Nortec MH Series Manuale Utente

MH Series Installation and Operation Manual Includes installation, operation, maintenance, and troubleshooting information for you

7 | Introduction MH Dimensions Figure 4: MHTC Reflow/Flow Control Box Dimensions Figure 5: MHB Control Box Dimension

Introduction | 8 Figure 6: MH Duct Module Dimensions 4.2 in.10.7 cm1.0 in.2.7 cmTYP74.6 in.189.6 cm8.4 in.21.5 cm

9 | Introduction Figure 7: MHTC Reflow Hydraulic Unit Dimensions Figure 8: MHTC Flow/MHB Multi Stage Hydraulic Unit

Introduction | 10 Figure 9: MHB Single Stage Hydraulic Unit Dimensions 1.8 in.4.4 cm2.7 in.6.8 cm4.3 in.10.9 cmWater Inlet3/4 in G

11 | Introduction Installation

Installation | 12 Typical MH Installation Figure 10: Typical MH Installation L1NGroundDedicated Circuit Breaker or D

13 | Installation Location – Duct Module The MH Duct module is designed to be installed on the floor of a duct or air handler. Position the drain pan

Installation | 14 Location – MHTC Reflow Hydraulic Unit The MHTC Reflow Hydraulic Unit should be located adjacent to the duct or air handler cont

15 | Installation Duct Module Assembly and Installation Usually, the design and dimensioning of the ventilation duct/air handler as well as the locat

Installation | 16 Step 2 – Side Panels Step 3 – Top Bracket and Intermediate Members AirFlowSide panelsAirFlowInte

Thank you for choosing Nortec. Proprietary Notice This document and the information disclosed herein are proprietary

17 | Installation Step 4 – Block Side Panels Step 5 - Seal Around Duct AirFlowAirFlowSide sealClampingbarsTop S ea

Installation | 18 Step 6 – Install Media Boxes Step 7 – Install Spray Bar AirFlowMedia BoxTab (4/box)HookTipCutou

19 | Installation Step 8 – Install Mist Eliminator AirFlow If a mist eliminator (optional) is being installed first assemble it

Installation | 20

21 | Installation

Installation | 22 Plumbing General  All water supply and drain line connections must be installed in accordance with local plumbing codes.  Insta

23 | Installation MHTC Flow / MHB Plumbing Figure 21: MHTC Flow / B Plumbing Installation  On the MHTC Flow and B models the overflow connection

Installation | 24 MHTC Reflow Plumbing Figure 22: MHTC Flow / B Plumbing Installation  On the MHTC reflow connect the drain pa

25 | Installation Electrical General MHTC Flow Electrical Figure 23: MHTC Flow Primary Power and Hydraulic Unit Wiring Caution:  W

Installation | 26 MHTC Reflow Electrical Figure 24: MHTC Reflow Primary Power and Hydraulic Unit Wiring MHB Electrical Connect pr

Contents 1 Introduction 2 Receiving and Unpacking 3 MH Components 5 MH Models 6 Options and Accessories 11 Installation 12 Typical MH

27 | Installation External Controls Control Wiring Humidity controls are available from Nortec as accessories. When the MH is used for cooling, then

Installation | 28 On/Off Control Wiring Figure 26: On/Off Controls Figure 27: Digital On/Off Humidistat Note: 1 2 3 MH will run when

29 | Installation Modulating Control Wiring Figure 28: Modulating Controls Figure 29: Digital Modulating Humidistat

Installation | 30 Figure 30: Remote Sensor to Humidistat Wiring Transducer Control Wiring Figure 31: Transducer Wiri

31 | Installation Optional Outdoor Temperature Reset Figure 33: Outdoor Temperature Reset  Each digital controller is equipped with an integrate

Installation | 32 Figure 35: Outdoor Temperature Setback (Modulating Control)

33 | Installation Remote Relay Board Wiring The MHTC (not MHB) remote relay board includes 4 relays that can provide remote status indication. The

Installation | 34 Options and Accessories Mist Eliminator Mist eliminators are available for all MH models. At higher velocities there is a chance t

35 | Start Up Start Up

Start Up | 36 Installation Check Before turning on power to the MHTC, inspect the installation to insure that it was carried out correctly. Refer to

