highlighting Service Level in the Main Menu. Service Level Reset Error History Reset Service History Reset ResetCylinder Cylinder Reset Cylinder without replacing it Is dangerous !!! Still Reset Cyl ? Menu Set Service Level Reset ResetError ErrorHistory History Reset Service History Reset Cylinder Menu Yes No Set Reset Error History are you sure ? Set Service Level Reset Error History Reset ResetService ServiceHistory History Reset Cylinder Menu Menu Menu Yes No Set Menu Yes No Reset Error History Deletes the list of errors stored in the error history. The Error History is located in the Diagnostics Menu. Resetting the error history is not normally required, but can be done after repairs to remove faults that are no longer needed. Reset Service History Deletes the historical list of service reminders. The Service History can be found in the Diagnostics Menu. Reset Service History are you sure ? Set Reset Cylinder The humidifier uses information about cylinder replacement to optimize the performance of the humidifier. Only after replacing a cylinder select Reset Cylinder, and then press the Yes button. Set User Defined Settings The selections in User Defined Settings allow you to configure most user configurable features available with the NHTC. Press Set while highlighting User Defined Settings in the Main Menu. User Defined Settings Multi ::Standalone Master MultiMode Mode Drain Cool : On Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off ShortCyc : Off Menu Set Multi Mode Master Standalone Master Slave Menu Set Multi Mode Use Multi Mode to configure the humidifier to operate as one humidifier of a group controlled by a single control signal / transducer signal. See Multi Unit Op. Range later in this section. (Default = Standalone) Operation | 48 (User Defined Settings Continued) User Defined Settings Multi Mode :Standalone Double : Parallel DoubleMode Mode Drain Cool : On Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off Menu Set User Defined Settings Multi Mode :Standalone Drain : On DrainCool Cool Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off ShortCyc : Off Menu Set User Defined Settings Multi Mode :Standalone Drain Cool : On Dfactor : 1.0 Dfactor Foam Mode : Off Rapid Modu : Off ShortCyc : Off Menu Set User Defined Settings Multi Mode :Standalone Drain Cool : On Dfactor : 1.0 Foam : Off FoamMode Mode Rapid Modu : Off ShortCyc : Off Menu Set Double Mode (NHTC 150-200 only) Double Mode Parallel Parallel Sequenced Independent Menu Set Drain Cool When On the fill valve is activated at any time that the drain valve is activated to cool the drain water. (Default = On) Drain Cool On Off On Menu Set DFactor 1.0 1.0 Menu Set Foam Mode Off Off Basic Advanced Menu Set 49 | Operation Foam Mode These settings can be used to detect foaming in the cylinder and take corrective action. Basic is a software only setting. Advanced requires installation of a hardware kit. (Default = Off, Default with Kit = Advanced) Set User Defined Settings Multi Mode :Standalone Drain Cool : On Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off ShortCyc : Off ShortCyc Menu Dfactor Increases or decreases the drain time used to control cylinder water conductivity. It should not normally need to be adjusted. A NORTEC representative will provide instructions if it should need o be adjusted. (Default = 1.0) Rapid Modu Reserved for future development. Do not adjust. (Default = Off) User Defined Settings Multi Mode :Standalone Drain Cool : On Dfactor : 1.0 Foam Mode : Off Rapid : Off RapidModu Modu ShortCyc : Off Menu Parallel = cylinders operate in parallel from one set of control signals. Sequenced = cylinders operate in sequence from one set of control signals. Independent = two sets of controls signals and each cylinder follows one of the sets. Set ShortCyc Off Off On Menu Set ShortCyc When On the software will detect short On/Off cycles that could prevent proper draining to control cylinder conductivity. It will reduce output of the unit if short cycling is detected. (Default = Off). (User Defined Settings Continued) User Defined Settings Drain Cool : On Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off ShortCyc : Off Ground : Off GroundFI FI Menu Set User Defined Settings Dfactor : 1.0 Foam Mode : Off Rapid Modu : Off ShortCyc : Off Ground FI : Off Fill FillStop Stop : Off Menu Ground FI When on the contactor will be disengaged whenever the drain valve is activated to prevent current leakage to the drain. (Default = Off). Ground FI Off Off On Menu Set Fill Stop Off Off On Set Menu Set Adapting Reserved for future development. Do not adjust. (Default = Off) User Defined Settings Foam Mode : Off Rapid Modu : Off ShortCyc : Off Ground FI : Off Fill Stop : Off Adapting : Off Adapting Menu Set User Defined Settings Rapid Modu : Off ShortCyc : Off Ground FI : Off Fill Stop : Off Adapting : Off Idle Mode : Idle Only Menu Set User Defined Settings ShortCyc : Off Ground FI : Off Fill Stop : Off Adapting : Off Idle Mode : Idle Only 3DD : Off 3DDForce Force Menu Set User Defined Settings Ground FI : Off Fill Stop : Off Adapting : Off Idle Mode : Idle Only 3DD Force : Off Drain Mode : Fixed ED Menu Fill Stop When activated during a fill cycle the fill valve will be turned off when current equals 95% of demand to prevent overshooting the demand. (Default = Off). Set Idle Mode Idle Only Idle Only 3 Day Drain Keep Warm Menu Set 3DD Force Off Off On Menu Set Drain Mode Fixed ED Fixed ED Ed Float ED Menu Set Idle Mode Configures operation when no demand is present. Idle Only = no action. 3 Day Drain = drain cylinder after 72 hours. Keep Warm = keep cylinder warm by periodically engaging contactor. (Default = 3 Day Drain). 3DD Force When On the humidifier will drain the contents of the cylinder every 3 days regardless of demand or idle condition. It can improve performance for water conditions with sediment or other contaminants. (Default = Off) Drain Mode Configures when a corrective drain will be performed in case the software detects excess current. Fixed ED = drain at 115% of full capacity. Float ED = drain at 115% of current demand. (Default = Fixed ED). Operation | 50 (User Defined Settings Continued) User Defined Settings Fill Stop : Off Adapting : Off Idle Mode : Idle Only 3DD Force : Off Drain Mode : Fixed ED Overcurr : 0.00 Menu Set User Defined Settings Adapting : Off Idle Mode : Idle Only 3DD Force : Off Drain Mode : Fixed ED Overcurr : 0.00 Date : 04/28/09 Menu Set User Defined Settings Idle Mode : Idle Only 3DD Force : Off Drain Mode : Fixed ED Overcurr : 0.00 Date : 04/28/09 Time : 13:49 Menu Set User Defined Settings 3DD Force : Off Drain Mode : Fixed ED Overcurr : 0.00 Date : 04/28/09 Time : 13:49 Unit : Lb/hr Menu Set User Defined Settings Drain Mode : Fixed ED Overcurr : 0.00 Date : 04/28/09 Time : 13:49 Unit : Lb/hr Language : English Menu 51 | Operation Set Overcurr Adjust only if instructed by NORTEC Representative. (Default = 0.00) Overcurr 0.00 0.00 Menu Set Date 04 /28/09 04 04/28/09 Menu Set Time 13 :49 13 13:49 Menu Set Unit Lb /hr Kg/hr Lb/hr Menu Set Language English English French Menu Set Date Sets the date. Highlight month/day/year and use the up arrow button to change the value and the right arrow button to move to the next field. Press Set when correct to save changes. Time Sets the time of day. Highlight hour / minutes. Use the up arrow button to change the value and the right arrow button to move to the next field. Press Set when correct to save changes. Unit Set the units in which the humidifier will display output. Highlight the desired units using the up/down arrow buttons and press Set to save setting. Language Sets the language in which the humidifier will display information. Highlight the desired language using the up/down arrow buttons and press Set when correct to save changes. Control Setting Control Settings allow you to set the type of external controls the humidifier is connected to. In most cases the NHTC humidifier is factory configured