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INSTALLATION MANUAL
Modulating ECM
Residential Gas Furnaces
Models: YP9C, CP9C, LP9C, TP9C Series
(up to 98% AFUE Multi-position)
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Condensate piping and furnace venting configuration . . . . 17
Combustion air and vent system . . . . . . . . . . . . . . . . . . . . . . 22
Duct attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Combustible floor base accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal application (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical attic installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical suspended furnace/crawl space installation . . . . . . . . . . . . . 7
Downflow venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Furnace and coil attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Side return cutout markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Left side supply gas pipe arrangement . . . . . . . . . . . . . . . . . . . . . . . 9
Gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Furnace control board – communications connections . . . . . . . . . . 12
Modulating furnace with communicating AC or HP . . . . . . . . . . . . . 12
Modulating furnace with communicating thermostat
and non-communicating AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Terminal screw wire connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Furnace with variable capacity AC or HP . . . . . . . . . . . . . . . . . . . . . 13
Thermostat chart - single stage air conditioner
with modulating furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Thermostat chart - two stage air conditioner
with modulating furnace (wiring diagram option one) . . . . . . . . . . . . 14
Unit Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . 4
Cabinet and duct dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommended Filter Sizes (High Velocity 600 FPM) . . . . . . . . . 8
High altitude orifices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Ratings and physical/electrical data . . . . . . . . . . . . . . . . . . . . . 11
Maximum equivalent pipe length . . . . . . . . . . . . . . . . . . . . . . . . 23
Elbow dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Equivalent length of fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Combustion air intake and vent connection size at furnace
(all models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Johnson Controls Ducted Systems
List of sections
Start-up and adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Safety controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Normal operation and diagnostics . . . . . . . . . . . . . . . . . . . . 36
Replacement parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Replacement part contact information . . . . . . . . . . . . . . . . . 38
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
List of figures
Thermostat chart - two stage air conditioner
with modulating furnace (wiring diagram option two) . . . . . . . . . . . . 15
Thermostat chart - single stage heat pump with modulating furnace 15
Thermostat chart - two stage heat pump with modulating furnace . . 16
Typical condensate drain, vertical installation . . . . . . . . . . . . . . . . . 17
Upflow configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Downflow configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Horizontal left configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Horizontal right configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Home layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Termination configuration - one pipe . . . . . . . . . . . . . . . . . . . . . . . . 26
Termination configuration - two pipe . . . . . . . . . . . . . . . . . . . . . . . . . 26
Termination configuration - two pipe basement . . . . . . . . . . . . . . . . 26
Double horizontal combustion air intake and vent termination . . . . . 27
Double vertical combustion air intake and vent termination . . . . . . . 27
Downward venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Direct vent air intake connection and vent connection . . . . . . . . . . . 27
Combustion airflow path through the furnace casing . . . . . . . . . . . . 28
Ambient combustion air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Attic and crawl space combustion air termination . . . . . . . . . . . . . . . 30
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Furnace control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
List of tables
Estimated free area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Unconfined space minimum area . . . . . . . . . . . . . . . . . . . . . . . 28
Free area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Gas rate (cu ft/h) at full input . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Inlet gas pressure range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Nominal manifold pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Default blower speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Blower performance CFM - any position . . . . . . . . . . . . . . . . . . 35
Assembled at a facility with
an ISO 9001:2015-certified
Quality Management
System
5750151-UIM-G-0423
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Related Manuals for Johnson Controls YP9C Series
Summary of Contents for Johnson Controls YP9C Series
- Page 1 (all models) ........24 Johnson Controls Ducted Systems...
- Page 2 7. Always install the furnace to operate within the furnace’s intended temperature rise range. Only connect the furnace to a duct system which has an external static pressure within the allowable range, as specified on the furnace rating plate. Johnson Controls Ducted Systems...
- Page 3 4. Paper bags, boxes or other paper products Never operate the furnace with the blower door removed. To do so could result in serious personal injury and/or equipment damage. Johnson Controls Ducted Systems...
- Page 4 (top in horizontal position) of the furnace jacket the appliance is not using outdoor combustion air). and building joists, studs or framing. 2. For combustible floors only when used with special sub-base. All furnaces approved for alcove and attic installation. Johnson Controls Ducted Systems...
- Page 5 Refer to the instructions supplied with the duct con- configuration, then extra 2 in. (5.1 cm) minimum spacing may be nector for proper installation. needed to ensure against drain pan distortion. Johnson Controls Ducted Systems...
