ECR International 75 Installation, Operation & Maintenance Manual page 45

13-1 Differential Air Pressure Switch
Connect manometer to Air Pressure Switch tubing (see
fi gure 13-2). Follow operating instructions to initiate boiler
operation. Refer to Trouble Shooting Tree page 46.
DANGER
!
Replace all test port caps. Failure to comply will
result in death or serious injury.
13-2 Test Port Locations
13 - TROUBLE SHOOTING
Analyzer Port
Combustion
Analyzer
Test Port
Vinyl Tubing
Silicone Tubing
Test Port
Combustion
Test Lines
+
Test Port
In-line Pressure
Switch Vapor
Collector
45
Differential Air
Pressure Switch
Vinyl Tubing
Vinyl Cap
(Typ. 2)
-
Inclined Manometer
(Or Differential Pressure Gauge)
Tee