Page 8 LXi
™
Pool/Spa Heater Installation and Operation Manual
Model
Heater Width
Dim "A"
Vent Diameter Firing Rate
in. cm in. cm BTU/HR kcal
250 23.5 59.7 6 15.2 250,000 63
300 26.5 67.3 7 17.8 300,000 75
400 32.0 81.3 8 20.3 399,000 101
12. Electrical Supply:
Either 120 Volts AC or 240 Volts AC.
13. Modifi cation of Heater for High Altitude:
LXi heaters are normally shipped from the fac-
tory in the low altitude (sea level) operational
confi guration. Table 1 defi nes the altitude des-
ignations as described by the Standard for Gas
Fired Pool Heaters, ANSI Z21.56 in the United
States and Gas-Fired Appliances For Use At
High Altitudes, CAN1-2.17 in Canada. When
an LXi heater is to be installed in a high altitude
application, the burner throat pressure will need
to be adjusted to achieve 1.0"WC. See Section
10.4.3 for instructions on how to do this.
1.7.2 Dimensions
See Figure 1 for a diagram showing the heater's
exterior dimensions and dimensions to critical connec-
tions on the heater.
Figure 1. General Confi guration
A
6.9”
(17.5 cm)
11.2”
(28.4 cm)
13.1”
(33.3 cm)
27.5”
(69.9 cm)
18.5”
(47 cm)
15.5”
(
39.4 cm
)
22.3”
(56.6 cm)
5.5”
(14 cm)
6.0”
(15.2 cm)
Table 1. Altitude Designations For The LXi Heater
NATURAL GAS
ALTITUDE
DESIGNATION
UNITED
STATES
CANADA
LOW ALTITUDE 0-4500 FT 0-4500 FT
(0-1370 M)
HIGH ALTITUDE 4501-10,000 FT NOT
APPLICABLE
LP
LOW ALTITUDE 0-4500 FT 0-4500 FT
(0-1370 M)
HIGH ALTITUDE 4501-10,000 FT NOT
APPLICABLE
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