to operate with the external controls that were specified for the site. Press Set while highlighting Control Settings in the Main Menu. CAUTION: Improper control configuration can result in over humidifying which can result in damage to property. Control Setting Source Source REG Mode MOD Mode CNT Type Setting Menu Control Setting Source REG REGMode Mode MOD Mode CNT Type Setting Menu Control Setting Source REG Mode MOD MODMode Mode CNT Type Setting Menu Control Setting Source REG Mode MOD Mode CNT CNTType Type Setting Menu : Analog : Demand : Single CH : 0-10 V Set : Analog : Demand : Single CH : 0-10 V Set : Analog : Demand : Single CH : 0-10 V Set : Analog : Demand : Single CH : 0-10 0-10VV Set Source Analog Analog Digital Menu Set REG Mode Demand Demand On/Off RH (P) RH (PI) Menu Set MOD Mode Single CH SingleCH CH Single Dual CH Menu Set REG Mode Configures the type of control used with the humidifier. RH (P) is proportional only internal control based on a transducer signal. RH (PI) is proportional control with an integral. MOD Mode Configures the humidifier to either operate with a single channel (control only) or dual channel (control and high limit). If an On/Off high limit humidistat is used set MOD Mode to Single CH. CNT Type Configures the Volt or amp range of the control signal connected to the humidifier. CNT Type 0-10 V 0-5 V 1-5 V 0-10 V 0-10V 2-10 V 0-16 V 32-16 V 0-20 mA 4-20 mA Menu Source Configures the humidifier to either accept analog control signals from a humidistat or digital signals from a Building Management System. Set Operation | 52 Setting The Setting submenu is used to set a manual capacity limit. It is also used to adjust setpoint, the proportional band, and the integral time if REG Mode is set to RH (P) or RH (PI) and wired to humidity sensors. Access the Setting submenu by pressing the menu key while Setting is highlighted in the Control Settings menu. Control Settings Source REG Mode MOD Mode CNT Type Setting Setting Menu : Analog : Demand : Single CH : 0-10 V Set Setting Manual Manual Cap Cap Set P Prop Band Int Time Menu : 100% : 45% : 16% : 8 min Set Setting Manual Manual Cap Cap Set P Prop Band Int Time Menu : 100% : 45% : 16% : 8 min Set Manual Capacity 100 % 100 % 100% Menu Set Setting Accesses a submenu whose primary purpose is applying a manual capacity override and (for units with transducer controls) configuring a setpoint. Manual Cap Reduces the maximum capacity of the humidifier to a percentage of its full capacity. Use up/down buttons to increase/decrease and press Set to save the setting. Note: Set P, Prop Band, and Int Time will only be displayed in the menu if REG Mode is set to RH (P) or RH (PI). Setting Manual Cap Set SetPP Prop Band Int Time Menu Setting Manual Cap Set P PropBand Band Prop Int Time Menu 53 | Operation : 100% : 45% : 16% : 8 min Set : 100% : 45% : 16% : 8 min Set Set P Sets the humidity setpoint value. The humidifier will attempt to maintain this humidity level in the space where the control transducer is installed. Set P 45% 45% 45 % Menu Set Prop Band 16% 16% 16% Menu Set Prop Band Prop Band should not have to be changed under normal conditions. The Prop Band setting adjusts the band within which the humidifier will modulate between 0 and 100% output. At set point +Prop Band/2 the output will be 0. At set point – Prop Band/2 the output will be 100%. (Setting Menu Continued) Setting Manual Cap Set P Prop Band Int IntTime Time : 100% : 45% : 16% : 8 min Menu Set Int Time 8 min 88 min min Menu Set Int Time Int Time should not have to be changed under normal conditions. In order to correct for error inherent in proportional control, the controller will increase /decrease output by Setpoint-Actual humidity. The Int Time adjusts the frequency at which the correction is performed. Multi Unit Op. Range The NHTC can be configured to network up to sixteen (16) humidifiers (or equivalent of 1600 lb/hr) using a master slave configuration. To operate the NHTC in multi mode; ·The humidifiers must be connected in parallel (daisy chained) using the linkup terminal (J2) on the NHTC driver board (See Multi Mode Wiring on page 28). One humidifier must be designated the master and all others as slave units (see Multi Mode on page 48 for software configuration). The master unit must be the unit to which external controls / transducers and safety loop are connected. Each humidifier in the system including the master must have the range of demand signal in which it will operate configured (see Multi Unit Op. Range below). Example, for four humidifiers with equal capacity set the master to operate between 0% and 25%, set the fist slave for 26% to 50%, set the second slave for 51% to 75%, and set the third slave for 76% to 100%. The Multi Unit Op. Range submenu is used to configure the humidifier’s operating range when Multi Mode in the User Defined Settings menu is set to either Master or Slave. The menu is not displayed if the humidifier is set to Standalone operation. Access the Multi Unit Op. Range submenu by pressing the menu button while Multi Mode Op. Range is highlighted in the Control Settings menu. NOTE: The Multi Unit Op. Range submenu is only displayed if the humidifier has been configured as either a Master or Slave. It is not displayed in Standalone mode. Control Setting Source : Analog REG Mode : Demand MOD Mode : Single CH CNT Type : 0-10 V Setting Multi Unit Op . Range Main Menu Service Level User Defined Settings Control Settings Diagnostic Menu Menu Set Menu Set Multi Unit Op. Range Once the humidifier has been designated as either a master or slave a Multi Unit Op. Range selection will be available in the Control Settings menu. Operation | 54 (Multi Unit Op Range Continued) Multi Unit Op . Range Full Out : 20% Zero Out : 0% Full Out Set the system demand at which the humidifier should output its full capacity. Full Out 20 % 20 % 20% Menu Set Multi Unit Op. Range Full Out : 20% Zero Out : 0% Menu Set Zero Out Set the system demand at which the humidifier should shut off. Zero Out 0% 0% 0% Menu Set Menu Set Diagnostic Menu The Diagnostic Menu provides a historical list of errors and service recorded by the humidifier’s software as well as providing the ability to manually activate humidifier components for troubleshooting purposes. Press Set while highlighting Diagnostic Menu in the Main Menu. Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu Fault History 04.14.07 21:48 03.20.09 02:35 Set Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu 55 | Operation Set Set Menu Set Cylinder Info Displays information regarding the cylinder which can be used by factory technicians to help diagnose operational issues. Cylinder Info 0x00 : 0x01 0x01 : 0x01 0x02 : 0x01 0x03 : 0x01 0x04 : 0x01 0x05 : 0x01 Set Menu Fault History Displays a list of faults which the controller has recorded. It shows the date and time at which the faults occurred. Refer to Table 7: Troubleshooting Warnings and Faultsfor meaning of codes and suggested actions to correct faults. Service History Displays a list of cylinder service that has been performed on the humidifier. It displays the date and time of service. Service History 04.21.07 09:10 03.21.09 10:10 Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu Menu E19A E19A Set (Diagnostic Menu Continued) Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu Remote Test Steam Relay : Off Set Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu Set Output Test Inlet Valve : Off Set Diagnostic Menu Fault History Service History Cylinder Info Remote Test Output Test Performance Menu Menu Menu Set Enter Code Confirm with set Menu Output Test Provides a means for activating all humidifier components (inlet valve, drain valve, contactor etc.) for diagnostic purposes. Components can be activated one at a time. Scroll to component to be tested using up/down buttons, press Set once to activate, press again to turn off. Performance Factory code for configuring the humidifier. Do not enter