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271043-UIM-B-0707

HIGH EFFICIENCY
TUBULAR HEAT EXCHANGER SERIES

MODELS: AHV9*UP / AHC9V*UP / AHL9V*UP

(Two Stage Variable Speed Upflow)

40 - 120 MBH INPUT
(11.7 - 35.1 KW) INPUT

INSTALLATION MANUAL

EFFICIENCY
RATING
CERTIFIED

ISO 9001

Certified Quality

Management System

SECTION I: SAFETY

This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.

Understand and pay particular attention to the signal words 

DANGER

,

WARNING

, or 

CAUTION

.

DANGER 

indicates an 

imminently

 hazardous situation, which, if not

avoided, 

will result in death or serious injury

.

WARNING 

indicates a 

potentially

 hazardous situation, which, if not

avoided, 

could result in death or serious injury

.

CAUTION 

indicates a potentially hazardous situation, which, if not

avoided 

may result in minor or moderate injury.

 It is also used to

alert against unsafe practices and hazards involving only property dam-
age.

Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer or service agency.

This product must be installed in strict compliance with the installa-
tion instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical
codes.

LIST OF SECTIONS

SAFETY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DUCTWORK  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FILTERS   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GAS PIPING   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ELECTRICAL POWER   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

COMBUSTION AIR AND VENT SYSTEM . . . . . . . . . . . . . . . . . . . . .12
CONDENSATE PIPING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
SAFETY CONTROLS   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .19
WIRING DIAGRAM   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

LIST OF FIGURES

Dimensions   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gas Piping  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Wiring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermostat Chart - AC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermostat Chart - HP  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Accessory Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Dimensions   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Home Layout  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Termination Configuration - 1 Pipe   . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Termination Configuration - 2 Pipe   . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Termination Configuration - 2 Pipe Basement  . . . . . . . . . . . . . . . . . . 15

Double Horizontal Sealed Combustion Air and Vent Termination   . . .16
Double Vertical Sealed Combustion Air and Vent Termination   . . . . .16
Sealed Combustion Air Intake Connection and Vent Connection   . . .16
Combustion Airflow Path Through The Furnace Casing   . . . . . . . . . .16
Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . .17
Attic and Crawl Space Combustion Air Termination . . . . . . . . . . . . . .18
Condensate Piping  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Pressure Switch Tube Routing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Gas Valve  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Reading Gas Pressure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Furnace Control Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Wiring Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

LIST OF TABLES

Unit Clearances to Combustibles  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Minimum Duct Sizing For Proper Airflow  . . . . . . . . . . . . . . . . . . . . . . . 5
Round Duct Size   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended Filter Sizes   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Nominal Manifold Pressure - High Fire   . . . . . . . . . . . . . . . . . . . . . . . . 8
Nominal Manifold Pressure - Low Fire  . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical and Performance Data  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum Equivalent Pipe Length  . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Equivalent Length of Fittings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Elbow Dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Combustion Air Intake and Vent Connection Size at Furnace 
(All Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Free Area  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Unconfined Space Minimum Area in Square Inch   . . . . . . . . . . . . . . .17
Inlet Gas Pressure Range   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Air Flow Data   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Filter Performance - Pressure Drop Inches W.C. and (kPa) . . . . . . . .27
Field Installed Accessories - Non Electrical  . . . . . . . . . . . . . . . . . . . .27

Summary of Contents for AHV9 UP

Page 1: ...electrical and mechanical codes LIST OF SECTIONS SAFETY 1 DUCTWORK 4 FILTERS 6 GAS PIPING 7 ELECTRICAL POWER 8 COMBUSTION AIR AND VENT SYSTEM 12 CONDENSATE PIPING 18 SAFETY CONTROLS 19 START UP AND AD...

Page 2: ...ible 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 ARE NOT CSA l...

Page 3: ...or and the furnace must be located or protected to avoid physical damage by vehicles The furnace area must not be used as a broom closet or for any other storage purposes as a fire hazard may be creat...

Page 4: ...NOTE When attaching duct flange do not shoot the screw down into the casing Use the formed flange intended for duct flange attachment The duct system is a very important part of the installation If th...

Page 5: ...e presence of leaks in the heat exchanger This access cover shall be attached in such a manner as to prevent leaks TABLE 2 Minimum Duct Sizing For Proper Airflow Input Cabinet Airflow Return1 Rectangu...

Page 6: ...provided with that accessory for proper hole cut size SECTION III FILTERS FILTER INSTALLATION All applications require the use of a filter Filters must be installed external to the furnace cabinet DO...

Page 7: ...igure 1 dimensions The inlet to the gas valve lines up directly with the opening in the left side of the furnace casing To line up with the opening in the right side of the casing two street ells shou...

