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1083292-UIM-A-0114

10

Johnson Controls Unitary Products

Horizontal Filters

Any branch duct (rectangular or round duct) attached to the plenum
must attach to the vertical plenum before the filter. The use of straps
and/or supports is required to support the weight of the external filter
box.

Downflow Filters

Downflow furnaces typically are installed with the filters located above
the furnace, extending into the return air plenum or duct. Any branch
duct (rectangular or round duct) attached to the plenum must attach to
the vertical plenum above the filter height.

Filter(s) may be located in the duct system external to the furnace using
an external duct filter box attached to the furnace plenum or at the end
of the duct in a return filter grille(s). The use of straps and/or supports is
required to support the weight of the external filter box.

SECTION IV: GAS PIPING

GAS SAFETY

GAS PIPING INSTALLATION

Properly sized wrought iron, approved flexible or steel pipe must be
used when making gas connections to the unit. If local codes allow the
use of a flexible gas appliance connection, always use a new listed con-
nector. Do not use a connector that has previously serviced another gas
appliance.

Some utility companies or local codes require pipe sizes larger than the
minimum sizes listed in these instructions and in the codes. The fur-
nace rating plate and the instructions in this section specify the type of
gas approved for this furnace - only use those approved gases. The
installation of a drip leg and ground union is required. Refer to Figure
16.

The furnace must be isolated from the gas supply piping system by
closing its individual external manual shutoff valve during any pressure
testing of the gas supply piping system at pressures equal to or less
than 0.5 psig (3.5 kPa).

Gas piping may be connected from either side of the furnace using any
of the gas pipe entry knockouts on both sides of the furnace. Refer to
Figures 13 and 16.

All filters and mounting provision must be field supplied. All installa-
tions must have a filter installed.

An overpressure protection device, such as a pressure regulator,
must be installed in the gas piping system upstream of the furnace
and must act to limit the downstream pressure to the gas valve so it
does not exceed 0.5 psig [14" w.c. (3.48 kPa)]. Pressures exceed-
ing 0.5 psig [14” w.c. (3.48 kPa)] at the gas valve will cause damage
to the gas valve, resulting in a fire or explosion or cause damage to
the furnace or some of its components that will result in property
damage and loss of life.

Plan your gas supply before determining the correct gas pipe entry.
Use 90° service elbow(s), or short nipples and conventional 90°
elbow(s) to enter through the cabinet access holes.

 FIGURE 15:  

Gas Valve

An accessible manual shutoff valve must be installed upstream of
the furnace gas controls and within 6 feet (1.8 m) of the furnace.

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 octa-
gon hub located on the gas inlet side of the valve. Placing a wrench
to the body of the gas valve will damage the valve causing improper
operation and/or the valve to leak.

Inlet
Pressure
Tap

Outlet
Pressure
Tap

On/Off
Switch

Main
Regulator
Adjustment

 FIGURE 16:  

Gas Piping

Upflow

Configuration

Downflow

Configuration

Horizontal

Configuration

External
Manual
Shut-off
Valve

External
Manual
Shut-off
Valve

External Manual
Shut-off Valve

To Gas
Supply

To Gas
Supply

To Gas
Supply

To Gas
Supply

To Gas
Supply

To Gas
Supply

Drip
Leg

Drip
Leg

Drip
Leg

Drip
Leg

Drip Leg

Drip
Leg

Gas
Pipe

Gas
Valve

Gas
Pipe

Gas
Valve

Gas
Pipe

Gas
Valve

Ground
Union

Ground
Union

Ground
Union

Ground
Union

Ground
Union

Ground
Union

NOTE: Ground Union maybe installed inside or outside unit.

Summary of Contents for CP9C Series

Page 1: ...rmostat Chart Two Stage Air Conditioner with Single Stage Thermostat Variable Speed Modulating Furnace 17 Thermostat Chart Single Stage Heat Pump Variable Speed Modulating Furnace 18 Thermostat Chart...

Page 2: ...marking Means for providing outdoor air required for combustion Return air temperature maintained between 55 F 13 C and 80 F 27 C The air filter must be replaced upon substantial completion of the co...

Page 3: ...g jurisdiction In the United States and Canada follow all codes and standards for the following using the latest edition available STEP 1 Safety US National Fuel Gas Code NFGC NFPA 54 ANSI Z223 1 and...

Page 4: ...nstalled in every dwelling building or structure used in whole or in part for resi dential purposes including those owned or operated by the Com monwealth and where the side wall exhaust vent terminat...