any values. Performance 000000000 Set Remote Test Provides a means for testing of remote fault relays to confirm they are operating correctly. Relays can be activated one at a time. Scroll between relays with up/down arrow buttons and press Set once to turn on relay, press again to turn it off. Set Operation | 56 NHPC Humidifier Configuration Navigating the NHPC The four input buttons below the digital display are used to navigate in the NHPC’s software and to enter values. The function of the four buttons changes depending on what is being displayed on the screen. In all cases 4 icons representing the functions of the buttons are shown at the bottom of the screen. Screen Displays Screen Displays Manual Cap 100% 90% 45 % NHPC 30 STATUS: HUMIDIFY ESC Menu Press to go down a menu level Press to go left /right one screen No Function Set Press to go up a menu level Press to increase/ decrease value Figure 40: Navigating the NHPC Software Press to accept setting and go up a level Main Menu (NHPC Password) The menu levels of the NHPC are password protected to prevent configuration changes by unauthorized persons. In order to access the menu level press the button corresponding to the Menu icon and when prompted enter the password 0335. NHPC 30 Status Humidifying Menu ? Main Menu Service ServiceLevel Level User Defined Settings Control Setting Menu 57 | Operation Set Password 03355 Confirm with Set Menu Set Enter Password Press the Menu button from any status screen. Enter the user level code 0335 using the up arrow to change the value of each digit and the right arrow to move to the next digit. Press the Set button. Main Menu From here you can access all NHPC submenus. Select any submenu by using the up/down arrow buttons and pressing Set when the desired one is highlighted. Note: Do not make changes unless you are familiar with the software. Service Level Submenu Service Level Reset ResetCylinder Cylinder Reset Cylinder The humidifier uses information about cylinder replacement to optimize the performance of the humidifier. Only after replacing a cylinder select Reset Cylinder, and then press the Yes button. Reset Cylinder without replacing it Is dangerous !!! Menu Set Yes No User Defined Settings Submenu User Defined Settings Dfactor : 1.0 Dfactor Contrast : 50 Menu DFactor 1.0 1.0 Set User Defined Settings Dfactor : 1.0 Contrast Contrast : 50 50f Menu ESC Set Contrast 50 50 1.0 Set ESC Set Control Setting Submenu Control Setting CNT CNTType Type Setting Menu Control Settings CNT Type Setting Setting Menu Set Set Manual Cap 100 % 100 % ESC ESC Setting Manual Cap : 0-10 Set ESC Contrast Increases or decreases the contrast of the LCD display to allow better visibility in different lighting conditions. CNT Type Configures the NHPC to one of its available control types (0-5V, 010V, 2-10V, 0-16V, 3.2-16V, 0-20 mA, 4-20 mA) (Default = 0-10V) CNT Type 0-10 0-10 1.0 : 0-10 Dfactor Increases or decreases the drain time used to control cylinder water conductivity. It should not normally need to be adjusted. A NORTEC representative will provide instructions if it should need o be adjusted. (Default = 1.0) Set Setting Access the manual capacity setting by selecting setting in Control Settings and then selecting Manual Cap. :100% Set Manual Cap Reduces the maximum capacity of the humidifier to a percentage of its full capacity. Use up/down buttons to increase/decrease and press Set to save the setting Operation | 58 Maintenance and Servicing 60 Required Maintenance 60 Cylinder Spent Warning / Fault 61 Replacement Cylinder 61 Removing the Cylinder 63 Drain Valve Cleaning 64 Installing the New Cylinder 65 Extended Shutdown 65 Starting After Extended Shutdown 66 NHTC/PC Maintenance Checklist 59 | Maintenance and Servicing Required Maintenance The NHTC/PC humidifier has been designed to require very little maintenance. Regular maintenance consists of checking the humidifier to insure it is in good condition, replacing the cylinder when the software advises that the cylinder is spent and cleaning out the drain valve whenever the cylinder is replaced. Cylinder Spent Warning / Fault The steam cylinder is disposable and must be replaced at end of cylinder life. Cylinder life is dependent on water supply conditions and humidifier usage. Failure to replace the cylinder at the end of cylinder life will cause the unit to lock out. NORTEC is not responsible for any damages resulting from, or attributed to, the failure to replace a spent cylinder (see Manufacturer’s Warranty). Request – 68% Warning Service LED On + W19 - Cylinder Spent = Cylinder is Spent and must be replaced. Humidifying 04/30/09 Security loop: 34 lb/hr 14:25:22 Closed Menu ? Note: Screens shown are for the NHTC.NHPC screens will be different but have the same meaning/ + 72 Hours Request – 68 % Fault Fault LED On + E19 - Cylinder Spent = Cylinder is Spent and must be replaced. Humidifier has shut down. Fault 04/30/09 Security loop: Menu 34 lb/hr 14:25:22 Closed ? Warning When the software determines that cylinder is spent it first displays a warning and turns on the yellow service LED. The humidifier will continue to operate for another 72 hours after the warning is displayed. Fault After 72 hours the humidifier will display a fault and shut down. If a replacement cylinder is not yet available the humidifier can be temporarily put back into service by turning the humidifier off and on. The humidifier will run for another 72 hours. This reset can be repeated 4 times after which the humidifier will not run until the cylinder is replaced and the “Reset Cylinder” function is entered in the software’s service level. Figure 41: Cylinder Spent Warning / Fault Maintenance and Servicing | 60 Replacement Cylinder The label on the existing cylinder identifies the cylinder type in its top left corner. When ordering a cylinder always quote the three or five digit model number on the label, the humidifier’s serial number and the humidifiers voltage. Serial number and voltage are located on the specification label on the left side of the humidifier. Steam Outlet Secure steam hose to outlet with hose clamp. Electrode Pin Connect color coded cylinder plugs to pin with corresponding color label. There may be 2, 3 or 6 connections depending on cylinder. The spring loaded plug should fit snugly on the pin. Replace if loose or any signs of damage. Electrode Internal Mounting Point High Water Sensor Pin Has a plastic collar around it. Connect orange high water sensor wire here. Label Identifies cylinder type in top left. Always replace cylinder with the same model. Figure 42: NHTC/PC Cylinder Note: NORTEC recommends keeping several replacement cylinders in stock throughout the humidification season. This will prevent possible downtime when the humidifier reports cylinder end of life. 61 | Maintenance and Servicing Removing the Cylinder Warning Disconnect main power at the external disconnect before any servicing. The plumbing and electrical compartments contain high voltage components and wiring. Access should be limited to authorized personnel. Cylinder may be hot, take care when handling. 1 Drain the existing cylinder. Press and release the Drain button on the keypad. The display will show that the manual drain is activated and the yellow service LED will blink. Let the humidifier drain until no more water is flowing out to drain (usually not more than 10 minutes). Press the drain button again to turn off the drain valve. 2 Close supply water shut off valve. 