- Page 6 This line or ceiling joists. See Figure 5 for details and additional information. may be in contact with combustible material. See Figure 4 for details and additional information. Johnson Controls Ducted Systems...
- Page 7 To apply the furnace in a downflow position, it will be necessary to rotate the vent blower 90° left or right so that the vent pipe passes through the side of the furnace casing rather than the end. See Figure Figure 7: Furnace and coil attachment Johnson Controls Ducted Systems...
- Page 8 2.Do not exceed 1800 CFM using a single side return and a 16x25 filter. For CFM greater than 1800, you may use two side returns or one side and the bot- tom or one side return with a transition to allow use of a 20x25 filter. Johnson Controls Ducted Systems...
- Page 9 Supply Ground Union Drip Leg Valve External Manual Shut-off Valve Ground Pipe Union Drip Drip Valve Ground Union To Gas Valve Supply Pipe Drip Ground Drip Pipe Union Upflow Downflow Horizontal Drip Figure 12: Gas piping Johnson Controls Ducted Systems...
- Page 10 Field wiring to the unit must be grounded. Electric wires that are field installed shall conform to the temperature limitation for 63°F (35°C) rise wire when installed in accordance with instructions. See Table 5 in these instructions for specific furnace electrical data. Johnson Controls Ducted Systems...
- Page 11 See Figure 16. 3. The furnace's control system requires correct polarity of the power supply and a proper ground connection. See Figure 13. Johnson Controls Ducted Systems...
- Page 12 6 in., and use a wire connector to connect the other end of the pigtail to the other wires. Failure to do this will result in nuisance communication error faults. See Figure 17. Figure 15: Modulating furnace with communicating AC or HP Johnson Controls Ducted Systems...
- Page 13 NOT run a thermostat “R” wire to the outdoor unit. See Figure 18 for This furnace control board can control a two-stage A/C using only a sin- details. gle-stage thermostat. In this case, the furnace control switches between high cool and low cool based on the calculated cooling load. Johnson Controls Ducted Systems...
- Page 14 DEHUM (Optional) Open on Dehumidification Humidity Rise A0895-001 Figure 19: Thermostat chart - single stage air conditioner with modulating furnace Figure 20: Thermostat chart - two stage air conditioner with modulating furnace (wiring diagram option one) Johnson Controls Ducted Systems...
- Page 15 5750151-UIM-G-0423 Figure 21: Thermostat chart - two stage air conditioner with modulating furnace (wiring diagram option two) Figure 22: Thermostat chart - single stage heat pump with modulating furnace Johnson Controls Ducted Systems...
- Page 16 4. Hot Heat Pump - The “hot” heat pump feature will not work when the control is wired to a single-stage thermostat and a two-stage heat pump. Johnson Controls Ducted Systems...
- Page 17 Liquid anti-freeze will cause damage to internal plastic parts of this furnace. DO NOT attempt to winterize the furnace using liquid anti-freeze. Johnson Controls Ducted Systems...
- Page 18 5750151-UIM-G-0423 Figure 25: Upflow configuration Johnson Controls Ducted Systems...
- Page 19 5750151-UIM-G-0423 Figure 26: Downflow configuration Johnson Controls Ducted Systems...
- Page 20 5750151-UIM-G-0423 Figure 27: Horizontal left configuration Johnson Controls Ducted Systems...
- Page 21 5750151-UIM-G-0423 Figure 28: Horizontal right configuration Johnson Controls Ducted Systems...
- Page 22 For other IPEX System 1738 pipe and fitting part numbers, visit 225°F temperature. Flexible connectors are also allowed in the website www.ipexna.com/usa/products/plumbing-mechanical/flue-gas- combustion air pipe. venting-systems/system-1738-pvc Johnson Controls Ducted Systems...
- Page 23 Max. equivalent Length (ft) Model Input (Btu/h) Pipe Size (in) Max. equivalent Length (ft) 60,000 60,000 60,000 60,000 60,000 60,000 80,000 80,000 80,000 80,000 80,000 80,000 100,000 100,000 100,000 100,000 100,000 100,000 120,000 120,000 120,000 120,000 Johnson Controls Ducted Systems...
- Page 24 32 ft of 3 in. pipe = 32 equivalent ft and must comply with local codes and requirements. 5 - 90º standard 3 in. elbows = (5 x 7) = 35 equivalent ft Total = 67 equivalent ft of 3 in. pipe Johnson Controls Ducted Systems...
- Page 25 20 inches (51 cm). It is recommended that a retaining type collar be used that is attached to the building surface to prevent movement of the vent pipe. Johnson Controls Ducted Systems...
