Gs-406_ Connection Of The Impulse Lines - Johnson Controls GS Series Manual

The internal diameter of the impulse tubes for the combustion air (P
GS-406_
and the combustion chamber pressure (P
Connection of
(see Figure 4). Make the connections as short as possible and route to
the Impulse
prevent the entry of condensate into the controller. The installation of a
Lines
condensation trap in the connection line from the combustion chamber is
highly recommended. Do not close the connection for P
IMPORTANT: Avoid sharp bends or kinks in the tubing to avoid
G—UL Listed GS-20/25 and GS-40/45 Series Single-block Multi-function Gas Control Valves Technical Bulletin 7
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1/2 in. NPT Conduit
Thread Adapter
(Factory Installed)
N
GND
*
L1
N
Figure 3: Standard Wiring Electrical Connections
damage to the tubing and allow for an accurate pressure
reading.
Figure 4: Impulse Line Connections
Electrical Box
Connection
GND
L1
*
Wiring Connections
N = Common
L1 = Line
GND = Earth Ground*
(* Do not connect earth ground for 24 VAC models.)
) should be 4.0 mm (5/32 in.)
F
P P
F A
)
A
if not used.
F