Page 5: ...ed down for shipment In order to use the flanges remove the screw holding an individual flange rotate the flange so it is in the upward position and reinstall the screw then repeat this for all 4 flan...

Page 6: ...t exchang ers where attached to the vestibule panel Do not use the top return bend of the heat exchangers as lifting points as the tubes may shift out of position or their location brackets baffles SU...

Page 7: ...il casing over or under the furnace opening as shown in Figure 7 after configuring coil flanges as required see Coil Flange sec tion below COIL FLANGE INSTALLATION The coil cabinet includes four remov...

Page 8: ...t such that a minimum dis tance is maintained between the top of the coil and the top of the duct Refer to Table 2 COIL FURNACE ASSEMBLY HD SERIES COILS Horizontal duct coils are referred to as HD ser...

Page 9: ...trical Entry Condensate Drain Optional Return Air Cutout Either side 29 5 For Cladded door add appoximately an additional 75 C SUPPLY END 56 56 20 B 3 23 8 56 Combustion Air Inlet RETURN END B 24 25 2...

Page 10: ...from either side of the furnace using any of the gas pipe entry knockouts on both sides of the furnace Refer to Figures 13 and 16 All filters and mounting provision must be field supplied All installa...

Page 11: ...es to larger 43 orifices which will bring the input rate back up to approxi mately 76 000 BTU H which is what it should be for that furnace at 6 000 feet SECTION V ELECTRICAL POWER ELECTRICAL POWER CO...

Page 12: ...bushing where the wires pass through the furnace panel After making the wiring connections replace the wiring box cover and screws Refer to Figure 17 3 The furnace s control system requires correct p...

Page 13: ...or heat pump with a fully communicating control This furnace may also be used along with the Communicating Thermo stat Control and a non communicating outdoor air conditioner through the addition of...

Page 14: ...tage wiring as shown in Figure 24 This furnace control board can control a two stage A C using only a sin gle stage thermostat In this case the furnace control switches between high cool and low cool...

Page 15: ...Heat Clipping Jumper W914 for electric heat on thermostat is not necessary C 24 Volt Common Y Compressor SINGLE STAGE AIR CONDITIONER Y Compressor Contactor SINGLE STAGE AIR CONDITIONER C 24 Volt Com...

Page 16: ...Volt Hot Y1 Single Stage Compressor MODULATING FURNACE CONTROL G Fan MODULATING FURNACE Y Y2 Second or Full Stage Compressor DHUM Dehumidification Open on Humidity Rise W Modulating Heat Move HUMIDIST...

Page 17: ...ssary C 24 Volt Common R 24 Volt Hot Y1 Single Stage Compressor MODULATING FURNACE CONTROL G Fan MODULATING FURNACE Y Y2 Second or Full Stage Compressor DHUM Dehumidification Open on Humidity Rise W M...

Page 18: ...CONTROL X L Malfunction Light W Auxiliary Heat SINGLE STAGE HEAT PUMP Y2 Second Stage Compressor Step 9 of Thermostat Installer Configuration Menu must be set to Pump OFF Step 1 of Thermostat Installe...

Page 19: ...Energized in Cool C 24 Volt Common R 24 Volt Hot W1 OUT First Stage Heat W2 OUT Second Stage Heat Y2 OUT Second Stage Compressor Y1 Single Stage Compressor X L Malfunction Light Y2 Second Stage Compre...

Page 20: ...at XFMR RC 24 Volt Hot Cool XFMR AUX Auxiliary Heat Step 1 of Thermostat Installer Configuration Menu must be set to HP2 Selection of GAS ELEC switch on thermostat not necessary Thermostat Installer S...

Page 21: ...the W signal is removed 2 Defrost Cycle When both a W signal and a Y2 signal are pres ent the modulating firing rate will operate at a constant 80 firing rate and there will be no Run 2 function so th...

Page 22: ...and drain hose located in the loose parts bag The intake drain hose is to be installed by connecting it to the inlet pipe coupling and to the collec tor box as shown in Figures 29 31 and 32 The drain...

Page 23: ...ff so that no sagging loops will collect and hold condensate which will cause the furnace to not operate Shorten pressure switch hose Re route and shorten pressure switch hose Shorten rain gutter hose...

Page 24: ...tch hose to this position NOTE May require the longer hose that is provided with wider cabinets Move condensate drain hose to this position May exit either side of the cabinet Move rain gutter hose to...

Page 25: ...ose to this position NOTE May require the longer hose that is provided with wider cabinets Change condensate drain connection to the 90 fitting provided Move condensate drain hose to this position Mov...

