McQuay IM 987 13
Introduction
SPS2
Static pressure
sensor duct #2
Converts static pressure
signals to voltage signals
and sends them to
MicroTech III controller
N/A
Main control
box
N/A
0–5" wc
(0–1245.4 Pa)
1–6 V (dc) out
N/A 049545007
Static pressure
sensor: building
(space) pressure
Converts static pressure
signals to voltage signals.
N/A
Main control
box
N/A
-025–0.25" wc
(-62.3–62.3
Pa)
1–5 V (dc) out
N/A 049545006
S1
System switch
Shuts off entire control circuit
(except crankcase heaters)
N/A
Main control
box
N/A N/A N/A 001355000
S7
ON-OFF-AUTO
switch
Used to manually switch unit
N/A
Main control
box
N/A N/A N/A
Table 2: Controls, Settings, and Functions (continued)
Symbol Description Function Reset Location Setting Range Differential Part no.
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