INSTALLATION INSTRUCTIONS FOR HEATER KIT #1 P/N CD11005K1
Piper PA-23 Apache · Weight And Balance
Overview
This document provides installation instructions for Heater Kit #1, specifically designed for the Piper PA-23 Apache and its variants. It covers the installation process, wiring, plumbing, and testing procedures necessary to integrate the heater into the aircraft. The instructions emphasize compliance with FAA regulations and the importance of following the aircraft's service manual. It also includes information on weight and balance considerations related to the heater installation, ensuring that pilots and maintenance personnel can safely and effectively install the heater while adhering to regulatory requirements.
- Old heater weight: 23 lbs; new heater weight: 28 lbs.
- Weight and balance calculations required after installation.
- Electrical requirements: 12VDC.
- Preferred fuel pressure during testing: 8 psi (6.5 psi min, 10 psi max).
- Installation must comply with FAA regulations and aircraft service manual.
Document
Source
Originally published by janitrol.aero. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Weight And Balance
- Year
- 2015
- Pages
- 18
- File size
- 774 KB
- Publisher
- janitrol.aero
Common. Rarer than 8% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Piper PA-23 Apache.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Free — save the PA-23 Apache 150 to your watchlist and track it in one place.
More Piper PA-23 Apachemanuals & documents
- SERVICE BULLETIN NO. 1299Service Bulletins
- SERVICE LETTER NO. 1141Maintenance Manual
- PIPER PA-23-150/160 ApacheSystems Description
- AAIB Bulletin: 1/2007 G-MOLY EW/G2006/07/24Other Documents
- Piper Parts CatalogChecklist
- Specifications for the Piper PA-23 ApacheSpecifications
- Piper PA-23 Apache Supplemental Type CertificateSupplemental Type Certificate
- FOR TRAINING PURPOSES ONLY!Pilot's Operating Handbook
- Airplane Flight ManualFlight Manual
- Piper Apache 235 SpecsChecklist
If you fly the Piper PA-23 Apache, you may also be researching these.
In this document
Installation Overview
The heater kit is designed for installation on Piper PA-23 aircraft, including models PA-23-160 and PA-23-235. It is crucial to ensure that the aircraft conforms to its original Type Certificate (TC). The installation process involves removing the existing heater, if applicable, and following detailed steps for the new heater's installation, including securing it to the airframe and connecting necessary electrical and fuel lines.
Weight and Balance Considerations
The installation of the new heater kit adds weight to the aircraft. The old heater weighs 23 lbs, while the new heater kit weighs 28 lbs. A weight and balance calculation must be performed, and a Form 337 must be completed to document the installation. The logbook entry should reference STC SA01566CH and PMA Supplement #42.
Electrical and Plumbing Requirements
All wiring must comply with AC43.13-1B Chapter 11 for electrical systems. The installation includes a new heater control switch and requires proper connections to the aircraft's electrical system. Plumbing must also adhere to AC43.13-1B Chapter 8, ensuring that fuel lines and connections are secure and leak-free.
Testing Procedures
After installation, the heater must undergo operational testing. This includes verifying the heater's temperature output and ensuring that the fuel pressure is within the specified range (preferred pressure is 8 psi, with a minimum of 6.5 psi and a maximum of 10 psi). Proper installation verification is essential to ensure safety and functionality.
Documentation and Compliance
The document outlines the necessary documentation required for the installation, including FAA/PMA Supplement #42, installation instructions, and a label for the flight manual. Compliance with the South Wind AD 81-09-09 is noted as not applicable to this heater.
Safety notes
- Ensure all wiring is secure and free of obstruction and chafing.
- Verify that the temperature probe is not touching the plenum internal wall during testing.