Page 26: ...tting provided Move condensate drain hose to this position Move rain gutter hose to this position Change condensate drain connection to the 90 fitting provided Move condensate drain hose to this posit...

Page 27: ...to American National Standards Institute ANSI and American Society for Test ing and Materials ASTM standards D1785 Schedule 40 PVC D2665 PVC DWV F891 PVC DWV Cellular Core D2261 ABS DWV or F628 Schedu...

Page 28: ...5 80 000 4 125 100 000 2 20 100 000 2 NA 100 000 3 80 100 000 3 60 100 000 4 145 100 000 4 125 120 000 3 80 120 000 3 60 120 000 4 145 120 000 4 125 Elevation 4001 5000 Elevation 8001 9000 Model Input...

Page 29: ...VENTING FIGURE 33 Dimensions TABLE 8 Elbow Dimensions Elbow A Dimension Illustrated in Figure 33 2 Standard 2 5 16 3 Standard 3 1 16 2 Sweep 3 1 4 3 Sweep 4 1 16 TABLE 9 Equivalent Length of Fittings...

Page 30: ...equirements of the gas supplier 12 30 5 cm or in accordance with local installation codes and the requirements of the gas supplier F Clearance to outside corner 12 30 5 cm or in accordance with local...

Page 31: ...Each furnace must have a separate vent pipe Under NO circumstances can the two vent pipes be tied together The combustion air side of the two pipe configuration shown in Figures 36 and 37 can be insta...

Page 32: ...ipes are not termi nated in the same atmospheric zone Refer to Figure 44 for attic and crawl space termination Only the combustion air intake may terminate in the attic The vent must terminate outside...

Page 33: ...as an exhaust fan kitchen ventilation system clothes dryer or fireplace may cre ate conditions requiring special attention to avoid unsatisfactory operation of gas appliances A venting problem or a l...

Page 34: ...Refer to Table 7 for intake pipe sizing allowable length and elbow usage Follow all notes procedures and required materials in the COMBUSTION AIR VENT PIPE SIZING section in these instructions when i...

Page 35: ...no thermostat calls no call for heating cooling or continuous fan push and hold the TEST but ton on the board for one second The LED on the board will glow red 2 Release the TEST button The LED on the...

Page 36: ...ifice hole is essential for proper flame characteristics DO NOT bottom out gas valve regulator adjusting screw This can result in unregulated manifold pressure and result in excess over fire and heat...

Page 37: ...R jumper on the furnace control board The jumper is factory set to deliver an air temperature rise near the midpoint of the nameplate temperature rise range If more air is desired lower temper ature r...

Page 38: ...e southern part of the country On a call for cooling the blower will ramp up to 50 of full capacity and will stay there for two minutes then will ramp up to 82 of full capacity and will stay there for...

Page 39: ...90 840 H B 1100 715 1090 710 MH B 1065 690 1015 660 H A 1000 650 1000 650 MH A 960 625 960 625 H C 760 495 760 495 ML B 900 585 900 585 MH C 660 430 660 430 L B 690 450 680 445 ML A 600 400 600 400 L...

Page 40: ...e is equipped with a high temperature limit control mounted to the left side of the furnace vestibule panel This limit switch will open and shut off gas to the burners if it detects excessive air temp...

Page 41: ...ating airflow an open fuse on the control board Five Red Flashes Rollout switch or condensate pressure switch open Check the rollout switch es on the burner assembly It is a man ual reset switch To re...

Page 42: ...GHT GLASS OVAL 2 Req d GASKET FOAM Door 1 5 ft req d PAN CONDENSATE BRACKET DOOR HARNESS WIRING FERRULE 3 Req d GROMMET 3 Req d MOTOR MOUNT TUBING SILICON HOSE RAIN GUTTER HOSE CONDENSATE PLUG SEAL 7...

Page 43: ...und neutral Gas valve shorted ON Check blower motor wiring ID plug missing OR not connected properly None Slow Green Rapid Green Slow Amber Rapid Amber 2 Amber 3 Amber 4 Amber 5 Amber 6 Amber Steady R...

Page 44: ...1083292 UIM A 0114 44 Johnson Controls Unitary Products NOTES...

Page 45: ...neutral Ground wire is connected Line voltage value to furnace volts AC Low voltage value between R and C on furnace control board volts AC Thermostat Type Other System Equipment and Accessories Owne...

Page 46: ...Calculated input in btuh clock the gas meter Nat Gas Only Manifold Gas Pressure in w c furnace must be in TEST mode for setup Inlet Gas Pressure in w c LP Gas Conversion Kit Part Used Burner flame in...

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