Lochinvar 151 Installation & Operation Manual
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Lochinvar 151 Installation & Operation Manual

Condensing water heater
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See also: Service Manual , User's Information Manual
WARNING:
If the information in this
manual is not followed exactly, a fire or
explosion may result causing property damage,
personal injury or loss of life.
-- This water heater MUST NOT be installed in
any location where gasoline or flammable vapors
are likely to be present.
-- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any
phone in your building.
• Immediately call your gas supplier from a near by
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
• Installation and service must be performed by a
qualified installer, service agency, or the gas
supplier.
Installation & Operation
Manual
Models: 151 - 801
This manual must only be used
WARNING
by a qualified heating installer
/ service technician. Read all
instructions, including this manual
and the Armor Water Heater Service
Manual, before installing. Perform
steps in the order given.
to comply could result in severe
personal injury, death, or substantial
property damage.
Save this manual for future reference.
AWII-I-O Rev G
Failure

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Summary of Contents for Lochinvar 151

  • Page 1 AWII-I-O Rev G Installation & Operation Manual Models: 151 - 801 WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. -- This water heater MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present.

  • Page 2: Table Of Contents

    Contents 6. SYSTEM PIPING HAZARD DEFINITIONS ............ 2 System Water Piping Methods ......... 37 PLEASE READ BEFORE PROCEEDING ......3 Flow Switch and Relief Valve Installation ......37 THE ARMOR WATER HEATER -- HOW IT WORKS ..4-6 RATINGS ................7 Flow Switch Adjustment ...........

  • Page 3: Please Read Before Proceeding

    Installation & Operation Manual Please read before proceeding When servicing the water heater – Installer – Read all instructions, including WARNING this manual and the Armor Water Heater • To avoid electric shock, disconnect electrical supply Service Manual, before installing. Perform before performing maintenance.

  • Page 4: The Armor Water Heater - How It Works

    Installation & Operation Manual The Armor Water Heater - How it works... 19. High voltage junction box Stainless steel heat exchanger Allows water to flow through specially designed coils for maximum The junction box contains the connection points for the line heat transfer, while providing protection against flue gas corrosion.
  • Page 5 The Armor Water Heater - How it works... (continued) Models 151 - 200 Left Side (inside unit) - Models 151 - 200 Rear View - Models 151 - 200 Rear View - Model 286 Left Side (inside unit) - Model 286...
  • Page 6 Installation & Operation Manual The Armor Water Heater - How it works... Models 400 - 501 Rear View - Models 400 - 501 Left Side (inside unit) - Models 400 - 501 Models 601 - 801 Left Side (inside unit) - Models 601 - 801 Rear View - Models 601 - 801...

  • Page 7: Ratings

    Installation & Operation Manual Ratings Model Number Input Modulation Btu/hr Water Content Water Note: Change “N” Vent/Air Size Gallons Connections Connections to “L” for L.P. gas models. (Note 2, 3) (Note 1) AWN151PM 30,000 - 150,000 1-1/4" 1/2" 3"/3" AWN200PM 40,000 - 199,999 1-1/4"...

  • Page 8: Determine Water Heater Location

    Installation & Operation Manual Determine water heater location Installation must comply with: This appliance requires a special venting WARNING system. If using PVC the vent connection • Local, state, provincial, and national codes, laws, regulations, to the appliance must be made with the and ordinances.
  • Page 9 Installation & Operation Manual Determine water heater location (continued) Figure 1-1 Closet Installation - Minimum Required Clearances For closet installations, CPVC, WARNING polypropylene or stainless steel vent material MUST BE used in CLOSET INSTALLATION 1/4” MINIMUM CLEARANCE a closet structure due to elevated AROUND HOT WATER PIPES temperatures.

  • Page 10: Provide Air Openings To Room

    Installation & Operation Manual Determine water heater location Residential garage installation Provide air openings to room: Precautions Armor water heater alone in equipment room Take the following precautions when installing the appliance in 1. No air ventilation openings into the equipment room are a residential garage.

  • Page 11: Corrosive Contaminants And Sources

    Installation & Operation Manual Determine water heater location (continued) When using an existing vent system to Table 1A Corrosive Contaminants and Sources install a new water heater: Products to avoid: Failure to follow all instructions can result WARNING in flue gas spillage and carbon monoxide Spray cans containing chloro/fluorocarbons emissions, causing severe personal injury or death.

