ULTRATEMP ETI™ Hybrid Heater Installation and User’s Guide
9
Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing
Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing
From Pool Pump
Flow Meter
Minimum
2" PVC Pipe
2" PVC Pipe
Flow Meter
To Pool
OPTIONAL
2" Check Valve Bypass
Check Valves are
optional on heater inlets
but will help system
balancing
60 GPM (220 lpm)
Minimum
(305 mm)
Dual Heater Layout
Figure 12
Extend 12"
(305 mm) past
end heater
inlet for hydraulic
balancing
Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing
From Pool Pump
Flow Meter
Minimum
3" PVC Pipe
2" PVC Pipe
Flow Meter
To Pool
3" Ball Valve Bypass
Check Valves are
optional on heater inlets
but will help for system
balancing
36"
(914 mm)
2" PVC Pipe2" PVC Pipe
2" PVC Pipe
3" PVC Pipe3" PVC Pipe
120 GPM (456 lpm)
Minimum
(305 mm)
12"
Multiple Heater
Layout
Figure 13
Multi-Heater Installations
All plumbing on multiple heater installations must be done in parallel (see Figure 12 and 13 below). An equal flow of
water to each heater is important for optimum operation.
Note: It may be necessary to adjust the water pressure switch if a unit is installed below the water level. Refer to page
10-11 for details on when and how to adjust the pressure switch.
Each heater in a multiple unit installation allows a maximum flow rate of 100 gpm (380 lpm) and requires a minimum
of 30 gpm (110 lpm).
ENGLISH
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