SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
21
Stage 3 – Gas Supply Connection
CAUTION
Gas piping installation MUST comply with all local codes and regulations.
Gas pressure to the humidifier MUST never exceed 6kPa (60 mbar).
A manual shut off valve (not supplied) MUST be installed on the gas supply line to
the humidifier. Ensure adequate size for the gas supply line (see below table).
A DN6 (1/8’’ BSP) plugged tapping for test pressure gauge connection must be
installed immediately upstream of the gas supply line.
Pressure tapings for test gauges must be located at the Gas valve.
Pipes must be inspected for dirt and chips after threading and reaming the end of
pipes.
Gas piping installation must be supported to avoid mechanical strain/stress.
Two wrenches must be used when connecting gas piping to the humidifier.
Drip pocket must be provided at any low spot in the gas line.
Minimum gas pipe gradient must be 1.5mm in 1000mm horizontal run.
Air purge must be done by disconnecting piping at the gas valve.
Air purge MUST NOT be done at the heat exchanger of the humidifier.
After installation, field piping and humidifier gas train must be checked for leaks.
Do not use soap solution or open flame on the humidifier gas train. A gas leak
detector must be used.
All leaks MUST be sealed prior to commissioning the humidifier.
Gas Pipe
Diameter
Model
Gas
Connection size
SKGE3-
0501, 0701, 0801, 1001
1202, 1502, 1702, 2002
1’’ BSPT
Female
SKGE3-
2503, 2703, 3003
3504, 3704, 4004
1-
1/2’’ BSPT
Female
Please refer to local codes and regulations regarding the type and volume of gas handled, in
order to obtain the pressure drop allowed in the gas line and to determine gas pipe diameter.
When multiple SKGE3 humidifier modules are installed, consideration must be taken to total
capacity, gas flow and length of main.
Gas supply connection - Fig. 30
Gas Leak Test
Pressure testing of the gas supply piping must be performed by the gas Installer in
accordance with local codes and regulations.
Test pressure must be relieved from the gas piping system prior to opening the
manual shut off valve of the humidifier.
For any test pressure over 350kPa (3.5 bar), the humidifier MUST be disconnected
(at the gas shut off valve).
Gas supply pressure at the inlet pressure tap, when all burners are running, must be:
1.75kPa (17.5 mbar) for Natural Gas.
3.5 kPa (35 mbar) for Propane and Butane.
!
G
A
S
L
IN
E
D rip p o c k e t
¼ tu rn g a s
v a lv e
O p tio n a l D N 6 (1 /8 '
’
B S P ) P lu g g e d
ta p in g fo r te s t
p re s s u re g a u g e
S K G E 3
All manuals and user guides at all-guides.com
