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8

VENTING AND COMBUSTION
AIR PIPING

WARNING

CARBON-MONOXIDE

POISONING

HAZARD

Failure to follow instruction could result in severe
personal injury or death due to carbon-monoxide
poisoning, if combustion products infiltrate into
the building.Check that all openings in the outside
wall around the vent (and air intake) pipe(s)
are sealed to prevent infiltration of combustion
products into the building.Check that furnace vent
(and air intake) terminals are not obstructed in
any way during all seasons.

3

WARNING

Corrosive or contaminated air may cause failure
of parts containing flue gas, which could leak into
the living space.

Air for combustion must not

be contaminated by halogen compounds, which
include fluoride, chloride, bromide and iodide.
These elements can corrode the heat exchanger
and burner cabinet component. This conditions
would shorten the furnace life. Air contaminants
are found in aerosol sprays, detergents, bleaches,
cleaning solvents, salts, air fresheners, and other
household products. Do not install the furnace
in a corrosive or contaminated atmosphere.
Make sure all combustion and circulating air
requirements are met, in addition to all local codes
and ordinances.

8.1

GENERAL

If this furnace replaces a furnace that was connected to
a vent system or chimney, the vent or vent connectors
of other remaining appliances may need to be re-sized.
Vent systems or vent connectors of other appliance must
be sized to the minimum size allowable.

An abandoned masonry chimney may be used as
a

raceway

for

properly

insulated

and

supported

combustion-air (when applicable) and vent pipes. Each
furnace must have its own set of combustion air and vent
pipes.

A furnace shall not be connected to a chimney flue
serving a separate appliance designed to burn solid fuel.

Other gas appliances with their own venting system
may also use the abandoned chimney as a raceway
providing it is permitted by local code, the current edition
of the National Fuel Gas Code, and the vent or liner

manufacturer’s installation instructions.

Care must be

taken to prevent the exhaust gases from one appliance
from contaminating the combustion air of other gas
appliances.

• The vent pipe and combustion air pipe must be the

same diameter.

• Slope horizontal vent piping upward a minimum

of 1/4" per foot of run so that condensate drains
toward the furnace.

• Support horizontal vent piping at least every five

feet. No sags or dips are permitted

• The vent pipe and combustion air pipe must

terminate on the same building side.

• Watt heat tape at the termination of venting could

be a necessity if ice build up is expected.

8.2

DIRECT VENT

When this furnace is installed as a direct vent (2 pipes)
furnace, no special provisions for combustion air are
required.

Direct vent installations require a dedicated combustion
air and exhaust vent piping. The system is only using
outside air for combution.

The vent and combustion air pipe can terminate vertically,
through the roof or horizontaly through and outside wall.
Refer to figures for approved termination.

Penetration throught a roof requires appropriate sealing
and proper flashing.

In Canada

, refer to manufacturer’s instructions for

supporting ULC S636 venting. ABS can be used for the
combustion air pipe.

8.3

NON DIRECT VENT

All air for combustion comes directly to the furnace from a
space that is well ventilated with outdoor air (such as an
attic or crawlspace). In addition, other gas appliances
installed in the space with the furnace may require
outside air for combustion.

The combustion air pipe

cannot be terminated in attics or crawlspaces that uses
ventilation fans designed to operate during the heating
season. If ventilation fans are present in these areas, the
combustion pipe must terminate outdoors as a direct vent
(2 pipe) system.

8.4

SPECIAL VENTING

REQUIREMENTS FOR
INSTALLATION IN CANADA

In Canada, S636 certified primers and cements must
be used and be of the same manufacturer of the S636
venting system- do not mix primers and cements from
one manufacturer with a vent system from a different

19

Summary of Contents for CC15-M-V

Page 1: ...future reference Caution Do not tamper with the unit or its controls Call a qualified service technician HOMEOWNER Please keep this manual near the furnace for future reference Manufactured by Dettson...

Page 2: ...1 NON COMMUNICATING MODULATING ONE STAGE OR TWO STAGE THERMOSTAT 16 7 3 2 THERMOSTAT INPUT 16 7 4 ALTERNATE POWER SUPPLY 17 8 VENTING AND COMBUSTION AIR PIPING 19 8 1 GENERAL 19 8 2 DIRECT VENT 19 8 3...

Page 3: ...Alternate horizontal termination A 22 Figure 23 Alternate horizontal termination B 22 Figure 24 Alternate horizontal termination C 22 Figure 25 Direct vent clearance 23 Figure 26 Other than Direct ve...

Page 4: ...assess the damage and to replace all critical parts that were in contact with water 3 Do not store gasoline or any other flammable substances such as paper or carton near the furnace 4 Do not stack it...

Page 5: ...o be handled by duct s sealed to the furnace casing and terminating outside the space containing the furnace See section 5 DUCT INSTALLATION This furnace may be installed with a two pipe sealed combus...

Page 6: ...th the National Fuel Gas Code ANSI Z223 1 NFPA 54 and or Natural Gas and Propane Installation code CSA B149 1 9 After it has been determined that each appliance connected to the venting system properl...

