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IM 970-2 • MAVERICK I ROOFTOP 14 www.DaikinApplied.com
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Customer Supplied Thermostat
The customer supplied room thermostat must be compatible
with the spark ignition control on the unit. Generally, all
thermostats that are not of the “current robbing” type are
compatible with the integrated furnace control. The low voltage
wiring should be sized as shown in
Table 9
.
Table 9: Field Wire Size for 24 Volt Thermostat Circuits
Solid Copper Wire – AWG .
3.0
2.5
2.0
16
14
12
10
10
10
16
14
12
12
12
10
18
16
14
12
12
10
50
100
150
200
250
300
Length of Run – Feet
a
a. The total wire length is the distance from the furnace to the thermostat
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. See
Figure 16
for
an example of a typical customer supplied wiring diagram.
Optional Factory Supplied
Thermostat
The optional factory supplied, touch screen, commercial
setback digital thermostat (
Figure 15
) uses microcomputer
technology to provide precise time and temperature control.
This thermostat offers the flexibility to design heating and
cooling programs that fit building needs (
Table 10
). This
thermostat is adaptable to most residential 24 volt forced air
multi-stage systems with electric or fossil fuel auxiliary and is
the ultimate for comfort, convenience, and performance. See
Figure 17
for an optional factory supplied thermostat wiring
diagram.
Figure 15: Optional Thermostat
Table 10: Optional Factory Supplied Thermostat
Specifications
Electrical Rating Single Stage:
mV to 30 V (ac), NEC Class II, 50/60 Hz
or DC
Electrical Rating Staging:
20 to 30 V (ac), NEC Class II
Terminal Load:
1.5 A per terminal, 2.5 A max. combined
Setpoint Range:
45° to 99°F (7° to 37°C)
Anticipation, Heating:
Adjustable
Anticipation, Cooling:
Adjustable
Rated Differential Single Stage:
Heat 0.6°F, Cool 1.2°F
Rated Differential Staging:
Heat 0.6°F, Cool 1.2°F
Operating Ambient:
32° to +105°F (0° to +41°C)
Operating Humidity:
90% non-condensing max.
Shipping Temperature Range:
-4° to 150°F (-20° to 65°C)
Dimensions (H × W × D):
4.6" × 5.9" × 1.2"
Table 11: Thermostat Terminal Functions
Y2
2nd Stage Compressor
Y
Compressor Relay
G
Fan Relay
RC
Power for Cooling
RH
Power for Heating
C
Common wire from secondary side of cooling (Optional). Required for
fault indication, continuous backlight operation or remote temperature
sensor operation
L
Malfunction indicator for systems with malfunction connection
W/E
Heat Relay/Emergency Heat Relay (Stage 1)
W2
2nd Stage Heat (3rd Stage Heat in HP2)
Blank
Blank
-
Common (DC) for wired remote temperature sensor
S
Frequency signal from remote temperature sensor
+
Power (DC) to remote temperature sensor