Pentair ETi 400 - Sediment Traps

Rev. C 4/2017 ETi 400 High Efficiency Pool and Spa Heater Installation and User’s Guide
23
Manual
Shut-off
Valve
Sediment Trap
Union
At least 9-in (23 cm)
At least 3-in (8 cm)
1-in (3 cm) Diameter
or larger (See
Recommended Pipe
Sizes Chart)
18–24-in of 3/4-in
Gas line from
Valve
Bell
Reducer
SEDIMENT TRAPS
CHECKING GAS PRESSURE THROUGH GAS CONTROL VALVE (CONTINUED)
This appliance is equipped with an unconventional gas control valve that is factory set with a manifold pressure of –.2”
(–0.5cm) wc. Installation or service must be performed by a qualied installer, service agency, or the gas supplier. If
this control valve is replaced, it must be replaced with an identical control.
The combination gas valve incorporates dual shut-off valves and a negative-pressure regulator. For proper operation,
the regulated pressure at the outlet manifold of the valve must be –0.2” (–0.5cm) wc below the reference pressure at the
blower mixer inlet, and the gas valve ‘VENT’ tap must be connected to the end cap air orice as shown in Figure 15.
Do not attempt to adjust the gas input by adjusting the regulator setting. The correct gas regulator setting is required to
maintain proper combustion and must NOT be altered.
To Air Flow
Switch
To Gas
Valve Vent
Vent
Pressure Tap
To High Side
of Differential
Pressure Gauge
To Low Side of
Differential Pressure Gauge
Pressure Tap
Inlet
Figure 15.
To Air Flow
Switch
To Gas
Valve Vent
IMPORTANT: IF THERE ARE ANY IGNITION
ISSUES AFTER THE NATURAL GAS TO PROPANE
(LPG) CONVERSION, CALL PENTAIR TECHNICAL
SUPPORT AT 800.831.7133.
Install a sediment trap and union located
outside the heater panels in accordance with
National code requirements. Do not use a
restrictive gas cock. The sediment trap shall
be either a tee tting with a capped nipple in
the bottom outlet which can be removed for
cleaning, as shown in Figure 16, or an other
device recognized as an effective sediment
trap. All gas piping should be tested after
installation in accordance with local codes.
Section 2: Installation Instructions
Figure 16.