Hoffer Flow Controls HIT-4U User Manual
  1. Manuals
  2. Brands
  3. Hoffer Flow Controls Manuals
  4. Measuring Instruments
  5. HIT-4U
  6. User manual

Hoffer Flow Controls HIT-4U User Manual

Rate indicator & dual totalizer with modbus & data logging
Hide thumbs
Table of Contents

Advertisement

Quick Links

Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com
Model: HIT-4U
Rate Indicator & Dual Totalizer
With Modbus & Data Logging
USER'S MANUAL
HP- 327
September 2018
107 Kitty Hawk Lane
P.O. Box 2145
Elizabeth City, NC 27909
●
●
1-800-628-4584
(252) 331-1997
Fax (252) 331-2886
●
●
www.hofferflow.com
email: info@hofferflow.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the HIT-4U and is the answer not in the manual?

Questions and answers

Related Manuals for Hoffer Flow Controls HIT-4U

Summary of Contents for Hoffer Flow Controls HIT-4U

  • Page 1 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Model: HIT-4U Rate Indicator & Dual Totalizer With Modbus & Data Logging USER’S MANUAL HP- 327 September 2018 107 Kitty Hawk Lane P.O. Box 2145 Elizabeth City, NC 27909 ●...
  • Page 2 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com NOTICE Hoffer Flow Controls, Inc. makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
  • Page 3 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com LIMITED WARRANTY POLICY FOR HOFFER FLOW CONTROLS HOFFER FLOW CONTROLS, INC. ("HFC") warrants HFC's Precision Series, API Series and CT Series of turbine flowmeters to be free from defects in material and workmanship under...

  • Page 4: Table Of Contents

    5.2 Saving Total ------------------------------------------- 31 5.3 Clearing the Total------------------------------------ 32 5.4 Displaying Logs--------------------------------------- 32 5.5 Fault Conditions ------------------------------------- 33 5.6 Battery Replacement -------------------------------- 33 6. MODBUS COMMUNICATIONS --------------------- 34 7. HIT-4 COMMUNICATION PROGRAM ----------- 43 8. MAINTENANCE ----------------------------------------- 55 HIT-4U HP-327...
  • Page 5 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com APPENDIX A – Declaration of Conformity ---------------- 57 APPENDIX B – Installation Drawings and Conditions for Safe Use for Certified Systems------ 59 HP-327 HIT-4U...

  • Page 6: Introduction

    (LCD). A 4-20 mA analog signal proportional to the flowrate is output on the current loop. The HIT-4U is configurable from the instrument front panel keypad or via Modbus communications. HIT‐4...
  • Page 7 Residential, Commercial & Light Industry Environment. Generic Immunity Standard EN 61000-6-1 Residential, Commercial & Light Industry Environment. Electrostatic discharge requirements EN 61000-4-2 Radiated, radio-frequency, electromagnetic immunity EN 61000-4-3 Electrical fast transient/burst requirements EN 61000-4-4 Immunity to conducted disturbances EN 61000-4-6 HP-327 HIT-4U...

  • Page 8: Model Number Designation

    ( A ) UNCOMPENSATED ENCLOSURE STYLE MODEL HIT-4( OPTION ( B ) (2)* NEMA 4X ENCLOSURE (HIT-4U MOUNTED BEHIND ENCLOSURE) (3)* ALUMINUM CASTING POWDER COATED ENCLOSURE (IP66) (7)* STAINLESS STEEL ENCLOSURE (IP66) PANEL MOUNT ENCLOSURE (IP40) (PD) PANEL MOUNT ENCLOSURE WITH CLEAR DOOR AND LOCK (IP40)
  • Page 9 MODEL HIT-4( )-( )-( )-( ) OPTION ( G ) NO COMPENSATION, ALWAYS USE X ON HIT-4U DEFAULT TEMPERATURE / PRESSURE COMPENSATION ON HIT-4G (TP1_) TEMPERATURE AND PRESSURE TRANSMITTER INPUTS (4-20MA) (TP2_) 100 OHM RTD (DIN385) / PRESSURE TRANSMITTER INPUTS...
  • Page 10 USE WITH A (X-ATEX) RISER. INCLUDES “E2” JUNCTION BOX. UNION OPTIONS: (___U1) OPTIONAL 1" MALE X 1" FEMALE EX-PROOF UNION NOTE: USE WITH MX AND RX OPTIONS (___U2) OPTIONAL 3/4" MALE X 3/4" FEMALE EX-PROOF UNION NOTE: USE WITH MA AND RA OPTIONS HIT-4U HP-327...
  • Page 11 SPECIAL FEATURES MODEL HIT-4( )-( )-( )-( OPTION ( J ) CE MARK REQUIRED FOR EUROPE (PENDING) (SP) ANY SPECIAL FEATURES THAT ARE NOT COVERED IN THE MODEL NUMBER USE A WRITTEN DESCRIPTION OF THE -SP. NO SPECIAL FEATURES HP-327 HIT-4U...

