HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7
LAKE LA 4/200 · Maintenance Manual
Overview
This document provides detailed installation instructions for a combustion heater kit designed for the Lake LA-4 series aircraft. It includes preparation steps, installation procedures, and testing protocols to ensure proper functionality and safety of the heater system.
- Installation is for Lake LA-4, LA-4A, LA-4P, LA-4-200, and Lake 250 aircraft.
- Follow FAA approved sources for removal and installation procedures.
- Wiring and plumbing must comply with AC43.13-1B standards.
- Heater operational tests must be completed after installation.
- Adjustments to the heater's temperature settings are necessary for optimal performance.
- Verify all connections and secure wiring to prevent chafing.
- Use specified parts and tools for installation to ensure safety.
- Refer to the maintenance manual for additional testing and operational checks.
Document
Source
Originally published by janitrol.aero. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Maintenance Manual
- Year ·
- 2015
- File size ·
- 519 KB
- Publisher ·
- janitrol.aero
- Language ·
- en
What is the HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7?
The HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7 is a maintenance manual for the LAKE LA 4/200, dated 2015.
Where does the HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7 come from?
This copy of the HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7 was originally published by janitrol.aero and is hosted on Sprinkle as a free, searchable reference copy.
What year was the HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7 published?
The HEATER INSTALLATION INSTRUCTIONS FOR KIT, P/N CD12011K7 — the LAKE LA 4/200 maintenance manual on file — is dated 2015.
Most owners only have the POH. Here's the essential set for the LAKE LA 4/200.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
More LAKE LA 4/200manuals & documents
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In this document
Preparation
Instructions for removing the existing heater and preparing for the installation of the new combustion heater.
Installation
Step-by-step guide for installing the heater, including mounting brackets, blower installation, and fuel line connections.
Testing
Procedures for conducting operational tests after installation, including temperature and fuel pressure checks.
Safety Notes
Cautions regarding electrical connections, temperature settings, and ensuring proper installation to avoid hazards.
Log of Revisions
Details of revisions made to the document, including formatting and updates to operational tests.
Electrical
Instructions for wiring the heater control switch and ensuring proper grounding.
Safety notes
- Verify thermal couple is not touching plenum internal wall.
- Be sure not to short any other terminals when using jumper wires.
- Ensure all wires are secure and free of obstruction and chafing.
- Use high temperature silicone to seal any holes after installation.
- Follow manufacturer’s instructions for upper limit adjustments if not equipped with specific parts.
Full document text
IN12011K7 Page 1 of 8 6/25/01 Rev I dated 8/11/15 302 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, P/N CD12011K7 For Lake LA-4, LA-4A, LA-4P, LA-4-200, Lake 250 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. LOG OF REVISIONS Rev. Description Pages Revised Date I Reformatted, updated Op test after install section All 8/11/15 1. PREPARATION 1.1. Heater Removal: Follow the Aircraft Service Manual or other FAA approved source for removal of the existing combustion heater. 1.2. 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. INSTALLATION 2.1. Heater Mounting Bracket Installation: (see figure #5) 2.1.1. Place a centerline mark on top of the cabin from the engine pylon forward 30” for alignment of the heater mounts and bonnet. Remove the vent outlet panel located aft of the overhead control panel. 2.1.2. Doubler plate P/N 20710: At station 1470 identified approximately 12” forward of the engine pylon, where the aircraft skin overlaps. Remove the row of rivets (three on either side of the C/L), which holds the overlapped skins to a rib. Place the doubler P/N 20710 with the rivet locator line marked on the doubler over the removed rivets line (2 5/8 hole aft) and equally over the centerline mark. Transfer the existing rivet hole locations to the new doubler and temporarily fasten into place. Without moving the doubler, transfer the other holes in the new doubler to the roof of the aircraft. Install the new doubler using the original rivet pattern. Install the heat transfer adapter p/n 20709 (longer end down) through the 2 5/8” hole. The ¼” bead will keep the adapter from passing through the hole. 2.1.3. Aft