Full document text
IN11005K1 Dated 3/15/07 Page 1 of 5 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com INSTALLATION INSTRUCTIONS FOR HEATER KIT #1 P/N CD11005K1 For Piper Aircraft PA-23, PA-23-160, PA-23-235 (12VDC) Apache S/N 23-1and up, S/N 27-505 thru 27-622. READ COMPLETE INSTRUCTIONS BEFORE BEGINNING INSTALLATION This system has been built to be installed on an aircraft that conforms to that aircrafts original Type Certificate (TC). If this aircraft has been modified from the original TC, (modifications such as props, engines, fuel system etc.) contact C&D Associates, Inc. for possible adjustments to this installation. Accomplish all wiring in accordance with AC43.13-1B Chapter 11, Electrical Systems. Accomplish all plumbing in accordance with AC43.13-1B Chapter 8, Section 2, par. 8-31. LOG OF REVISIONS Rev. Description Pages Revised Date G Reformatted instructions and changed testing section 1-5 5/7/15 1. Follow the Aircraft Service Manual or other FAA approved source for removal of the existing combustion heater. 2. Install the C&D Associates, Inc., TSO-C20 Approved combustion heater utilizing the existing Aircraft Service Manual or other FAA approved source where applicable. 2.1 For ease of installation two “retainer plates” can be utilized to secure combustion heater to air frame. Install 1 each lengthwise in place of bolt location and anchor to airframe with supplied 60172 nut and 60177 washer. Set combustion heater in place and secure to retainer plates with 2 each supplied 7” worm drive clamps, making sure clamps sit completely over retainer plates on forward and aft edges. Tighten retainer plate nuts and 7” clamps. 2.2 Remove the old safety valve and fuel filter assembly from the firewall. For carbureted aircraft install the new fuel pump (CD21197) with the safety wired end cap down, using the legs of the pump as a template for the new bolt pattern. Replace the fuel lines with those included with the kit. 2.3 Replace the old exhaust pipe, shroud and shroud retainer with the new ones included with the heater kit. Secure the exhaust pipe and shroud with the exhaust clamp and pin assembly supplied with exhaust pipe. IN11005K1 Dated 3/15/07 Page 2 of 5 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com The shroud retainer will replace the old one in the A/C skin if desired. If needed trim the exhaust shroud to allow a ½” extension beyond the aircraft skin. The exhaust pipe should extend 2” beyond the skin of the aircraft, maintaining the same exhaust scarf aft and the shroud may be trimmed flush. 2.4 Combustion Air Blower: If room permits locate the combustion air blower on the heater using the mounting bracket P/N 21191B and two six inch clamps. (Figure 1) If room does not permit, discard the bracket and two clamps and install the combustion air blower above the heater on the existing shelf. Connect the combustion air hose (red) as shown. (Figure 2) Optional combustion air blower installation locations. 2.5 The adjustable duct switch P/N CD21253 is to be installed aft of the heater in the plenum. Make two 1/16" holes 2-5/8" apart in a convenient location. Half way between the 1/16" holes, drill a 1/2" hole for the thermistor and mount the switch using two sheet metal screws. 3. Electrical: This heater installation comes with a new heater control switch P/N CD20654. This switch replaces the old heater wiring, old heater control switch and high-low switch if equipped. The new switch rotates from the full counter clockwise position of “off” to “fan” and 10 positions to “full heat” in the full clockwise position. 3.1. Fuel pump (Carbureted aircraft only): There is only one wire you may want to reuse. Locate this wire, marked H2B, running from the old heater terminal 2 to the safety valve on the firewall. In the new installation this wire will connect from the fuel pump over to the new heater terminal strip number 2. 3.2. Heater Electrical Connection (Figure 3): Remove the old heater control switch. Locate and identify the wire running from the heater circuit breaker to the old heater switch. Marking on this old wire will be H3A. This wire is to be connected to the red wire on the new switch. Route the remaining wires (blue, white, and two yellow) to the new heater. Secure in route in accordance with AC 43.13-1A Chapter 12 for Electrical applications. The blue wire from the new switch is for the vent fan and will be connected to the heater terminal strip number 6. The white wire is connected to the heater terminal strip number 1. 3.3. Thermostat (see step 2.5): Connect thermostat red wire to the heater terminal 2 and blue wire to terminal 3. The two yellow wires are to join the switches yellow wires, in any order. 3.4. Combustion Air Blower: Black wire to airframe ground, green wire (12V) to heater terminal strip #1. 3.5. Old Wiring: CAUTION: The old wire marked H3A or H3B is hot any time the master switch is on. Remove or secure the ends of the old wiring. Optional hour meter is connected to terminal #2. Optional overheat light may be connected to terminal #4 on the heater strip. FIGURE 1 FIGURE 2 IN11005K1 Dated 3/15/07 Page 3 of 5 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com FIGURE 3 4. TESTING 4.1 HEATER OPERATIONAL TEST AFTER INSTALLATION: IMPORTANT!! Please complete the followings steps after the new heater is installed in the aircraft. (Heater terminal strip numbered 1 2 3 4 5 6). 4.1.1 Install a temperature probe (min 0-500° F) in the outlet plenum 6-8” aft of the heater. A good location would be approx. 6” aft of the heater or near the thermostat sensor. Usually you can find a small access point somewhere in the ducting aft of the heater.
