Unitary products group AHV8 UH Installation Manual Download Page 13

271001-UIM-A-0407

Unitary Products Group

13

 FIGURE 10:  

Thermostat Chart - HP

HP24

Two Stage H/P - H*5B, YZE - w/Variable 2 Stage Furnace, 2 Stage Cooling Ready - PV8/9, (F,L)*8/9V, (G,L)*8/9V, XYG80V-U, XY

F80V-U / XYF80V-U*L

W/031-01996- Series Demand Control; Hot Heat Pump Mode OR Conventional 

TWO STAGE

HEAT PUMP

*PP32U70124

*DN22H00124

*PP32U71124

THERMOSTAT THERMOSTAT

THERMOSTAT

VARIABLE SPEED

FURNACE CONTROL

*DP22U70124

*PP32U72124

C

24-Volt Common

C

24-Volt Common

C

24-Volt Common

C

24-Volt Common

C

24-Volt Common

Y

First Stage Heat/Cool

Y1

First Stage Heat/Cool

Y1

First Stage Heat/Cool

Y1

First Stage Cool

Y1

First Stage Heat/Cool

Y2 OUT

Second Stage Cool Output

R

24-Volt Hot (Heat XFMR)

R

24-Volt Hot

R

24-Volt Hot

R

24-Volt Hot

R

24-Volt Hot

RC

24-Volt Hot (Cool XFMR)

Y/Y2

Single/Second Stage Cool

W1 OUT

First Stage Auxiliary Heat Output

W2

Second Stage Auxiliary Heat

W2

Second Stage Auxiliary Heat

W2

Second Stage Heat

W2 OUT

Second Stage Auxiliary Heat Output

E

Emergency Heat

W/W1

Single/First Stage Heat

G

Fan

G

Fan

G

Fan

G

Fan

CFM CONTROL

O

Reversing Valve–Energized in Cool

L

Malfunction Light

L

Malfunction Light

L

Malfunction Light

(X/L)

Malfunction Light

X/L

Malfunction Light

O/B

Reversing Valve

O

Reversing Valve–Energized in Cool

O

Reversing Valve–Energized in Cool

(O)

Reversing Valve–Energized in Cool

Y2

Second Stage Heat/Cool

DHM

Dehumidistat

HUM

Dehumidification - Open on Humidity Rise

Y2

Second Stage Heat/Cool

Y2

Second Stage Heat/Cool

Y2

Second Stage Heat/Cool

(Y 2)

AUX

Auxiliary Heat

E/W1

First Stage Auxiliary Heat

E/W1

First Stage Auxiliary Heat

W

Auxiliary Heat

HM

Humidistat

BSG

Bonnet Sensor

Bonnet Sensor (Optional)

BS

Bonnet Sensor

24V HUMIDIFIER

(Optional)

Thermostat Installer Setup Number 0170 - 

System Type - must be set to 

12 - 3 Heat/2 Cool Heat Pump

Selection of GAS/ELEC switch 

on thermostat not necessary

Step 1 of Thermostat User Configuration 

Menu must be set to Heat Pump 2

Set W2 Delay on furnace to OFF

Thermostat Installer Setup Number 0200 - 

Backup Heat Source - must be set to 1 - Heat 

Pump Backup Heat Source is Fossil Fuel

Thermostat Installer Setup Number 0210 - 

External Fossil Fuel Kit - must be set to 0 - 

External Fossil Fuel Kit is Controlling Heat 

Pump Backup Heat

Change FFuel Jumper on 

Heat Pump to ON

Thermostat Installer Setup Number 0190 - 

Reversing Valve (O/B) Operation - must be 

set to 0 - O/B Terminal Energized in Cooling

Step 1 of Thermostat User 

Configuration Menu must be 

set to Heat Pump 2

E2/P Switch  must be in the E2 position 

and the Humidistat Jumper on CFM 

Control must be in the 'YES' position for 

Dehumidification

( ) CONVENIENCE TERMINAL. NO 

FUNCTION IN THIS APPLICATION.

Summary of Contents for AHV8 UH

Page 1: ...ited to building electrical and mechanical codes LIST OF SECTIONS SAFETY 1 DUCTWORK 4 FILTERS 8 GAS PIPING 8 ELECTRICAL POWER 10 VENT SYSTEM 14 SAFETY CONTROLS 19 START UP AND ADJUSTMENTS 20 WIRING DI...

