2
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
Contents