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

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SECTION 20: S
EQUENCE OF
O
PERATION
103 of 198
This option pro v ides a ser v ice receptacle. It incl u des
gro u nd-fa u lt interr u pter (GFI) receptacle (mo u nted on
the air handler). Po w er to the receptacle is s u pplied
b y a 7A po w er so u rce from the air handler itself.
20.7.14 UL-Listed Flame Control Panel
This option pro v ides for the air handler's control
panel to b e bu ilt to Under w riters La b oratories (UL)
standards. It incl u des an UL la b el on the control
panel.
20.7.15 Filter Gau g e
The air filter ga u ge ( u nit mo u nted) meas u res
press u re drop across the filter for the p u rpose of
determining w hether or not the filter is operating
w ithin its design range of effecti v e u tilization.
20.7.16 Carbon Dioxide Detector
All air handlers that recirc u late air from the heated
space req u ire the u se of a room car b on dioxide
sensor w hich is set to maintain a CO2 concentration
b elo w 5,000 ppm. (Shipped loose for field
installation)
20.7.17 Carbon Monoxide Detector
This is a ship loose sensor that monitors the CO
le
v els in the space. It can either so u nd an alarm and/
or control the f u nction of the air handler in the e v ent
its threshold set point is exceeded.
20.7.1 8 Proof of Closure Valve
This is a cali b rated v al v e that is tied into the control
system of the bu rner. It does not allo w the bu rner to
b egin the ignition cycle if it is not in the closed
position.
20.7.19 Electronic Space Pressure Control
This is a solid state controller that monitors the space
ser
v iced b y the air handler and a reference point
( u s u ally o u tside the str u ct u re) for press u re
differential. It maintains the selected press u re set
point b y v arying the o u tp u t of airflo w from the handler
u sing v ario u s options.