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Typical Wiring (Field Supplied)
for 1-Stage Cool, 1-Stage Heat
Typical Wiring (Field Supplied)
for 2-Stage Cool, 1-Stage Heat
Figure 10. Typical Thermostat Connection
E
O
G
R
Y1
1
2
3
4
5
6
7
8
9
Blue
ECONOMIZER
PLUG
INDOOR
THERMOSTAT
SUB-BASE
Green
FROM
BLOWER
RELAY
(Optional,Check
Thermostat
Instructions)
Y2
W2
W3
X
E
R
W2
O
Y
C
DEFROST
BOARD
E
O
G
R
Y1
1
2
3
4
5
6
7
8
9
Blue
ECONOMIZER
PLUG
INDOOR
THERMOSTAT
SUB-BASE
Green
FROM
BLOWER
RELAY
(Optional,Check
Thermostat
Instructions)
Y2
W2
W3
X
E
R
W2
O
Y
C
DEFROST
BOARD
External Static Pressure Drop - inches water column
Model Speed 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Q4SA-036 High 1600 1510 1410 1310 1200 1070 930 760
Medium 1410 1330 1250 1150 1050 940 820 670
Low 1130 1070 1000 930 850 760 650 530
Q4SA-048 High 2200 2140 2070 2000 1930 1850 1770 1690
Medium 1940 1890 1830 1760 1700 1630 1560 1490
Low 1560 1510 1460 1410 1360 1310 1250 1200
Q4SA-060 High 2200 2140 2070 2000 1930 1850 1770 1690
Medium 1940 1890 1830 1760 1700 1630 1560 1490
Low 1560 1510 1460 1410 1360 1310 1250 1200
- Speed set at factory
Table 1. Q4 Blower Curves