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272312-UIM-A-0407

Unitary Products Group

FIGURE 9:

Thermostat Chart - AC

AC9

2 Stage Scroll A/C w/2 Stage Furnace, 2 Stage Cooling Ready- PT8/9; (F,L)*8/9T, (G,L)*8/9T, XYG8S-U, XYF8S-U / XYF8S-U*L

THERMOSTAT

*DP22U70124

24-Volt Common

Thermostat Installer Setup

Number 15 - Compressor

Protection - must be set to 5

Second Stage Cool

Second Stage Heat

24-Volt Hot

24-Volt Common

First Stage Cool

24-Volt Common

24-Volt Hot

First Stage Cool

24-Volt Common

First Stage Cool

Comfort Alert

Interface

24V HUMIDIFIER

(Optional)

24-Volt Hot

Fan

24-Volt Hot

Second Stage Heat

E/W1

First Stage Heat

Second Stage Heat

Step 1 of Thermostat User

Configuration Menu must be

set to MS 2

Step 16 of Thermostat User

Configuration Menu must be set

to ON to use Comfort Alert

Features

Humidistat

Malfunction Light

E/W1

First Stage Heat

Fan

Connection of the "C" Termainal,

24-Volt Common, is optional

when used with batteries

Thermostat Installer Setup

Number 1 - System Type -

must be set to 6 -

2 Heat/2 Cool Conventional

24-Volt Hot (Heat XFMR)

Second Stage Heat

24-Volt Hot (Cool XFMR)

E/W1

First Stage Heat

Fan

*DN22U00124

THERMOSTAT

Second Stage Cool

First Stage Cool

Second Stage Cool

Y/Y2

Single/Second Stage

Cool

First Stage Cool

Connection of the "C"

Termainal, 24-Volt Common,

is optional when used with

batteries

2 STAGE PSC

FURNACE CONTROL

TWO STAGE

AIR CONDITIONING

*DN22C00124

*PP32U71124

THERMOSTAT

*PP32U72124

THERMOSTAT

Step 1 of Thermostat User

Configuration Menu must be set

to MLTI STG

W/W1

Single/First Stage Heat

24-Volt Common

THERMOSTAT

*PP32U70124

Thermostat Installer Setup

Number 0170 - System Type -

must be set to 8 - 2 Heat/2 Cool

Multistage Conventional

First Stage Cool

Second Stage Cool

24-Volt Hot (Heat XFMR)

24-Volt Hot (Cool XFMR)

Fan

Second Stage Heat

Connection of the "C"

Termainal, 24-Volt Common,

is optional when used with

batteries

E/W1

First Stage Heat

Second Stage Heat

Fan

Connection of the "C" Termainal,

24-Volt Common, is optional

when used with batteries

Содержание AHT8-UH

Страница 1: ...RING DIAGRAM 30 LIST OF FIGURES Dimensions 6 Typical Attic Installation 7 Typical Suspended Furnace Crawl Space Installation 7 Side Return Cutout Markings 8 Gas Valve 8 Upflow Gas Piping 8 Horizontal...

Страница 2: ...s from combustible materials as listed under Clearances to Combustibles in Table 1 Provide clearances for servicing ensuring that service access is allowed for both the burners and blower These models...

Страница 3: ...d Never store items such as the following on near or in contact with the fur nace 1 Spray or aerosol cans rags brooms dust mops vacuum cleaners or other cleaning tools 2 Soap powders bleaches waxes or...

Страница 4: ...t the specified external static pressure and within the air temperature rise specified on the nameplate Table 2 is a guide for determining whether the rectangular duct system that the furnace is being...

Страница 5: ...plenum On all installations without a coil a removable access panel is recommended in the outlet duct such that smoke or reflected light would be observable inside the casing to indi cate the presenc...

Страница 6: ...essibility IMPORTANT If an external mounted filter rack is being used see the instructions provided with that accessory for proper hole cut size HORIZONTAL MODELS IMPORTANT This furnace may be install...

Страница 7: ...removed and a new plenum installed that is the proper size for the new furnace Attach the return plenum to the furnace inlet duct flanges This is typi cally through the use of S cleat material when a...

Страница 8: ...fer to Table 15 SECTION IV GAS PIPING GAS SAFETY IMPORTANT Plan your gas supply before determining the correct gas pipe entry Use 90 degree service elbow s or short nipples and con ventional 90 degree...

Страница 9: ...e gas valve body is a very thin casting that cannot take any external pressure Never apply a pipe wrench to the body of the gas valve when installing piping A wrench must be placed on the octag onal h...

Страница 10: ...o the proper gas orifice size when the furnace is installed Do not attempt to drill out any orifices to obtain the proper orifice size Drilling out a gas orifice will cause misalignment of the burner...

