20
VI Wiring — steam
pumped return
10
Figure 10
Control assembly — steam, pumped return
When using a tankless heater, knockout the opening in the inner panel. Locate the controls to allow room for the tankless heater piping. The tankless heater temperature control (not shown) installs in the heater tapping.
7
19
20 | 18 |
21
22 |
23 
24
MV |
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|
MV/PV |
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| |
PV |
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ALARM |
| 9 | |
ALARM | 2 | ||
24 |
| ||
V |
|
| |
| (GND) |
| |
V |
|
| |
24 |
|
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|
SENSE |
|
| |
SPARK |
|
| |
3
1
|
| 8 |
25 | 4 | 25 |
| ||
|
|
6 | 5 | 15 | 15 |
| 12 | ||
|
| ||
|
|
| |
|
| 11 |
|
Part Number
Install strain relief bushings wherever electrical wiring passes through jacket.
| 26 | |
16 | 13 | |
27 | ||
| ||
| 13a | |
| 14 |
17
Vent connections — Connect with ¼" tubing and run vent line outside building per code requirements.
