Brant Radiant Heaters AVS-40N Instructions Manual page 26

3.0 Installation • Gas Supply
To connect the gas:
Failure to install, operate or service this appliance in the approved manner may result in
property damage, injury or death. Only trained, qualified gas installation and service
personnel may install or service this equipment.
The installation must conform with local building codes or, in the absence of such codes, the National Fuel
Code (NFPA 54) and in conjunction with ANSI Z21.24/CSA 6.10 "Connectors for Gas Appliances".
IMPORTANT! The heating system will expand and contract during operation. Allowances for expansion
must be made between the connection to the heater and the gas supply. Excessive bending, kinks,
twists or vibration must be avoided. A flexible gas connection of approved type is required. Flexible Type 1
rubber gas connectors, or other approved connection device, installed in one plane, and without sharp
bends, kinks or twists is recommended.
The gas pipe and connection must be supported independently. Do not install gas supply line in a
manner that bears the weight of the heater. Connect the main gas supply line with an approved flexible
connector (Figure 3.19) or, if national or local codes require rigid piping, a swing joint. Heater shall not
be connected to the building piping system with rigid pipe or semi-rigid metallic tubing, including
copper. When using such material, an intermediate connection device that allows for heater expansion
must be used.
The gas outlet must be in the same room as the appliance and accessible. It may not be concealed
within or run through any wall, floor or partition. When installing the heater in a corrosive environment
(or near corrosive substances), use a gas connector suitable for the environment. Do not use the gas
piping system to electrically ground the heater.
Install a sediment trap / drip leg if condensation may occur at any point of the gas supply line. This
1
will decrease the possibility of loose scale or dirt in the supply line entering the heater's control
system and causing a malfunction. NOTE: High pressure gas above 14 Inches W.C. (water column
pressure) requires a high pressure regulator and ball valve.
Form the approved flexible connector (field supplied) into a U-shape allowing a maximum of 14 in.
2
between the flexible connector's end nuts (see Figures 3.19-3.20).
Attach the ball valve (optinal) to the gas supply pipe. Apply pipe compound to NPT adapter
3
threads to seal the joint. Use only a pipe compound resistant to LP.
NOTE: Provide a 1/8 in. NPT plugged tapping accessible for test gauge connection immediately
upstream of gas connection to the heater.
When using a Type 1 rubber flexible gas connector, do not attach the connector nuts directly to the gas
pipe supply. Connector nuts must be installed to an approved adapter.
WARNING
!
CAUTION
!
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AVS Series