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CAUTION: Verify thermal couple is not touching plenum internal wall. 4.1.2 Setting upper limit temperature upper limit switch 4.1.2.1 If your heater is equipped with a CD21252….. Place a 6” 20G jumper wire with 2 small alligator clips (or the like) across the heater terminal strip numbers 2 and 3, which will bypass the aircraft thermostat. (Fig. 4) CAUTION: Be sure not to short any other terminals. With the heater running, verify that the outlet plenum temp. is approx. 250°. Adjust the temperature of the heat duct outlet distribution plenum to an average ambient temperature as follows: • For non-pressurized aircraft set switch to a low of 215º and a high of 255º. . NOTE: Adjustment is made by rotating a small 1/16” screw located next to the wires on the side of the switch. It may have a dab of inspectors lacquer over the screw. Rotation clockwise one turn will increase temperature approx. 20° F. Decrease temperature by turning counterclockwise (Fig 5). After sensor is adjusted, place small drop of tamper proof seal on adjustment screw to lock in settings so as to not change due to vibration. Use a product that can be easily removed for readjustment if necessary. Remove the jumper wire and verify that the temperature is controlled by the aircraft thermostat from low (approx. 75° F) to medium to high (approx. 250° F) which is what the cycling switch is set at. Remove the temperature probe sealing the hole with high temperature silicone. IN11005K1 Dated 3/15/07 Page 4 of 5 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 4.1.2.2 If your heater is not equipped with CD21252….. Upper limit adjustments should be made in accordance with aircraft manufacturer’s instructions. 4.1.3 Install the fuel pressure gauge (0-15). Tee into as shown. (Fig. 6) With the heater running, verify fuel pressure. • Preferred pressure is 8psi. (6.5psi min, 10psi max) Figure 6 4.1.4 Remove the fuel gauge installed in step 4.1.3. Leave the “tee” fitting and cap off for future pressure readings if desired. 4.2 Verify proper installation is completed in accordance with the aircraft maintenance manual. 4.2.1 Verify all wires are secure and free of obstruction and chaffing. 4.2.2 If the hoses need to be replaced, we recommend Sceet-6 (1 ½”) red from the blower to the heater and Ceet-6 (1 ½”) black from outside air to the blower. 4.2.3 For additional information see the “maintenance manual (MM10001)” included with this heater under “Testing after installation or overhaul.” 5. After installation, complete the operation and heat output tests specified in the C&D Associates, Inc. MM10001 Maintenance Manual for aircraft combustion heaters Rev L, dated 5/21/15 or later FAA approved revision. Tests should be accomplished in accordance with section 10.3 operational test, and 10.4 for heat output. Also in accordance with the “Instructions for Continued Airworthiness” “Preflight/Operational check and Shutdown Procedure.” Rev E dated 5-21-15. These FAA-approved Instructions for Continued Airworthiness must be complied with and become a permanent part of the Aircraft Operations and Procedures manual. FUEL SUPPLY FROM HEATER FUEL PUMP OR REGULATOR HEATER CONNECTION FUEL PRESSURE GAUGE 0-15 PSI FOR AV GAS CYCLING SW. ADJUSTMENT CYCLING SWITCH P/N 21252 TERMINAL STRIP JUMPER WIRE BYPASSING THERMOSTAT SENSOR (AIRCRAFT WIRES NOT INSTALLED) OVERHEAT SWITCH NUMBER PLATE Figure 4 Figure 5 IN11005K1 Dated 3/15/07 Page 5 of 5 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 6. Documentation: 6.1. Weight & Balance. 6.1.1. Remove old heater of 23 lbs. (verify weight), and install new heater kit of 28 lbs. The aircraft requires a weight and balance and a 337 must be completed and a copy of the STC attached. The logbook entry should contain the STC SA01566CH and PMA Supplement # 42. Original heater replacement is authorized by way of FAA form 337. Alteration of aircraft by way of STC or PMA supplemental number and date must be recorded in the appropriate aircraft records. 6.1.2. If unchanged removal of the Combustion Heater and the installation of the C&D Associates Products TSO- C20 approved heater will have no net effect on weight and balance or electrical load requirements. 6.2. Insert the following statement (label 21503 provided) in the aircraft flight manual: “C&D Associates Inc. Combustion heater has been installed in this aircraft. Please follow the aircraft-operating manual for combustion heater operating sequence and/or C&D Associates Inc. Instructions for airworthiness” located in MM10001 Rev I dated 8/1/14 or later FAA approved revision.” 6.3. Utilize existing aircraft combustion heater operating instructions or other FAA approved combustion heater operating instructions where applicable. 6.4. NOTE: South Wind AD 81-09-09 Combustion Heater Airworthiness Directive does not apply to the C&D Associates, Inc. Combustion Heater. 