John Wood Direct Vent - Manuel (Page 7)

www. johnwoodwaterheaters .com 7
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS (LIST REFERENCING FIGURES 1-5)
1 Vent Termination Hood
2 Wall Plate
3 ***Vent Pipe
4 Cold Water Inlet Nipple/Diptube
5 **Combo Heating System Supply
Outlet (Optional)
6 T&P Valve
7 Gas Control Valve/Thermostat
(Honeywell)
8 **Combo Heating System Return
Inlet (Optional)
9 *Discharge Pipe
10 Drain Valve
11 Outer Gas Door
12 Manifold Door Assembly (behind
outer door) (see Figure 3 &
Figure 4)
13 *Floor Drain
14 *Metal Drain Pan
15 Flexible Manifold Tube (see
Figure 3 & Figure 4)
16 *Sediment Trap
17 *Ground Joint Union (gas
connection)
18 *Main Manual Gas Shut-off Valve
19 *Gas Supply
20 Baffl e Assembly
21 Rating Plate
22 Anode (under cap)
23 Hot Water Outlet Nipple (or
Optional Nipple/Anode)
24 *Inlet Water Shut-off Valve
25 *Union (water connection)
26 Air Inlet Snorkel
27 Air Tower
28 ***Airbox
29 *Thermal Expansion Tank (required
for all closed systems)
30 Sheet Metal Burner (see Figure 3 &
Figure 4)
31 Gas Orifi ce (see Figure 3 &
Figure 4)
32 Gas Manifold (see Figure 3 &
Figure 4)
33 Manifold Door Gasket (see Figure 3
& Figure 4)
34 Manifold Door (see Figure 3 &
Figure 4)
35 Two Piece Grommet With Clip (see
Figure 3 & Figure 4)
36 Viewport (see Figure 3 & Figure 4)
37 Flexible Manifold Tube (see
Figure 3 & Figure 4)
38 Pilot (see Figure 3 & Figure 4)
39 Thermopile (see Figure 3 &
Figure 4)
40 Pilot Shield (see Figure 3 &
Figure 4)
*, **, *** see notes on following page
Front View
23
1 3 2
6
20
4
9
10
13
14
15
16
17
18
19
2
21
11 12
4
7
22
8
5
Figure 1
Rear View
24
29
25
25
26
1
27
28
Figure 2