Heater Support Assembly P/N 20706: Mount this assembly, flanges forward, onto the new doubler P/N 20710 using three AN3-5A bolts, six AN960-10L washers and three AN365-10132 self-locking nuts. IN12011K7 Page 2 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 2.1.4. Forward Heater Support Bulkhead P/N 20704: Locate this support (flanges aft) over the center line (mounting hole to mounting hole) 19” from the aft heater support. Install using 3 each AN3-5A bolts, six AN960-10L washers, and three AN365-10/32 self-locking nuts. 2.2. Combustion Air Blower Installation: 2.2.1. Mount the combustion blower (housing to left side) onto the doubler just forward of the pylon, secure with four 10/32” self-locking nuts. Adjust motor clamps as needed for clearance when bonnet is installed. 2.2.2. Install temporarily the new heat distribution plate. P/N 20708. Install the transfer adapter P/N 20709 thru the 2 5/8” hole from above to rest on the distribution plate. From above, mark the hole and cut the distribution plate as needed to allow the transfer adapter to extend down through the distribution plate. Remove the distributor plate, P/N 20708 until step #9. 2.3. Aft Bonnet Section: (see figure #5) 2.3.1. Exhaust opening on the right side of bonnet. Measure along the lower mounting flange from the front 7 ¾” using a 90º square measure up 3 ½”. This will be the location of a 2 1/8” hole to be cut in the bonnet. After the hole is cut, use a square to extend the opening down to within ½” of the bottom flange. 2.3.2. Combustion Air Blower Inlet: On the left side measure from the front 18 ¼” along the lower mounting flange and up with the square 2 ½”. Make a 2” hole. 2.3.3. Drain location: On the left side, measure from the front 1” along the lower mounting flange and up with the square 1”. Make a ½” hole for the drain. 2.4. Installing the heater: 2.4.1. Insert the front of the heater into the front bulkhead mount and aft cradle mount. Adjust heater so that the forward drain is square with the roof, and the outlet plenum adapter fits into the transfer adapter P/N 20709, which may need to be trimmed for a secure fit. Before tightening the 6” clamp for final installation, verify that, with the bonnet installed, the exhaust of the heater is in correct alignment with the top of the bonnet exhaust cut out. After a trial fit of the bonnet, tighten the 6” clamp on the aft mount. Connect the Combustion Blower to the combustion air inlet adapter by using the 1 ½” sceet hose and clamps. 2.5. Regulator/Fuel Pump Installation: Install at the aft, left side, of the rear heater support assembly. For fuel injected A/C (20-35 PSI supplied) install the fuel regulator with the out port up. Aircraft that have carburetor (1-7 PSI supplied) install the fuel pump with the removable filter cap down. 2.6. Fuel Line Connections: Install the #4 fuel line from heater to “out” port of fuel regulator or fuel pump. Connect fuel line from fuel regulator or fuel pump to existing fuel line “T” fitting. 2.7. Fuel Drain Line: Fixed line from heater to outboard of bonnet, left side. Rubber drain line, fuel box to “y” on fixed line. 2.8. Electrical: 2.8.1. Provide a 20 amp fused circuit up to the existing overhead panel just forward of the new heat distributor housing. Install the new heater control switch in a convenient location in this panel using the new “heater control” decal as a pattern. Route the white, blue, and two yellow wires back to the wire bundle
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going up through the cabin roof. Secure as needed. 2.8.2. Heater Control Switch Wire Connections: Red to 20 amp circuit breaker, white to terminal #1 on heater, blue to terminal #6 on heater, yellow to thermostat sensor yellow wires (non polarity), located on back of heater outlet plenum. 2.8.3. Thermostat Sensor: On back of outlet plenum “red wire to heater terminal #2, blue wire to heater terminal #3, black to ground.” 2.8.4. Combustion Air Blower: Red to heater terminal #1, black to #5(ground) IN12011K7 Page 3 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 2.8.5. Regulator or Fuel Pump: Regulator - “green wire to heater terminal #2, black wire to heater terminal #5.” Fuel Pump – “wire to heater terminal #2.” 2.8.6. Hour Meter (optional): wire to terminal #2, wire to #5 (ground). 2.8.7. Heater Terminal Strip: Terminal #5 to airframe for grounding purposes. 2.8.8. Braided ground strap also to airframe for proper grounding. 2.9. Place the assembled bonnet over the installed heater and transfer the flange holes to the aircraft roof. Install eleven 8/32” rivnuts in the roof and reinstall the bonnet using eleven 8/32” x 5/8” screws. Install the upper fairing P/N 20702. 2.9.1. Exhaust Shield P/N 20711: Place over the exhaust and transfer the four mounting holes to the bonnet. Install four 8/32” rivnuts into the bonnet and secure the shield in place with four 8/32” x ½” screws. 