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About the Combi Boiler
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1 Before Installation
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Please read if installing in Massachusetts
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Anchoring Screw (× 7)
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Universal Concentric Vent Kit
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HEIGHT OF EACH FITTING FROM CASE
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PRESSURE RELIEF VALVE
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2.6 External View
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3 Choosing an Installation Location
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Installation in the vicinity of gas ranges,
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State of California: The Combi Boiler must be
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When utilizing an indoor air supply, if the Combi
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5 Installation of the Combi Boiler
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5.3 Filling the condensate container
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6 Venting the Combi Boiler
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Exhaust Chimney Kit (3 in.): IFCK03xx,
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For flexible pipe for chimney
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6.2.3 Termination Considerations
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[DIP Switch Adjustment]
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Below items are required for connecting.
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6.4 Vent Pipe Installation (Direct Vent)
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2 in. pipe*
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(e.g. 2 in. Concentric Termination)
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6.5.2 Consideration for Installation
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6.5.4 Horizontal Vent Termination
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6.5.5 Vertical Vent Termination
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7 Connecting the Gas Supply
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• A gas shut off valve must be installed on the
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[Gas pipe sizing tables]
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8 Connecting the DHW pipe
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NOTE Do not use PVC, iron, or any piping
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Flushing the Plate Heat Exchanger
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Immediately repair any leaks in the system
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to be installed
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Pressure Reducing Valve
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Service Valve Kit
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Condensing Combi Boiler
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Condensate drain piping
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11 Connecting Electricity
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Wiring Diagram for External Options
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6. Secure the Quick Connect Cord with a clamp.
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Outdoor Reset Control
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Setting the Outdoor Reset Control Mode
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3. (e.g. To set Highest Outdoor Temperature)
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Outdoor Reset Control [0-10 Volt Input Control]
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Setting the Outdoor Reset Control
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How to enter “Installer Mode”
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NOTE This function will appear within
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[I:03_Hot (Highest Outdoor Temperature)]
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[I:09_EPP (External Pump)] (page 51)
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[I:14_HPS (Heating Water Pressure Setting)]
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Using DHW and Heating at the same time
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13 Setting Temperature
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14 Service Reminder
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15 Setting the DIP Switches
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16 Trial Operation
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If error codes “11”, “12”, and “90” appear, check
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1. Stop any water demand.
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17 Checklist After Installation
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Make sure that air separator is installed.
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18 Plumbing Applications
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18.3 Zoned with Valves
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18.4 Zoned with Pumps
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18.5 Air Handler
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18.6 Recirculation System
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18.7 Quick Connect Multi System Installation
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For Single Unit
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For Quick Connect Multi-System
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