  • Page 12: Removing A Water Heater From Existing Common Vent

    Installation & Operation Manual Determine water heater location When removing a water heater from existing common vent system: g. Any improper operation of the common venting system Do not install the Armor water heater DANGER should be corrected so the installation conforms with the into a common vent with any other National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or appliance.

  • Page 13: Prepare Water Heater

    Figure 2-1 Water heater Mounted on Shipping Pallet Verify that the stamping on the orifice disk matches the water heater size (151 – 286) (see Table 2A above). Place the orifice into the black rubber grommet in the side of the gas valve and secure in the valve (FIG. 2-2).
  • Page 14 Installation & Operation Manual Prepare water heater Model 400 Model 501 1. Remove the top and front access covers from the unit (no 1. Remove the top access cover from the unit (no tools tools required for removal). required for removal). 2.

  • Page 15: Leveling The Water Heater

    Installation & Operation Manual Prepare water heater (continued) Models 601 - 801 Leveling the water heater Set the water heater in place and check level. 1. Remove the top access cover from the unit (no tools a) Adjust legs if necessary to level the water heater, required for removal).

  • Page 16: General Venting

    Figure 3-1 Two-Pipe Sidewall Termination - See page Figure 3-2 PVC/CPVC Concentric Sidewall Termination 24 for more details (Models 151 - 601 Only) - See page 28 for more details Direct venting options - Vertical Vent Figure 3-4 PVC/CPVC Concentric...

  • Page 17: Install Vent And Combustion Air Piping

    Mixing of venting materials will void the warranty and certification of Figure 3-6 Near Water Heater Air Piping Models 151 - 200 the appliance. Installation must comply with local NOTICE requirements and with the National Fuel Gas Code, ANSI Z223.1 for U.S.

  • Page 18: Requirements For Installation In Canada

    1.5% for each 25 feet of vent length. The 3 and 4" Concentric Vent Kit available from Lochinvar (see Section 4 – Sidewall Termination – Table 3B Concentric Vent Kit Equivalent Vent Lengths Optional Concentric Vent) and the 3 and 4" Concentric...

  • Page 19: Air Inlet Pipe Materials

    Installation & Operation Manual General venting (continued) Air inlet pipe materials: The PVC, CPVC, or ABS air inlet pipe should be cleaned and The air inlet pipe(s) must be sealed. Choose acceptable sealed with the pipe manufacturer’s recommended solvents combustion air inlet pipe materials from the following list: and standard commercial pipe cement for the material used.

  • Page 20: Optional Room Air

    Model Kit Number Description All PVC vent pipes must be glued, properly 151 - 200 KIT30052 Room Air Kit NOTICE supported, and the exhaust must be pitched 286 - 801 KIT30053...
  • Page 21 Table 3D PVC/CPVC Vent Pipe, and Fittings beads as it will needlessly soften the pipe. Approved PVC/CPVC Vent Pipe and Fittings Figure 3-8 Near Water Heater PVC/CPVC Venting - Models 151 - 601 Item Material Standard PVC Schedule 40, 80 ANSI/ASTM D1785...

  • Page 22: Polypropylene

    COMPONENT CONNECTIONS OF VENT SYSTEM Duravent Polypro Centrotherm InnoFlue SW Model Polypropylene Joint Sidewall Retaining Sidewall Polypropylene Joint Sidewall Kit* Adapter Connector Bracket* Adapter* Adapter Connector 151-200 ISAAL0303 IANS03 IATP0303 ISTAGL0303 3PPS-AD 3PPS-LB 3PPS-HLK 400-601 ISAAL0404 IANS04 IATP0404 ISTAGL0404 4PPS-AD 4PPS-LB 4PPS-HLK 701-801...

  • Page 23: Stainless Steel Vent

    Flue S.S. Flue S.S. Flue Intake Air Adapter Termination Adapter Termination Adapter Termination Termination Termination Termination FSBS3 9392 2SVSTP03 151 - 200 300715 303889 9301PVC 9314TERM 2SVSLA03 2SVSTEX0390 FSRC3 5300CI 2SVSRCX03 FSBS4 FSAIH04 9492 2SVSTP04 286-601 F303759 9401PVC 9414TERM 2SVSLA04...