6.5. Electrical requirements: 12VDC. 6.6. Fuel consumption: Maximum operation __ gal/hour. DOCUMENTATION AND PARTS REQUIREMENT TABLE DOCUMENTATION Quantity 1. FAA/PMA Supplement # 42 ____ 2. Installation Instructions IN11005K1 ____ 3. Label for flight manual ____ 4. MM10001 Maintenance Manual ____ 5. Quality Assurance Certificate of Compliance #527 ____ 6. STC #SA01566CH ____ 7. 337 Form ____ PARTS S/N 1. Heater CD11005-1 ____ _______ 2. (1) Exhaust Extension Assembly 25119 ____ 3. (1) Blower Assembly 21414 ____ 4. (1) Fuel Pump Assy 29101 ____ 5. (1) Retainer Plate Assy 21673 ____ 6. (1) Bracket, Mount Assy 21521 ____ 7. (12”) 1 ½” Red Sceet 60199 ____ a. (2) Worm Drive Clamps 60900-20 8. (24”) 1 ½” Black Ceet 60198 ____ a. (2) Worm Drive Clamps 60900-20 9. (1) Drain Hose w/Clamps 21279 ____ 10. (1) Adj. Solid State Duct Sw. 21253 ____ ________ 11. (1) Switch, Rotary 20654 ____ 12. (1) Retainer Assy 20632 ____ 13. (13”) Fuel Line #3 w/ hardware 21081 ____ 14. (40”) Fuel Line #3 w/ hardware 21081 ____ Initials: ____________ Date:____________ IN11005K2 Dated 3/15/01 Page 1 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com INSTALLATION INSTRUCTIONS FOR HEATER KIT #2A P/N CD11005K2 For Piper Aircraft PA-23-250, PA-E23-250 (12VDC) Aztec S/N 27-1 thru 27-258, 27-365 thru 27-401, 27-403 thru 27-2297, 27-2299 thru 27-2330, 27-2332 thru 27-3049, 27-3051 thru 27-3153. READ COMPLETE INSTRUCTIONS BEFORE BEGINNING INSTALLATION This system has been built to be installed on an aircraft that conforms to that aircrafts original Type Certificate (TC). If this aircraft has been modified from the original TC, (modifications such as props, engines, fuel system etc.) contact C&D Associates, Inc. for possible adjustments to this installation. Accomplish all wiring in accordance with AC43.13-1B Chapter 11, Electrical Systems. Accomplish all plumbing in accordance with AC43.13-1B Chapter 8, Section 2, par. 8-31. LOG OF REVISIONS Rev. Description Pages Revised Date F Updated figures 5 and 6 and items list 4,5 10/22/13 G Reformatted instructions and changed testing section 1-5 5/7/15 NOTE: Fuel injected aircraft require fuel regulator P/N 20800. Carbureted aircraft require fuel pump P/N 21197. IN11005K2 Dated 3/15/01 Page 2 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 1. Follow the Aircraft Service Manual or other FAA approved source for removal of the existing combustion heater. 2. Install the C&D Associates, Inc., TSO-C20 Approved combustion heater utilizing the existing Aircraft Service Manual or other FAA approved source where applicable. 2.1 For ease of installation two “retainer plates” can be utilized to secure combustion heater to air frame. Install 1 each lengthwise in place of bolt location and anchor to airframe with supplied 60172 nut and 60177 washer. Set combustion heater in place and secure to retainer plates with 2 each supplied 7” worm drive clamps, making sure clamps sit completely over retainer plates on forward and aft edges. Tighten retainer plate nuts and 7” clamps. 2.2 Remove the old safety valve and fuel filter assembly from the firewall and return with old heater for core value. Install the new fuel pump P/N 21197 (carbureted aircraft only) or the remote fuel regulator shutoff (fuel injected only). Replace the fuel lines with those included with the kit. 2.3 Replace the old exhaust pipe, shroud and retainer with the new ones included with the heater kit. Secure the exhaust pipe and shroud assembly P/N 25118 with the clamp assembly. The new shroud retainer P/N 20632 is to replace the old one in the A/C skin. If needed trim the exhaust shroud to allow a 1/4” extension beyond the aircraft skin. The 1 ½” exhaust pipe should extend 2” beyond the skin of the aircraft, maintaining the same exhaust scarf aft creating vacuum in flight. 2.4 Combustion Air Blower: If room permits locate the combustion air blower on the heater using the mounting bracket P/N 21191B and two six inch clamps. (Figure 1) If room does not permit, discard the bracket and two clamps and install the combustion air blower above the heater on the existing shelf. Connect the combustion air hose (red) as shown. (Figure 2) Optional combustion air blower installation locations. 2.5 The adjustable duct switch P/N CD21253 is to be installed aft of the heater in the plenum. Make two 1/16" holes 2-5/8" apart in a convenient location. Half way between the 1/16" holes, drill a 1/2" hole for the thermistor and mount the switch using two sheet metal screws. 3. Electrical: This heater installation comes with a new heater control switch P/N CD20654. This switch replaces the old heater wiring, old heater control switch and high-low switch if equipped. The new switch rotates from the full counter clockwise position of “off” to “fan” and 10 positions to “full heat” in the full clockwise position. 