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OMNI by EconoHeat
Breaching Installation
The over fire draft should be minimum of -0.02 or more. Refer to Table 1 for minimum breaching
sizes. Breaching run should be as short as possible with as few elbows a practical. Unless
marginal draft conditions exist, a barometric draft control must be installed in the breaching
and should be approximately 18 inches from the boiler breaching connection. Breaching
should not project into the chimney beyond the inside wall of the chimney. Connect the
breaching to the chimney with a thimble or slip joint to facilitate cleaning. See Figure 12.
Pitch Up 1/4” per foot
Barometric Draft Control
Straight Run Preferred
18"
Installing the Boiler Controls & Accessories
1. Accessories for Boilers OWB-25:
a) Take the L-7248C Aquastat relay, the well, the pressure relief valve with pipe nipple and
the temperature/pressure gauge from the large carton. Install in taps provided at the
top rear of the boiler as shown in Figure 13.
Figure 12
Figure 13
