Girard Products GSWH-1 Manuel De L'utilisateur page 14

Functional Description
We include here additional information needed to identify the various components of the system
in order to facilitate communications of the user with Girard Products or an authorized Service
Center for any questions regarding the proper operation of the water heater. The model GSWH-1
consists of the following main sub-systems and components:
1. Water Sub-System:
1.1. Flow Switch
1.2. Heat Exchanger
1.3. Limit Switch / Emergency Cut Off (ECO): (Normally closed; open T>122°F)
1.4. P/T Valve: to provide pressure relief in case of overheating
2. Gas Sub-System
2.1. Regulator with Dual Solenoid Valve
2.2. Dual BTU (Hi/Lo) valve (Powered=Maximum output / Unpowered=Reduced output)
2.3. Burner (Blade type; high efficiency)
2.4. High/Low thermostat
3. Flue Sub-System
3.1. Flue Collector
3.2. Exhaust Blower
3.3. Flue outlet
4. Electrical Sub-System
4.1. 12VDC connection wires
4.2. Power switch
4.3. Blower Motor
4.4. Microprocessor based Circuit Board (Spark Igniter, Safety and Diagnostics)
4.5. Spark Igniter
4.6. Sail switch to detect air flow at the exhaust.
4.7. Mode Selector (High/Lo) to control the operation of the Dual BTU valve
In the following pages we present:
1. Figure 9: Shows an exploded view of the GSWH-1 water heater with identification labels
for all components.
2. Figure 10: A wiring diagram with all electrical components showing all interconnections
and the wire colors adopted.
3. Figure 11: A Circuit Ladder Diagram to illustrate the Control logic and functionality of
each electrical component
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