  • Page 24: Sidewall Direct Venting

    Follow instructions below when determining WARNING Model Kit Number Vent Size vent location to avoid possibility of severe personal injury, death, or substantial 151 - 200 KIT30045 3 inch vent property damage. 286 - 601 KIT30046 4 inch vent A gas vent extending through an exterior...
  • Page 25 - Typical Stainless Steel Sidewall Termination of Air and • At least 6 feet from adjacent walls. Vent Models 151 - 801 w/Field Supplied Fittings • No closer than 12 inches below roof overhang. • At least 7 feet above any public walkway.

  • Page 26: Prepare Wall Penetrations

    Cut a hole for the vent pipe. For either combustible or Model Vent Centerline Width noncombustible construction, size the vent pipe hole with at least a 1/2 inch clearance around the vent pipe 151 - 200 3" 3" 5 5/8" outer diameter: 286 - 601 4"...

  • Page 27: Multiple Vent/Air Terminations

    Supplied Fittings (must also comply with Figure 4-1B) passing through floors or walls. 5. Seal exterior openings thoroughly with exterior caulk. Figure 4-5C A Typical Sidewall Termination Assembly - Models 151 - 801 PVC/CPVC or Stainless Steel GALVANIZED SIDEWALL THIMBLE...

  • Page 28: Sidewall Termination - Optional Concentric Vent

    (Factory Kit #CVK3003 for 3” or 7 inch diameter for #CVK3007 installations) into the diameter - Models 151 - 200 and #CVK3007 for 4” diameter structure to install the termination kit. - Models 286 - 601). Both combustion air and vent pipes 5.
  • Page 29 Installation & Operation Manual Sidewall direct venting (continued) Sidewall termination – optional concentric vent: Models 151 - 601 Figure 4-10 Concentric Vent Dimensional Drawing - Figure 4-11 Concentric Vent Dimensional Drawing - Models 151 - 200 Models 286 - 501 "A"...
  • Page 30 Installation & Operation Manual Sidewall direct venting Sidewall termination – optional concentric vent: Models 151 - 601 Figure 4-13 Concentric Vent Sidewall Attachment Note: CVK3003 shown for illustration purposes. Multiventing sidewall terminations DO NOT use field-supplied couplings CAUTION to extend pipes.

  • Page 31: Vertical Direct Venting

    Installation & Operation Manual Vertical direct venting Vent/air termination – vertical Follow instructions below when WARNING Figure 5-1A PVC/CPVC Vertical Termination of Air and Vent determining vent location to avoid possibility of severe personal injury, death or substantial property damage. Determine location Locate the vent/air terminations using the following guidelines:...

  • Page 32: Multiple Vent/Air Terminations

    Installation & Operation Manual Vertical direct venting Vent/air termination – vertical Prepare roof penetrations Figure 5-2 Vertical Terminations with Multiple Water Heaters Air pipe penetration: Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter. 12”...

  • Page 33: Vertical Termination - Optional Concentric Vent

    Installation & Operation Manual Vertical direct venting (continued) Vertical termination – optional concentric vent: Models 151 - 601 Description and usage 2. Cut one (1) hole (5 inch diameter for #CVK3003 installations Lochinvar offers an optional concentric combustion air and vent pipe termination kit.
  • Page 34 Installation & Operation Manual Vertical direct venting Vertical termination – optional concentric vent: Models 151 - 601 Do not operate the appliance with DO NOT use field-supplied couplings WARNING CAUTION the rain cap removed or recirculation to extend pipes. Airflow restriction will of combustion products may occur.

  • Page 35: Alternate Vertical Concentric Venting

    EXISTING Table 5A Alternate Vertical Concentric Vent / Chase Sizes SEAL SEALED Vent / Air Minimum Existing Model Inlet Size Vent / Chase Size 151 - 200 3" 5" 286 - 601 4" 7" FLUE OUTLET 701 - 801 6"...
  • Page 36 Installation & Operation Manual Vertical direct venting Existing vent as a chase Follow all existing termination and clearance requirements and allowable pipe lengths. Use only approved venting materials listed in the General Venting Section of this manual. Figure 5-10 Existing Vent as a Chase AIR INLET FLUE EXHAUST SEAL...

