Energy Tech Laboratories RSIB 300-500 Blower User Manual


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3002503 11.06
4.4 Installing a Proven Draft Switch
A safety system must be interlocked with the appliance. The safety system could utilize a Proven Draft Switch
(PDS-1),athermalswitch,aowswitchorasailswitch.Thedevicemustbeinterlockedwiththeheating
appliance(s)soitshutsdownincaseofinsufcientdraft,fanfailureorpowerfailure.Pleasereferto
the PDS Installation Manual for wiring instructions.
If the installation includes an EBC12 or EBC 30 Fan Control, a PDS-1 is not required as the function is
integrated in the control.
For more information about alternative safety system, please consult EXHAUSTO.
4.5 Installation of Stack Probe for PDS Function
Install the probe for the Proven Draft Switch (PDS-1) in the vent connector. The probe must be located between the
appliance and the power venter. The probe must be located at least 3 vent diameters downstream of the draft
hood, draft diverter, or barometric damper. The probe placement should also observe distances from elbows and
Teesasshowningurebelow.ThetipoftheprobeMUSTbeushwiththeinnerchimneywallto
get a proper pressure reading.
Fig. 12
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