  • Page 12: Features And Specifications

    Internal battery pack backup  Configuration and Grand Total stored in non-volatile memory. Total and Grand Total saved when pressing ►button.  Data Logging: Hourly Total, Daily Total, Event Logs  Modbus Communications Protocol via RS485  Real Time Clock HIT-4U HP-327...

  • Page 13: General

    0.001 to 9,999,999. Linearization: 2-20 points. Decimal Points: Decimal Point positions are configurable for 0, 0.0, 0.00, or 0.000 for rate, total and K-factor. Accuracy: Total and Rate: 0.01% of reading, 1 Count HP-327 HIT-4U...

  • Page 14: Inputs

    1 year typical-Ex system battery pack Protection: Reverse polarity protected Analog Output Scale: 4 – 20 mA follows rate. Accuracy: 0.02% of Full Scale @ 20ºC. Temperature drift: 40 ppm/°C Update Time: 0.125 seconds. Protection: Reverse polarity protected HIT-4U HP-327...

  • Page 15: Pulse Output

    Event Log: Accessing Logs: Via Modbus communication Up to 100 latest logs are viewable on the front panel Physical Temperature: Operating: -40°F (-40C) to 158°F (70C). Humidity: 0 – 90% Non-condensing. Packaging: Explosion proof (Approx. 5"x5"x5", 3 lbs.) HP-327 HIT-4U...

  • Page 16: Installation

    The shield should be connected to the chassis ground lug on the HIT- 4U enclosure. The shield on the opposite end of the cable should be left open. Connections are made to the HIT-4U terminal blocks using wire gauges 26-16 AWG, tightening Torque 0.22 to 0.25Nm.
  • Page 17 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com 12 Installation DC‐ Analog RS485 Flow+ Magnetic  Tx A RS485 Pickup Flow‐ Tx B PCA192 Hoffer Flow Controls 1 2 3 4 5 6 Battery Powered with Magnetic Pickup  DC‐ Analog RS485 Flow+ Tx A Contact  RS485 Flow‐ Tx B Closure PCA192 Hoffer Flow Controls 1 2 3 4 5 6 Battery Powered with Contact Closure  HP-327 HIT-4U...
  • Page 18 Analog  Load RS485 Flow+ Magnetic  Tx A RS485 Pickup Flow‐ Tx B PCA192 Hoffer Flow Controls 1 2 3 4 5 6 Loop Powered with Magnetic Pickup ‐ DC‐ Analog Load RS485 Flow+ Contact  Tx A RS485 Closure Flow‐ Tx B PCA192 Hoffer Flow Controls 1 2 3 4 5 6 Loop Powered with Contact Closure HIT-4U HP-327...
  • Page 19 DC Powered with Analog Output and RediPulse Pickup (0-5V/TTL) ‐ Pulse+ Pulse‐ DC‐ Alarm+ Analog Alarm‐ Load RediPulse RS485 Flow+ Tx A Pickup RS485 Flow‐ Tx B Open  Collector PCA192 Hoffer Flow Controls 1 2 3 4 5 6 DC Powered with Analog Output and RediPulse Pickup (Open Collector) HP-327 HIT-4U...
  • Page 20 * Jumper is required if 4‐20mA is not connected DC Powered (no analog output) with RediPulse Pickup (Open Collector) ‐ Pulse+ Pulse‐ DC‐ Alarm+ Analog Alarm‐ 4‐20mA Load RS485 Flow+ Magnetic  Tx A RS485 Pickup Flow‐ Tx B PCA192 Hoffer Flow Controls 1 2 3 4 5 6 DC Powered with Analog Output and Magnetic Pickup HIT-4U HP-327...
  • Page 21 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com 16 Installation ‐ Pulse+ DC‐ Pulse‐ Analog PCA193 Alarm+ Alarm‐ 4‐20mA Load Flow+ RS485 Tx A Flow‐ RS485 Tx B PCA192 1 2 3 4 5 6 MCP  Pickup DC Powered with Analog Output and MCP/RF Pickup   HP-327 HIT-4U...
  • Page 22 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Installation 17 RS485 Communications Port Wiring Communication Kit P/N: 800-0483 HIT-4U HP-327...