  • Page 37: System Piping

    Installation & Operation Manual System piping System water piping methods For Example: If using a 1 1/4 inch pipe size (Models AWN151 - AWN200) select paddle #1. Observe a minimum of 1/4 inch clearance around all Install the assembled flow switch into the 1 inch fitting of un-insulated hot water pipes when openings around the pipes the tee installed in Step 4 (see FIG.

  • Page 38: Scalding

    130°F About 30 seconds Tank sensor: 135°F About 10 seconds Lochinvar supplies a tank sensor. The tank sensor must be 140°F Less than 5 seconds installed in the tapping provided in the lower 25% of the storage 145°F Less than 3 seconds tank to achieve proper operation.
  • Page 39 Installation & Operation Manual System piping (continued) Figure 6-4 Single Heater - Single Tank BUILDING FLOW CHECK RETURN VALVE (TYPICAL) COLD WATER SUPPLY MIXING VALVE EXPANSION THERMOMETER TANK HOT WATER WATER SUPPLY HEATER BALL VALVE UNION (TYPICAL) (TYPICAL) WATER HEATER TEMPERATURE CIRCULATOR &...
  • Page 40 Installation & Operation Manual System piping Figure 6-5 Single Heater - Single Tank (2 Temperature) FLOW CHECK VALVE (TYPICAL) 180° HOT THERMOMETER WATER (TYPICAL) SUPPLY UNION BALL VALVE HIGH TEMPERATURE 140° HOT (TYPICAL) (TYPICAL) BUILDING RETURN MIXING WATER VALVE TEMPERATURE SUPPLY &...
  • Page 41 Installation & Operation Manual System piping (continued) Figure 6-6 Single Heater - Double Tank BUILDING FLOW CHECK RETURN VALVE (TYPICAL) COLD WATER SUPPLY BALL VALVE (TYPICAL) MIXING EXPANSION THERMOMETER VALVE TANK Y-STRAINER (RECOMMENDED) WATER HEATER CIRCULATOR HOT WATER FLOW SWITCH SUPPLY UNION (TYPICAL)
  • Page 42 Installation & Operation Manual System piping Figure 6-7 Double Heater - Single Tank Number of Units Model Required Pipe Sizes in NPT 1 1/2" 2" 2" 2" 2 1/2" 3" 3" 1 1/2" 2" 2 1/2" 2 1/2" 3" 3" 4"...
  • Page 43 Installation & Operation Manual System piping (continued) Figure 6-8 Double Heater - Double Tank Number of Units Model Required Pipe Sizes in NPT 1 1/2" 2" 2" 2" 2 1/2" 3" 3" 1 1/2" 2" 2 1/2" 2 1/2" 3" 3"...

  • Page 44: Gas Connections

    Install ground joint union for servicing, when required. GAS SUPPLY On Models 151 - 400 install a manual shutoff valve in the gas supply piping outside water heater jacket when required by local codes or utility requirements. In Canada – When using manual main shutoff valves, it must be identified by the installer.

  • Page 45: Natural Gas

    Installation & Operation Manual Gas connections (continued) Natural gas: Do not check for gas leaks with an open WARNING flame – use the bubble test. Failure to use Pipe sizing for natural gas the bubble test or check for gas leaks can cause severe personal injury, death, or 1.

  • Page 46: Check Inlet Gas Supply

    Step 3. piping to the appliance. When re-tightening the set screw, be sure to On Models 151 - 501 loosen the set screw one (1) full WARNING tighten securely to prevent gas leaks. turn from inside the pressure tap on top of the gas valve.

  • Page 47: Gas Pressure

    (FIELD SUPPLIED) FOR THE MANOMETER ensure proper ignition and flame characteristics. TUBING. Figure 7-6 Inlet Gas Supply Check - Models 151 - 286 LOOSEN THE SET SCREW ONE (1) FULL TURN AND PLACE THE MANOMETER TUBING OVER THE PRESSURE TAP...

  • Page 48: Field Wiring

    2. Connect low voltage wiring to low voltage connection PUMP L4/N board as shown in FIG. 8-3 on page 51 of this manual and the water heater wiring diagram. Figure 8-2 Routing Field Wiring (Models 151 - 286) LOW VOLTAGE CONNECTION BOARD LOW VOLTAGE WIRING KNOCKOUTS...

