Gas Pipe Sizing / Gas Pipe Escutcheon - Pentair ETi 250 Installation And User Manual

Installation
24
GAS PIPE SIZING
STAGE TWO LOW PRESSURE GAS PIPE SIZING
Maximum Equivalent Pipe Length (ft)
Natural Gas 1000 BTU/FT
0.60 Specific Gravity at 0.5 in. WC Pressure Drop
Propane Gas 2500 BTU/FT
1.50 Specific Gravity at 0.5 in. WC Pressure Drop
Input 1/2"
Model (KBTU) N P
ETi
10
250 *
250
GAS PIPE ESCUTCHEON INSTALLATION
Required Parts: P/N 467107, Gas Pipe Escutcheon (PVC), P/N 270114, Phillips Retention Screw (#8)
1. IMPORTANT! Turn off the electrical supply to the heater and turn off the pump.
WARNING! Risk of fire or explosion. Never test for gas leaks with an open flame.
The following escutcheon installation instructions are intended for a new pool installation only, not for retrofit purposes.
2. When installing the ¾" pipe into the gas valve, place the gas pipe escutcheon over the pipe so that the larger circle
is facing the heater's service panel and the smaller circle with the screw is facing away for the heater service panel
(toward the union) as shown in Figure 19.
3. Slide the escutcheon flush against the outside of the heater service panel and the gas pipe opening. Be sure to
completely cover large gas pipe opening in the panel to prevent rodents to gain access to the inside of the heater.
4. Hand-tighten the retention screw to secure the escutcheon in place.
5. Safety check the gas pipe for leaks as instructed in BASIC SYSTEM OPERATION, page 12.
MANUAL
SHUT-OFF
VALVE
1-IN (3CM) DIAMETER
OR LARGER (SEE
RECOMMENDED PIPE SIZE
CHART)
AT LEAST 9-IN (23 CM)
AT LEAST 3-IN (8 CM)
BELL REDUCER
SEDIMENT TRAP
Gas Pipe Escutcheon Installation
Figure 19.
ETi 250 High Efficiency Pool and Spa Heater Installation and User's Guide
3
3
3/4" 1" 1-1/4"
N P N P N
20 50 60 200 200 550 600
UNION
18-1/4 -IN OF 3/4-IN
GAS LINE FROM VALVE
gas pipe. Be sure the flange
covers the circular opening in
Table 2: Note (*) A 3/4" gas line can be used for up
to 2 ft (61 cm) maximum length from the gas valve
in addition to the sediment trap.
1-1/2"
P N P
*
Flange
Screw
Flange installed on the
the heater panel.
Gas Pipe
A
Round knock-out
removed from panel