3.1. Remote shutoff (Fuel injected only) or fuel pump: There is only one wire you may want to reuse. Locate this wire, marked H2B, running from the old heater terminal 2 to the safety valve on the firewall. In the new installation this wire will connect from the fuel pump or shutoff valve over to the new heater terminal strip number 2. 3.2. Heater Electrical Connection (Figure 3): Remove the old heater control switch. Locate and identify the wire running from the heater circuit breaker to the old heater switch. The new heater requires a 20 amp fuse. Marking FIGURE 1 FIGURE 2 IN11005K2 Dated 3/15/01 Page 3 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com on this old wire will be H3A. This wire is to be connected to the red wire on the new switch. Route the remaining wires (blue, white, and two yellow) to the new heater. Secure in route in accordance with AC 43.13- 1A Chapter 12 for Electrical applications. The blue wire from the new switch is for the vent fan and will be connected to the heater terminal strip number 6. The white wire is connected to the heater terminal strip number 1. 3.3. Thermostat (see step 2.5): Connect thermostat red wire to the heater terminal 2 and blue wire to terminal 3. The two yellow wires are to join the switches yellow wires, in any order. 3.4. Combustion Air Blower: Black wire to airframe ground, green wire (12V) to heater terminal strip #1. 3.5. Old Wiring: CAUTION: The old wire marked H3A or H3B is hot any time the master switch is on. Remove or secure the ends of the old wiring. Optional hour meter is connected to terminal #2. Optional overheat light may be connected to terminal #4 on the heater strip. FIGURE 3 4. TESTING 4.1 HEATER OPERATIONAL TEST AFTER INSTALLATION: IMPORTANT!! Please complete the followings steps after the new heater is installed in the aircraft. 4.1.1 (Heater terminal strip numbered 1 2 3 4 5 6). 4.1.2 Install a temperature probe (min 0-500° F) in the outlet plenum 6-8” aft of the heater. A good location would be approx. 6” aft of the heater or near the thermostat sensor. Usually you can find a small access point somewhere in the ducting aft of the heater. CAUTION: Verify thermal couple is not touching plenum internal wall. 4.1.3 If your heater is equipped with a CD21252….. Place a 6” 20G jumper wire with 2 small alligator clips (or the like) across the heater terminal strip numbers 2 and 3, which will bypass the aircraft thermostat. (Fig. 4) NOTE: Be sure not to short any other terminals. With the heater running, verify that the outlet plenum temp. is set properly. Adjust the temperature of the heat duct outlet distribution plenum as follows: For non-pressurized aircraft set switch to a low of 215º and a high of 255º. NOTE: Adjustment is made by rotating a small 1/16” screw located next to the wires on the side of the switch. It may have a dab of inspectors lacquer over the screw. Rotation clockwise one turn IN11005K2 Dated 3/15/01 Page 4 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com will increase temperature approx. 20° F. Decrease temperature by turning counterclockwise (Fig 5). After sensor is adjusted, place small drop of tamper proof seal on adjustment screw to lock in settings so as to not change due to vibration. Use a product that can be easily removed for readjustment if necessary. Remove the jumper wire and verify that the temperature is controlled by the aircraft thermostat from low (approx. 75° F) to medium to high (approx. 250° F) which is what the cycling switch is set at. Remove the temperature probe sealing the hole with high temperature silicone. 4.1.4 If your heater is not equipped with CD21252….. Upper limit adjustments should be made in accordance with aircraft manufacturer’s instructions. 4.1.5 Install the fuel pressure gauge (0-15). Tee into as shown. (Fig. 6) With the heater running, verify fuel pressure. • Preferred pressure is 8psi. (6.5psi min, 10psi max) Figure 6 4.1.6 Remove the fuel gauge installed in step 4.1.5. Leave the “tee” fitting and cap off for future pressure readings if desired. 4.2 Verify proper installation is completed in accordance with the aircraft maintenance manual. Verify all wires are secure and free of obstruction and chaffing. • If the hoses need to be replaced, we recommend Sceet-6 (1 ½”) red from the blower to the heater and Ceet-6 (1 ½”) black from outside air to the blower. • For additional information see the “maintenance manual (MM10001)” included with this heater under “Testing after installation or overhaul.” FUEL SUPPLY FROM HEATER FUEL PUMP OR REGULATOR HEATER CONNECTION FUEL PRESSURE GAUGE 0-15 PSI FOR AV GAS CYCLING SW. ADJUSTMENT CYCLING SWITCH P/N 21252 TERMINAL STRIP JUMPER WIRE BYPASSING THERMOSTAT SENSOR (AIRCRAFT WIRES NOT INSTALLED) OVERHEAT SWITCH NUMBER PLATE Figure 4 Figure 5 IN11005K2 Dated 3/15/01 Page 5 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 5. After installation, complete the operation and heat output tests specified in the C&D Associates, Inc. MM10001 Maintenance Manual for aircraft combustion heaters Rev L, dated 5/14/15 or later FAA approved revision. Tests should be accomplished in accordance with section X ‘C’ operational test, and ‘D’ for heat output. Also in accordance with the “Instructions for Continued Airworthiness” Step A “Preflight/Operational check and Shutdown Procedure.” Rev D dated 10-3-11. These FAA-approved Instructions for Continued Airworthiness must be complied with and become a permanent part of the Aircraft Operations and Procedures manual. 