1 - A.O. Smith Water Heaters

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3. Quick Connect Multi System Installation • The Quick Connect Multi System allows the installation of two units together utilizing only the Quick Connect Cord. The Quick Connect Cord is 6 ft. long. Install the units 2-18" apart from each other to ensure the cord will be able to reach between the units. (See Typical Plumbing diagram). (If the distance between the two units is too great, not only will the cord not be able to reach, but the water temperature may also become unstable because of the difference in pipe length between the two units). System Diagram * When connecting two units, use only a single remote controller. Quick Connect Cord Cord Connector Cord Connector Terminal Block Remote Controller Note: Connect the remote controller to only one of the units. Remote Controller Cord Gas Supply Piping G Cold Water Supply Hot Water Typical Plumbing Distance at center: 16-32 in. Distance on sides 2-18 in. Union Union Quick Connect cord Make this distance as short as possible. * The hot water temperature will become unstable as the pipe length increases. Pressure Relief Valve Shutoff Valve Union Gas Valve Shutoff Valve Shutoff Valve Hot Water Cold Water 36 Leave enough clearance around the plumbing to apply insulation. It will be necessary to add bends to the piping to ensure that this clearance is available. Size the piping to allow for the maximum flow rates of the units. • Insulate the hot water piping to prevent heat loss. Insulate and apply heating materials to the cold water supply piping to prevent heat loss and freezing of pipes when exposed to excessively cold temperatures.
4. Before Installation Caution Check the Gas • Check that the rating plate indicates the correct type of gas. Check that the gas supply line is sized for 190,000 Btuh for this unit. Check the Power • The power supply required is 120V AC, at 60Hz. Using the incorrect voltage may result in fire or electric shock. Do Not Use Equipment for Purposes Other Than Those Specified • Do not use for other than increasing the temperature of the water supply, as unexpected accidents may occur as a result. Check Water Supply Quality • If the water supply is hard, acidic or otherwise impure, treat the water with approved methods in order to ensure full warranty coverage. Use Extreme Caution if Using With a Solar Pre-Heater • Using this unit with a solar pre-heater can lead to unpredictable output temperatures and possibly scalding. If absolutely necessary, use mixing valves to ensure output temperatures do not get to scalding levels. Do not use a solar pre-heater with the quick-connect multi-system. Checkup • Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary. 5. Choosing Installation Site * Locate the appliance in an area where leakage from the unit or connections will not result in damage to the area adjacent to the appliance or to the lower floors of the structure. When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict combustion air flow. Caution • Install the water heater in a location where it is free from obstacles and stagnant air. • Consult with the customer concerning the location of installation. • Do not install the water heater near staircases or emergency exits. •Avoid places where fires are common, such as those where gasoline, benzene and adhesives are handled, or places in which corrosive gases (ammonia, chlorine, sulfur, ethylene compounds, acids) are present. Using the incorrect voltage may result in fire or cracking. 37
Page 1 and 2: Owner’s Guide and Installation Ma
Page 3 and 4: Important Safety Information-1 To p
Page 5 and 6: Caution Be sure to electrically gro
Page 7 and 8: General Parts-1 Main Unit Indoor/Ou
Page 9 and 10: General Parts-3 Display The illustr
Page 11 and 12: How to Use (Using the remote contro
Page 13 and 14: 2 Set temperature. 3 Turn on hot Tu
Page 15 and 16: An alarm will sound for ten seconds
Page 17 and 18: Preventing Damage from Freezing-2 I
Page 19 and 20: Regular Maintenance-2 Periodic Main
Page 21 and 22: Troubleshooting-2 Temperature The w
Page 23 and 24: Troubleshooting-4 Check for an Erro
Page 25 and 26: Specifications •Specifications ma
Page 27 and 28: External outfitting Part Nos. Part
Page 29 and 30: Combustion unit and gas route Part
Page 31 and 32: Hot-water feed route Part Nos. Part
Page 33 and 34: Electronic control unit, Remote con
Page 35: 1. Included Accessories The followi
Page 39 and 40: Securing of space for repair/inspec
Page 41 and 42: Clearance Requirements from Vent Te
Page 43 and 44: 8. Vent Pipe Installation (Indoor I
Page 45 and 46: Combustion Air Supply combustion ai
Page 47 and 48: Gas Line Sizing Adapted from UPC 19
Page 49 and 50: 11. Plumbing Applications Cold Wate
Page 51 and 52: Remote Controller • Applicable Mo
Page 53 and 54: Pump Wiring * This feature is not a
Page 55 and 56: Caution Handling after trial operat
Page 57 and 58: WIRING DIAGRAM MAIN WATER FLOW CONT
Page 59 and 60: Remote Controller Installation Guid
Page 61: Installing the Remote Controller Ou

1 - A.O. Smith Water Heaters

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