Page 8: ...5 1 4 1 3 39 1 0 37 0 34 0 31 1100 1 3 1 2 1 1 41 0 0 34 0 31 0 28 2500 LP 4 1 3 8 3 5 93 2 LP 1 03 0 95 0 87 PROPANE AND HIGH ALTITUDE CONVERSION KITS It is very important to choose the correct kit...

Page 9: ...o the terminal board on the ignition module as shown in Figures 5 and 6 Electronic thermostats may require the common wire to be connected as shown in Figures 5 and 6 Apply strain relief to thermostat...

Page 10: ...ight O Reversing Valve Energized in Cool TWO STAGE AIR CONDITIONING Comfort Alert Interface HUM Dehumidification Open on Humidity Rise C 24 Volt Common C 24 Volt Common R 24 Volt Hot W2 Second Stage H...

Page 11: ...W2 Delay on furnace to OFF HM Humidistat BSG Bonnet Sensor Bonnet Sensor Optional BS Bonnet Sensor AUX Auxiliary Heat E W1 First Stage Auxiliary Heat E W1 First Stage Auxiliary Heat W Auxiliary Heat Y...

Page 12: ...length listed in Table 8 is for the vent pip ing and the air intake piping separately For example if the table allows 65 equivalent feet for a particular model then the vent can have 65 equivalent fe...

Page 13: ...piping apply cement primer and the cement per the manufactures instructions Primer and cement must conform to ASTM D2564 for PVC or ASTM D2235 for ABS piping 7 All joints must provide a permanent air...

Page 14: ...ns 9 inches 23 cm for models 50 000 BTUH 15 kW 12 inches 30 cm for models 50 000 BTUH 15 kW C Clearance to permanently closed window 12 inches 30 cm 12 inches 30 cm D Vertical clearance to ventilated...

Page 15: ...systems must be installed so the vent and the combustion air pipes terminate in the same atmospheric zone Refer to Figures 11 or 12 VENTING MULTIPLE UNITS Multiple units can be installed in a space or...

Page 16: ...vent Care should be taken to locate side vented systems where trees or shrubs will not block or restrict supply air from entering the terminal Also the terminal assembly should be located as far as p...

Page 17: ...LE VENT GAS VENT SOFFIT VENT VENTILATED ATTIC TOP ABOVE INSULATION OPTIONAL INLET a OUTLET AIR a VENTILATED CRAWL SPACE GAS WATER HEATER VENTILATED ATTIC TOP ABOVE INSULATION GAS VENT GABLE VENT SOFFI...

Page 18: ...Air The ventilated attic space or a crawl space from which the combustion air is taken must comply with the requirements specified in AIR SOURCE FROM OUTDOORS in this instruction or in Section 5 3 Air...

Page 19: ...e controls are mounted on the burner box assembly If the temper ature in the burner box exceeds its set point the ignition control and the gas valve are de energized The operation of this control indi...

Page 20: ...ll start and come up to speed Shortly after inducer start up the hot surface igniter will glow for about 17 seconds b After this warm up the ignition module will energize open the main gas valve c Aft...

Page 21: ...3600 then divided by the time it took to measure 0 10 m3 of gas from the gas meter For Propane LP Gas multiply the Heat content of the gas MJ m3 or Default 93 15 times 0 10 m3 of gas measured at the...

Page 22: ...shown in Figure 21 The procedure below is used to adjust either the high fire manifold pressure or the low fire manifold pressure IMPORTANT The cap for the pressure regulator must be removed entirely...

Page 23: ...blown into the heated space The fan off timing may be adjusted by positioning the jumper on two of the four pins as shown in Figure 23 WITH BURNER BOX COVER IN PLACE WITH BURNER BOX COVER REMOVED FIG...

Page 24: ...een the R and W terminals The indoor fan motor is energized through the W1 heat terminal and runs on the speed selected on the HEAT tap of the control board Humidistat When a humidistat is installed i...

Page 25: ...T CODE STORAGE AND RETRIEVAL The control in this furnace is equipped with memory that will store up to five error codes to allow a service technician to diagnose problems more easily This memory will...

Page 26: ...A C 52 1 35 4 53 2 35 4 1560 1010 1620 1030 C B 44 2 28 6 45 9 29 2 1470 940 1500 960 B C 41 6 26 6 42 5 27 2 1370 890 1410 880 D B 38 8 25 2 39 9 24 9 1460 930 1490 920 C A 41 3 26 3 42 2 26 1 1250 7...

Page 27: ...in in2 cm2 In W C kPA In W C kPA In W C kPA 0 750 0 21 4 230 1484 0 01 0 00249 0 01 0 00249 0 15 0 03736 751 1000 21 25 28 32 330 2129 0 05 0 01245 0 05 0 01245 0 20 0 04982 1001 1250 28 33 35 40 330...

Page 28: ...Printed in U S A 271043 UIM B 0707 Copyright by York International Corp 2007 All rights reserved Supersedes 271043 UIM A 0407 Unitary 5005 Norman Products York OK Group Drive 73069 SECTION X WIRING D...

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