Pavilion GQ-C3260WXQ-FF PB US, Руководство по установке

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37
Connecting the Gas Supply
Pressure Test
The appliance and its gas connections must be leak
tested before placing the appliance in operation.
• Test at test pressures equal to or less than ½ psi
(3.5 kPa).
• The appliance must be isolated from the gas
supply piping system by closing its individual
manual shut off valve during any pressure testing
of the gas supply piping system.
• If test pressures are in excess of 1/2 psi (3.5 kPa),
the appliance and its individual shut off valve
must be completely disconnected from the gas
supply piping system during the test process.
Pressure
• Check the gas supply pressure immediately
upstream at a location provided by the gas
company.
• Supplied gas pressure must be within the limits
shown in the specifications section with all gas
appliances operating.
The inlet gas pressure must be within the range
specified.
This is for the purposes of input adjustment.
Low gas pressure may cause a loss of flame or
ignition failure at other appliances in the home,
which may result in unburned gas in the home.
Serious accidents such as fire or explosion may
result.
WARNING
Measuring Gas Pressure
In order to check the gas supply pressure to the
Water Heater, a tap is provided on the gas inlet.
1. Remove the
9/32 in. hex head
/Philips screw
from the tap.
2. Connect a manometer using a silicon tube.
3. Open up at least two fixtures with hot water
side fully.
4. Hold in the “Maximum
Burner Set Button”
on the circuit board.
Maximum
Burner Set
Button
Circuit Board
Pipe Sizing
• A gas shut off valve must be installed on the
supply line.
• Gas piping shall be in accordance with local utility
company requirements and/or in the absence of
local codes, use the latest edition of National Fuel
Gas Code (NFPA54GC), ANSI Z223.1. In Canada,
use the latest edition of CSA B149.1, Natural Gas
and Propane installation code.
• Size the gas line according to total Btu/h demand
of the building and length from the meter or
regulator so that the following supply pressures
are available even at maximum demand.
Supply Pressure
Natural Gas LP Gas
Min 3.5 in. W.C. 8 in. W.C.
Max 10.5 in. W.C. 14 in. W.C.
Flexible Connectors
Flexible gas lines are not recommended unless the
minimum inside diameter is ¾ in. or greater and
the rated capacity of the connector is equal to or
greater than the Btu/h demand of the Water Heater.
Reference Tools & Sample Calculations
The tables and samples below are for reference
only. The professional sizing and installing the
gas line should always run the appropriate
calculations before all installations.
NOTICE
[Calculation Example]
A partial set of sizing tables are printed on page 39.
In cases where these tables are not appropriate,
refer to the NFPA.
1. Draw a sketch of a piping system.
Enter the system information.
(e.g.)
Point of
delivery
Outlet A
clothes dryer
35,000 Btu/h
Outlet B
range/oven unit
75,000 Btu/h
Outlet C
water heater
199,900 Btu/h
Outlet D
furnace
100,000 Btu/h
Gas pressures below the required minimum
pressure may result in ignition failure, personal
injury or death.
WARNING