Weather-Rite TT Series, Инструкция по установке, эксплуатации и обслуживанию

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SECTION 24: S
TART
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UP
P
ROCEDURES
131 of 198
FIGURE 115: Maxitrol M611 Valve
24.6 Safety Shut Off Valve Check
After the initial start u p and gas press u re adj u stment,
v erify gas so u ndness of each SSOV (Safety Sh u t Off
Val v e). This check m u st b e repeated after the first
100 ho u rs of operation.
24.7 Air Volume Control
24.7.1 Volumatic Dampers
• Air handler can b e r u nning in either the s u mmer
or w inter mode of operation.
• Set the damper position controller to highest
airflo w req u irement. Discharge dampers w ill dri v e
to f u ll open position.
• Press u re drop across bu rner sho u ld remain sta b le
d u ring all settings of the damper position
controller.
• Set the damper position controller for lo w est
airflo w position (discharge damper w ill dri v e to its
minim u m position) and take air press u re drop
readings across bu rner profiles.
• If b elo w recommended setting, decrease the
profile linkage range of tra v el w itho u t altering the
f u ll airflo w position. If a b o v e setting, increase the
profile linkage range. See Page 125, Section
24.4.2.1 .
• Recheck air press u re drops across bu rner on high
and lo w airflo w settings.
• Minim u m air damper position controller is factory
set and sho u ld not b e adj u sted u nless specifically
directed to do so b y the factory.
24.7.2 Volumatic Variable Fre q uency Drive
• Air handler can b e r u nning in either the s u mmer
or w inter mode of operation.
• Set the VFD to highest airflo w req u irement.
• Press u re drop across bu rner sho u ld remain sta b le
d u ring all settings of the damper position
controller.
• Set the VFD for lo w est airflo w position and take
air press u re drop readings across bu rner profiles.
• If b elo w recommended setting, decrease the
profile linkage range of tra v el w itho u t altering the
f u ll airflo w position. If a b o v e setting, increase the
profile linkage range. See Page 125, Section
24.4.2.1 .
Low Fire Adjustment
(under cap)
Gas Inlet
Gas Outlet