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Contents
1 Before Installation 3
2 About the Combi Boiler 5
2.1 Included Accessories ............................ 5
2.2 Optional Accessories ............................. 5
2.3 Field Purchased Accessories ................. 6
2.4 Specifications ........................................ 7
2.5 Dimensions............................................ 10
2.6 External View ........................................ 12
3 Choosing an Installation Location 13
4 Installation Clearances 16
4.1 Indoor Installation ................................. 16
4.2 For Quick Connect Multi-System .......... 16
5 Installation of the Combi Boiler 17
5.1 Mounting the Combi Boiler
to the wall ............................................. 17
5.2 Elevation Adjustment Above 2,000 ft ... 18
5.3 Filling the condensate container
with water ............................................. 18
6 Venting the Combi Boiler 19
6.1 Venting Installation Sequence .............. 19
6.2 General Requirements .......................... 19
6.3 Select a Vent Type ................................. 25
6.4 Vent Pipe Installation
(Direct Vent)
....... 26
6.5 Vent Pipe Installation
(Non-Direct Vent) .................................. 32
7 Connecting the Gas Supply 36
8 Connecting the DHW pipe 40
8.1 Installation............................................. 40
8.2 Water treatment ................................... 42
9 Connecting the Heating Pipe 44
9.1 General Requirements .......................... 44
9.2 Low Water Cutoff (LWCO) ..................... 44
9.3 Pressure Relief Valve ............................. 45
9.4 Auto Feeder Connection ....................... 46
9.5 Freeze Prevention ................................. 47
10 Connecting the Condensate Drain 48
11 Connecting Electricity 50
11.1 Combi Boiler.......................................... 50
11.2 Quick Connect Cord .............................. 51
11.3 Outdoor Reset Control with Outdoor
Temperature Sensor ............................. 53
12
Installer Mode (Parameter Settings)
59
13 Setting Temperature 66
14 Service Reminder 67
15 Setting the DIP Switches 67
16 Water Filling and Trial Operation 68
17 Checklist After Installation 73
18 Plumbing Applications 75
18.1 General Requirements .......................... 75
18.2 Only install Combi Boiler as a Water
Heater ................................................... 75
18.3 Zoned with Valves ................................. 76
18.4 Zoned with Pumps ................................ 77
18.5 Air Handler ............................................ 78
18.6 Recirculation System ............................. 79
18.7 Quick Connect Multi System
Installation............................................. 80
19 Maintenance 81
19.1 Periodic Check ....................................... 81
19.2 Procedure for Flushing the Plate Heat
Exchanger .............................................. 82
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