  • Page 49: Low Gas Pressure Switch

    Installation & Operation Manual Field wiring (continued) Tank thermostat Low gas pressure switch 1. Connect the tank thermostats (isolated contact only) to 1. If a switch is provided to detect low gas pressure, remove the the tank thermostat contacts as shown in FIG. 8-3. jumper wire from the terminals on the connection board and connect them to its normally open contacts (FIG.

  • Page 50: Runtime Contacts

    Installation & Operation Manual Field wiring Runtime contacts The SMART SYSTEM control closes a set of dry contacts whenever the burner is running. This is typically used by Building Management Systems to verify that the water heater is responding to a call for heat. Alarm contacts The SMART SYSTEM control closes another set of contacts whenever the water heater is locked out or the power is...
  • Page 51 Installation & Operation Manual Field wiring (continued) Figure 8-3 Low Voltage Field Wiring Connections...

  • Page 52: Condensate Disposal

    A Neutralizer Kit (FIG. 9-1) is available from the factory condensate. If condensate is allowed to (KIT3087 for Models 151 - 501 and KIT3046 for Models freeze in the line or if the line is obstructed 601 - 801). in any other manner, condensate can exit from the water heater tee, resulting in 4.

  • Page 53: Startup

    Installation & Operation Manual Start-up Chlorine concentration less than 200 ppm Propane water heaters only – Your propane WARNING supplier mixes an odorant with the propane 1. Do not fill the water heater or operate with water to make its presence detectable. In some containing chlorine in excess of 200 ppm.

  • Page 54: Final Checks Before Starting The Water Heater

    Installation & Operation Manual Start-up Final checks before starting the water  Check vent piping and air piping heater 1. Check for gastight seal at every connection, seam of air  Read the Armor Water Heater Service Manual to piping, and vent piping. familiarize yourself with SMART SYSTEM control Venting system must be sealed gastight WARNING...

  • Page 55: For Your Safety Read Before Operating

    Installation & Operation Manual Start-up (continued) Figure 10-2 Operating Instructions - Models 151 - 286 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.
  • Page 56 Installation & Operation Manual Start-up Figure 10-3 Operating Instructions - Models 400 - 801...
  • Page 57 Installation & Operation Manual Start-up (continued) Check flame and combustion Set water heater operation (continued) 4. Place the water heater into the active position by pressing Set tank set point temperature the RIGHT SELECT [ON] key (FIG. 11-1, page 63). Please note that the brackets ([]) denote NOTICE screen status.
  • Page 58 Installation & Operation Manual Start-up Configuration of the cascade Set clock Please note that the brackets ([]) denote Please note that the brackets ([]) denote NOTICE NOTICE screen status. screen status. The SMART SYSTEM control has a built-in clock that it When installed in a Cascade system, the individual controls uses for its night setback feature and for logging events.

  • Page 59: Operating Information

    The control monitors the temperature difference between to the water tank. If a tank sensor is connected, the SMART the inlet and the outlet sensor. On Models 151 - 501 if this SYSTEM control will ignore the tank thermostat. difference is between 25 - 30°F the control will reduce the fan speed.

  • Page 60: Water Heater Temperature Regulation

    Installation & Operation Manual Operating information Monitor external limits When the outlet temperature exceeds 200°F, the automatic high limit action occurs. The water heater shuts down until the outlet Connections are provided on the connection board for water temperature cools below 190°F, and a 60 second timer has external limits such as flow switch, gas pressure switches, expired.

  • Page 61: Cascade

    Installation & Operation Manual Operating information (continued) Cascade Access modes When multiple water heaters are installed, they can be User wired together in a cascade sequence. A maximum of eight water heaters can be controlled from a single control. In The user can adjust tank target temperatures by pressing the this application one water heater would be designated as the NAVIGATION dial when “SETPOINTS”...

  • Page 62: Sequence Of Operation

    Installation & Operation Manual Operating information Sequence of operation OPERATION DISPLAY 1. The control will turn on the water heater pump (always ON except in Night Setback). The flow switch and/or LWCO must close. 2. The control turns on power to the louver relay. The louver proving switch, air pressure switch, and blocked drain switch must close.

