Patterson-Kelley TBIG-03 owner manual ` 8.0PARTS AND TECHNICAL SUPPORT, 8.1WIRING DIAGRAMS

Maintenance

all steps and safety checks are repeated. The mo- torized gas valves cannot reopen in the absence of ignition.

11.When the desired water temperature is reached, the operating control switch opens and the pro- grammer is de-energized at Terminal 6 and the in- dicator for "Heat" is turned off. This action also de-energizes Terminal 9, thus closing both main gas valves and turning off the indicator for "Main Gas."

12.When the water temperature is reduced by the load on the system, the operating control switch will close again. The operating sequence will re- cycle to step 5, provided that the limits on water flow, gas pressure, and high temperature are all met.

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8.0PARTS AND TECHNICAL SUPPORT

Spare parts and replacement parts can be ordered from Patterson-Kelley by calling (570) 421-7500. Ask for the Boiler Department. The fax number is (570) 476- 7247. Refer to the parts list shown on the assembly drawing provided with this manual.

Technical information is also available at the above number.

Before calling, please have the model number and se- rial number of your boiler available.

8.1WIRING DIAGRAMS

Wiring and control schematic drawings are shown on the following pages.

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