2.9.2. Fairing P/N 20702: Install over the new bonnet, locating the two lower holes as needed to match the rivnuts in the bonnet. 2.10. Heat Distribution Plate and Housing P/N’s 20708 and 20707 installation: Reinstall the Distribution plate P/N 20708. Make sure the adapter P/N 20709 is extending thought the 2 5/8” hole and seal with silicone. Heat distribution outlets may be installed in the distribution housing P/N 20707 as desired. Secure the housing through the plate and onto the cabin ceiling. 3. TESTING 3.1 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) 3.1.1 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. IN12011K7 Page 4 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 3.1.2 Setting upper limit temperature upper limit switch 3.1.2.1 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. 2) 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 3). 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. CYCLING SW. ADJUSTMENT CYCLING SWITCH P/N 21252 TERMINAL STRIP JUMPER WIRE BYPASSING THERMOSTAT SENSOR (AIRCRAFT WIRES NOT INSTALLED) OVERHEAT SWITCH NUMBER PLATE Figure 2 Figure 3 IN12011K7 Page 5 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com 3.1.2.2 If your heater is not equipped with CD21252….. Upper limit adjustments should be made in accordance with aircraft manufacturer’s instructions. 3.1.3 Install the fuel pressure gauge (0-15). Tee into as shown. (Fig. 4) With the heater running, verify fuel pressure. • Preferred pressure is 8psi. (6.5psi min, 10psi max) Figure 4 3.1.4 Remove the fuel gauge installed in step 3.1.3. Leave the “tee” fitting and cap off for future pressure readings if desired. 3.2 Verify proper installation is completed in accordance with the aircraft maintenance manual. 3.2.1 Verify all wires are secure and free of obstruction and chaffing. 3.2.2 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. 3.2.3 For additional information see the “maintenance manual (MM10001)” included with this heater under “Testing after installation or overhaul.” 4. 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. 5. DOCUMENTATION: 5.1. Weight & Balance. 5.1.1. If changed remove old heater of __ lbs (verify weight). And install new heater kit of 40 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 #SA01526CH and PMA Supplement #26. 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. 5.1.2. 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. 5.2. 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.” 5.3. Utilize existing aircraft combustion heater operating instructions or other FAA approved combustion heater operating instructions where applicable. 5.4. Electrical requirements: 12VDC at 18Amp. 5.5. Fuel consumption: Maximum operation 1.25 gal/hour. FUEL SUPPLY FROM HEATER FUEL PUMP OR REGULATOR HEATER CONNECTION FUEL PRESSURE GAUGE 0-15 PSI FOR AV GAS IN12011K7 Page 6 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com C&D ASSOCIATES, INC. R HOBBS (OP FUEL PU 6 432 65 &/OR SHUTOF 1 ER (OPT) OMBUSTION HEATER POWER FIGURE 5 OPTIONAL ITEMS AVAILABLE NOT STANDARD ON KIT IN12011K7 Page 7 of 8 6/25/01 Rev I dated 8/11/15 302 POST ROAD, BUCHANAN, MI 49107 USA PH: 269-695-7469 FX: 269-695-6004 WEB: www.CDaircraftheaters.com EMAIL: sales@aircraftheater.com OVERHEAT SWITCH STEP 3B COMBUSTION AIR INLET STEP 3C EXHAUST STEP 3A 18.250 2.500 FIGURE 6, BONNET, AFT SECTION P/N 20701 1.000 1.000 DRAIN STEP 3D Ø0.500 4.625 0.429 3.500 Ø2.000 Ø1.000 7.750 Ø2.125 3.125 FAIRING 20702 IN12011K7 Page 8 of 8 6/25/01 Rev I dated 8/11/15 302 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 #26 ____ 2. FAA/STC # SA01526CH ____ 3. Installation Instructions IN12011K7 ____ 4. Label for flight manual ____ 5. MM10001 Maintenance Manual ____ 6. Quality Assurance Certificate of Compliance #527 ____ 7. 337 Form ____ PARTS S/N 1. (1) Heater CD12011-1 ____ _______ 2. (1) Bonnet, Front (Optional) 20700 ____ 3. (1) Bonnet, Aft (Optional) 20701 ____ 4. (1) Fairing (Optional) 20702 ____ 5. (1) Bulkhead 20704 ____ 6. (1) Plenum Assy 20705 ____ 7. (1) Support Assy 20706 ____ 8. (1) Housing, Heat Distributor (Optional) 20707 ____ 9. (1) Eyeball Swivel Vent (Optional) 60464 ____ 10. (1) Combustion Air Inlet 21356E ____ 11. (1) Exhaust Shield 20711 ____ 12. (2) Clamps 60900-28 ____ 13. (1) 90 deg. elbow 60159 ____ If Fuel Injected: 14. (1) Regulator Assy 29125 ____ _______ If Carborated: 15. (1) Fuel Pump Assy 29100 ____ 16. (1) Sceet-6 Hose 1 ½” ID X 24” ____ 17. (1) Drain Line #4 21372 ____ 18. (2)(2’) Fuel line assy 20715 ____ 19. (1) Rubber Drain Hose 21279 ____ 20. (1) Switch, Rotary 20654 ____ 21. (2) Clamp 60900-44 ____ 22. (1) Combustion Air Intake Retainer 21790 ____ Initials: ____________ Date:____________