  • Page 63: Armor Water Heater Control Module

    Installation & Operation Manual Operating information (continued) Armor water heater control module Use the control panel (FIG. 11-1) to set temperatures, operating conditions, and monitor water heater operation. Figure 11-1 Control Panel NAVIGATION DIAL (PRESS OR TURN) RESET KEY LEFT SELECT KEY RIGHT SELECT KEY (SOFT KEY) (SOFT KEY)

  • Page 64: Status Display Screens

    Installation & Operation Manual Operating information Figure 11-2 Status Display Screen Status Display Screens Section Display Description The unit has not received a call for heat from a remote thermostat nor STANDBY has it received a call for heat from a DHW thermostat. START The unit has begun a burn cycle and is checking all safety circuits.
  • Page 65 Installation & Operation Manual Operating information (continued) Status Display Screens (cont’d) Section Display Description TANK: The temperature read by the tank sensor (if connected). INLET TEMP: The temperature read at the inlet to the heat exchanger. OUTLET TEMP: The temperature read at the outlet of the heat exchanger. The temperature difference between the inlet and the outlet of the DELTA T: heat exchanger.
  • Page 66 Installation & Operation Manual Operating information Status Display Screens (cont’d) Section Display Description Turning the NAVIGATION dial will select the next or previous Status Screen. Pressing the NAVIGATION dial will show the next fault, NSB (Night Setback) trigger, or ramp delay setting. Pressing the NAVIGATION dial will select the setting indicated by the cursor.

  • Page 67: Maintenance

    Installation & Operation Manual Maintenance Maintenance and annual startup Table 12A Service and Maintenance Schedules Service technician Owner maintenance (see the following pages for instructions) General: • Address reported problems • Inspect interior; clean and vacuum if Daily • Check water heater area necessary;...

  • Page 68: Address Reported Problems

    Installation & Operation Manual Maintenance Follow the service and maintenance procedures given throughout this manual and in component literature WARNING shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

  • Page 69: Check Water System

    Installation & Operation Manual Maintenance (continued) Failure to inspect for the above conditions Following installation, the valve lever must WARNING WARNING and have them repaired can result in be operated AT LEAST ONCE A YEAR to severe personal injury or death. ensure that waterways are clear.

  • Page 70: Check Burner Flame

    Installation & Operation Manual Maintenance Perform start-up and checks 3. Remind the owner to follow the proper shutdown procedure and to schedule an annual start-up. 1. Start water heater and perform checks and tests specified Cleaning heat exchanger in Section 10 - Start-up. 2.

  • Page 71: Check Delta T

    CTN20005 Rear Refractory Cover 1. The circulator shipped with the Armor water heater is MSC20083* Nylon 4" Wheel Brush* water-lubricated. No oiling is required. 151 - 400 KIT30063 MSC20084 3mm Allen Wrench 2. Check other circulators in the system. Oil any circulators requiring oil, following circulator manufacturer’s...

  • Page 72: Diagrams

    Installation & Operation Manual Diagrams Figure 13-1 Ladder Diagram 120VAC JUNCTION BOX NEUTRAL GROUND TERMINAL STRIP TERMINAL STRIP 120V SUPPLY "L" 120V SUPPLY "N" ON / OFF INTEGRATED CONTROL SWITCH X1-1 X1-6 BLOWER 3.15A X1-2 BUILDING BUILDING RECIRC PUMP RECIRC CONTACTS BUILDING PUMP...

  • Page 73: Wiring Diagram

    Installation & Operation Manual Diagrams (continued) Figure 13-2 Wiring Diagram LOW VOLTAGE BOX DEPICTS 120 VAC OPTIONAL ITEMS HIGH VOLTAGE BOX DEPICTS DUAL SENSOR SINGLE HOUSING INTEGRATED CONNECTION BOARD CONTROL JUNCTION ALARM X1-3 OR/BK CONTACTS RUN-TIME PUMP CONTACTS X1-4 24 VAC LOUVER RELAY COIL LOUVER X1-2...
  • Page 74 Installation & Operation Manual Notes...
  • Page 75 Installation & Operation Manual Notes...

  • Page 76: Revision Notes

    Revision Notes: Revision A (ECO #C06238) initial release. Revision B (ECO #C07442) new layout in InDesign, piping diagram on page 43 (ECR #R03671), and edits made to the Ratings Page (page 7). Revision C (ECO #C07575) changes made (mixing valves) to the piping diagrams on pages 39 - 43, changes made to the gas supply piping images on page 44 (ECR R03740), the addition of the rope gasket notice on page 71 (ECR R03940), change water pipe clearances from...

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