  • Page 23: Ma Current Loop

    8-30 Volts DC is required, depending on the loop load resistance. At nominal 250 Ohms loop resistance the minimum power supply is 13V. Backup batteries are included to ensure that volume accumulation will not be interrupted during a power failure. HP-327 HIT-4U...

  • Page 24: Analog Output Update Time

    Region Supp ly Voltage The HIT-4U outputs a 4-20mA analog signal that is proportional to the calculated flow rate. The 4mA and 20mA settings referred to as OUT LO and OUT HI respectively, may be configured from the front panel of the instrument or via Modbus communications.

  • Page 25: Pulse Output

    Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com 20 Installation Pulse Output HIT-4U provides an optional Pulse Output factory configured for turbine raw frequency or scaled pulse. The scaled pulse outputs one pulse for the least significant digit of the displayed total. A scaling factor of 0.01, 0.1, 1, 10 or 100 is available to reduce or increase the...

  • Page 26: Alarm Output

    Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Installation 21 Alarm Output HIT-4U provides an optional Alarm Output configurable for Rate or Total. The Alarm Output can be configured as Low Alarm, High Alarm or Low/High.
  • Page 27 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com 22 Installation This page intentionally left blank HP-327 HIT-4U...

  • Page 28: Configuration

    Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Configuration 23 4. CONFIGURATION The HIT-4U may be configured locally from the front panel, or remotely using Hoffer HIT-4U Communication program or a Modbus master. Front panel configuration may be done with magnetic pointer through the glass cover, or pressing front panel keys when cover is off.
  • Page 29 Clear Total Clear Total Accepts Sele ction Done Clear Total Next Menu Item Next Option Next Digit 10000000 Set Total Set Total Incr eaments Digit Accepts Sele ction Next Menu Item 10000000 Set Total Next Menu Software Item Version HP-327 HIT-4U...
  • Page 30 Width Flow Pulse Number Units Scale Total Alarm Password Decimal Function Rate Lock Total Unit Units Set Point Sample Rate Low Rate Time Set Point Decimal Contract Rate High Low Cut off Hour Set Point Frequency Hourly Daily HIT-4U HP-327...
  • Page 31 (0) to EEPROM. Grand Total is non-resettable. Set Total and Numeric SETTOT save to Entry 99999999 EEPROM. Read-only SW VER displays HIT-4U software version. Current Date DATE mm-dd-yy 01-01-10 (mm-dd-yy) Current time in TIME hh-mm-ss 23-00-00 24-hour format. HIT-4U Serial...
  • Page 32 TOTL D Total Decimal Point 0.00 0.000 /sec /min RATE Time base for flow rate. /sec /hour /day RATE D Rate Decimal Point 0.00 0.000 Low flow frequency Numeric 0.000 CUTOFF 0.000 cutoff threshold in Hz. Entry 100.000 HIT-4U HP-327...
  • Page 33 K 01 K factor points 2 - Numeric 0.001 1.000 Entry 9999999.9 MODBUS MENU Menu Item Description Options Default Value ADDRSS Modbus address Numeric 000-254 entry Baud rate for *9600 9600 BAUD RS485 57600 115200 *Currently fixed at 9600. HP-327 HIT-4U...
  • Page 34 TEST WIDTH Pulse width in Numeric 4 ms 4 ms Entry 300 ms Pulse Scale. 0.01 This factor represents the number of output pulses SCALE per least significant digit of displayed total determined by the total decimal selection. HIT-4U HP-327...

  • Page 35: Default Configuration

    Entry 999999 Default Configuration HIT-4U is fully configured by the factory prior to shipment. When the instrument is purchased with a Hoffer Flowmeter or when calibration and configuration data are supplied, the instrument is configured as specified. When calibration or configuration data is not available, the instrument is shipped with default values.

