Gas Supply & Connection - Schwank P40U Owner's Manual

Optional 4 inch intake terminals are available for this heater:

Part number: JS-0532-VC Wall mount, bird-screened fresh air intake duct hood

Part number: JS-0530-XX Roof cap
Ensure adequate clearance around the air intake to allow sufficient combustion air supply to
the heater. If drawing fresh air from outside, it is recommended that any single wall pipe con-
taining cold air be insulated to prevent or reduce condensation on the pipe.
Do not use flexible dryer hose or any 'soft wall' tubing for air inlet duct, the soft corrugated
sides of this tubing restrict air flow. A good quality industry approved insulated flex is allowed.
CAUTION: In locations where chlorinated Hydrocarbons are in use, such as Trichloroethyl-
ene or Chloroethylene Nu it is essential that combustion air be brought in from
a non-contaminated area. Burning the fumes from these gases will create Hy-
drochloric acid fumes, which are detrimental to humans, equipment and build-
ings. Typical sources of other contaminants are paint removers, paints, refriger-
ants, solvents, adhesives, degreasers, lubricants, pesticides, etc.
The heater manufacturer cannot anticipate all chemical compositions and types of
potential contaminants at project sites. Confer with project site safety, health and
engineering staff and/or local authorities having jurisdiction such as the Fire Mar-
shall and Department of Labor for possible contaminants and any conflict with the
installation of hot surface heating equipment.
11.
GAS SUPPLY - GAS CONNECTION - HEATER EXPANSION
CAUTION: Compensation for expansion of gas supply pipe and radiant tube
heater must be provided. All piping must conform to local and national codes.
This heater will expand up to 1 inch (2.5 cm) in length during operation. To
allow for heater expansion the gas supply must be connected using the flexible
gas connector that is supplied with this model heater:

In the USA: a 1/2" x 24" stainless steel Flexible Gas Connector certified for use on an in-
frared radiant tube heater (ANSI Z21.24 CSA 6.10);

in CANADA: a 1/2" x 36" (±6") Type 1 Gas Hose Connector (CAN/CGA 8.1).
IMPORTANT: See page 24: Orientation of connector between heater and gas supply.
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.
Provide a 1/8 in (3.2 mm) NPT plugged tapping, accessible for test gauge con-
nection, immediately upstream of the gas supply connection to the heater.
The supply system should be checked first with heater turned "OFF" followed by another check
with heater turned "ON".
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P40U-F / P40U-IF I&O Manual
IM101220
RD: MAR 2014
RL: 4B