Thermostat; Indoor Air Flow Data; Pre-Start Check; Startup - McQuay Maverick I MPS006AY Installation And Maintenance Manual

GROUNDING MAY BE ACCOMPLISHED BY GROUND-
ING THE POWER LINE CONDUIT TO THE UNIT. MAKE
SURE THE CONDUIT NUT LOCKING TEETH HAVE
PIERCED THE INSULATING PAINT FILM OF THE SIDE
PANEL.

Thermostat

The thermostat should be mounted on an inside wall about
five feet above the floor in a location where it will not be
affected by unconditioned air, sun, or drafts from open doors
or other sources. READ installation instructions in thermostat
package CAREFULLY because each has some different
wiring requirements. The low voltage wiring should be sized
as shown in Table B.
Table C
FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS
SOLID COPPER WIRE - AWG.
3.0 16 14
2.5 16 14
2.0 18 16
50 100
Length of Run – Feet (1)
(1) The total wire length is the distance from the furnace to the thermo-
stat and back to the furnace.
NOTE: DO NOT USE CONTROL WIRING SMALLER THAN NO. 18
AWG.
Install the room thermostat in accordance with the instruction
sheet packed in the box with the thermostat.
Figure 14: Low Voltage Connections Diagrams
THERMOSTAT
IM 865
12 10 10
12 12 12
14 12 12
150 200 250
STANDARD CONTROL WIRING
SUB-BASE
R
W
G
Y
Y2
C

Indoor Air Flow Data

Belt-drive blower models have motor sheaves set for proper
CFM at a typical external static. See Table F for blower per-
formance.

Pre-Start Check

1 Is unit properly located and slightly slanted toward indoor
condensate drain?
2 Is ductwork insulated, weatherproofed, with proper spac-
ing to combustible materials?
3 Is air free to travel to and from outdoor coil? (See Figure
5.)
4 Is the wiring correct, tight, and according to unit wiring
diagram?
5 Is unit grounded?
6 Are field supplied air filters in place and clean?
10
7 Do the outdoor fan and indoor blower turn freely without
10
rubbing, and are they tight on the motor shafts?
10
300

Startup

1 Turn thermostat to "OFF," turn "on" power supply at
disconnect switch.
2 Turn temperature setting as high as it will go.
3 Turn fan switch to "ON."
4 Indoor blower should run. Be sure it is running in the
right direction.
UNIT CONTROLS
WIRE PIGTAILS
RED
BLACK
GRAY
YELLOW
ORANGE
BROWN
13