HTP Versa Hydro PHE130-119, Установка Запуск Техническое обслуживание Запасные части

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It is of extreme importance that this unit be properly grounded. Prior to making any electrical connections,
It is very important that the building system ground is inspected by a qualified electrician. Make certain
that electrical power is only turned on when the unit is completely filled with cold water.
PART 7: GAS CONNECTION
Failure to follow all precautions in this section could result in fire, explosion, or death!
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 k{a), and a minimum of 3.5”
water column (WC). As stated in the National Fuel
Gas Code, the entire piping system, gas meter, and
regulator must be sized properly to prevent
pressure drop greater than .5” WC. This
information is listed on the unit rating plate.
It is very important that you are connected to the
type of gas noted on the rating plate: “LP” for
liquefied petroleum, propane gas, or “Nat” for
natural or city gas. Prior to turning the gas supply
on, all gas connections must be approved by the
local gas supplier or utility in addition to the
governing authority.
Do not remove the reducing
coupling attached to the gas valve! Per the
National Fuel Gas Code, it is mandatory that
this fitting be used for connection to a field
fabricated drip leg as shown in the illustration
at left.
Ensure that the entire gas line to the connection at the heater is no smaller than ¾”. Once all 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 isolate the heater 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 heater gas valve.
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.
B. GAS PIPING
1. Run the gas supply line in accordance with all applicable codes.
2. Locate and install manual shutoff valves in accordance with state and local requirements.
Figure 15