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036-21618-003 Rev. A (1205)

Unitary Products Group

7

For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at
www.upgnet.com in the Product Catalog Section.

Thermostat Chart

AC1

Single Stage A/C w/Single Stage Furnace, 1 Stage Cooling Ready - (G,L)*8/9S, XYF80-U, XYF80-U*L, XYF90-U

HM1

Humidistat

Thermostat Installer Setup Number 1 - 

System Type - must be set to 0

Selection of GAS/ELEC switch 

on thermostat not necessary

Thermostat Installer Setup Number 15 - 

Compressor Protection - must be set to 5

24V HUMIDIFIER

G

Fan

G

Fan

G

Fan

G

Fan

W

First Stage Heat

W

First Stage Heat

W

First Stage Heat

W

Single Stage Heat

RC

24-Volt Hot (Cool XFMR)

RC

24-Volt Hot (Cool XFMR)

RC

24-Volt Hot (Cool XFMR)

R

24-Volt Hot (Heat XFMR)

RH

24-Volt Hot (Heat XFMR)

RH

24-Volt Hot (Heat XFMR)

R

24-Volt Hot

C

24-Volt Common

C

24-Volt Common

Y

First Stage Cool

Y

First Stage Cool

Y

First Stage Cool

Y/Y2

Single/Second Stage Cool

Y

Single Stage Cool

*DN11C00124

C

24-Volt Common

C

24-Volt Common

Optional w/Batteries

*BN11C01124

*DP11C40124

PSC

FURNACE CONTROL

SINGLE STAGE

AIR CONDITIONING

*BN11C00124

*BP11C50124

*PP11C70224

THERMOSTAT

THERMOSTAT

THERMOSTAT

HP1

W/031-01975- Series Demand Control

Single Stage H/P - E*RD, E*BD, ERHS, HPX13 - w/Single Stage Furnace, 1 Stage Cooling Ready - (G,L)*8/9S, XYF80-U, XYF80-U*L, XY

F90-U

SINGLE STAGE

HEAT PUMP

*DN22U00124

*BP21H50124

*PP32H70124

THERMOSTAT

THERMOSTAT

THERMOSTAT

PSC

FURNACE CONTROL

*BN21H00124

*DP21H40124

*DN21H00124

N/A

N/A

C

24-Volt Common

R

24-Volt Hot

E

Emergency Heat

O

Reversing Valve–Energized in Cool

C

24-Volt Common

C

24-Volt Common

Y

First Stage Heat/Cool

Y/Y2

Single/Second Stage Cool

Y

Single Stage Heat/Cool

R

24-Volt Hot

R

24-Volt Hot

W1

Second Stage Heat

W

Single Stage Heat

W1/66

First Stage Heat Out

G

Fan

G

Fan

W

First Stage Heat

Step 1 of Thermostat User Configuration Menu 

must be set to Heat Pump 1

Step 9 of Thermostat User Configuration Menu 

must be set to Pump OFF

O

Reversing Valve–Energized in Cool

L

Malfunction Light

X/L

Malfunction Light

Summary of Contents for LY8S

Page 1: ...units are Category I listed and may be common vented with another gas appliance as allowed by the National Fuel Gas Code WARRANTY 20 year limited warranty on the heat exchanger 10 year heat exchanger...

Page 2: ...FM Cabinet Size Cabinet Dimension A B C D G L Y8S040A12UH11 1200 A 14 1 2 13 1 4 10 1 8 10 1 8 G L Y8S060A12UH11 1200 A 14 1 2 13 1 4 10 1 8 10 1 8 G L Y8S080A12UH11 1200 A 14 1 2 13 1 4 10 1 8 10 1 8...

Page 3: ...55 G L Y8S100B12UH11 100 80 17 1 2 1200 12 0 80 0 40 70 G L Y8S100B16UH11 100 80 17 1 2 1600 12 0 80 0 35 65 G L Y8S100C20UH11 100 80 21 2000 14 0 80 0 25 55 GY8S115C16UH11 115 92 21 1600 12 0 80 0 3...

Page 4: ...2060 2000 1970 1840 1730 1680 1570 1460 1260 Medium Low 1720 1700 1670 1620 1570 1500 1430 1310 1160 1000 Low 1410 1390 1360 1330 1280 1220 1170 1060 930 840 G L Y8S100B12UH11 High 1700 1620 1560 1480...

Page 5: ...60 2010 1860 1650 Medium High 2110 2110 2070 2030 1980 1910 1850 1710 1570 1300 Medium Low 1690 1690 1650 1610 1540 1480 1410 1280 1170 1030 Low 1350 1330 1310 1290 1260 1220 1150 1050 970 860 G L Y8S...

Page 6: ...r this require the use of high velocity filters 2 Air flows above 1800 CFM require either return from two sides or one side plus bottom FILTER SIZES CFM Cabinet Size Side in Bottom in 1200 A 16 x 25 1...

Page 7: ...ge Cool Y Y2 Single Second Stage Cool Y Single Stage Cool DN11C00124 C 24 Volt Common C 24 Volt Common Optional w Batteries BN11C01124 DP11C40124 PSC FURNACE CONTROL SINGLE STAGE AIR CONDITIONING BN11...

Page 8: ...m3 min Subtract the airflow 0 50 w c 125 Pa from the airflow 0 60 w c 150 Pa to obtain airflow difference 1180 1250 70 CFM 12 m3 min Subtract the total system static from 0 50 w c 125 Pa and divide t...

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