6. Documentation: 6.1. Weight & Balance. 6.1.1. Remove old heater of 23 lbs. (verify weight), and install new heater kit of 28 lbs. The aircraft requires a weight and balance and a 337 must be completed and a copy of the STC attached. The logbook entry should contain the STC SA01566CH and PMA Supplement # 42. Original heater replacement is authorized by way of FAA form 337. Alteration of aircraft by way of STC and PMA supplemental number and date must be recorded in the appropriate aircraft records. 6.1.2. If unchanged removal of the Combustion Heater and the installation of the C&D Associates Products TSO- C20 approved heater will have no net effect on weight and balance or electrical load requirements. 6.2. Insert the following statement (label 21503 provided) in the aircraft flight manual: “C&D Associates Inc. Combustion heater has been installed in this aircraft. Please follow the aircraft-operating manual for combustion heater operating sequence and/or C&D Associates Inc. Instructions for airworthiness” located in MM10001 Rev I dated 8/1/14 or later FAA approved revision.” 6.3. Utilize existing aircraft combustion heater operating instructions or other FAA approved combustion heater operating instructions where applicable. 6.4. South Wind AD 81-09-09 Combustion Heater Airworthiness Directive does not apply to the C&D Associates, Inc. Combustion Heater. 6.5. Electrical requirements: 12VDC. 6.6. Fuel consumption: Maximum operation __ gal/hour. IN11005K2 Dated 3/15/01 Page 6 of 6 Rev G dated 5/7/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com DOCUMENTATION AND PARTS REQUIREMENT TABLE DOCUMENTATION Quantity 1. FAA/PMA Supplement # 42 ____ 2. Installation Instructions IN11005K2 ____ 3. Label for flight manual ____ 4. MM10001 Maintenance Manual ____ 5. Quality Assurance Certificate of Compliance #527 ____ 6. STC #SA01566CH ____ 7. 337 Form ____ PARTS S/N 1. Heater CD11005-1 ____ ________ 2. (1) Exhaust Extension Assembly 25118 ____ 3. (1) Blower Assembly 21414 ____ 4. (1) Bracket Mount Assy 21521 ____ 5. (1) Fuel Pump Assy 29101 ____ 6. (2) Retainer Plate Assembly 21673 ____ 7. (12”) 1 ½” Red Sceet 60199 ____ a. (2) Worm Drive Clamps (1 ½”) 60900-28 8. (24”) 1 ½” x Black Ceet 60198 ____ a. (2) Worm Drive Clamps (1 ½”) 60900-28 ____ 9. (18”) Drain Hose w/Clamps 21279 ____ 10. (1) Adj. Solid State Duct Sw. 21253 ____ ________ 11. (1) Switch, Rotary 20654A ____ 12. (1) Retainer Assy 20632 ____ 13. (13”) Fuel Line #3 w/ hardware(carb only) 21081 ____ 14. (40”) Fuel Line #3 w/ hardware 21081 ____ 15. (1) Regulator, 7.5 20800 ____ a. (1) Elbow, 90° 60413 16. (1) Bracket, Mount 21191B ____ a. (2) Clamps (7 ¾) 60900-104 ____ 17. (2) Clamps (7 ¾) 60900-104 ____ Initials: ____________ Date:____________ IN 11006K2 Page 1 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com HEATER INSTALLATION INSTRUCTIONS FOR KIT #2B, P/N CD11006K2 For Piper Aircraft PA-E23-250, PA-23-250 (24VDC) Aztec S/N 27-259 thru 27-364, 27-402, 27-2298, 27-2331. READ COMPLETE INSTRUCTIONS BEFORE BEGINNING INSTALLATION This system has been built to be installed on an aircraft that conforms to that aircrafts original Type Certificate (TC). If aircraft has been modified from the original TC (modifications such as props, engines, fuel system etc.) contact C&D Associates, Inc. for possible adjustments to this installation. Accomplish all wiring in accordance with AC43.13-1B Chapter 11, Electrical Systems. Accomplish all plumbing in accordance with AC43.13-1B Chapter 8, Section 2, par. 8-31. 1. Follow the Aircraft Service Manual or other FAA approved source for removal of the existing combustion heater. 2. Install the C&D Associates, Inc., TSO-C20 Approved combustion heater utilizing the existing Aircraft Service Manual or other FAA approved source where applicable. 2.1. For ease of installation two “retainer plates” can be utilized to secure combustion heater to air frame. Install 1 each leangthwise in place of bolt location and anchor to airframe with supplied 60172 nut and 60177 washer. Set combustion heater in place and secure to retainer plates with 2 each supplied 7” worm drive clamps, making sure clamps sit completely over retainer plates on forward and aft edges. Tighten retainer plate nuts and 7” clamps. 