McQuay SWP Series Installation And Maintenance Manual page 19

Self-contained air conditioning system, vintage sizes 018 through 105, microtech iii unit controller
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ID
Description
PC5
Pressure control, clogged filter
PC7
Pressure control, proof airflow
PB10
Power block, supply fan
PVM1, 2
Phase voltage monitor
R1–6
Relay, compressor high
pressure
R62, 63, 65
Relay, use on specials
R70–79
Relay, use on specials
RAT
Return air temperature sensor
S1
Switch, system on/off
S4
Switch, VFD bypass, on/ off
S7
Switch, local on/auto/off to
controller
SPS1, 2
Static pressure sensors, duct/
building
PSR1, 2
Pressure transducer, head
pressure control
T1
Transformer, main control (line/
115 V (ac))
T2
Transformer, control input (115/
24 V (ac))
T3
Transformer, control output
(115/24 V (ac))
T4
Transformer, UV lights
TB1
Terminal block, internal
TB2
Terminal block, field, Class 2
TB3
Terminal blocks, factory
TB4
Terminal block, field, 115 V (ac) Main control box
McQuay IM 937
Standard
location
Main control box
UV
Main control box
VM1
Main control box
ZNT1
Main control box
Main control box
Main control box
1.
Main control box
Main control box
Main control box
2.
Main control box
Keypad
3.
Main control box
4.
Condenser section
5.
Main control box
Main control box
6.
Main control box
Main control box
7.
Main control box
Main control box
8.
Main control box
9.
ID
Description
Ultra-violet light(s)
Valve motor #1, heating
Zone temp. sensor, setback
General Notes
200/ H200
WN7
Electrical Data
Standard
location
Coil/discharge
section
Heat section
Field installed
Field wiring
Factory wiring
Shielded wire/cable
Main control box
terminals
Auxilliary box
terminals
Field terminals
Plug connector
Wire/harness number
Wire nut/ID
19

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