Operating Sequence - Lennox G60UHV Series Installation Instructions Manual

TABLE 26
G60UHV-60D-135 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.
Return Air Options: Side return air with optional RAB return air base.
"ADJUST"
Switch
Positions
Speed Switch Positions
Second Stage "HEAT" Speed Second Stage "COOL" Speed
1 2 3 4 1 2 3 4
cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s
+ 1425 675 1615 760 1795 845 1975 930 1505 710 1620 765 1815 855 2035 960
NORM N/A N/A 1455 690 1640 775 1805 850 1370 650 1470 695 1670 790 1850 875
-- N/A N/A N/A N/A 1455 685 1630 770 1225 580 1320 625 1500 705 1670 790
"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed
Switch 1 2 3 4 1 2 3 4
Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s
+ 1305 615 1470 695 1655 780 1825 860 1075 510 1155 545 1295 610 1445 680
NORM N/A N/A 1345 635 1505 710 1670 790 980 465 1050 495 1175 555 1305 615
-- N/A N/A N/A N/A 1340 635 1475 695 875 415 935 440 1070 505 1180 555
N/A - First and second stage HEAT positions shown cannot be used on this model.
NOTES - The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% of the same second stage HEAT speed position.
First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).
Lennox Harmony Ill ' Zone Control Applications - Minimum blower speed is 495 cfm (235 L/s).
TABLE 27
OPERATING SEQUENCE
G60UHV, Thermostat with Humidity Control Feature and Single-Speed Outdoor Unit
OPERATING t
'
t .......
• S¥S EM DEMAND S¥S EM RESPONSE
SEQUENCE .
Thermostat Demand Relative Humidity
System Step I
III
Condition Y1 O G W
1 Status D
NO CALL FOR DEHUMIDIFICATION
Normal Operation 1 On On On
BASIC MODE (only active on a Y1 thermostat demand)
Normal Operation 1 On On On
Dehumidification
2 On On On On
Call
Compres-
sor
24
Acceptable VAC High
24
Acceptable VAC High
0
Demand VAC High
Blower
CFM
(COOL)
lOO%
lOO%
70%
Comments
Compressor and indoor
blower follow thermostat
demand
SignatureStat T" thermo-
stat energizes Y1 and de-
energizes D on a call for
de-humidification
PRECISION MODE (operates ind_ oendent of a Y1 thermostat demand)
Normal Operation
Dehumidification
call
Dehumidification
call ONLY
24
1 On On On Acceptable VAC High
0
2 On On On Demand VAC High
0
1 On On On Demand VAC High
Jumpers at indoor unit with a single stage outdoor unit
With Condensing unit - Cut W914 (R to DS) on SureLight board
With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight board
100%
70%
70%
Dehumidification mode
begins when humidity is
greater than set point
SignatureStat T`' thermo-
stat will try to maintain
room humidity setpoint by
allowing the room space
to maintain a temperature
that is cooler than the
room thermostat setpoint*
Thermostat used: 51M26 -- 1 heat/1 cool or 51M28 -- 2 heat/2 cool for heat pumps
*In Precision mode, SignatureStat "thermostat will allow room temperature up to 2 °F (1.2°C) cooler than room temperature
setting in order to meet humidity control demand.
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