Sediment Traps - Pentair ETi 400 Instructions D'installation

CHECKING GAS PRESSURE THROUGH GAS CONTROL VALVE
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 qualified 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 orifice 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
IMPORTANT: IF THERE ARE ANY IGNITION
ISSUES AFTER THE NATURAL GAS TO PROPANE
(LPG) CONVERSION, CALL PENTAIR TECHNICAL
SUPPORT AT 800.831.7133.

SEDIMENT TRAPS

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 fitting 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.
Rev. C 4/2017
To Air Flow
Switch
To Gas
Valve Vent
Figure 15.
Figure 16.
ETi 400 High Efficiency Pool and Spa Heater Installation and User's Guide
Section 2: Installation Instructions
(CONTINUED)
To Gas
Valve Vent
To High Side
of Differential
Pressure Gauge
Vent
Pressure Tap
To Low Side of
Differential Pressure Gauge
18–24-in of 3/4-in
Gas line from
Valve
Union
Pressure Tap
Inlet
Manual
Shut-off
Valve
1-in (3 cm) Diameter
or larger (See
Recommended Pipe
Sizes Chart)
Bell
Reducer
At least 9-in (23 cm)
At least 3-in (8 cm)
23