2.2. Remove the old safety valve and fuel filter assembly from the firewall. For carbureted aircraft install the new fuel pump (CD21199) with the safety wired end cap down, using the legs of the pump as a template for the new bolt pattern. Replace the fuel lines with those included with the kit. 2.3. Replace the old exhaust pipe, shroud and shroud retainer with the new ones included with the heater kit. Secure the exhaust pipe and shroud with the exhaust clamp and pin assembly supplied with exhaust pipe. The shroud retainer will replace the old one in the A/C skin if desired. If needed trim the exhaust shroud to allow a ½” extension beyond the aircraft skin. The exhaust pipe should extend 2” beyond the skin of the aircraft, maintaining the same exhaust scarf aft and the shroud may be trimmed flush. 2.4. Combustion Air Blower: If room permits locate the combustion air blower on the heater using the mounting bracket P/N 21191B and two six inch clamps. (Figure 1) If room does not permit, discard the bracket and two clamps and install the combustion air blower above the heater on the existing shelf. Connect the combustion air hose (red) as shown. (Figure 2) IN 11006K2 Page 2 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com Optional combustion air blower installation locations. 2.5 The adjustable duct switch P/N CD21253 is to be installed aft of the heater in the plenum. Make two 1/16" holes 2-5/8" apart in a convenient location. Half way between the 1/16" holes, drill a 1/2" hole for the thermister and mount the switch using two sheet metal screws. 3. Electrical: This heater installation comes with a new heater control switch P/N CD20654. This switch replaces the old heater wiring, old heater control switch and high-low switch if equipped. The new switch rotates from the full counter clockwise position of “off” to “fan” and 10 positions to “full heat” in the full clockwise position. 3.1. Fuel pump (Carbureted aircraft only): There is only one wire you may want to reuse. Locate this wire, marked H2B, running from the old heater terminal 2 to the safety valve on the firewall. In the new installation this wire will connect from the fuel pump over to the new heater terminal strip number 2. 3.2. Heater Electrical Connection (Figure 3): Remove the old heater control switch. Locate and identify the wire running from the heater circuit breaker to the old heater switch. Marking on this old wire will be H3A. This wire is to be connected to the red wire on the new switch. Route the remaining wires (blue, white, and two yellow) to the new heater. Secure in route in accordance with AC 43.13-1A Chapter 12 for Electrical applications. The blue wire from the new switch is for the vent fan and will be connected to the heater terminal strip number 6. The white wire is connected to the heater terminal strip number 1. 3.3. Thermostat (see step 2.5): Connect thermostat red wire to the heater terminal 2 and blue wire to terminal 3. The two yellow wires are to join the switches yellow wires, in any order. 3.4. Combustion Air Blower: Black wire to airframe ground, red wire (24V) to heater terminal strip #1. 3.5. Old Wiring: CAUTION: The old wire marked H3A or H3B is hot any time the master switch is on. Remove or secure the ends of the old wiring. Optional hour meter is connected to terminal #2. Optional overheat light may be connected to terminal #4 on the heater strip. FIGURE 1 FIGURE 2 IN 11006K2 Page 3 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com FIGURE 3 4. TESTING 4.1 HEATER OPERATIONAL TEST AFTER INSTALLATION: IMPORTANT!! Please complete the followings steps after the new heater is installed in the aircraft. (Heater terminal strip numbered 1 2 3 4 5 6) , 6 5 4 3 2 1), 4 5 6 7 8 10) 4.1.1 Install a temperature probe (min 0-500° F) in the outlet plenum 6-8” aft of the heater. A good location would be approx. 6” aft of the heater or near the thermostat sensor. Usually you can find a small access point somewhere in the ducting aft of the heater. CAUTION: Verify thermal couple is not touching plenum internal wall. 4.1.2 Setting upper limit temperature upper limit switch 4.1.2.1 If your heater is equipped with a CD21252….. Place a 6” 20G jumper wire with 2 small alligator clips (or the like) across the heater terminal strip numbers 2 and 3, which will bypass the aircraft thermostat. (Fig. 4) CAUTION: Be sure not to short any other terminals. With the heater running, verify that the outlet plenum temp. is approx. 250°. Adjust the temperature of the heat duct outlet distribution plenum to an average ambient temperature as follows. • For non-pressurized aircraft set switch to a low of 215º and a high of 255º. • For pressurized aircraft set switch to a low of 190˚ and a high of 225˚. NOTE: Adjustment is made by rotating a small 1/16” screw located next to the wires on the side of the switch. It may have a dab of inspectors lacquer over the screw. Rotation clockwise one turn will increase temperature approx. 