3 Turn the humidifier On/Off switch to off. Turn off power to the humidifier with the external disconnect. Loosen the door screw and remove the door. Remove the cylinder plugs from the cylinder pins by pulling vertically. Using a flat screwdriver loosen the hose clamp where the hose is connected to the cylinder. Using a small flat screwdriver press the tab on the cable tie holding the cylinder in place and pull the cable tie open. 9 Tip the top of the cylinder forward to pivot it out of the steam hose. When free of steam hose lift the cylinder out. 4 5 6 7 8 Hose Clamp Cylinder Plug Lift vertically Tilt cylinder forward to clear hose and then lift from drain valve. Drain Button Cylinder On/Off Switch Door Screw Figure 43: Cylinder Removal Maintenance and Servicing | 62 Drain Valve Cleaning Always clean the drain valve before installing a new cylinder. Scale from the spent cylinder may have fallen into the drain valve and could prevent its proper operation. To properly clean the drain valve it must be removed and disassembled. Note: Be sure to reattach the green ground wire to reduce the risk of electrical shock. 1 Disconnect spade terminals from the drain valve. 2 Remove the screw holding the green ground wire and the two screws holding the valve to the drain pan. 3 Squeeze the tabs of the spring clamp holding the hose to the drain valve and slide it up the hose. Pull hose from drain valve. Lift the drain valve from the drain pan. 4 Unsnap red coil cap on solenoid and remove the solenoid from the valve. 5 Loosen brass nut holding actuator to plastic housing with a wrench and disassemble actuator. 6 Clean actuator components and valve housing (inlet port, outlet port, and cylinder port). Put new o-ring that was supplied with new cylinder into valve. 7 Reassemble actuator making sure tapered end of spring is oriented as shown in Figure 45: Drain Valve Actuator Assembly. Tighten brass nut 1/4 turn past hand tight. 8 Clean out end of hose and reattach to valve. Slide hose clamp back in place and place valve into drain pan. 9 Secure valve with 2 screws and attach green ground wire to solenoid. Cylinder Port and O-ring Ground Wire Hose and Hose Clamp Solenoid Screws Brass Nut (Actuator) Figure 44: Drain Valve 63 | Maintenance and Servicing Spade Connectors Plunger Spring (Note Orientation) Sleeve and Solenoid Figure 45: Drain Valve Actuator Assembly Installing the New Cylinder CAUTION: Make sure the new cylinder is the same model as the one that was removed. Model number is on top left corner of cylinder label. 1 Insert cylinder into drain valve. Tilt cylinder forward and fit end of steam hose to steam outlet. Tip cylinder back into place. 2 Secure cylinder with the reusable cable tie. Tighten hose clamp being careful not to over tighten and crush the plastic cylinder steam outlet. 3 Attach color coded cylinder plugs to the corresponding color coded cylinder pin. Push down completely. Connect high water sensor plug. Spring loaded plugs should fit snuggly onto the cylinder pin. Replace if they are loose or damaged. 4 Replace the humidifier door and secure with door screw. 5 Turn on power to humidifier with the external disconnect. 6 Open supply water shut off valve. 7 Turn the humidifier On/Off switch to On. 8 After the software has completed its start up self check reset the cylinder by going to the “Service Level” menu and selecting “Reset Cylinder”. NOTE: If the “Cylinder Reset” is not entered the humidifier will operate for 72 hours and then fault on cylinder spent! Maintenance and Servicing | 64 Extended Shutdown Should it be required to disconnect power to the humidifier for a period of extended shut-down, always drain the cylinder first. 1 2 3 4 5 Press and release the Drain button on the keypad. Wait until the humidifier is completely drained (usually takes less than 10 minutes). Turn the On/Off switch to the Off position. Shut off power to the humidifier with the external disconnect. Close the supply water shut-off valve. Note: As long as the NHTC/PC is powered, it will automatically drain the cylinder when there has not been a call for humidity for an extended period of time. This feature will reduce or prevent the possibility of corrosion of the electrodes and the accumulation of algae and bacteria growing in the cylinder. The cylinder will remain empty until there is a call for humidity at which time the fill valve will open and refill the cylinder. The unit will go through its normal process for optimum operation. Starting After Extended Shutdown 1 Check to see the humidifier has not been damaged and the installation has not been altered. Refer to the Chapter on Start Up. 2 Turn on the power to the humidifier with the external disconnect. 3 Turn the On/Off switch to the On position. 4 Drain the humidifier completely by pressing and releasing the manual drain button. Wait until there is no water flowing to drain. It usually takes less than 10 minutes. 5 Follow the start up procedure in the chapter on Start Up. 65 | Maintenance and Servicing NHTC/PC Maintenance Checklist Model #: _________________ Serial #: _________________ Cylinder #: Cylinder / System Check W19 Cylinder Spent Tag: ________ E19 Cylinder Spent (If software displays W19 or E19 then cylinder must be replaced) Yellow LED On with W12- Sensor On Warning. (If Yellow LED is On with W12 and cylinder is not new then cylinder will have to be replaced soon.) Other warnings or Faults shown in display? No Yes (See Troubleshooting Chapter for actions to address warnings and faults if present) Replace Cylinder Cylinder drained. Disconnect open, On/Off switch to Off, water shut off valve closed, door removed. Cylinder removed Drain valve installed / ground wire attached. New Cylinder Installed and hose clamps tight. Drain valve removed / cleaned / new O-Ring Cylinder plug colors match cylinder dots. Cylinder plugs snug and in good condition. New cylinder model # (Should be same as removed cylinder) High Water Sensor plug snug and in good condition. Electrical wiring not loose and in good condition, Steam hoses and steam lines in good condition / No kinks in hose, No Signs of water leaking around humidifier, steam line, condensate returns, Door replaced, water shut off valve opened, On/Off switch to On, Disconnect Closed “Reset Cylinder” in Software, (Password 0335, Service Level) Inspected by: Date of inspection: _______/_______/______ Company: Maintenance and Servicing | 66 Troubleshooting 68 Organization of Troubleshooting Chapter 68 Troubleshooting Requirements 69 General Troubleshooting 69 Humidifier 70 Steam Distributors 71 SAM-e 71 Blower Pack 71 Digital Humidistat 72 NHTC/PC Warnings and Faults 72 Warnings 72 Faults 72 Clearing a Fault 79 NHTC/PC Wiring Diagram (Cylinder A) 80 NHTC/PC Wiring Diagram (Cylinder B) 67 | Troubleshooting Organization of Troubleshooting Chapter The troubleshooting chapter is broken down into 2 sections. General Troubleshooting Deals with troubleshooting incorrect humidifier operation, steam line and plumbing issues without any control software warnings or faults. Humidifier Warnings and Faults Deals with warning and error messages that are generated by the humidifier’s control software. CAUTION: Be aware, when troubleshooting, that the humidifier is powered by high voltage and familiarity with both good practices and wiring of the humidifier is recommended. Any troubleshooting that requires opening the cabinet should be done by qualified personnel. NOTE: Most humidifier faults are not caused by faulty equipment but rather by improper installation. A complete fault diagnosis always involves a thorough examination of the entire system. Often, the steam hose connection has not been properly executed, or the fault lies with the humidity control system. Troubleshooting Requirements Ensure the installation meets the installation requirements outlined in the Installation Chapter of this manual. Familiarize yourself with the operation of the humidifier by reading the Operation Chapter of this manual. Wiring diagram for specific for your humidifier is installed on the inside of the humidifier door. A generic copy of the NHTC/PC wiring diagram is also included at the end of this chapter for reference purposes. When contacting your local representative or NORTEC for troubleshooting assistance, please ensure the serial number has been obtained for reference purposes. Troubleshooting | 68 General Troubleshooting The following section provides general guidelines for troubleshooting the NHTC/PC humidifier and auxiliary components. For detailed troubleshooting information refer to the manuals that were provided with the auxiliary equipment and to Table 8: Troubleshooting NHTC/PC Warnings and Faults later in this chapter. Humidifier Table 6: General Troubleshooting Symptom Nothing happens when On/Off switch is turned on. Cause Corrective Action(s) 1 Fuse blown 1 Check inline fuse in yellow housing between transformer and driver board. Check and replace fuse on driver board. 