FIELD WIRING / GAS CONNECTION
PART 6: FIELD WIRING
(CONTINUED)
PART 7: GAS CONNECTION
A. GAS SUPPLY
The gas supply shall have a maximum inlet
pressure of less than 14" water column (350
mm), ½ pound pressure (3.5 kPa), and a mini-
mum of 3.5" water column. The entire piping
system, gas meter and regulator must be sized
properly to prevent pressure drop greater than
0.5" WC as stated in the National Fuel Gas Code.
This information is listed on the rating plate. It is
very important that you are connected to the
type of gas as noted on the rating plate. "LP" for
liquefied petroleum, propane gas or, "Nat" natu-
ral or city gas. All gas connections must be
approved by the local gas supplier, or utility in
addition to the governing authority, prior to
turning the gas supply on.
Do not remove the
reducing coupling attached to gas valve! It is
mandatory that this fitting is used for connec-
tion to a field fabricated drip leg as shown in
the illustration at right per the National Fuel
Gas Code.
You must ensure that the entire gas line to the connection at the Phoenix Evolution is no
smaller than ¾". Once all the inspections have been performed, the piping must be leak tested. If the
leak test requirement is a higher test pressure than the maximum gas inlet pressure, you must iso-
late the Phoenix Evolution from the gas line to continue leak testing. In order to do this, you must
turn off the factory and field-installed gas cocks. This will minimize the possibility of damaging the
Phoenix Evolution gas valve.
n
WARNING
It is of extreme importance that this unit be properly grounded. It is very important that the
building system ground is inspected by a qualified electrician, prior to making this connection.
It is very important that the electrical power is only turned on when the Phoenix Evolution is
completely filled with cold water.
n
WARNING
Failure to follow all precautions in this section could result in fire, explosion or death!
UNION
DRIP LEG
Fig. 7-1
n
WARNING
Failure to isolate gas line while leak testing may damage the gas valve. In the event
the gas valve is exposed to a pressure greater than ½ PSI, 14" water column, the gas
valve must be replaced. Never use an open flame (match, lighter, etc.) to check gas
connections.
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