  • Page 36: Operation

    Accepts numerical entry Moves to the next digit The HIT-4U displays flow total and flow rate on a two-line liquid crystal display (LCD). The display is updated once per second. The 8-digit non-resettable Grand Total can be viewed on the top line by pressing ▲...

  • Page 37: Clearing The Total

    Communications). To clear the total using a magnetic pointer, slide the magnet slowly across the HIT-4U model name at the top of the front panel overlay. To reset the total from the front panel keypad, use the following key sequence:...

  • Page 38: Fault Conditions

    SYSTEM MENU Press ▲ To return to operating mode Fault Conditions The HIT-4U detects numerous system faults and sends error message via Modbus. (Refer to Chapter 6. Modbus Communications.) Battery Replacement The HIT-4U monitors the battery voltage and displays on the LOW BAT LCD when the battery is approaching the end of its life (3V).
  • Page 39 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Operation This page intentionally left blank HP-327 HIT-4U...

  • Page 40: Modbus Communications

    Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Modbus Communications 6. MODBUS COMMUNICATIONS HIT Com Software or a Modbus Master may be used to configure HIT4U, monitor process variables and obtain diagnostic information from the HIT-4U. Supported Commands Function Code Description (Hex)
  • Page 41 Contract Hour 1-24 1200 Year 0-99 1201 Month 1-12 1202 1-31 1203 Hour 1-24 1204 Minute 0-59 1205 Second 0-59 2000 Total Units = gal, 1 = bbl, 2 = L, 3=lb, 4=kg, 5=acf, 6=acfx1000, 7=scf, 8=scfx1000, 9=m3, 10=nm3 HP-327 HIT-4U...
  • Page 42 K-Factor 5 FP32 0.001-9999999 2045 K-Factor 6 FP32 0.001-9999999 2047 K-Factor 7 FP32 0.001-9999999 2049 K-Factor 8 FP32 0.001-9999999 2051 K-Factor 9 FP32 0.001-9999999 2053 K-Factor 10 FP32 0.001-9999999 2055 K-Factor 11 FP32 0.001-9999999 2057 K-Factor 12 FP32 0.001-9999999 HIT-4U HP-327...
  • Page 43 4011 Alarm Function 0=off, 1=rate lo, 2=rate hi 3=rat lohi, 4=total, 5=test 4012 Total Alarm Set FP64 0.001-99999999 Point 4013 Rate Alarm Low FP32 0.001- Max limited Set Point by rate decimal point selection: 999.999, 9999.99, 99999.9, 99999 HP-327 HIT-4U...
  • Page 44 7050-7051 7007 Request Daily FP64 0 – 99999999 Total 7008 Request Daily FP32 0 – 86400 Run Time Seconds 7009 Request Hourly FP64 0 – 99999999 Total 7010 Request Hourly FP32 0 – 3600 Run Time Seconds HIT-4U HP-327...
  • Page 45 FP64 0 – 99999999 Previous Hour Total 7016 Request FP32 0 - 3600 Previous Hour Run Time Seconds 7018 Request Hourly FP32 -1 (cleared logs) - Download Pointer 7019 Request Daily FP32 -1 (cleared logs) - Download Pointer HP-327 HIT-4U...
  • Page 46 * NOTE – The Total and Grand Total values are available in 3 formats: 64-bit in a single register, 64-bit in four consecutive 16-bit registers and 32-bit in two consecutive 16-bit registers. The 64-bit format is recommended for greater precision, especially with values greater than 7-digits. HIT-4U HP-327...
  • Page 47 Alarm, rate high Alarm, total Flash segment 1 invalid Flash segment 2 invalid Maximum input frequency exceeded EEPROM read error on startup Code execution error Flow rate exceeds 20mA setting Spare 5 Spare 4 Spare 3 Spare 2 Spare 1 HP-327 HIT-4U...

