Fresh air heater units 1969 on

Fresh Air Heater Units
Care must be taken to positively identify your type of heater before ordering parts; while many parts are shared between heater designs that look outwardly similar, some parts are in fact unique to each design. Industrial strife in UK factories during the 1970s meant that different versions of the Saloon and Estate heater were triple-sourced from different supplying factories at the same time, as insurance against lost production! This situation created a bit of a minefield as regards matching the right parts to the right heater - particularly where fan motors are concerned. You have been warned.

Plastic or Metal Fresh Air Heater with Single Speed Fan
Saloon and Estate 1969-84
Van and Pick Up 1980 approx. to 1984
Cold climate markets - Canada, Denmark, Finland, Iceland, Norway, Sweden and Switzerland - in the 1970s received uprated fan motor versions of the standard heater. In fact, by 1978 Canada was taking a heater with separate blower unit, quite removed from the standard item. In all other respects the cold climates heaters accept the parts listed here.

Note that some early 1970s 850 Saloons and export 1000 Saloons were theoretically equipped with a recirculatory heater as standard rather than the fresh air heater described here (virtually all customers opted for the fresh air unit anyway!). Recirculatory heaters are detailed in the next section of this catalogue.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
1	CZH636	HEATER ASS'Y, fresh air, with 2.8kW fan	1	1969-74, plastic case.
	24A3418	HEATER ASS'Y, fresh air, with 2.8kW fan	1	1969-84, metal case, Smiths manufacture.
	CZH4039	HEATER ASS'Y, fresh air, with 2.8kW fan	1	1974-80, metal case, Sofica manufacture.
	24A3419	HEATER ASS'Y, fresh air, with 4kW fan	1	1969-84, cold climates (Canada and Sweden 1969-72).
	CZH2873	HEATER ASS'Y, fresh air, with 4kW fan	1	1972-77, Canada and Sweden.
	CZH4168	HEATER ASS'Y, fresh air	1	1978-80, Canada.
	ADU1002	BLOWER UNIT, fresh air	1	1978-80, Canada.
2	37H4911	MATRIX, heater, new	1	Plastic case heaters.
	37H7216	MATRIX, heater, new	1	Metal case heaters.
3	17H1797	SEAL, around matrix	1
4	37H4912	MOTOR ASSEMBLY, fan, 2.8kW	1	Plastic case heaters.
	37H7214	MOTOR ASSEMBLY, fan, 2.8kW	1	Metal case heater, Smiths manufacture.
	37H8592	MOTOR ASSEMBLY, fan, 2.8kW	1	Metal case heater, Sofica manufacture.
5	17H8108	FAN, RH mounting	1
6	BAU2329	FAN, LH mounting	1
7	17H6836	CLIP, fan to motor	2
	27H602	COLLET, fan to motor	2	Alternative to clip.
8	BAU1924	PANEL ASS'Y, control	1	Not Canada or Sweden 1969-75.
9	BAU1923	KNOB, control	1	Not Canada or Sweden 1969-75.
10	CZH1409	CONTROL, remote	1	Canada and Sweden 1969-75.
11	CZH1410	KNOB, remote control	2	Canada and Sweden 1969-75.
12	PMZ308	SCREW, knob to remote control	2	Canada and Sweden 1969-75.
13	LWZ403	WASHER, shakeproof	2	Canada and Sweden 1969-75.
14	CZH1432	CABLE, air flow control	1	Canada and Sweden 1969-75.
15	CZH1433	CABLE, temperature control	1	Canada and Sweden 1969-75.
16	YUF101090	SWITCH, fan control, single speed	1
17	24A2753	ADAPTOR, demister hose	2	Plastic case heaters.
18	24A2752	SEAL, demister hose	2	Plastic case heaters.
19	GHF221	NUT, nyloc, unit to body	2
20	PWZ104	WASHER, plain	2
21	AB610071	SCREW, self tapping, unit to body	2	Saloon and Estate.
	AB608051	SCREW, self tapping, unit to body	2	Van and Pick Up.
22	GHF713	NUT, Spire	2	Saloon and Estate.
	GHF712	NUT, Spire	2	Van and Pick Up.