1 | Introduction Introduction CAUTION: Servicing  Every person working with the NORTEC MH Series must read and un

37 | Start Up MHTC User Interface Figure 38: MHTC User Interface MHB User Interface Figure 39: MHB User Interface LCD Di

Start Up | 38 Warning: Damaged units or improperly installed units must not be operated. Damaged or improperly installed units may present a danger

39 | Start Up 6 The green On LED on the front of the humidifier will be on. On the MHTC the display will indicate either Demand or Actual Humidity

Start Up | 40 Performance Data Screen Power Limit = the manually configured capacity limit (see Power Limit on page 52). Capacity A = the current ou

41 | Start Up Startup Information Screen Displays the setting of the Inlet Flush and Softstart parameters. Inlet flush On = flush tank for 60 second

Start Up | 42 Modulating Control The modulating controls use a PI control algorithm to transmit a 0-10V control signal to the humidifier. Adjust the

43 | Start Up MHTC/B Pre-Start Up Checklist Unit Serial #: _________________ Tag: _______________ Model: MHTC Reflow  MHTC Flow  MHB

Start Up | 44 MHTC/B Start Up Checklist Unit Serial #: _________________ Tag: _______________ Model: MHTC Reflow  MHTC Flow  MHB  C

45 | Operation Operation

Operation | 46 MHTC LED Status Lights The keypad and display panel includes 3 LED’s which provide information about the humidifier’s current status.

Introduction | 2 Receiving and Unpacking 1 Check packing slip to ensure ALL material has been delivered. 2 All material shortages are to be reporte

47 | Operation MH Schematic Figure 44: MH Reflow Schematic How the MH Works The MH is an evaporative humidifier/cooler that

Operation | 48 air passing through the media. As a result of the evaporation the humidity of the air is increased and the temperature of the air is

49 | Operation Selecting an RH Setpoint The optimum humidity setpoint depends on the reasons that a space is being humidified. The “ASHRAE Handbook

Operation | 50 MHTC Humidifier Configuration Navigating the MHTC Software The four input buttons below the digital display are used to navigate in th

51 | Operation Maintenance Menu The selections in the Maintenance Menu allow you to reset service reminders for replacing media boxes and the U

Operation | 52 Controls The Controls submenu configures the type of control that will be used to operate the MHTC. The MHTC can be configured for E

53 | Operation Cleaning Mode (MHTC Reflow Only) Sets whether the MHTC Reflow will rinse media and flush the tank or simply flush the tank during clea

Operation | 54 Clean Trg. 2 = μSSensor This setting should be used together with the optional conductivity sensor installed. The cleaning cycles wil

55 | Operation Remote Test Allows the testing of remote relay operation. Use the Up/Down arrow keys to select a relay then press Set to toggle it On

Operation | 56 Modbus Menu From the User Menu highlight Modbus and press Set. The Modbus menu allows you to configure the MHTC controller to communi

3 | Introduction MH Components Figure 2: MH Humidifier Components High VoltageTerminal BlockOn/Off SwitchDis

57 | Operation MHB Configuration The MHB is factory configured to operate under most conditions and does not have any user configurations available.

Operation | 58 Maintenance Shutdown Every 800 hours of operation the MHB will shut down for required maintenance. Maintenance indicated in Maintena

59 | Maintenance and Servicing Maintenance and Servicing

Maintenance and Servicing | 60 Required Maintenance MHB Service Reminder The MHB controller includes a service reminder which will shut

61 | Maintenance and Servicing MHTC Service Warning/Fault The MHTC controller includes a timer that monitors operating hours and generates a warning

Maintenance and Servicing | 62 Maintenance Schedule Regular maintenance is required to keep the Nortec MHTC/MHB operating at its peak capacity

63 | Maintenance and Servicing Table 4: MHTC/MHB Maintenance Schedule to ensure long life and peak performance. Remember to reset the Stage Reset a

Maintenance and Servicing | 64 Table 4: MHTC/MHB Maintenance Schedule Item 30 Days After Start-up When Service Light is Lit End of Season What to Do

65 | Maintenance and Servicing Replacing Media Boxes The Media boxes must be checked each time service is performed on the MHTC/MHB and replaced whe

Maintenance and Servicing | 66 Mist Eliminator Removal Figure 48: Mist Eliminator Removal Media Box Removal Figur