2 Incorrect or no Voltage 2a Check voltage against spec label and correct. 2b Check disconnect and insure humidifier is getting power. 3 Step Down Transformer not outputting 24VAC 3 Replace the transformer 4 Door interlock switch open 4a Replace the door 4b Pull door interlock switch out to override. Caution! The electrical and plumbing compartment contain high voltage components and wiring. Humidifier will not humidify or not reaching RH setpoint 1 Safety loop open 1a Check if W11: Safety loop open is displayed on the humidifier’s display. 1b Check if there is 24 VAC at terminal 2. 1c Check wiring and operation of On/Off devices connected to terminal 1 and 2. Ensure they are closing when they should be. 2 High limit limiting output 2 Check if the high limit is installed too close to the humidifier and if it is operating correctly. 3 No signal on Channel 1 3 Check voltage between terminal 3 and 4. For demand configuration 25% of full scale signal must be present for humidifier to start. For transducer configuration the signal must be lower than setpoint for the humidifier to start. 4 No signal on Channel 2 4 Check voltage between terminal 5 and 3. For demand configuration 25% of full scale signal must be present for humidifier to operate. For transducer configuration the signal must be lower than setpoint for the humidifier to start.. (For units configured for dual channel operation). 69 | Troubleshooting Symptom Humidifier has faulted or has a warning Cause Corrective Action(s) 5 Capacity has been manually limited 5 Check Manual Capacity on status screens. Adjust “Manual Cap” in the “Setting” submenu of the “Control Setting” menu if necessary. 6 Low conductivity water 6 Check if W12: Cylinder Max Level is displayed on the humidifier’s display. If operated on low conductivity water it may take several hours for the NHTC/PC to reach full output capacity. This is normal. During this time the humidifier will not perform any drains and the conductivity of the water in the cylinder will increase. 1 Software has detected an abnormal condition 1 Refer to table 8 troubleshooting warnings and faults. Steam Distributors Symptom Distributor spitting out water Condensation in duct Cause Corrective Action(s) 1 Distributor not level 1 Use support at end o distributor to ensure it is level. 2 “P” Trap too close to distributor 2 “P” Trap must be a minimum of 12 in (30 cm) below the distributor to ensure flow. Relocate if required. 3 Condensate line not sloped sufficiently 3 Sufficient slope to insure flow is required. Reinstall if required. 4 Trap blocked 4 Check that water flows through trap. Clear out if blocked. 5 Condensate line double trapped 5 Condensate lines must not have two traps in sequence. This can cause an air lock and prevent water draining. 6 Steam line not insulated 6 If steam line is long condensate build up could overload distributor condensate port. Insulate line to improve efficiency and install additional condensate traps as required. 1 Installation clearances not observed 1 Refer to distributor installation manual for required clearances. Relocate distributor if required. 2 Design conditions changed 2 Check supply air temperature and humidity to determine if conditions have changed. 3 High limit not functioning 3 Check setting and operation of high limit. Replace if defective. 4 Air proving not installed or not working 4 Check that the humidifier will only operate when there is air moving in the duct. 5 Improper location of high limit 5 Check that high limit is installed where it can detect high duct humidity. Troubleshooting | 70 SAM-e Symptom SAM-e spitting out water SAM-e Grommet leaks Cause Corrective Action(s) 1 “P” Trap too close to SAM-e 1 “P” trap must be at least 12 in (30 cm) below header. Relocate if required. 2 Condensate line not sloped sufficiently 2 Ensure line is sloped sufficiently to carry condensate produced. 3 Steam line not insulated 3 If steam line is long condensate build up could overload the SAM-e condensate port. Insulate the steam line to improve efficiency and install condensate traps as required. 1 Distributor tubes not seated properly 1 Push distributor tubes down until support washer is resting on rubber grommet. 2 Grommet Damaged 2 Replace any damaged grommets Blower Pack Symptom Blower not operating Cause 1 No power to blower pack Corrective Action(s) 1a Check power connection. 1b Check blower pack fuses Note: Blower pack does not Come on unless steam is 2 On/Off Thermostat not closing Being produced by the humidifier. 2 Check wiring to thermostat replace if it does not close when it is exposed to steam. Digital Humidistat Symptom Humidistat Reading incorrectly 71 | Troubleshooting Cause Corrective Action(s) 1 Sensor out of calibration 1 Check reading against known reliable instrument. If out of calibration it can be field calibrated ±10%. Press buttons together until calH appears on the display. Press to display the current calibration trim. Adjust using buttons. Press button when done. 2 Improper sensor location 2 Check that the humidistat is positioned in a location representative of room humidity. 3 Exposed to draft or heat source 3 Check that heat/cold fluctuations, drafts, sunlight, doors, or vents are affecting the reading. 4 No vapour barrier 4 Insure drafts cannot affect reading by ensuing vapour barrier is in place and working. NHTC/PC Warnings and Faults The self-diagnostic system built into the NHTC/PC is continually monitoring the operation of the humidifier. Warnings When problem symptoms are detected, the NHTC/PC will attempt to take self-corrective actions to try to correct the problem. A warning is displayed on the screen for information purposes and the humidifier continues to operate. If the condition which generated the warning is eliminated the warning is cleared from the display. While a warning is displayed the yellow “Service” LED is also illuminated. Faults If the humidifier is not able to self correct a problem symptom it will if necessary respond by shutting itself down. When this occurs the humidifier illuminates the red “Fault” LED, shuts off power to the cylinder and drains the cylinder. Clearing a Fault Check the fault message that the humidifier is displaying and take any necessary actions to correct the cause(s) as outlined in Table 8, Troubleshooting Warnings and Faults. Power cycle the humidifier with the On/Off switch waiting 3 seconds between turning it off and on. Table 7: Troubleshooting Warnings and Faults No. E5 Display Message Cylinder B Controller Missing Extended Missing E6 LED Red Red System Detected Controller cannot detect the driver board for cylinder B Slave unit not communicating with Master Unit. Cause Corrective Action(s) 1 Bad wiring connection. 1 Check ribbon cable to driver board B. 2 Controller not configured correctly 2 If humidifier is not a double unit contact factory for configuration help 3 Driver board damaged 3 Replace driver board 1 Master unit not configured correctly 1 Check configuration of master as outlined in Multi Mode Configuration 2 Slave unit not configured correctly 2 Check configuration of slave as outlined in Multi Mode Configuration 3 Wiring to master unit disconnected 3 Check that wire connected to J2 of Master and Slave nd that polarity is not reversed Troubleshooting | 72 No. Display Message LED System Detected E6 Cont E7 W11 W12 E12 CPU CRC Fault Safety Loop Open Red Grn Blink 73 | Troubleshooting 4 Use 18-24 AWG multistrand, twisted pair, shielded cable 1 Software has detected a hardware problem with main control board 1 Restart humidifier, if error occurs within 1 minute replace main control board. If error does not occur then primary power fluctuation may be the cause. 