Gas Control Valve Replacement Kit Information; Function - Pentair ETi 400 Installation Manual

6
INSTRUCTIONS FOR CHECKING THE GAS PRESSURE THROUGH THE
COMBINATION GAS CONTROL VALVE.
Risk of fire and explosion. Improper installation, adjustment, alteration, service, or
maintenance of the Combination Gas Control Valve can lead to fire or explosion,
causing loss of life, personal injury, or property damage.
These instructions are for the use of qualified service technicians only!
Do not attempt this procedure unless you have been trained and certified in the care
and repair of gas-fired appliances!
Do not attempt this procedure if you are not confident about following instructions!
This appliance is equipped with an unconventional gas control valve that is factory set
with a manifold pressure of –.2" wc. Installation or service must be performed by a
qualified service technician or the gas supplier. If this control valve is replaced, it must
be replaced with an identical control.
Before converting the heater, make the necessary gas connections to the
NOTICE:
new gas supply, following the instructions in the ETi
Installation and User's Guide. Verify the maximum and minimum regulated gas pres-
sures from the gas

Gas Control Valve Replacement Kit Information

Function

The Combination Gas Control Valve incorporates dual gas shut-off valves and a
negative-pressure regulator. The negative-pressure regulator controls the outlet pres-
sure to slightly below the reference pressure supplied to the regulator diaphragm by
the vent line. For proper operation, the regulated pressure at the outlet manifold of the
valve must be 0.2" wc below the reference pressure, and the gas "vent" tap must be
connected to the Mixer inlet.
ETi 400 Hight Efficiency Heater Gas Control Valve Replacement Kit Installation Guide
400 High Efficiency Heater
®