Combat HVAC ELU 100, Руководство по установке и пусконаладке, Страница: 22 / 52

Unit Heater Installation, Commissioning, Operation and Service Manual
17 18
Combat Elite Unit Heater EL231117 Orig
Tighten gas fittings to connect gas supply
according to Figure 11.
Flex gas line can crack when twisted.
Failure to follow these instructions can
result in death or property damage.
WARNING
Explosion Hazard
Leak test all components of gas piping
before operation.
Gas can leak if piping is not installed
properly.
Do not high pressure test gas piping with air
handler connected.
Failure to follow these instructions can result
in death, injury or property damage.
Gas Pipework
SECTION 10
It is important that the gas supply pipe and the electrical connections
do not support any of the heater’s weight. A gas meter is connected to
the service pipe by the gas supply company. An existing meter should
be checked, preferably by the gas supplier, to ensure that the meter is
adequate for the rate of gas required.
Installation pipes must be fitted in accordance with local and national
regulations. Pipework from the meter to the heater(s) must be of
adequate size for the maximum kW load placed upon it.
10.1 Connections
Connect the heater to the gas supply ensuring that the final connections
are as follows:
Gas supply pipework is run in medium or heavy gauge tubing in
compliance with local and national regulations.
* The gas supply pipe is adequately sized to carry the total volume
of gas for the complete installation.
* An isolating valve and union connection should be used and fitted
into the supply adjacent to the heater.
* For suspended heaters, use an approved metal flexible connection
between the isolating valve and the heater.
* To reduce pressure loss, use one pipe size larger than the heater
gas connection.
IMPORTANT – The complete installation must be purged and tested
for soundness in accordance with local and national regulations.
* Check the pipe and tubing ends for leaks before placing heating
equipment into service. When checking for gas leaks, use a soap
and water solution; never use an open flame.