Page 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...

Page 3: ...ed 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 o...

Page 4: ...erates at 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...

Page 5: ...supply 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...

Page 6: ...floor support with required service accessibility IMPORTANT If an external mounted filter rack is being used see the instructions provided with that accessory for proper hole cut size HORIZONTAL MODEL...

Page 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...

Page 8: ...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 elbow s to enter throu...

Page 9: ...ing The 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...

Page 10: ...er must take every precaution to insure that the furnace has been converted to the proper gas orifice size when the furnace is installed Do not attempt to drill out any orifices to obtain the proper o...

Page 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...

Page 12: ...Stage Cool Y2 Second Stage Cool W2 Second Stage Heat G Fan R 24 Volt Hot W First Stage Heat Y1 First Stage Cool R 24 Volt Hot Y Y2 Single Second Stage Cool Y2 Second Stage Cool W2 Second Stage Heat G...

Page 13: ...versing Valve Energized in Cool O Reversing Valve Energized in Cool O Reversing Valve Energized in Cool Y2 Second Stage Heat Cool DHM Dehumidistat HUM Dehumidification Open on Humidity Rise Y2 Second...

Page 14: ...ssory Connections FIGURE 12 Vent Termination 115 VOLT HUMIDIFER 115 VOLT ELECTRONIC AIR CLEANER EAC HOT HUM HOT BLK WHT EAC HUM NEUTRALS SWITCHED CIRCUITS BLK WHT LOWEST DISCHARGE OPENING LISTED CAP L...

Page 15: ...the authority having jurisdiction Venting into an unlined masonry chimney or concrete chimney is prohibited Whenever possible B 1 metal pipe should be used for venting Where use of an existing chimne...

Page 16: ...nd from any direction will not create a positive pressure in the vicinity of the vent FIGURE 17 Home Layout L E D B V V V X V B V J X B B B V V F V C B X V I V G H A M K OPERABLE FIXED CLOSED VENT TER...

Page 17: ...obtain proper air for combus tion and ventilation in confined spaces Combustion Air Source From Outdoors The blocking effects of louvers grilles and screens must be given con sideration in calculatin...

Page 18: ...el 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 procedure 2 The duct shall be ei...

Page 19: ...ustion air blower heat exchanger or a blocked vent pipe connection Corrective action is required These are manual reset controls that must be reset before operation can continue PRESSURE SWITCHES This...

Page 20: ...in w c 0 3 73 kPa in order to measure the gas line and the manifold pressures 4 You will need a 3 32 Allen wrench for the pressure port plugs in the gas valve 5 You will need 2 pieces of 1 8 0 3 cm ID...

Page 21: ...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...

Page 22: ...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...

Page 23: ...eed to the other Tap B is the humid profile This profile is best suited for installations where the humidity is frequently very high during cooling season such as in the southern part of the country O...

Page 24: ...pressure switch or miswiring 3 RED FLASHES This indicates the normally open pressure switch contact did not close after the inducer was energized This could be caused by a number of problems faulty i...

Page 25: ...ry the LED will flash two green flashes To clear the memory push the LAST ERROR button and hold it for more than five seconds The LED will flash three green flashes when the memory has been cleared th...

Page 26: ...47 5 30 9 47 5 30 9 1540 1001 1540 1001 C B 43 6 28 3 43 6 28 3 1440 936 1440 936 B C 40 8 26 5 40 8 26 5 1320 858 1320 858 D B 37 4 24 3 37 4 24 3 1400 910 1400 910 C A 39 6 25 8 39 6 25 8 1200 780 1...

Page 27: ...stem static from 0 60 w c 150 Pa and divide this by 0 1 w c 25 Pa 0 68 170 Pa 0 60 150 Pa 0 08 20 Pa 0 08 20 Pa 0 1 25 Pa 0 8 Multiply this by 2 to obtain the percentage reduction in airflow 0 8 x 0 0...

Page 28: ...Printed in U S A 271001 UIM A 0407 Copyright by York International Corp 2007 All rights reserved Supersedes 167187 UIM C 0806 Unitary 5005 Norman Product York OK Group Drive 73069 SECTION IX WIRING D...

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