Introduction | 4 Description of Components Table 1: Humidifier Components Component Function of Component Check Valve Provides back flow protection

67 | Maintenance and Servicing Replacing / Cleaning UV Lamp The UV lamp effectiveness is rated for a maximum of 8000 hours of operation. After that

Maintenance and Servicing | 68 Maintenance Shutdown and Extended Shutdown The following procedure should be followed to shut down the MHTC/B for mai

69 | Maintenance and Servicing MHTC/MHB Maintenance Checklist Model #: _________________ Serial #: _________________ Tag: ________ System Check

Troubleshooting

71 | Troubleshooting Organization of Troubleshooting Chapter The troubleshooting chapter is broken down into 2 sections. General Troubleshooting

Troubleshooting | 72 General Troubleshooting The following section provides general guidelines for troubleshooting the MHTC/B humidifier and auxiliar

73 | Troubleshooting Digital Humidistat Symptom Cause Corrective Action(s) Humidistat Reading incorrectly 1 Sensor out of calibration 1 Check re

Troubleshooting | 74 MHTC Warnings and Faults The self-diagnostic system built into the MHTC is continually monitoring its operation. Warnings  Wh

75 | Troubleshooting Code Display Message LED System Detected Cause Corrective Action(s) W20A Safety Loop Open Red and Green Flash Safety Loop Ope

Troubleshooting | 76 Code Display Message LED System Detected Cause Corrective Action(s) W28A Maintenance Red Flash and Yellow Maintenance interva

5 | Introduction MH Models The MH2 is available in three models (See Figure 3: MH Models and Table : MH Specifications.)  MHTC Reflow - provides

77 | Troubleshooting Code Display Message LED System Detected Cause Corrective Action(s) W36A Stage Hygene -- Cleaning of media boxes in progres

Troubleshooting | 78 MHTC Reflow Control Box Wiring Diagram Figure 51: MHTC Series 2, Reflow Control Box Wiring Diagram

79 | Troubleshooting MHTC Reflow Hydraulic Unit Wiring Diagram Figure 52: MHTC Series 2, Reflow Hydraulic Unit Wiring Diagram

Troubleshooting | 80 MHTC Flow Control Box and Hydraulic Unit Wiring Diagram Figure 53: MHTC Series 2, Flow Control Box and Hydraulic Unit Wiring

81 | Troubleshooting MHB 1 Stage Control Box and Hydraulics Wiring Diagram Figure 54: MHB Series 2, 1 Stage Control Box and Hydraulics Wiring Diag

Troubleshooting | 82 MHB Multi-Stage Control Box and Hydraulic Unit Wiring Diagram Figure 55: MHB Multi-Stage Control Box and Hydraulic Unit Wiring

83 | Spare Parts Spare Parts

Spare Parts| 84 MHTC Control Box Parts Figure 56: MHTC Control Box Parts MHTC Reflow Hydraulic Unit Electrical Parts Fi

85 | Spare Parts Table 7: MHTC Control Box Parts Item Description Part No. Qty 1 PCB, Processor MH 2541251 1 2 PCB, Driver Board MH 2541226 1 3

Spare Parts| 86 MHTC Reflow Hydraulic Unit Plumbing Parts Figure 58: MHTC Reflow Hydraulic Unit Parts 75324896101112

Introduction | 6 Options and Accessories Nortec provides a complete line of options and accessories for every humidification application. The follow

87 | Spare Parts Table 9: MHTC Reflow Hydraulic Unit Parts Item Description Part No. Qty 1 MH2 Inline Centrifugal Pump 2557297 1 2 UV Light A

Spare Parts| 88 MHTC Flow Hydraulic Unit Plumbing Parts Figure 59: MHTC Flow Hydraulic Unit Parts 75324896101

89 | Spare Parts Table 10: MHTC Flow Hydraulic Unit Parts Item Description Part No. Qty 1 Staging/Flush Valves See Factory 4 2 Flow Manifold B

Warranty | 90 Warranty Nortec Humidity Inc. and/or Nortec Humidity Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a pe

U.S.A. Nortec Humidity Inc. 826 Proctor Avenue Ogdensburg, NY 13669 CANADA Nortec Humidity Ltd. 2740 Fenton Road Ottawa, Ontario K1T 3T7 TEL: 1.86