2 Control board is wet 2 Let board dry and correct condition which caused board to become wet. Try restart when dry. 1 On/Off device connected to safety loop is open 1a Normal operation, no action required 2 Loose wire 2 Check wiring to all On/Off devices connected to terminals 1 and 2. 1 Humidifier has filled to top of cylinder without reaching demand 1 None, for information only, it is normal for a new cylinder to reach max level before water in cylinder is concentrated and for an old cylinder to reach max level near the end of cylinder life. Controller hardware failure Safety loop open (terminal 1 and 2) Red Water level at top of cylinder with no current Corrective Action(s) 4 Incorrect wire type used Water level at top of cylinder or foaming Cylinder Max Level Cylinder max Level no current Cause 1b Wrong setpoint, A/P not sensing air movement 1b Add ¼ teaspoon of salt to fill cup to assist cylinder in concentrating. 2 Water foaming 2 Check if water level is at top of cylinder. If water is not at top there may be foam in the cylinder. See W18 – Foam. 1 Current transformer loose on driver board 1 Open disconnect, ensure current transformer spade connectors are secure. Squeeze with pliers if loose. 2 Primary wire not looped through current current transformer. 2 Open disconnect, rewire primary wire through current transformer. 3 High water sensor plug is on an electrode pin. 3 Install high water senor plug on cylinder pin with shroud around it. No. Display Message LED System Detected W13 Fill valve activated for long time but high water level not reached. Fill Timeout E13 Red Water level in cylinder should rise faster than 1” per minute. W15 Current has exceeded 115% of max Over Current E15 Cause Corrective Action(s) 1 Drain valve leaking or stuck open 1 Clean drain valve or replace (see maintenance chapter) 2 Water shut off valve closed 2 Open shut off valve 3 Fill Valve strainer blocked 3 Clean out strainer on fill valve inlet. 4 High system back pressure 4a Check for kinked hose 4b Check for proper condensate removal (see installation chapter) 4c Install fill cup extension 5 Air flow into cylinder through steam line 5 Disconnect steam line, let cylinder fill part way, then reconnect steam line. 1 Drain blocked water over concentrated 1 Clean the drain line 2 Drain solenoid not energized, water over concentrated 2 Check and correct wiring to drain valve. 3 Filling too fast, fill valve damaged 3 Replace the fill valve 4 Filling too fast, wrong fill valve 4 Check for correct fill valve in parts list, replace if incorrect 5 Wrong cylinder 5a If cylinder replaced check if it is the same model as the one removed. 5b Check water conductivity and check with Nortec representative for alternate cylinder. Red 6 Condensate from Other source feeding to humidifier 6 Remove any condensate lines that are not from the humidifier’s steam distribution system. 7 Contactor seized / sticking 7 Check if contactor disengages when turned off, replace if defective. Troubleshooting | 74 No. Display Message LED System Detected Cause 5 Water supply too conductive W16 Current has exceeded 130% of max Excess Current E16 E17 Red Req off current Red Current detected with no demand 5a Contact NORTEC representative for recommendation on alternate cylinder 5b Change the water supply 6 Wrong cylinder installed 6 Install correct cylinder model 7 Cylinder Spent but not detected by software 7 Replace the cylinder (see maintenance chapter) 1 Contactor seized closed 1 Open Disconnect, check if contactor is closed 2 Driver Board out of Calibration 2 If display indicates output with contactor open then replace the driver board. 1 Back pressure restricting water from entering cylinder 1a Check for restrictions and proper condensate removal in steam line. 1b If water is going down drain during fill cycle then install fill cup extension kit. W18 Foam inside the cylinder. Foam E18 Red W19 Yel E19 Corrective Action(s) Cylinder Spent Yel Red Conductivity too low Electrodes covered with scale. Low water conductivity 2 Organic material in water 2 Install filter to remove organic material 3 Drain blocked water over concentrated 3 Clean the drain line 4 Humidifier short cycling 4 Observe operation to insure humidifier can normally run long enough to perform a drain. If not see W44 / W45 – Short cycling. 1 Cylinder electrodes are covered with scale and humidifier cannot meet demand 1 Replace cylinder with same model number (see maintenance chapter) 1 Drain valve leaking 1 Clean drain valve or replace (see maintenance chapter) 2 Back pressure causing some fill water to go down drain 2a Check for restrictions and proper condensate removal in steam line. W20 2b If water is going down drain during fill cycle then install fill cup extension kit. 3 Wrong Cylinder Installed 75 | Troubleshooting 3 Install cylinder of same model number as was previously installed No. Display Message LED System Detected W20 Cont. W23 No signal from RH control sensor Control sensor broken E23 W24 Limit Sensor Broken 4a Add 1/2 teaspoon of salt to fill cup. 1 Sensor not powered 1 Use multimeter to check that sensor is powered. 2 Sensor not wired correctly 2 Check wiring is secure and wired correctly per instructions in installation chapter. 3 Defective sensor 3 Check if sensor is outputting corresponding to RH. If not replace the sensor. 4 RH less than 5% 4 RH less than 5% are interpreted as a broken sensor. Contact NORTEC Representative for recommendation. 5 Humidifier control configuration incorrect 5 Check that the humidifier control configuration matches the installed sensor output. 1 Normal operation, cylinder is drained if there is no demand for 3 days 1 None required. If feature is not desired change configuration in “User Defined Settings” level of software. 1 Normal operation if configured, humidifier is drained every three days 1 None required, humidifier has been configured to drain every 3 days to control scale build up. 1 High limit humidistat too close to steam distributor 1 Locate the high limit humidistat a minimum of 10 feet (3 m) from the distributor. 2 Loose wiring 2 Check wiring and insure there are no loose connections. 3 High limit humidistat setpoint too low 3 Adjust the high limit setpoint to 85% or more. 4 Defective high limit humidistat 4 Replace defective device. 5 Air proving cycling or chattering 5 Check for smooth operation of air proving switch. No signal from RH Limit sensor Red W25 3-day idle drain activated 3 days with no demand for humidity W26 3 day forced drain activated 3 days since last forced drain Safety loop instability Safety loop opening/closing rapidly Corrective Action(s) 4 Newly installed cylinder not reaching demand for extended time due to Low water conductivity Red E24 W27 Cause 4b Adjust drain factor to 0.7 in User Defined Settings (see operation chapter) Troubleshooting | 76 No. W28 W29 W30 W43 W44 W45 Display Message Demand signal instability Limit signal instability Modbus remote disable Keep warm active Demand signal short cycling Safety loop short cycling 77 | Troubleshooting LED System Detected Demand swinging from low to high rapidly Limit signal swinging from low to high rapidly Network shutdown message No demand in last 2 hours Demand signal cycling on and off Safety loop is cycling On/Off too frequently Cause Corrective Action(s) 1 Improper Proportional and Integral settings in control 1 Adjust proportional and integral settings to reduce swings in demand signal. 2 Control humidistat installed too close to diffuser or doorway to un-humidified space 2 Install humidistat so that it senses air representative of space being humidified. 3 Defective control 3 Replace defective control 1 High limit humidistat too close to steam distributor 1 Locate the high limit humidistat a minimum of 10 feet (3 m) from the distributor. 