AirComm Corporation Bell 429 Heating System 429H201M1 Rev3 User Manual

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.1 Cabin Heater General Arrangement 
(View left looking inboard)  

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.2 Cabin Heater General Arrangement 
(View looking down)  

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.3 Engine Compartment Bleed Air Plumbing 
Engines to Firewall Shutoff Valve 
(View looking down) 
429H-5050-109 Tube 
ES26192-1 
Shutoff Valve 
RH Engine (Ref)LH Engine (Ref)
429H-5050-113 
Tube
S-9740EC-3 Check Valve 
429H-5050-107 Tube 
ES41146-1 Blkhd Fitting 
429H-5054-1 Nut  
2X NAS1149C1490R Washer 
S-9740EC-3 Check Valve...

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.4 Bleed Air Plumbing Schematic – Firewall Shutoff 
Valve to Heater System Control Valve 
Heater System 
Control Valve 
429H-5038-133 Tube
429H-5038-131 Tube 
429H-5038-129 Tube 429H-5038-127 Tube
429H-5038-125 Tube
429H-5038-141 Tube
429H-5038-139 Tube 429H-5038-119 Tube
429H-5038-117 Tube 
Firewall 
ES26192-1 Shutoff Valve
Cabin...

HEATER SERVICE MANUAL 429H-201M-1 
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To Aft 
Cabin 
Heater  
Ejector 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 3.5 Bleed Air Plumbing Schematic – Heater 
System Control Valve to Heater Ejectors 
Heater System 
Control Valve  429H-5040-111  
Tube  429H-5032-155 Tube 
429H-5040-109  
Tube 
429H-5034-143  
Tube 
429H-5032-157 Tube 
429H-5040-103 Tube  429H-5040-101 Tube 429H-5040-105 Tube 
429H-5040-107 Tube...

HEATER SERVICE MANUAL 429H-201M-1 
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From Heater  
System Control 
Valve 
Figure 3.6 Plumbing – Defogger 
(View looking down & aft) 
429H-6632-1
LH Spur Duct Assy
429H-6632-2
RH Spur Duct Assy
429H-5032-155 
 Tube 
429H-5032-157 Tube 429H-5032-163 Tube
429H-5032-159 Tube
AN815-8D Union 
S-5002EC-12 Sleeve 
ES41158-6-6-8 
Tee Fitting 
S-6406EC-6 (newer 
configuration) OR 
S-6406ED-4...

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.7 Forward Crew Heater Ejectors 
(View looking forward and up) 
(LH shown, RH opposite)  

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.8 Heater Ejector Installation 
(View looking down) 
429H-6610-2 
Ejector, RH 
429H-6622-1 
Heater Ejector Outlet 
429H-6634-1 
Floor Outlet 
429H-6634-1 
Floor Outlet  429H-6618-1 Tube 
429H-6618-1 Inlet 
429H-6618-1 Inlet   
429H-6618-1 Tube 429H-6622-1 
Heater Ejector Outlet 
429H-6610-1 
Ejector, LH  429H-6602-4 
Heater Ejector,...

HEATER SERVICE MANUAL 429H-201M-1 
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Figure 3.9 Windshield  Defog System and Defog Ejectors 
(View looking aft) 
Existing  Ducting (2 pls) 
Existing Defog 
Plenum (2 pls) 
Existing Defog/Duct  
Switch Box (2 pls) 
429H-5032-161 
LH Tube Assy (#6) 
Existing  Fresh Air Box  429H-5032-163 
RH Tube Assy (#6) 
Existing  Elbow (2 pls)  Defog Ejector   Defog Ejector  

HEATER SERVICE MANUAL 429H-201M-1 
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Thermal Snap Switch 
Figure 3.10 Cabin Heater System Thermal Snap Switches 
Minimum 0.8 inch clearance between 
Snap Switch and Bleed Air Line