Superior AA250 Series, Инструкция по установке, эксплуатации и обслуживанию

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Series AA250 Page 14 LT252 Oct 2019
ELECTRICAL DIAGRAM
When servicing or troubleshooting the heater, follow the schematic below to connect all leads to their correct
terminals. All terminal block leads should be placed exactly as shown.
WARNING
The heater is shipped from factory equipped with jumpers between R-W1 and R-W2 contacts.
If energized the heater will start running at full load (high fire).
If the heater is operated with a two stage thermostat, remove the jumpers.
Note: How the two stage thermostat controls the heater:
•
When both contacts ( R-W1 and R-W2) are open the heater is off;
•
When R-W1 closed and R-W2 open heater operates with partial load (low fire);
• When R-W1 closed and R-W2 closed heater operates with full load (high fire).