Raypak 88AR-398A, Инструкция по установке и эксплуатации

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Fig. 16: Gas Supply Connection
CAUTION: Do not use Teflon tape on gas line pipe
thread. A pipe compound rated for use with natural
and propane gases is recommended. Apply
sparingly only on male pipe ends, leaving the two
end threads bare.
CAUTION: Support gas supply piping with
hangers, not by the boiler or its accessories. Make
sure the gas piping is protected from physical
damage and freezing, where required.
Gas Supply
Gas piping must have a sediment trap ahead of the
boiler gas controls, and a manual shut-off valve lo-
cated outside the boiler jacket. It is recommended that
a union be installed in the gas supply piping adjacent
to the boiler for servicing. Refer to Table J for maxi-
mum pipe lengths.
Gas Supply Connection
The boiler must be isolated from the gas supply pip-
ing system by closing the upstream manual shut-off
valve during any pressure testing of the gas supply
piping system at test pressures equal to or greater
than 1/2 PSI (3.45 kPa). Relieve test pressure in the
gas supply line prior to re-connecting the boiler and its
manual shut-off valve to the gas supply line. FAIL-
URE TO FOLLOW THIS PROCEDURE MAY
DAMAGE THE GAS VALVE. Over-pressurized gas
valves are not covered by warranty. The boiler and its
gas connections shall be leak-tested before placing
the appliance in operation. Use soapy water for leak
test. DO NOT use an open flame.
DANGER: Make sure the gas on which the unit will
operate is the same type as specified on the rating
plate.
CAUTION: The boiler must be disconnected from
the gas supply during any pressure testing of the gas
supply system at test pressures in excess of 1/2 PSI
(3.45 kPa).
Maximum Equivalent Pipe Length
N: Natural Gas 1000 BTU/FT٨3 .60 Specific Gravity @ 0.5” WC pressure Drop
P: Propane Gas 2500 BTU/FT٨3 1.53 Specific Gravity @ 0.5” WC pressure Drop
Model
Input
(KBTU)
1/2” 3/4” 1” 1-1/4” 1-1/2”
N P N P N P N P N P
88AR
88 35 75 135 305 440 990
108AR
110 20 50 90 205 290 720 1045
198AR
199 15 30 65 95 220 365 880 830
278AR
275 15 35 50 120 205 460 425 980
398A
399 20 25 60 100 230 220 485
Table J: Maximum Equivalent Pipe Length