2 High limit humidistat setpoint too low 2 Adjust the high limit setpoint to 85% or more. 3 Improper Proportional and Integral settings in control 3 Adjust proportional and integral settings to reduce swings in demand signal. 4 Defective control 4 Replace defective control 1 Network signal received by humidifier to shut down. 1 Normal operation for humidifier on network control Contact network administrator to enable humidifier. 1 Humidifier configured to keep cylinder water warm 1 Normal operation for humidifier configured to keep cylinder warm. See Operation Chapter, User Defined Settings to change configuration. 1 The humidifier has detected short cycling and reduced capacity to stabilize operation. 1 Shortcyc set to On. If feature is not desired change configuration in “User Defined Settings” level of software. 2 humidifier oversized 2 Change the manual capacity limit to 50% in the Control Setting level of software. 3 High limit too close to distributor or control in air subjected to humidity swings 3 Locate high limit at least 10 ft (3 m) from distributor. Move control to space representative of space being humidified. 4 Damaged controls 4 Replace any damaged controls. No. Display Message W46 RH High Warning W47 W49 E50 LED RH higher than high RH setpoint RH Lower than low RH setpoint RH Low Warning Cylinder is not recognized Wrong Cylinder installed Modbus Timeout System Detected Red No Modbus signal Cause Corrective Action(s) 1 Setpoint higher than RH alarm setting 1 If the humidifier is still operating then check and adjust setpoints. 1 Humidifier not running 1 Check why humidifier is not running and put it into operation. 2 Setpoint lower than RH low alarm setting 2 Check and adjust setpoints. 1 Warning reserved for future development 1 Contact factory for instructions on configuring software. 1 Loose connection 1 Check connections and polarity of wires. 2 Incorrect Modbus address 2 Check that Modbus address of humidifier matches that of master. 3 Humidifier configured for Modbus but not connected to network 3 Configure controls correctly in “Control Setting” level of software (see Operation Chapter). 4 Improper wire used 4 Use 120 Ohm impedance shielded twisted pair cable. 5 Noise preventing humidifier from detecting signal. 5 Eliminate source of noise causing interference. Troubleshooting | 78 NHTC/PC Wiring Diagram (Cylinder A) A B Unit ON Steam Service COM NC NO COM R BL NC R BK NO Y BK BL Y NO R COM + 5 Vdc (+) Control Signal (+) Limit Signal Loop + 1 2 3 4 5 6 7 8 9 L2 L1 NO Continued on Wiring Diagram# 2522001 (Cylinder B Left Cylinder) which is only applicable to double units NH 150-200 External Internal Blower Pack Air Proving N.O. COM L3 L2 L1 Security Blower Pack Primary Power (-) Signals Circuit for Cylinder A Error Fault Remote PCB C D E F PRI SEC Optional Fuses Door Interlock Switch ON/OFF Switch Contactor Cyl. B Aux. Drain Switch Cyl. A Contactor Fill V Drain V Fill V VTX SUPPLY SWITCH X3 X4 X7 X2 X1 Lev. Sensor DRAIN V. INLET V. M AIN SU PPLY J5 CONTACTOR SC2 Display SC1 2 X6 J3 J3 Driver Board A 3V Battery * J1 CONT.SIGN. F2 200mA Cont Sig. CPU BOARD R BL IN V+ R Y GND Processor Board BK Y IN G GND BK BL IN V+ R J4 * J1 J2 LINK UP J4 X8 EXTERNAL CON LIM.SIGN. BLOWER AUX LEVEL 1 2 3 1 2 3 4 X12 CYL. CHECK High Water Plug Cylinder 2,3, and 6 electrode MODUL B Current Sens 1 F1 6.3 A (AC Loads) * J2 NOTE: NHTC Only NHTC/NHPC HUMIDIFIER (Cylinder A) WIRING DIAGRAM DIAGRAM NUMBER 1509815 DATE Sept 17, 2009 Figure 44: NHTC/PC Wiring Diagram (Cylinder A) 79 | Troubleshooting REV. E NHTC/PC Wiring Diagram (Cylinder B) + 5 Vdc (+) Control Signal (+) Limit Signal Loop (-) Signals Security Circuit for Cylinder B Blower Pack Air Proving N.O. + 1 2 3 4 5 6 7 8 9 R R BK R BL A B C D E F Optional Fuses Contactor Contactor Fill V Drain V DRAIN V. INLET V. VTX SUPPLY SWITCH X3 X4 X7 X2 X1 Lev. Sensor CONTACTOR M AIN SU PPLY Fill V SC2 SC1 2 X6 CONT.SIGN. F2 200mA Cont Sig. LIM.SIGN. BLOWER J1 CPU BOARD LINK UP J4 X8 EXTERNAL CON 1 2 3 1 2 3 4 CYL. CHECK X12 AUX LEVEL Driver Board B High Water Plug Cylinder 2,3, and 6 electrode MODUL B Current Sens 1 F1 6.3 A (AC Loads) BL IN V+ GND R BK Y IN GND BK BL IN V+ R J2 Continued on Wiring Diagram# 1509815 (Cylinder A) Y BK BL Y NHTC/NHPC HUMIDIFIER (Cylinder B) WIRING DIAGRAM DIAGRAM NUMBER 2522001 DATE Sept 17, 2009 REV. D Figure 45: NHTC/PC Wiring Diagram (Cylinder B) Troubleshooting | 80 Spare Parts 82 83 85 87 89 92 81 | Spare Parts Distributor Spare Parts NHTC/PC 005-030 Plumbing Parts NHTC/PC 050-200 Plumbing Parts NHTC/PC 005-030 Electrical Parts NHTC./PC 050-200 Electrical Parts Warranty Distributor Spare Parts ASD & BSD 1506162 - Distributor End Cap Assembly CSD 1506164 - Distributor End Cap Assembly Distributor Core ASD & BSD 1506161 - Distributor Inlet Assembly CSD 1506163 - Distributor Inlet Assembly Figure 46: Distributor Exploded View and Spare Parts Spare Parts| 82 NHTC/PC 005-030 Plumbing Parts 7 8 10 9 2 14 13 6 12 11 4 3 1 5 Figure 47: NHTC/PC 005-030 Plumbing Parts 83 | Spare Parts Table 9: NHTC/PC 005-030 Plumbing Parts List 1 1 1 1 1 550-600/3 1 440-480/3 1 380/3 1 220-240/3 1 208/3 1 550-600/3 1 440-480/3 277/1 1 30 380/3 220-240/1 550-600/1 1 208/1 440-480/1 380/1 1 220-240/3 1 208/3 1 20 550-600/1 1 20 440-481/1 227/1 1 THREE PHASE 10 380/1 220-240/1 DESCRIPTION Volts/Ph NORTEC PART NO. 208/1 ITEM NO. 5 110-120 SINGLE PHASE MODEL 1 1 1 1 CYLINDER 201 1509724 CYLINDER 202 1509725 CYLINDER 203 1509726 CYLINDER 204 1509727 CYLINDER 321 1509732 CYLINDER 305 1509729 CYLINDER 309 1509730 CYLINDER 311 1509731 CYLINDER 303 1509728 CYLINDER 331 1509733 CYLINDER 333 1509734 CYLINDER 421 1509738 CYLINDER 407 1509736 CYLINDER 411 CLAMP FOR SMALL STEAM LINE 1509737 3 DRAIN CHANNEL 1116857 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 DRAIN CHANNEL GASKET VALVE DRAIN 93BEIGE + 24V COIL 1631026 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1456000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 5 1325007 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6 CYLINDER BRACKET 1509593 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 FILL CUP ASSEMBLY SMALL SMALL STEAM LINE 0.875 IN. ID IN. 2522406 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1328810 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 1313244 1 8 9 VALVE, SINGLE FILL, 0.5 L/min VALVE, SINGLE FILL, 1.2 L/min 10 GASKET FOR FILL THRU CAB FITTING BRASS 3/4 BSP / WASHER = 1/2" NPT CABLE TIE REUSABLE 1-400 12 CYL SZ CYL PLUG WITH BLACK MARKER CYL PLUG WITH YELLOW 13 MARKER CYL PLUG WITH RED MARKER CYL PLUG WITH WHITE 14 MARKER 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1353017 1 1 1 1 1 1455000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1506288 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1513003 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1510046 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1510049 1510047 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1510048 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2523334 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2522160 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 OPTIONAL COMPONENTS FOAM DETECTION OPTION FLOAT ASSEMBLY, FOAM DETECTION FILL CUP EXTENSION KIT FILLCUP EXTENSION KIT NHTC/NHPC 9 DRAIN WATER COOLING VALVE, DUAL FILL, 3.3 L/min, 0.5 L/min VALVE, DUAL FILL, 3.3 L/min, 1.2 L/min 1509698 1 Spare Parts| 84 NHTC/PC 050-200 Plumbing Parts 7 8 10 9 2 14 13 6 12 11 4 3 1 5 Figure 48: NHTC/PC 050-200 Plumbing Parts 85 | Spare Parts Table 10: NHTC/PC 050-200 Plumbing Parts List THREE PHASE 550-600/3 2 440-480/3 220-240/3 2 380/3 208/3 550-600/3 2 200 440-480/3 220-240/3 2 380/3 208/3 550-600/3 1 150 440-480/3 220-240/3 1 380/3 208/3 550-600/3 1 100 440-480/3 1 380/3 220-240/3 1 208/3 1 550-600/3 1509744 75 440-480/3 220-240/3 DESCRIPTION CYLINDER 621 Volts/Ph NORTEC PART NO. 208/3 ITEM NO. 380/3 50 MODEL CYLINDER 603 1509739 CYLINDER 607 1509741 CYLINDER 