Metal Fresh Air Heater with Single Speed Fan
1984-92
This heater may be identified from pre-1984 metal heaters in two ways. Firstly, the matrix inlet and outlet pipes are of 5/8" diameter (all previous heaters had 1/2" diameter pipework). Secondly, the inlet and outlet pipes are only 2" apart, measured from pipe centres - on pre-1984 heaters the distance between pipes is 6".

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
23	JEC10109	HEATER ASS'Y, fresh air, with 2.8kW fan	1	Standard fitment.
	BMP363	HEATER ASS'Y, fresh air, with 4kW fan	1	Cold climates 1984-88.
24A	BAU5043	MATRIX, heater, new	1
24B	JEP10007	FLANGE PLATE AND PIPES KIT, matrix	1	Repairs matrix inlet and outlet pipes.
25	17H1797	SEAL, around matrix	1
26	JGC10008	MOTOR ASS'Y, with two fans, 2.8kW	1
27	BAU1924	PANEL ASS'Y, control	1
28	BAU1923	KNOB, control	1
29	YUF101090	SWITCH, fan control, single speed	1
30	GHF221	NUT, nyloc, unit to body	2
31	PWZ104	WASHER, plain	2
32	AB610071	SCREW, self tapping, unit to body	2
33	GHF713	NUT, Spire	2

Plastic Fresh Air Heater with Single Speed Fan
1992-96
Apart from the fact that this heater is plastic-bodied as opposed to the previous metal bodied item, the other easy way to distinguish this heater is once again by the matrix inlet and outlet pipes. On 1992 on heaters, each pipe comes out of the side of the casing and turns upwards through a right angle; on pre-1992 heaters the pipes simply point straight out of the side of the casing. Also, the demister ducting was enlarged from 1 1/4" to 1 3/4" from 1992.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
34	JEC10112	HEATER ASS'Y, fresh air	1
35A	JEF10005	MATRIX, heater, new	1	Includes inlet and outlet pipes.
35B	JEP10008	FLANGE PLATE AND PIPES KIT, matrix	1	Stainless steel. Repairs matrix inlet and outlet pipes.
36	JGC100110	MOTOR ASS'Y, with one fan	1
37	BAU1924	PANEL ASS'Y, control	1
38	BAU1923	KNOB, control	1
39	YUF101090	SWITCH, fan control, single speed	1
40	GHF221	NUT, nyloc, unit to body	2
41	PWZ104	WASHER, plain	2
42	AB610071	SCREW, self tapping, unit to body	2
43	GHF713	NUT, Spire	2

Plastic Fresh Air Heater with Two Speed Fan
1997 On
The 1997 on heater casing was a completely new design compared to the 1992-96 item, but in fact it shared some major componentry such as the fan and matrix. The biggest engineering difference was the inclusion of a resistor pack, allowing two speed fan control (and a two speed switch to suit, of course). One seemingly insignificant change was to a plastic rather than metal control panel, ending at last the vibrational 'zizzle' noise the Mini cabin had suffered for the last 27 years!

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
44	JEC101790	HEATER ASS'Y, fresh air	1
45A	JEF10005	MATRIX, heater, new	1	Includes inlet and outlet pipes.
45B	JEP10008	FLANGE PLATE AND PIPES KIT, matrix	1	Stainless steel. Repairs matrix inlet and outlet pipes.
47	JFC101620PMA	PANEL ASS'Y, control	1
48	BAU1923	KNOB, control	1
49	YUF101410	SWITCH, fan control, two speed	1
50	JGM100100	RESISTOR PACK, fan speed control	1
51	JGK100140	HARNESS, extension, fan	1
52	FN106047	NUT, unit to body	2
53	AB610071	SCREW, self tapping, unit to body	2
54	GHF713	NUT, Spire	2

Metal Fresh Air Heater with 2.8kW Internal Fan or 4kW External Fan
Van and Pick Up 1969-80 Optional Equipment
New complete heater assemblies and heater casings are generally not available for the early style optional fresh air heaters fitted to Vans and Pick Ups
between 1969 and 1980 (by 1980 Vans and Pick Ups were finally being equipped with contemporary Saloon type fresh air heaters). Restoring your old unit is
usually the only choice in this instance (unless, as happens from time to time, someone unearths a 'new old stock' one). The radiator or 'matrix' can be
replaced as can the fan motor; we also offer a reconditioning service for your matrix should you prefer it.

