2
Contents
1 Before Installation 3
2 About the Water Heater 5
2.1 Included Accessories ....................... 5
2.2 Optional Accessories ....................... 5
2.3 Specifications ................................... 7
2.4 Dimensions ...................................... 8
2.5 External View ................................... 10
3 Choosing an Installation Location 11
4 Installation Clearances 13
4.1 Indoor Installation ........................... 13
4.2 Outdoor Installation ........................ 14
4.3 For Quick Connect Multi-System ..... 14
5 Installation of the Water Heater 15
5.1 Mounting the Water Heater
to the wall ........................................ 15
5.2 Elevation Adjustment Above
2,000 ft ............................................. 16
5.3 Filling the condensate container
with water ........................................ 16
6 Venting the Water Heater 17
6.1 Venting Installation Sequence ......... 17
6.2 General Requirements ..................... 17
6.3 Select a Vent Type ............................ 23
6.4 Vent Pipe Installation
(Direct Vent)
.. 24
6.5 Vent Pipe Installation
(Non-Direct Vent) ............................ 30
6.6 Outdoor Installation ........................ 36
7 Connecting the Gas Supply 36
8 Connecting the Water Supply 40
8.1 Overview of the Recirculation
System .............................................. 40
8.2 Installation ....................................... 43
8.3 Water treatment .............................. 45
9 Connecting the Condensate Drain 47
10 Connecting Electricity 49
10.1 Water Heater ................................... 49
10.2 Remote Controller ........................... 49
10.3 Recirculation .................................... 50
10.4 Quick Connect Cord-2 ..................... 51
11
Installation of the Remote Controller
52
11.1 General Requirements ..................... 52
11.2 RC-7651M-A .................................... 52
11.3 RC-9018M ........................................ 54
12 Setting the DIP Switches 58
13 Setting for Recirculation 59
14 Trial Operation 60
15 Checklist After Installation 63
16 Plumbing Applications 65
17 Installation of the Quick Connect
Multi-System 66
18 Maintenance 68
18.1 Periodic Check ................................. 68
18.2 Procedure for Flushing the Heat
Exchanger ........................................ 69
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