Страница 11: ...ty is corrected Refer to FURNACE DIAGNOSTICS section of the User s Information Maintenance Service Manual provided with this furnace for symptoms of reversed power supply polarity LOW VOLTAGE CONTROL...

Страница 12: ...lt Common is optional when used with batteries Thermostat Installer Setup Number 1 System Type must be set to 6 2 Heat 2 Cool Conventional R 24 Volt Hot Heat XFMR W2 Second Stage Heat RC 24 Volt Hot C...

Страница 13: ...BSG Bonnet Sensor Bonnet Sensor Optional BS Bonnet Sensor W2 Second Stage Auxiliary Heat W2 Second Stage Auxiliary Heat AUX Auxiliary Heat E W1 First Stage Auxiliary Heat E W1 First Stage Auxiliary H...

Страница 14: ...gas supplies must be provided as specified with these instruc tions Since the furnaces are side by side with no space between gas supplies must enter on the right and left respectively All gas piping...

Страница 15: ...wers will come on in the selected continuous fan speed and will stay on until the G signal is removed SECTION VI VENT SYSTEM VENT SAFETY This Category I furnace is designed for residential application...

Страница 16: ...ese instructions Approved Modular Homes must be vented with an approved roof jack and may not be common vented with other appliances VENTING Category I venting consists of vertically venting one or mo...

Страница 17: ...se masonry chimney kits 3 The chimney must extend at least three 3 ft 0 91 cm above the highest point where it passes through a roof of a building and at least two 2 feet higher than any portion of th...

Страница 18: ...tion should be located where it will not be affected by wind gusts light snow airborne leaves or allow recirculation of flue gases 4 Termination should be located where it will not be damaged or expos...

Страница 19: ...anufacturer s instructions Dampers Louvers and Grilles Canada Only 1 The free area of a supply air opening shall be calculated by sub tracting the blockage area of all fixed louvers grilles or screens...

Страница 20: ...horizontally from the burner level of the appliance Refer to COMBUSTION AIR SOURCE FROM OUTDOORS and VENT AND SUPPLY AIR SAFETY CHECK in these instructions for additional information and safety check...

Страница 21: ...mounted on the burner assembly If the temperature around the burner exceeds the set point the ignition control and the gas valve are de energized The operation of this control indicates a malfunction...

Страница 22: ...m Source 1 which has the following items 1 12 30 cm length x 1 8 0 3 cm diameter tubing 2 pieces of 4 10 cm length x 1 8 0 3 cm diameter tubing 1 5 16 0 8 cm tee 1 5 16 0 8 cm x 1 8 3 175 mm reducing...

Страница 23: ...at the gas meter times a barometric pressure and temperature correction factor of 0 960 times 3600 then divided by the time it took to measure 0 10 m3 of gas from the gas meter For Propane LP Gas mul...

Страница 24: ...h low and high have been calibrated at the factory Additional pressure adjustment should not be necessary If adjustment is necessary set to the following specifications After adjustment check for gas...

Страница 25: ...eration Start the system by setting the thermostat above the room temperature Observe the system s response Then use the troubleshooting section in this manual to check the system s operation FURNACE...

Страница 26: ...mit switch has opened its normally closed contacts and has remained open for more than five minutes This condition is usually caused by a failed blower motor or blower wheel 12 RED FLASHES This code i...

Страница 27: ...the difference in ESP values in the table 0 60 w c 150 Pa 0 50 w c 125 Pa to obtain a percentage 0 58 0 50 0 60 0 50 0 8 Multiply percentage by airflow difference to obtain airflow reduction 0 8 X 70...

Страница 28: ...50 1440 1430 1390 1360 1310 1270 1220 1150 41 6 41 1 40 8 40 5 39 4 38 5 37 1 36 0 34 5 32 6 Low 1260 1260 1260 1260 1250 1200 1150 1110 1070 1010 35 7 35 7 35 7 35 7 35 4 34 0 32 6 31 4 30 3 28 6 80...

Страница 29: ...640 1550 1460 56 6 55 5 54 7 53 8 51 0 49 8 48 4 46 4 43 9 41 3 Medium 1440 1440 1430 1420 1400 1380 1340 1300 1220 1150 40 8 40 8 40 5 40 2 39 6 39 1 37 9 36 8 34 5 32 6 Low 1220 1230 1230 1230 1200...

Страница 30: ...272312 UIM A 0407 30 Unitary Products Group SECTION IX WIRING DIAGRAM FIGURE 31 Wiring Diagram...

Страница 31: ...272312 UIM A 0407 Unitary Products Group 31 NOTES...

Страница 32: ...t to change without notice Printed in U S A 272312 UIM A 0407 Copyright by York International Corp 2007 All rights reserved Supersedes 167185 UIM C 0806 Unitary 5005 Norman Product York OK Group Drive...

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