Schwank SEB(U) - Manual (Page 18)

SP-MSEB-BX-10A
SEB Manual
RD: JUNE 2004
RL: 10
KH
Page 14
DO NOT use pressures greater than 1/2 psig.
to pressure check the heater.
TEST FOR LEAKS: All gas piping and
connections must be tested for leaks after the
installation is completed.
Apply soap suds 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 THE HEATER
WITH LEAKING CONNECTIONS.
The supply system should be checked first
with heater turned "OFF" followed by
another check with heater turned "ON".
IMPORTANT:
The minimum supply-line pressure
at the inlet to the heater regulator
must not, in any instance, be lower
than 5.5 inches of water column
pressure for natural gas and 11.0
inches of water column pressure for
propane gas. The gas supply line
pressure must be checked with all
the heater(s) operating.
TABLE 5
GAS TYPE LINE PRESSURE
INCH WATER COLUMN
MINIMUM MAXIMUM
MANIFOLD PRESSURE
INCH WATER COLUMN
AT-TAP IN GAS VALVE
Natural Gas
Propane 5.5 14.0
11.0 14.0 3.5
10.0
NOTE: Access to the manifold pressure test
port is on the top of the valve. A 3/16" Allen
Wrench is necessary to check this. When
checking or setting the manifold pressure, a
water manometer should be used. Gauges which measure in ounces per square inch
or pounds per square inch are not accurate
enough to properly measure or set the
pressure. PLEASE SEE NEXT SECTION
ON HEATER EXPANSION.
SEE SECTION 13: (PAGE 15) HEATER EXPANSION
CAUTION:
If rigid gas pipe connection is made, compensation for normal gas supply
pipe expansion and radiant tube expansion must be provided. All piping
must conform to local codes.