Page 7: ...n Code NSCNGPIC CAN CSA B149 1 General installation NFGC and the NFPA 90B For copies contact the National Fire Protection Association Inc Battery march Park Quincy MA 02269 or for only the NFGC contac...

Page 8: ...in this manual The furnace should be located as close to the chimney vertical venting or to the outside vent wall horizontal venting as possible 2 3 1 Location relative to cooling equipement The cooli...

Page 9: ...on Figure 3 Dimensions Figure 4 Top view Figure 5 Drain Trap Localisation Figure 6 Pressure switch connections for multipositions 4 1 UPFLOW The condensate trap must be outside the furnace casing Use...

Page 10: ...gths 1 4 5 and 2 9 25 3 Remove the appropriate knock out for drain trap Refer to Figure 5 for the location of the drain trap in downflow configuration 4 Cut open the pressure port located on the conde...

Page 11: ...er to ensure proper drainage of the condensate See figure 12 4 3 1 Horizontal Condensate drain connection 1 Remove PVC tubes from the ID blower condensate box and vent collector and block the openings...

Page 12: ...ith local building codes 12 The venting must be drained using a PVC 636 tee Connect this tee to a P trap and connect it to your condensate drain Commercially available condensate trap exist for use wi...

Page 13: ...fasteners for type of ductwork used Seal supply and return duct connections to the furnace with code approved tape or duct sealer Ductwork passing through an unconditioned space should be insulated t...

Page 14: ...ot have a 90 degree elbow and 10 ft 3 M of main duct to the first branch take off may require internal acoustical lining As an alternative fibrous ductwork may be used if constructed and installed in...

Page 15: ...ert the gas valve to propane 1 Move the switch located on the valve to the off position 2 Remove the NAT GAS label from the top of the gas valve 3 Using a pair of tweezers or needle nose pliers place...

Page 16: ...mum mode of operation and will give the best temperature control with minimal temperature variation from the desired set point Operation with a 2 stage thermostat will proceed as follow call on W1 wil...

Page 17: ...te Power from an alternate power supply that is non sinusoidal may damage the furnace electronics or cause erratic operation Contact the alternate power supply manufacturer for specifications and deta...

Page 18: ...Figure 17 Wiring Diagram 18...

Page 19: ...rrent edition of the National Fuel Gas Code and the vent or liner manufacturer s installation instructions Care must be taken to prevent the exhaust gases from one appliance from contaminating the com...

Page 20: ...e 2 Count the number of elbows for each pipe 3 For each pipe multiply the number of elbows by the equivalent length for the type of elbow used see table 11 Record the equivalent length of all the elbo...

Page 21: ...INATION All clearance specified in this manual are in accordance with the current CSA B149 1 Natural and Propane Installation Code and the current ANSI Z223 1 NFPA 54 National Fuel Gas Code For cleara...

Page 22: ...r the elbows to fit on the pipes Holes in the roof for two pipe terminations should be spaced no more than 18 457 mm apart Termination elbows will be installed after the vent and combustion air pipe a...

Page 23: ...Figure 25 Direct vent clearance 23...

Page 24: ...Figure 26 Other than Direct vent clearance 24...

Page 25: ...ve the burner compartment control access door 3 IMPORTANT Be sure that the manual gas control has been in the OFF position for at least five minutes Do not attempt to manually light the main burners 4...

Page 26: ...oth pressure switches quickly Once both pressure switches are sensed to be closed the inducer will run for 25 seconds before the ignition trial starts Hot surface igniter is energized during the pre p...

Page 27: ...esent the furnace will not operate in any mode and a fault will be displayed 9 12 REPLACING FURNACE CONTROL In the event that the furnace control must be replaced the memory card must be detached from...

Page 28: ...r future reference To keep your operating costs low and to eliminate unnecessary service calls we have provided a few guidelines These guidelines will help you understand how your gas furnace operates...

Page 29: ...g 3 Leave the building immediately 4 Immediately call your gas supplier Follow the gas supplier s instructions 5 If you cannot reach the gas supplier call the fire department 10 2 OPERATING YOUR FURNA...

Page 30: ...sense current is weak or weird 1 Clean or replace de flame sensor 2 Check gas outlet pressure 3 Take a combustion analysis A dirty flamme sensor needs to be investigate 13 Flame lost 1 Clean or replac...

Page 31: ...e gas valve will immediately close flame will be lost blower motor operation will immediately stop and the furnace will shut down normally with Inducer post purge at the correct speed After the post p...

Page 32: ...Outlet gas pressure high fire 100 Outlet gas pressure low fire 40 Static pressure in return Static pressure in supply Temperature rise Is drain trap filled with water Is drain trap outlet vented with...

Page 33: ...Table 18 Specification table 1 Maximum CFM acheived in standard duct systems 2 Maximum CFM acheived using SmartDuct system 33...

Page 34: ...12 PART LIST Figure 27 Exploded view...

Page 35: ...Figure 28 Exploded view continued...

Page 36: ...Table 19 Part list Chinook Compact...

Page 37: ...Table 20 Part list continued...

Page 38: ...13 NOTES 38...

Page 39: ...39...

Page 40: ...40...

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