background image

16

Vent (Single Pipe) Piping - Vent/Flue Pipe Terminations

 for spe-

cific details on termination construction.
Although 

non-direct

 

vent

 installations do not require a combus-

tion air intake

 pipe

, a minimum of one 90° elbow should be at-

tached to the furnace’s combustion air intake 

if

: an upright instal-

lation uses the standard intake location, or a horizontal installa-
tion uses the alternate air intake location.  This elbow will guard
against inadvertent blockage of the air intake.

V

ENT

/F

LUE

 P

IPE

 L

ENGTHS

 

AND

 D

IAMETERS

Refer to the following table for applicable length, elbows, and
pipe diameter for construction of the vent/flue pipe system of a
non-direct vent installation.  In addition to the vent/flue pipe, a
single 90° elbow should be secured to the combustion air intake
to prevent inadvertent blockage.  The tee used in the vent/flue
termination must be included when determining the number of
elbows in the piping system.

Pipe     

Siz e 

(4)

(inc .)

2

3

4

5

6

7

8

045_3

2

68

65

62

59

56

53

50

070_3

2

68

65

62

59

56

53

50

070_4

2

46

43

40

2

16

13

10

3

68

65

62

59

56

53

50

090_5

3

68

65

62

59

56

53

50

115_5

3

68

65

62

59

56

53

50

Non-Dir e ct V e nt (Single  Pipe )

Max imum A llow able Length of  V ent/Flue Pipe (f t)

 

(1 ) (2 )

Number of  Elbow s  

(3) (5)

Models

(kBtu_Tons

)

090_4

Not Rec ommended

1) One 90° elbow should be secured to the combustion air intake con-

nection.

2) Minimum requirement for each vent pipe is five (5) feet in length and

one elbow/tee.

3) Tees and/or elbows used in the vent/flue termination must be included

when determining the number of elbows in the piping system.

4) 3” diameter pipe can be used in place of 2” diameter pipe.
5) Increased Clearance Configurations using (2) 45 deg.  Long Sweep

elbows should be considered equivalent to one 90 deg. elbow.

V

ENT

/F

LUE

 P

IPE

  T

ERMINATIONS

The vent/flue pipe may terminate vertically, as through a roof, or
horizontally, as through an outside wall.
Vertical vent/flue pipe terminations should be as shown in the
following figure.  Refer to 

Section IX, Vent/Flue Pipe and Com-

bustion Air Pipe - Termination Locations

 for details concerning

location restrictions.  The penetration of the vent through the roof
must be sealed tight with proper flashing such as is used with a
plastic plumbing vent.
Horizontal vent/flue pipe terminations should be as shown in the
following figure. Refer to 

Section IX, Vent/Flue Pipe and Combus-

tion Air Pipe - Termination Locations

 for details concerning loca-

tion restrictions.  A 2 3/8” diameter  wall penetration is required for
2” diameter pipe while a 3 1/2” diameter hole is required for 3”
diameter pipe.  To secure the pipe passing through the wall and
prohibit damage to piping connections, a coupling should be in-
stalled on either side of the wall and solvent cemented to a length
of pipe connecting the two couplings.  The length of pipe should
be the wall thickness plus the depth of the socket fittings to be
installed on the inside and outside of the wall.  The wall penetra-
tion should be sealed with silicone caulking material.
In a basement installation, the vent/flue pipe can be run between
joist spaces.  If the vent pipe must go below a joist and then up
into the last joist space to penetrate the header, two 45° elbows
should be used to reach the header rather than two 90° elbows.

Counterflow 

units.

Remove plastic plug from alternate combustion air intake
location.  Relocate and install plug in standard air intake
location (basepan).  Plug the remaining hole in the blower
deck with the plastic plug included in the  drain kit bag.

4.

Upflow 

and 

Counterflow

 units.

With the gasket facing the cabinet side panel, and the
flange’s flat spot facing forward, secure the combustion
air intake coupling to the cabinet using the screws removed
in step 1 or with field-supplied 3/8” #8 self -drilling screws.

CAUTION

B

E SURE NOT TO DAMAGE INTERNAL WIRING OR OTHER COMPONENTS WHEN

REINSTALLING COUPLING AND SCREWS.

5.

Upflow 

and 

Counterflow

 units.