  • Page 48: Hit-4 Communication Program

    To start communication with the HIT-4: Open the program by clicking on the HIT-4 icon on the desktop, or navigate the program file located at C:\Program Files (x86)\Hoffer Flow Controls\HIT-4 and double click on the file “Hit4Master.exe”. The “Com Port” screen will appear.
  • Page 49 “Disconnect” and click “Connect”. 6. When communication is established with HIT-4 the Connecting to device widow will appear: Click “Yes” to read HIT-4 configuration information. Once the configuration has been successfully read, the following window will pop-up: HP-327 HIT-4U...
  • Page 50 “Found Devices” field as well in the “Slave Address” drop down box.  Select the desired device address from the “Slave Address” drop down box.  Click on the “Connect” button to establish communication with the field device. HIT-4U HP-327...
  • Page 51 1 to 80, where 80 represents 8.0 seconds. Contract Hour: Determines the time when the daily log begins. Valid entries are 1 to 24. Set Total: Set Total to user defined value. Valid entries 0 to 99999999. HP-327 HIT-4U...
  • Page 52 The frequency cutoff threshold in Hz. The HIT-4 will ignore an input frequency that is below this user entered value. Valid entries are 0.000 to 100.000. K-Factor Decimal: Sets location of the K-Factor decimal point. Select 0, 1, 2 or 3. HIT-4U HP-327...
  • Page 53 The K-Factor Units parameter is provided for convenience and is not stored in the device. Outputs Page The Outputs Configuration screen is used to configure the Analog, Alarm and Pulse outputs. HP-327 HIT-4U...
  • Page 54 Sets total alarm set point. Valid entries 0 to 99999999. Max value is determined by Total Decimal selection. Pulse Output: Drop down menu selection; Off: turns off pulse out turns on pulse out Test: outputs a test frequency of 1Hz, 50% duty cycle HIT-4U HP-327...
  • Page 55 The configuration may be printed by clicking on the “Print” button located on the bottom of any of the configuration screens. When the “Print” button is clicked on the user has the option to select a printer for printing or saving the configuration as a text file. HP-327 HIT-4U...
  • Page 56 “Flow Total”, “Grand Total”, “Flow Rate”, “Current Day Total”, and “Previous Day Total”. Stop Auto Update: Click on the “Stop Auto Update” stops auto updating. HIT-4U HP-327...
  • Page 57 Faults currently active are displayed in the “Active” window. Faults that have occurred in the past, since the last power reset, are displayed in the “Since Power On” window. The numerical code displayed above each window is used for factory diagnostics. HP-327 HIT-4U...
  • Page 58 Logs”, “Daily Logs” and “Event Log”. Logs are downloaded by clicking on the drop down “Select Log” box, and selecting the desired log to be downloaded. Once the selection has been made, either click on the “Download New” or “Download All” menu options. HIT-4U HP-327...
  • Page 59 Multiple records can be selected by clicking on the first and last desired records to be marked as read. Selected record(s) will be highlighted in blue. Clicking on the “Mark as Read” menu selection will mark all highlighted records as read, and change the new data logs status. HP-327 HIT-4U...

  • Page 60: Maintenance

    Replace the batteries only with battery pack part number 100-2732 for Ex d certified systems. WARNING: The lithium battery that powers the HIT-4U is a sealed unit; however, should Lithium batteries develop a leak, toxic fumes could escape upon opening the enclosure. Ensure that the instrument is in a well-ventilated area before opening the enclosure to avoid breathing fumes trapped inside the enclosure.
  • Page 61 After replacing the battery, set the date and time via the HIT-4 Communication Program or use the front panel keys. Battery shelf life is estimated at 10 years at a storage temperature of 25° C. HP-327 HIT-4U...

  • Page 62: Hit-4U Hp

    Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix A – Declaration of Conformity 57 APPENDIX A DECLARATION OF CONFORMITY HIT-4U HP-327...
  • Page 63 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com 58 Appendix A – Declaration of Conformity HP-327 HIT-4U...
  • Page 64 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems APPENDIX B INSTALLATION DRAWINGS AND CONDITIONS FOR SAFE USE FOR CERTIFIED SYSTEMS HIT-4U HP-327...
  • Page 65 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 66 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...
  • Page 67 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 68 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...
  • Page 69 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 70 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...
  • Page 71 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 72 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...
  • Page 73 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 74 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...
  • Page 75 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HP-327 HIT-4U...
  • Page 76 Flow-Tech, Inc. | In MD 410-666-3200 - In VA 804-752-3450 | www.flowtechonline.com Appendix B – Installation Drawings and Conditions for Safe Use for Certified Systems HIT-4U HP-327...

Table of Contents