Use and Care Manual

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 37
8 Connecting the Water Supply 41
8.1 Installation ....................................... 41
8.2 Water treatment .............................. 43
9 Connecting the Condensate Drain 45
10 Connecting Electricity 47
10.1 Water Heater ................................... 47
10.2 Remote Controller ........................... 47
10.3 Recirculation Pump .......................... 48
10.4 Quick Connect Cord-2 ..................... 49
11 Installation of the Remote Controller 50
11.1 General Requirements ..................... 50
11.2 RC-7651M-A .................................... 50
11.3 RC-9018M ........................................ 52
12 Setting the DIP Switches 56
13 Trial Operation 57
14 Checklist After Installation 59
15 Plumbing Applications 61
16 Installation of the Quick Connect
Multi-System 63
17 Maintenance 64
17.1 Periodic Check ................................. 64
17.2 Procedure for Flushing the Heat
Exchanger ........................................ 65
Contents