Schwank STR-JZ Installation & Owner's Manual page 31

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.
WARNING
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 con-
tract. Allowances for heater expansion must be made in the gas connection, vent-
ing and combustion air ducting. Improper installation, alteration, or adjustment
can result in property damage, injury or death.
The Btuh 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.
To allow heater expansion the gas supply must be installed using:
In the USA: a stainless steel Flexible Gas Connector certified for use on an
infrared radiant tube heater (ANSI Z21.24 CSA 6.10);
in CANADA: a Type 1 Hose Connector (CAN/CGA 8.1). Also the flue vent,
and combustion air intake (if used) must be installed in such a manner that
the normal expansion of the heater will be accommodated.
IMPORTANT: See next page: orientation of connection between heater and gas supply.
TABLE 5
Input Tube
Rating Length
Btuh Feet
45,000 10
45,000 20
60,000 20 / 30
Approx. USA: Mandatory
Expansion Flexible Gas Connector
in Length ID x Length - Part #
1" 1/2" x 24" - JL-0771-XX
1 1/4" 1/2" x 24" - JL-0771-XX
1 1/2" 1/2" x 24" - JL-0771-XX
31
See also Section 13
CANADA: Mandatory
Type '1' Gas Hose
Size - Part #
1/2" x 36" - JL-0771-RC
1/2" x 36" - JL-0771-RC
1/2" x 36" - JL-0771-RC
STR-JZ I&OManual
RD: AUG 2009
IM090831
RL: 09A - BA