20° F. Decrease temperature by turning counterclockwise (Fig 5). After sensor is adjusted, place small drop of tamper proof seal on adjustment screw to lock in settings so as to not change due to vibration. Use a product that can be easily removed for readjustment if necessary. Remove the jumper wire and verify that the temperature is controlled by the aircraft thermostat from low (approx. 75° F) to medium to high (approx. 250° F) which is what the cycling switch is set at. Remove the temperature probe sealing the hole with high temperature silicone. IN 11006K2 Page 4 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 4.1.2.2 If your heater is not equipped with CD21252….. Upper limit adjustments should be made in accordance with aircraft manufacturer’s instructions. 4.1.3 Install the fuel pressure gauge (0-15). Tee into as shown. (Fig. 6) With the heater running, verify fuel pressure. • Preferred pressure is 8psi. (6.5psi min, 10psi max) Figure 6 4.1.4 Remove the fuel gauge installed in step 4.1.3. Leave the “tee” fitting and cap off for future pressure readings if desired. 4.2 Verify proper installation is completed in accordance with the aircraft maintenance manual. 4.2.1 Verify all wires are secure and free of obstruction and chaffing. 4.2.2 If the hoses need to be replaced, we recommend Sceet-6 (1 ½”) red from the blower to the heater and Ceet-6 (1 ½”) black from outside air to the blower. 4.2.3 For additional information see the “maintenance manual (MM10001)” included with this heater under “Testing after installation or overhaul.” 5. After installation, complete the operation and heat output tests specified in the C&D Associates, Inc. MM10001 Maintenance Manual for aircraft combustion heaters Rev L, dated 5/21/15 or later FAA approved revision. Tests should be accomplished in accordance with section 10.3 operational test, and 10.4 for heat output. Also in accordance with the “Instructions for Continued Airworthiness” “Preflight/Operational check and Shutdown Procedure.” Rev E dated 5-21-15. These FAA-approved Instructions for Continued Airworthiness must be complied with and become a permanent part of the Aircraft Operations and Procedures manual. FUEL SUPPLY FROM HEATER FUEL PUMP OR REGULATOR HEATER CONNECTION FUEL PRESSURE GAUGE 0-15 PSI FOR AV GAS CYCLING SW. ADJUSTMENT CYCLING SWITCH P/N 21252 TERMINAL STRIP JUMPER WIRE BYPASSING THERMOSTAT SENSOR (AIRCRAFT WIRES NOT INSTALLED) OVERHEAT SWITCH NUMBER PLATE Figure 4 Figure 5 IN 11006K2 Page 5 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 6. Documentation: 6.1. Weight & Balance. 6.1.1. If changed remove old heater of 23 lbs (verify weight). And install new heater kit of 28 lbs. The aircraft requires a weight and balance and a 337 must be completed and a copy of the STC attached. The logbook entry should contain the STC #SA01566CH and PMA Supplement # 42. Original heater replacement is authorized by way of FAA form 337. Alteration of aircraft by way of STC or PMA supplemental number and date must be recorded in the appropriate aircraft records. 6.1.2. If unchanged removal of the Combustion Heater and the installation of the C&D Associates Products TSO- C20 approved heater will have no net effect on weight and balance or electrical load requirements. 6.2. Insert the following statement (label 21503 provided) in the aircraft flight manual: “C&D Associates Inc. Combustion heater has been installed in this aircraft. Please follow the aircraft-operating manual for combustion heater operating sequence and/or C&D Associates Inc. Instructions for airworthiness” located in MM10001 Rev I dated 8/1/14 or later FAA approved revision.” 6.3. Utilize existing aircraft combustion heater operating instructions or other FAA approved combustion heater operating instructions where applicable. 6.4. Electrical requirements: 24VDC. 6.5. Fuel consumption: Maximum operation __ gal/hour. IN 11006K2 Page 6 of 5 3-15-01 Rev F dated 5/07/15 302 POST ROAD, BUCHANAN, MI, 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com DOCUMENTATION AND PARTS REQUIREMENT TABLE DOCUMENTATION Quantity 1. FAA/PMA Supplement # 42 ____ 2. Installation Instructions IN11006K2 ____ 3. Label for flight manual ____ 4. MM10001 Maintenance Manual ____ 5. Quality Assurance Certificate of Compliance #527 ____ 6. STC #SA01566CH ____ 7. 337 Form ____ PARTS S/N 1. Heater CD11006-1 ____ ________ 2. (1) Exhaust Assembly 25118 ____ 3. (1) Bracket, Mount Assy 21521 ____ 4. (2) Bolt, Hex SS 10/32 x 5/16 60106 ____ 5. (1) Fuel Pump 29102 ____ 6. (1) Blower Assembly 21415 ____ 7. (2) Retaining Plate Assy 21673 ____ 8. (1) Bracket, Mount 21191B ____ a. (2) Clamps (7 3/4”) 60900-104 9. (1) Drain Hose w/Clamps 21279 ____ 10. (1) Adj. Solid State Duct Sw. 21253 ____ ________ 11. (1) Switch, Rotary 20654 ____ 12. (1) Retainer Assembly 20632 ____ 13. (13”) Fuel Line #3 w/ hardware 21081 ____ 14. (40”) Fuel Line #4 w/ hardware 21081 ____ 15. (12”) 1 ½” x 12” Sceet-6 60199 ____ a. (2) Worm Drive Clamps 60900-28 16. (24”) 1 ½” x 24” Ceet-6 60198 ____ a. (2) Worm Drive Clamps 60900-28 Initials: ____________ Date:____________