For 

non-direct vent installation

installed 

horizontally

, a

minimum of one 90° elbow should be installed on the
combustion air intake coupling to guard against inadvertent
blockage.  No elbow is required on the alternate
combustion air intake of 

upright

 installations, however,  a

minimum clearance of 2 inches is required to assure
proper air supply.

6.

Upflow 

and 

Counterflow

 units.

For 

direct vent installations

, secure field-supplied

combustion air intake pipe directly to the air intake coupling.

NOTE:

  A PVC coupling or elbow is required on counterflow

units.

ADDITIONAL 
PLUG FROM

DRAIN KIT

SECURE

TO CABINET

UPFLOW/HORIZONTAL SHOWN

(COUNTERFLOW SIMILAR)

REMOVE

3 SCREWS

REMOVE

4 SCREWS

REMOVE

4 SCREWS

REMOVE

AND

RELOCATE

.

REMOVE

AND

RELOCATE

REMOVE

AND CUT

REMOVE

UPFLOW

COUNTERFLOW

5

4

1

2

2

3

3

1

1

3

2" CLEARANCE

REQUIRED

(NON-DIRECT

VENT)

5

Alternate Combustion Air Intake Location

N

ON

-D

IRECT

 V

ENT

 (S

INGLE

 P

IPE

) P

IPING

Non-direct

 

vent 

installations require only a vent/flue pipe.  The

vent pipe can be run horizontally with an exit through the side of
the building or run vertically with an exit through the roof of the
building.  The vent can also be run through an existing 

unused

chimney; however, it must extend a minimum of 12 inches above
the top of the chimney.  The space between the vent pipe and the
chimney must be closed with a weather-tight, corrosion-resistant
flashing.  For details concerning connection of the vent/flue pipe
to the furnace, refer to 

Section IX, Vent/Flue Pipe and Combustion

Air - Standard Furnace Connections or Alternate Furnace Con-
nections

 for specific details.  Refer to the following 

Non-Direct

Summary of Contents for GMS95

Page 1: ...f in a position which is more hazardous than when the unit is in operation Remember it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer...

Page 2: ...ROPER VENT FLUE AND COMBUSTION AIR PIPING PRACTICES 13 TERMINATION LOCATIONS 13 CANADIAN VENTING REQUIREMENTS 14 STANDARD FURNACE CONNECTIONS 14 ALTERNATE FURNACE CONNECTIONS 14 NON DIRECT VENT SINGLE...

Page 3: ...afety Circuit Description 31 GENERAL 31 INTEGRATED CONTROL MODULE 31 PRIMARY LIMIT 31 AUXILIARY LIMIT 31 ROLLOUT LIMIT 31 PRESSURE SWITCHES 31 FLAME SENSOR 31 XVIII Troubleshooting 31 ELECTROSTATIC DI...

Page 4: ...warranty certificate is also supplied with the unit Read the warranty carefully and note what is covered Keep the warranty cer tificate in a safe location for future reference If additional informatio...

Page 5: ...lectrical Connection Inlets Alternate 19 Coil Front Cover Pressure Tap 20 Coil Front Cover Drain Port 21 Drain Line Penetrations 22 Drain Trap 23 Blower Door Interlock Switch 24 Capacitor 25 Integrate...

Page 6: ...are set per the furnace rating plate The input rate and temperature rise are set per the furnace rating plate 100 outside air is provided for combustion air requirements during construction Temporary...

Page 7: ...ly air opening and the combustible floor Exposure to contaminated combustion air will result in safety and performance related problems Do not install the furnace where the combustion air is exposed t...

Page 8: ...g system properly vents when tested as outlined above re turn doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous conditions of use halogen type refriger...

Page 9: ...input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a par...

Page 10: ...nsion of rectangular air ducts shall not be less than 3 inches ing shall have a minimum free area of 1 square inch per 1 000 BTU per hour of the total input rating of all gas utilization equipment in...

Page 11: ...tallation Positions figure for appropriate in stallation positions ductwork connections and resulting airflow arrangements VII HO VII HO VII HO VII HO VII HORIZO RIZO RIZO RIZO RIZONT NT NT NT NTAL AP...

Page 12: ...ane gas installations require an orifice change to compensate for the energy content difference between natural and propane gas High altitude installations may require both a pressure switch and an or...

Page 13: ...nt flue pipe and a combustion air intake pipe Refer to the appropriate section for details concerning piping size length number of elbows furnace connections and terminations MATERIALS AND JOINING MET...