605 1509740 CYLINDER 609 1509742 CYLINDER 617 1509743 CYLINDER 631 1509745 CYLINDER 636 CLAMP FOR LARGE STEAM LINE 1509746 1325009 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 DRAIN CHANNEL 1116857 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 4 DRAIN CHANNEL GASKET VALVE DRAIN 93BEIGE + 24V COIL 1631026 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1 2 5 1 1 1 1 1 1 2 1 1 2 2 2 2 1 2 1456000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 6 CYLINDER BRACKET 1509593 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 7 FILL CUP ASSEMBLY LARGE LARGE STEAM LINE 1.500 IN. ID IN. 2522407 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1328820 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 24 24 24 24 24 24 24 24 24 24 1353032 1 8 9 VALVE, SINGLE FILL, 2.0 L/min 1 1 1 1 1 1 1 1 VALVE, SINGLE FILL, 3.3L/min 1353037 10 GASKET FOR FILL THRU CAB 1455000 1 1 1 1 1 1 1 1 1 1506288 1 1 1 1 1 1 1 1 1513005 1 1 1 1 1 1 1 1510046 2 2 2 1 1 2 1510049 2 2 2 1 1 1510047 2 2 2 1 1 FITTING BRASS 3/4 BSP / WASHER - 1/2" NPT CABLE TIE REUSABLE 5-600 12 CYL SZ CYL PLUG WITH BLACK MARKER CYL PLUG WITH YELLOW MARKER CYL PLUG WITH RED MARKER 13 SUPER PLUG /W WIRE WITH BLACK MARKER SUPER PLUG /W WIRE WITH YELLOW MARKER SUPER PLUG W/ WIRE WITH RED MARKER CYL PLUG WITH WHITE 14 MARKER 11 OPTIONAL COMPONENTS FOAM DETECTION OPTION FLOAT ASSEMBLY, FOAM DETECTION FILL CUP EXTENSION KIT FILLCUP EXTENSION KIT NHTC/NHPC 9 DRAIN WATER COOLING VALVE, DUAL FILL, 3.3 L/min, 2.0 L/min VALVE, DUAL FILL, 3.3 L/min, 3.3L/min 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 2 2 2 2 1 1 2 2 1 4 2 2 2 1 1 2 2 1 2 2 2 1 1 2 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 4 2 2 4 4 2 4 4 4 2 2 4 4 2 4 4 4 2 2 4 4 2 1324264 2 2 4 4 1324265 2 2 4 4 1324266 2 2 4 4 1510048 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2523334 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2522160 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 Spare Parts| 86 NHTC/PC 005-030 Electrical Parts 7 1 5 10 9 8 6 4 Figure 49: NHTC/PC 005-030 Electrical Parts 87 | Spare Parts 2 3 Table 11: NHTC/PC 005-030 Electrical Parts List 1 1 1 1 550-600/3 1 440-480/3 1 380/3 1 220-240/3 1 208/3 1 550-600/3 1 440-480/3 1 380/3 1 30 220-240/3 1 550-600/1 1 440-481/1 550-600/1 1 20 380/1 440-480/1 1 277/1 380/1 1 220-240/1 227/1 20 208/1 220-240/1 1453013 THREE PHASE 10 208/3 1 DESCRIPTION CONTACTOR 30 AMP 1PH Volts/Ph NORTEC PART NO. 208/1 ITEM NO. 5 110-120 SINGLE PHASE MODEL 1 1 1 CONTACTOR 30 AMP 3PH 1323013 CONTACTOR 40 AMP 3PH TERMINAL BLOCK 2 POLE 95A TERMINAL BLOCK 3 POLE 95 AMP 1323014 GROUND CLAMP TRANSFORMER 120/24 VAC 75 VA TRANSFORMER 208 24V 75VA TRANSFORMER 240/24 VAC 75 VA TRANSFORMER 277/24V 75VA TRANSFORMER 380/24V 75VA TRANSFORMER 480/24 VAC 75 VA TRANSFORMER 600/24 VAC 75 VA PCB PROCESSOR NHPC (NOT SHOWN) 1323020 1 1423110 1 2521274 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 PCB PROCESSOR NHTC 2521277 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 PCB DRIVER NHPC, NHTC INCL. ELECTRICITY CONVERTER 2521278 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 SWITCH, ROCKER, DPST 2522489 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 SWITCH SPST 208-240V SWITCH INTERLOCK IDM 423 CABLE RIBBON 40 PIN NHTC/NHPC CABLE RIBBON 10 PIN NHTC FAULT 1473010 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1323091 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2522061 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2522062 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CABLE EPROM SMALL 2522033 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 4 6 NOT SHOWN 10 1323001 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1323027 1323208 1 1 1 1 1 1 1 1323230 1 1 1 1 1 1 1 1 1323277 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1323380 1 1 1 1 1 1323460 1 1 1323575 1 1 1 1 1 1 1 1 1 Spare Parts| 88 NHTC./PC 050-200 Electrical Parts 7 1 5 10 9 8 6 4 Figure 50: NHTC/PC 050-200 Electrical Parts 89 | Spare Parts 2 3 Table 12: NHTC/PC 050-200 Electrical Parts THREE PHASE 1 2 CONTACTOR 40 AMP 3PH CONTACTOR 62 AMP 3PH TERMINAL BLOCK 3 POLE 95 AMP TERMINAL BLOCK 3 POLE 150 AMP TERM. BLOCK 3 POLE 310 AMP 1323014 2 2 2 1 1 1 1 1323028 1 1 1 1 2 2 1 1 4 1 4 4 1 1 1 1323030 550-600/3 440-480/3 4 2 1 380/3 2 4 4 1 220-240/3 208/3 550-600/3 440-480/3 200 1 1 1 380/3 220-240/3 208/3 550-600/3 440-480/3 150 2 2 1 380/3 1 1323015 1323027 220-240/3 1 208/3 1 550-600/3 2 100 440-480/3 2 380/3 550-600/3 2 220-240/3 440-480/3 1323013 380/3 CONTACTOR 30 AMP 3PH 220-240/3 DESCRIPTION Volts/Ph NORTEC PART NO. 208/3 ITEM NO. 75 208/3 50 MODEL 2 4 1 1 1 1 1 1 1 1 1 1 1 1 GROUND CLAMP TRANSFORMER 208 24V 75VA TRANSFORMER 240/24 VAC 75 VA TRANSFORMER 380/24V 75VA TRANSFORMER 480/24 VAC 75 VA TRANSFORMER 600/24 VAC 75 VA TX 24VAC 150VA, PRIMARY 208 TX 24VAC 150VA, PRIMARY 240 TX 24VAC 150VA, PRIMARY 480 TX 24VAC 150VA, PRIMARY 600 TX 24VAC 150VA, PRIMARY 380 1323020 1 1323208 1 PCB FAULT REMOTE PCB PROCESSOR NHPC (NOT SHOWN) 2521279 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2521274 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 PCB PROCESSOR NHTC 2521277 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 PCB DRIVER NHPC, NHTC INCL. ELECTRICITY CONVERTER 2521278 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 8 SWITCH, ROCKER, DPST 2522489 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 SWITCH SPST 208-240V SWITCH INTERLOCK IDM 423 CABLE RIBBON 40 PIN NHTC/NHPC CABLE RIBBON 10 PIN NHTC FAULT 1473010 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1323091 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2522061 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2522062 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 CABLE EPROM LARGE 2522037 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CABLE EPROM DOUBLE JJN60(JLLN60) (OPTIONAL) JJN50(JLLN50) (OPTIONAL) PRIMARY FUSE JJN40 JLLN40 (OPTIONAL) PRIMARY FUSE JJS40 (JLLS40) (OPTIONAL) PRIMARY FUSE JJS50 (JLLS50) (OPTIONAL) PRIMARY FUSE JJS60 (JLLS60) (OPTIONAL) 2522060 1 1 1 1 1 1 1 1 1 1 3 4 5 6 OPTIONAL COMPONENTS NOT SHOWN 10 1323230 1 1 1 1 1 1 1 1 1 1 1 1323380 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2522319 1 1 1 2522320 1 2522321 1509693 1509694 1 1 1423176 1423160 1 1 2522322 1423173 1 1 2522318 1509692 1 1 1 1323575 1 1 1 1323460 1 6 1 6 12 12 6 12 6 12 6 6 6 12 6 6 6 Spare Parts| 90 91 | Warranty Warranty Walter Meier Inc. and/or Walter Meier Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years after installation or 30 months from manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted (with the exception of the cylinder), are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations. THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer, 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. The warranties set forth herein are in lieu 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. THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier. THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment. THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment. THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing of the humidifier, supply lines, drain lines, or steam distribution systems. THE COMPANY makes no warranty and assumes no liability whatsoever for equipment that has failed due to ambient conditions when installed in locations having climates below 14°F (10°C) during January or above 104°F (40°C) during July. THE COMPANY retains the right to change the design, specification and performance criteria of its products without notice or obligation. Warranty | 92 U.S.A. Walter Meier (Climate USA) Inc. 826 Proctor Avenue Ogdensburg, NY 13669 CANADA Walter Meier (Climate Canada) Ltd. 2740 Fenton Road Ottawa, Ontario K1T 3T7 TEL: 1.866.NORTEC1 FAX: 613.822.7964 EMAIL: [email protected] WEBSITE: www.humidity.com www.norteconline.com Certificate No. 002419
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