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ENGLISH
Jandy
®
, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
5.1 Pump Sizing (From Section “5.1 Pump Sizing” on page 19)
All JXi heaters utilize an internal bypass mechanism and thermal regulator valve (TRV) to accommodate ow rates
delivered to the heater from a minimum of 30 gallons per minute (gpm) to a maximum ow of 100 gpm.
CAUTION
The system water pump must be ca-
pable of providing no less than 30 gpm
ofowthroughtheheater.Flowratesat
less than 30 gpm may cause nuisance
operation causing damage to the heater
or causing the heater to turn off.
MODEL
MIN GPM
(LPM)
MAX GPM
(LPM)
JXI 260
30 (114) 100 (379)
JXI 400
30 (114) 100 (379)
Table 8. Recommended Flow Rate Adjustment
Figure 11a. Head Loss Chart
4.0
5.0
6.0
7.0
8.0
9.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
0.0
1.0
2.0
3.0
0.0
2.0
4.0
6.0
20 30 40 50 60 70 80 90 100 110
(psi)
esign Head Loss
( Head)
D
JXi 260K BTU Heater
JXi 400K BTU Heater