The standard equipment heater for Vans and Pick Ups from 1969-80 approximately was the recirculatory heater, which is described in a later section of this catalogue.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
55	-	HEATER ASSEMBLY, fresh air	1	With 2.8kW internal fan.
56	-	HEATER ASSEMBLY, fresh air	1	With 4kW external fan.
57	17H8608	MATRIX, heater, new, 115mm between pipe centres	1	Reconditioned also available - please enquire.
	37H3930	MATRIX, heater, new, 125mm between pipe centres	1	Reconditioned also available - please enquire.
Important Note: There were, believe it or not, five matrices used in these heaters, each with their own unique features. The major difference - the one might stop you from fitting your new matrix into the heater casing - is the dimension between the centres of the inlet and outlet pipes, which could be 115mm (matrix 17H8608) or 125mm (matrix 37H3930). You must measure this dimension on your old matrix before deciding which new one to order.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
58	37H3924	SEAL SET, matrix, three pieces	1
59	27H1253	SEAL, matrix pipes	2
60	17H8108	FAN	1
61	17H6836	CLIP, fan to motor	1
	27H602	COLLET, fan to motor	1	Alternative to clip.
62	27H2189	MOTOR ASS'Y, internal fan, 2.8kW	1	1969-70, positive earth, internal fan.
	37H4215	MOTOR ASS'Y, internal fan, 2.8kW	1	1970-80, negative earth, internal fan.
The 37H4215 motor may be used on 1969-70 positive earth cars so long as the wiring connections are swapped over to suit.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
63	27H646	SCREW, motor to casing	3	Internal fan.
64	LWZ303	WASHER, locking	3	Internal fan.
65	AJD8012Z	NUT	3	Internal fan.
66	17H8612	SEAL, motor to casing	1	Internal fan.
67	7H6924	GROMMET, motor wiring	1	Internal fan.
68	-	BLOWER ASSEMBLY	1	External fan.
69	7H8387	MOTOR ASS'Y, external fan, 4kW	1	1969-70, positive earth, external fan.
	37H4216	MOTOR ASS'Y, external fan, 4kW	1	1970-80, negative earth, external fan.
The 37H4216 motor may be used on 1969-70 positive earth cars so long as the wiring connections are swapped over to suit.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
70	53K126	SCREW, motor to blower assembly	3	External fan.
71	LWZ403	WASHER, shakeproof	3	External fan.
72	FNZ103	NUT	3	External fan.
73	BH604081	BOLT, blower assembly to mounting brackets	4	External fan.
74	27H1232	GROMMET, mounting	4	External fan.
75	27H1258	SPACER, grommet	4	External fan.
76	27H1259	SPACER, flat	4	External fan.
77	LWZ204	WASHER, locking	4	External fan.
78	FNZ104	NUT, blower assembly to mounting brackets	4	External fan.
79	FNZ104	NUT, mounting brackets to inner wing	4	External fan.
80	LWZ204	WASHER, locking	4	External fan.
81	24A151	KNOB, lever	1	Except Germany.
82	37H3335	KNOB, lever	1	Germany.
83	PJZ602	SCREW, self tapping, casing assembly	18
84	17H8617	SCREW, self tapping, lever plate to casing	3
85	FNZ104	NUT, unit to body	1
86	LWZ204	WASHER, locking	1
87	PWZ104	WASHER, plain	1
88	PJZ1004	SCREW, self tapping, unit to body	2
89	PWZ203	WASHER, plain	2
90	PFS310	NUT, Spire	2
91	27H8235	SWITCH, fan control	1

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Fresh air heater units 1969 on

SEAL SET-(SPONGE)-HEATER MATRIX-'63-'69, VAN & PICKUP '69-80

MATRIX-HEATER-MK1&2 63-69 VAN & PICK UP (OPTIONAL).69-80 (115mm centes)

SCREW-SELF TAPPING PAN HEAD-No.6 x1/4''

SEAL-(SPONGE) AROUND MATRIX-FRESH AIR HEATERS

SWITCH-FAN-TWIN SPEED HEATER-'97 ON

SWITCH-HEATER MOTOR-'69-'96

NUT-2BA-STD. THICKNESS

SWITCH-TOGGLE-HEATER FAN-'63-'69

NUT-FLANGED-M6 METRIC FINE ZINC

WASHER-INTERNAL STAR-10/32'' I.D.

USE: AK610021

NUT-NYLOC - 1/4" UNF

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