- Page 26 The combustion air and and sealing any equipment air leaks that might contact the intake pipe vent pipes must terminate in the same atmospheric zone. will help reduce condensation. Johnson Controls Ducted Systems...
- Page 27 It is recom- editions. mended that the supplied intake coupling and 18 in. of pipe be attached to the furnace to prevent accidental blockage or combustion air intake. Johnson Controls Ducted Systems...
- Page 28 Air (a) Soffit Vent Outlet Outlet Vent Air (b) Air (a) Water Heater Water Water Inlet Heater Inlet Inlet Heater Inlet Ventilated Air (b) Air (b) Air (a) Air (a) Crawl Space Figure 39: Ambient combustion air Johnson Controls Ducted Systems...
- Page 29 8. Any corrections to the venting system and / or to the supply (outside) air system must be in accordance with the National Fuel Gas Code Z223.1 or CAN/CGA B149.1 Natural Gas and Propane Installation Code (latest editions). If the vent system must be resized, follow the appro- priate tables in Appendix G of the above codes or for this appliance. Johnson Controls Ducted Systems...
- Page 30 The ignition control will make three 3.8 in. W.C. for natural gas at sea level. If manifold pressure is out- attempts to light before locking out. side this range, change main burner orifices. Johnson Controls Ducted Systems...
- Page 31 The 2 cu ft dial provides a more accurate measure- plate input rate, the control will reduce the input to the point that there ment of gas flow. will be good combustion. 4. See Table 13 for cubic feet of gas per hour. Johnson Controls Ducted Systems...
- Page 32 Nominal manifold pressure Natural Gas (Max) 3.5 in. W.C. (0.87 kPa) Natural Gas (Min) 0.5 in. W.C. (0.15 kPa) Propane (LP) Gas (Max) 10.0 in. W.C. (2.49 kPa) Propane (LP) Gas (Min) 1.6 in. W.C. (0.40 kPa) Johnson Controls Ducted Systems...
- Page 33 6 ft (1.83 m) from the furnace where they will not be 080C16 affected by radiant heat. Increase the blower speed to decrease the 100C16 temperature rise; decrease the blower speed to increase the rise. Johnson Controls Ducted Systems...
- Page 34 30 s to ramp from one speed to another. Cooling Speed Zoning Humidifier Terminals Jumper Jumper Terminals Heat Pump Jumper Humidistat Jumper Continuous Fan Speed Jumper Test Button Diagnostic Voltage Last Light Terminals Error Button Figure 42: Furnace control board Johnson Controls Ducted Systems...
- Page 35 Corrective action is required. These are manual reset controls that must be reset before operation can continue. Johnson Controls Ducted Systems...
- Page 36 2. The manual shut-off valves in the gas line to the furnace must be improperly sized duct system, faulty blower motor, restricted circulating open. airflow an open fuse on the control board. 3. Make sure all wiring connections are secure. Johnson Controls Ducted Systems...
- Page 37 5 s. The LED will flash three green flashes when the PLUG, SEAL, 2-3/8 in. memory has been cleared, then will resume the normal slow green PLUG, VENT PIPE flash after a five-second pause. BAG, PARTS 4 Req’d KNOB, QUARTER TURN DIAGRAM, WIRING Johnson Controls Ducted Systems...
- Page 38 3. Customer Service contact information. a. Click on the “Brand Links” button b. Click on the “Customer Service” button • You can contact us by mail. Just send a written request to: Johnson Controls Ducted Systems Consumer Relations 5005 York Drive Norman, OK 73069 Third-Party Trademarks Notice: For information about third-party trademarks, refer to the relevant company websites.
- Page 39 221 degrés F (105 degrés C ). FIRE DURING PART OF THE THERMOSTAT "OFF" CYCLE. 2. Seulement des matettes pour fil de cuivre. Refer to the furnace instructions for further information. 5427814-UWD-C-0519 Figure 43: Wiring diagram Johnson Controls Ducted Systems...
- Page 40 5750151-UIM-G-0423 Notes Johnson Controls Ducted Systems...
- Page 41 Thermostat heat anticipator set to .1 (if present) Thermostat wiring is complete Thermostat cycle rate set to 6 cycles/hour (if present) Low voltage value between "R" and "C" on furnace control board (volts AC) Continued on next Page Johnson Controls Ducted Systems...
- Page 42 Explain thermostat use and programming (if applicable) to owner Additional Job Detail Subject to change without notice. Published in U.S.A. 5750151-UIM-G-0423 Copyright © 2023 by Johnson Controls. All rights reserved. Supersedes: 5750151-UIM-F-1122 York International Corp. 5005 York Drive Norman, OK 73069...
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