
Refer to manufacturer’s instruction for the required draft for
the appliance
.If the barometric damper is placed within 3 feet of
the appliance outlet, the typical draft setting would be between
-0.02”-0.08” wc.
Not following these instructions may prevent the barometric
damper from operating properly. This may disrupt the
combustion process of the appliance.
Start-Up (functional test)
After installing and setting the ba rometric draught regulator
verify the blade moves easily on the bearings. To do this, pull
the control wheel down manually and let it go to verify that
the blade swings back into position.
After setting the draught
regulator,
operate the appliance to verify that
the draft setting
is correct and
flue gas does not spill into the occupied space.
If the draught regulator is installed properly and set per
appliance manufacturers requirements, it will run
flawlessly increasing efficiency and reducing standby
losses in firing systems.
Maintenance
The KW Barometric Dampers require virtually no maintenance.
Check on a regular basis to ensure dust does not accumulate
on the bearing. If necessary (before the heating period begins),
the bearings can be lubricated with a
drop of non-resinous oil
Do not lubricate or grease the bearings excessively since
this only increases the build-upof sediments.
Ifdirt or soot has set onthe control wheel,it needs tobe
removed
carefully to maintain the accuracy of the barometric damper.
Safety
Barometric dampers should only be connectedtonon-
positive pressure appliances. Non-positivepressure
appliances include gas, oil, and solid fuel appliances.
Barometric Dampers shall be installedin thesameroom as
the applianceit is serving.
Warning:
Install barometric dampers in accordance with
local and national codes which may include ANSI
Z223.1 (NFPA 54), NFPA 31, NFPA 211
Ifa flue gas silencer isused,the barometric damper
shouldbe
installeddownstream astheremaybepositive pressurein
theconnectorpipeupstreamof thesilencer.
Installation
Insert thebarometric damper intothe connector tee with the
control wheel in the vertical axis. Now adjust the barometric
damper carefully withan air level (fig. 2, axis of control wheel
horizontal, frame and control wheel vertical). Now fasten the
barometric damper by tightening theclamping screw (fig. 1).
Setting the Nominal Value (required draft)
Thedefault settingfortheKWBarometric Draft Regulator is the
highest setting. Therequired draft forthe fireplace is setby
turning thecontrol wheel (fig. 3). The measure "a"in inches
corresponds to the draft in inches WC. After setting thecontrol
wheel, itshould belocked inposition. Turn the locking nut
clockwise to unlock the control wheel (fig. 1).
Technical Data
Model ZUK 130 ZUK 150 ZUK 150-S ZUK 180
max. flue gas temperature (DIN 1860)
750 °F 750 °F 750 °F 750 °F
Settingrange (required draft in neg.pressure)
0.04–0.10” 0.04–0.14” 0.04–0.14” 0.04
–0.24”
Air flow rate at
∆
p 0.02” wc 45 CFM 80 CFM 80 CFM
110 CFM
Airflow rate at ∆p0.08” wc 75 CFM 130 CFM 130 CFM
160 CFM
Airflow rate at ∆p0.16” wc 95 CFM 175 CFM 175 CFM 210 CFM
Responsepressureofpressurerelief valve
> 0.40” wc > 0.40” wc ------ > 0.40” wc
max. open cross-section pr. relief valve
10 in
25.25 in2 ------ 5.25 in2
Air flow rate as combined sec.-air
appliance at ∆p 0.08” wc > 60 CFM
------ > 130 CFM >120 CFM
The air flow rates given for
∆
p refer to the negative static pressure above the set point of the barometric damper.