2 User Manual

Service Manual

Gas train and controls

)

Figure 2-9_Gas Train Drawing

The gas train and controls assembly

provided on this pool heater have been

tested under the applicable American

National Standard to meet minimum safety

and performance criteria such as safe

lighting, combustion, and safety shutdown

operation.

NOTICE

Maintenance

(continued)

Differential air pressure measurement

The differential air pressure measurement can be checked

with a slack tube manometer (FIG. 2-8). Disconnect the

two tubes from the air pressure switch and connect one to

each side of a manometer. Turn on the pool heater and

allow the combustion air fan to operate. The observed

pressure reading on the manometer should correspond to

the range shown in Table 2C - Differential Air Chart if the

air shutter is properly adjusted. The differential pressure

varies based on air density at elevation.

TABLE - 2C

DIFFERENTIAL AIR CHART

Differential Air Elevation

1.65" - 1.80" w.c. 0 - 4,000'

1.40" - 1.60" w.c. 4,000' - 8,000'

1.20" - 1.40" w.c. 8,000' - 12,000'

Figure 2-8_Air Shutter Pressure Measurement