Gasmac GARAGEMAC GM-40S, Инструкция по установке и эксплуатации

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18
WARNING
HEATER EXPANSION
Consider that the heater will expand in length as much as ½ inch (12.5 mm) or more
for every 10 ft (3 m) of system length. In general, the greater the appliance firing
rate, the greater the rate of expansion.
This heater will expand in length as it heats up. It is a normal condition that during
heat-up and cool-down a tube heater will expand and contract. Allowances for
heater expansion must be made in the gas connection, venting and combustion air
ducting. Improper installation, alteration, or adjustment can result in property
damage, injury or death.
The BTU input and the tube length determine the overall expansion that occurs. A
typical infrared tube installation will expand toward both the burner and the vent end.
Compensation for normal gas supply pipe expansion and radiant tube heater
expansion must be provided. All piping must conform to local codes.
Provide a 1/8 in (3.2 mm) NPT plugged tapping, accessible for test gauge
connection, immediately upstream of the gas supply connection to the heater.
Test for leaks. All gas piping and connections must be tested for leaks after the
installation is completed.
The heater must be isolated from the gas supply piping system by closing its
individual manual shut off valve (field supplied) during any pressure testing of the
gas supply piping system.
Apply soap solution to all connections and joints and if bubbles appear, leaks have
been detected and must be corrected. Do not use a match or open flame of any kind
to test for leaks. Never operate a heater with leaking connections.
The gas supply system should be checked first with the heater turned off followed by
another check with the heater turned on.
IMPORTANT
: To ensure adequate gas supply pressure at maximum potential
load, the supply gas pressure must be checked at all appliances when all heaters,
as well as any other gas appliance that is drawing from the same system, are ignited
and operating.