Remove/install combustion air blower unit - AR83.70-P-5555C

MODEL 129 as of 1.6.97, 215, 220, 240 with CODE (228) Stationary heater 

Fig 1: Identifying Combustion Air Blower Unit Components

	Removing
1	Remove heater unit	Model 129.	AR83.70-P-5302C
		Models 215, 220.	AR83.70-P-5302MA
		Model 240.	AR83.70-P-5302H
2.1	Remove coolant circulation pump	Model 129.	AR83.70-P-5700C
		Model 240.	AR83.70-P-5700H
3	Disconnect cover (3) from edge connector
4	Unclip connector of combustion air blower (2) to the edge connector
5	Remove screws (9)
6	Disconnect combustion-air blower unit (1) from burner housing (5) and remove seal (7)
7	Remove seal (8) of fuel suction-nozzle (6) from housing of the combustion-air blower unit (1)
	Install
8	Insert seal (8) of fuel suction-nozzle into housing of the combustion-air blower unit (1)	Use new gasket.
9	Place seal (7) on to the burner housing (5)	Use new gasket.
10	Partially screw in combustion-air blower unit (1), turn in screws (9) and tighten	When mounting the combustion-air blower unit make sure the fuel suction nozzle (6) is correctly positioned.
		129, 215, 220. Screw for stationary heater combustion air unit.	*BA83.70-P-1001-01A
		240. Screw for stationary heater combustion air unit.	*BA83.70-P-1001-01C
11	Connect combustion air blower connector (2) to the control unit's edge connector	It is not possible to interchange the connectors as these are coded and thus polarity safeguarded.
12	Put cover (3) back onto the burner housing (5) and let it snap into place
13.1	Install coolant recirculation pump	Model 129.	AR83.70-P-5700C
		Model 240.	AR83.70-P-5700H
14	Install heater	Model 129.	AR83.70-P-5302C
		Models 215, 220.	AR83.70-P-5302MA
		Model 240.	AR83.70-P-5302HA
15	Bleed coolant circuit after installing heater unit	Model 129.	AR83.70-P-5302-01C
		Model 215, 220, 240.	AR83.70-P-5302-01M
16.1	Stationary heater (STH) diagnosis, function check	Model 129.	AD83.70-P-3003A
	Risk of explosion  caused by fuel vapors igniting, risk of poisoning  caused by inhaling combustible gases and risk of injury  caused by burns during and after operation of heater unit	Do not operate stationary heater, auxiliary heater or engine with heater booster in closed areas or when refueling. Allow heater unit to cool down after operation and wear protective gloves.	AS83.70-Z-0002-01A
16.2	Start up stationary heater	Model 215, 220, 240. Refer to Star diagnosis If the STH heater unit (A6) switches off automatically before reaching its operating temperature and cannot be restarted again, a fault interlock is present. ↓ To clear malfunction interlock, refer to Star Diagnosis.

STATIONARY HEATER

HEATER UNIT OF STATIONARY HEATER