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10. Reattach access panels to the opposite sides. For ASME Models call your factory representative. ACCESS PANEL Fig. #1 PRESS SWITCH AGS HI-LIMIT Fig. #2 18 JACO FITTING Fig. #3 BULB & CLIP Fig. #4 RE-INSTALLED IN/OUT HEADER ON OPPOSITE SIDE. Fig. #5 19 ELECTRICAL WIRING NOTE: If it is necessary to replace any of the original wiring, it must be replaced with 105° C wire or its equivalent, and /or 150° C wire or its equivalent as originally built. MILLIVOLT SYSTEM The Millivolt System residential heater is equipped with a self-generating electrical system in which the electric current is provided by means of a pilot generator. No external electrical connections are required. ELECTRONIC INTERMITTENT IGNITION DEVICE SYSTEM (IID) NOTE: Heaters are factory wired for 240V power supply. The standard field wiring connection is on the right side of the heater. To wire the heater from the left side, follow the steps below: 1. Remove the two (2) screws that hold down the junction box to the sway brace. Untie excess yellow wires located behind the junction box. 2. Move the junction box to the left side of unit and attach the box to the sway brace. 3. Secure 24V yellow wires to sway brace panel with existing wire retainers. 4. Connect the wires inside the junction box, either 120V or 240V depending on the field wiring. NOTE: 7/8" Dia. holes not utilized on jacket and control box can be used for fireman switch or auxiliary control interface wiring. NOTE: Heater must be electrically grounded and bonded. Bonding lug is provided loose with the unit. Install bonding lug on lower right or left side of jacket as necessary for bonding the unit. Mounting hole is provided on the jacket. Option Location For Left Control Box Side Field Wiring (Factory Mounted Location) Sway Brace Bonding Lug Fig. # 9030.1 Bonding Lug(Optional Location) (Standard Location) ATMOSPHERIC LOW NOx The Electronic Intermittent Ignition Device automatically lights the pilot and main burners upon a call for the heat. The heater is supplied with a dual voltage transformer for 120V or 240V input power hookup. NOTE: IID Propane Units and IID Low NOx natural gas units only Heater is equipped with an electronic ignition device with a 100% safety lockout feature. If the heater fails to start or lockout, reset the ignition device by interrupting the power to the heater for 60 seconds. Caution: If service replacement of the electronic ignition device is required, replace only with a 100% safety lockout device with 90 second trial for pilot ignition. HONEYWELL IGNITION CONTROL Fig. # 8929.1 20 21 WIRING DIAGRAM KEY PINK CONNECTOR BLUE CONNECTOR Fig. # RP8096 *If required by Local Code, install at this location. Fig. #2353 For 120 V input power to the unit, connect the black wire to the .L1. or hot leg of the power supply. Connect the white wire to the .L2. or neutral leg of the power supply. Attach the wire nut to the red wire. There should be no connection to the red wire for 120V operation. For Low NOx pool heaters wire nut each red wire independently. Fig. #9240 For 240 V input power to the unit, connect the black wire to the .L1. or hot leg of the power supply. Connect the red wire to the .L2. or second hot leg of the power supply. Attach the wire nut to the white wire. There should be no connection to the white wire for 240V operation. for Low NOx pool heaters wire nut each white wire independently. Fig. # 9241 Heater must be electrically grounded and bonded in accordance with local codes, or, in the absence of local codes, with the latest edition of the National Electrical code, ANSI/NFPA 70. (Canada- Canadian Electrical Code, CSA C22.1, Part 1 and Part 2.) * NOTE: Input power to the heater (120/240V) can be supplied from the load (Pump) side of time clock or directly from the switch/GFCI power source. If a remote device (supplied by others) is to be used, the direct from switch/GFCI power source method is preferred. When a remote device is utilized, the direct power source will allow the Safety Faults to be displayed including the "REM", if the remote device is not in a "CALL FOR HEAT" mode. WIRING DIAGRAM MILLIVOLT UNITS WITH MECHANICAL THERMOSTAT WIRING DIAGRAM - IID UNITS (atmospheric) 22 WIRING DIAGRAM - IID UNITS (Low NOx) 23 Drain Plug (Located in Control (IID) Thermostat Gas Valve Pilot On-Off Switch Transformer Drain Plug (Located in Control (IID) Thermostat Gas Valve Pilot On-Off Switch Transformer SECTION 4 / SERVICING INSTRUCTIONS GENERAL LOCATION OF CONTROLS Bypass Hi Limit (Located in Return Return Header) Header) AGS Hi- Ignition Limit (Located in Inlet/ Digital Oulet Header) Module Unitherm Governor Roll-Out Switch Drain Plug Fig #2005 CONTROL PANEL REMOVAL 1. Remove (4) screws from sides of control panel. 2. Rotate control panel down until panel stops. Do not force. NOTE: Caution must be taken not to damage controls or wiring. Control Panel Mounting Screws (4) CONTROLS/ADJUSTMENTS/REPLACEMENTS Temperature Adjust Buttons Mode Button LCD Display...

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