Lochinvar EnergyRite ER152 - Manual (Page 19)

Service Manual
19
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
2
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