Page 14: ...DIRECT VENT INSTALLATIONS On upflow units secure the combustion air intake pipe directly to the air intake coupling On counterflow units secure the combus tion air intake pipe to the air intake coupl...

Page 15: ...ue piping to the rubber elbow using a worm gear hose clamp NOTE Use of the alternate vent flue location for upright installations requires the drain trap be installed on the same side of the unit as t...

Page 16: ...ould be in stalled on either side of the wall and solvent cemented to a length of pipe connecting the two couplings The length of pipe should be the wall thickness plus the depth of the socket fitting...

Page 17: ...s in each Vent Flue Combustion Air Intake pipe Elbows and or tees used in the terminations must be included when determining the number of elbows in the piping systems If the combustion air intake pip...

Page 18: ...es If the pipes must go below the joist and then up into the last joist space to penetrate the header two 45 elbows should be used to reach the header rather than two 90 elbows VENT INTAKE TERMINATION...

Page 19: ...t installations using the standard vent flue outlet require drain hoses to be connected as follows The following quantity of hoses tubes and hose clamps are provided with the unit HOSE A QTY 1 HOSE B...

Page 20: ...flow models relocation of the front cover pressure switch hose is required Make connections as follows 1 Remove the rubber plug from the coil front cover drain port Counterflow furnaces Relocate the f...

Page 21: ...is an integral part of this furnace Field alter ation to comply with electrical codes should not be required Wires are color coded for identification purposes Refer to the wiring diagram for wire rout...

Page 22: ...at 120 VAC Turn OFF power to the furnace before installing any accessories Follow the humidifier or air cleaner manufacturers instructions for locating mounting grounding and controlling these access...

Page 23: ...field convertible for use with propane gas by replacing the regulator spring with a propane gas spring from an appropriate manufacturer s propane gas conversion kit Taps for measuring the gas supply p...

Page 24: ...rotect against external corrosion when in contact with masonry plaster or insulation or subjected to repeated wetting by liquids such as water except rain water detergents or sewage MANUAL SHUT OFF VA...

Page 25: ...nace manifold with all gas appliances in operation Maintaining proper gas pressure depends on three main factors 1 Vaporization rate depending on temperature of the liquid and wetted surface area of t...

Page 26: ...the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and if manually operated must be equipped with means to prevent operation...

Page 27: ...nace is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 5 Move the furnace gas valve manual control to the OFF position 6 Wait five minute...

Page 28: ...soap suds check for leaks at hose connection Bubbles forming indicate a leak SHUTOFF GASAND FIXALLLEAKS IMMEDIATELY BEFORE PROCEEDING TO NEXT STEP 6 Measure furnace gas supply pressure Supply pressure...

Page 29: ...uals the installation s gas heating value multiplied with a conversion factor hours to seconds divided by the number of seconds per cubic foot The measured input must not be greater than the input ind...

Page 30: ...sensed Circulator blower is energized on heat speed following a fixed thirty second blower on delay Electronic air cleaner terminals are energized with circulator blower Furnace runs integrated contro...

Page 31: ...DISCHARGE ESD PRECAUTIONS NOTE Discharge body s static electricity before touching unit An electrostatic discharge can adversely affect electrical components Use the following precautions during furna...

Page 32: ...e filter s by reversing the procedure for removal 4 Turn ON electrical power to furnace MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL Follow the manufacturer s directions for service BURNERS Visu...

Page 33: ...he blower until filter clears bottom rail 5 Lower filter down and pull outward Front of Furnace Blower Front of Furnace Blower 6 Replace filter by reversing procedure X X X X XXI BEFO XI BEFO XI BEFO...

Page 34: ...34...

Page 35: ...kage proper length elbows and termination Check drain system Correct as necessary Correct pressure switch setpoint or contact motion Tighten or correct wiring connection Pressure switch hose blocked p...

Page 36: ...e sensor with emery clot See Vent Flue Pipe section for piping details See rating plate for proper gas pressure 7 7 FLASHES Flame sensor is coated oxidized Flame sensor incorrectly positioned in burne...

Page 37: ...OSTAT CONNECTIONS BU GN GND 115 VAC 24 VAC BLOWER COMPARTMENT DOOR SWITCH OPEN WHEN DOOR OPEN DOOR SWITCH WARNING DISCONNECT POWERBEFORE SERVICING WIRING TOUNITMUST BE PROPERLYPOLARIZED AND GROUNDED B...

Reviews: