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272312-UIM-A-0407

18

Unitary Products Group

A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

‡  Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. For clearance not specified in ANSI Z223.1 / NFPA 

54 or CSA B149.1-00.

Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer’s Installation Manual.
Any fresh air or make up inlet for dryer or furnace area is considered to be forced air inlet. 
Avoid areas where condensate drippage may cause problems such as above planters, patios, or adjacent to windows where steam may cause fogging.
A terminus of a vent shall be either:
Fitted with a cap in accordance with the vent manufacturer’s installation instructions, or In accordance with the installation instructions for a special venting system.
* Does not apply to multiple installations of this furnace model. Refer to "VENTING MULTIPLE UNITS" in this section of these instructions.

IMPORTANT:

 Consideration must be given for degradation of building materials by flue gases. Sidewall termination may require sealing or shielding of building surfaces 

with a corrosion resistant material to protect against combustion product corrosion. Consideration must be given to wind direction in order to prevent flue products and/
or condensate from being blown against the building surfaces. If a metal shield is used it must be a stainless steel material at a minimum dimension of 20 inches. It is 
recommended that a retaining type collar be used that is attached to the building surface to prevent movement of the vent pipe.
Responsibility for the provision of proper adequate venting and air supply for application shall rest with the installer.
Vent shall extend high enough above building, or a neighboring obstruction, so that wind from any direction will not create a positive pressure in the vicinity of the vent.

HORIZONTAL VENT APPLICATIONS AND 

TERMINATION

When selecting the location for a horizontal combustion air / vent termi-
nation, the following should be considered:

1.

Observe all clearances listed in vent clearances in these instruc-
tions.

2.

Termination should be positioned where vent vapors will not dam-
age plants or shrubs or air conditioning equipment.

3.

Termination 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
exposed to flying stones, balls, etc.

5.

Termination should be positioned where vent vapors are not objec-
tionable.

6.

Horizontal portions of the vent system must slope upwards and be
supported to prevent sagging. The vent system may be supported
by the use of clamps or hangers secured to a permanent part of
the structure every 4 ft. (1.22 m).

 FIGURE 20:  

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 TERMINAL

AIR SUPPLY

AREA WHERE TERMINAL IS NOT PERMITTED

FIXED
CLOSED

Canadian Installations

1

US Installation

2

A. Clearance above grade, veranda, porch, deck, or balcony

12 inches (30 cm)

12 inches (30 cm)

B. Clearance to window or door that may be opened

12 inches (30 cm) for models <100,000
 BTUH (30 kW), 36 inches (91 cm) for 
models > 100,000 BTUH (30 kW)

4 Feet (1.22 m)

C. Clearance to permanently closed window

12 inches (30 cm)

12 inches (30 cm)

D. Vertical clearance to ventilated soffit located 
above the terminal within a horizontal distance 
of 2 feet (61 cm) from the center line of the terminal

4 Feet (1.22 m)

4 Feet (1.22 m)

E. Clearance to unventilated soffit

12 Inches (30 cm)

12 Inches (30 cm)

F. Clearance to outside corner

12 Inches (30 cm)

12 Inches (30 cm)

G. Clearance to inside corner

6 Feet (1.83 m)

6 Feet (1.83 m)

H. Clearance to each side of center line extended 
above meter/regulator assembly

3 feet (0.91 m) within a height 
15 feet (4.57 m) above the 
meter/regulator assembly

3 feet (0.91 m) within a height 
15 feet (4.57 m) above the 
meter/regulator assembly

I. Clearance to service regulator vent outlet

3 feet (0.91 m)

3 feet (0.91 m)

J. Clearance to nonmechanical air supply inlet to 
building or the combustion air inlet to any other appliance

12 inches (30 cm) for models <100,000 
BTUH (30 kW), 35 inches (91 cm) for 
models >100,000 BTUH (30 kW)

4 Feet (1.22 m)

K. Clearance to a mechanical supply inlet

6 feet (1.83 m)

3 feet (0.91 m) above if within 
10 feet (3.04 m) horizontally

L. Clearance above paved sidewalk or paved 
driveway located on public property

7 feet (2.13 m) 

7 feet (2.13 m) 

M. Clearance under veranda, porch, deck, or balcony

12 inches (30 cm)

12 inches (30 cm)

Vent Termination from any Building Surface

12 inches (30 cm)

12 inches (30 cm)

Above anticipated snow depth

12 inches (30 cm)

12 inches (30 cm)

1. In accordance with the current CSA B149.1-00, Natural Gas and Propane Installation Code.
2. In accordance with the current ANSI Z223.1 / NFPA 54, National Gas Code.

Содержание FC8T-UH

Страница 1: ...DJUSTMENTS 22 WIRING 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 Pipi...

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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