Reznor VPS150 Installation Manual

INSTALLATION / OPERATION / MAINTENANCE

Applies to: Model VPS 120V 60Hz

Gas-Fired, Tubular, Radiant,

Low-Intensity Infrared Heater

Model VPS Burner/Control Box

with 20 - 80 ft Tube/Reflector Length

		Part No. 270683
Doc No 700101 (06-15), Page

Introduction.

Welcome to the new range of powered infra-red heaters. Local regulations may vary and it is the installer’s responsibility to ensure that such regulations are satisfied.

All installation, assembly, commissioning and service procedures must be carried out by suitable qualified competent persons and conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code ANSI Z223.1/NFPA 54 or the National Gas and Propane Installation Code CSA B149.1

When assembling, installing, commissioning

and servicing is undertaken on radiant tube heaters specified in these instructions, due care and attention is required to ensure that working at height regulations are adhered to.

PLEASE READ this document prior to installation to familiarize yourself with the components and tools you require at the various

stages of assembly.

All Dimensions shown are in inches unless otherwise stated.

The manufacturer reserves the right to alter specifications without prior notice.

Document Index.

1	Installation Requirements		3	Start Up Instructions
	1.1	Health & Safety		3.1	Tools Required
	1.2	Heater Suspension		3.2	Start up procedure
	1.3	Clearance to Combustibles	4	Servicing Instructions
	1.4	Gas Connection & Supply Details		4.1	Tools Required
	1.5	Electrical Connections		4.2	Burner Description
	1.6	Ventilation Requirements		4.3	Burner Removal
		1.6.1 Unvented Units		4.4	Burner Gas Injector Servicing
		1.6.2 Vertical Venting		4.5	Burner Head and Electrode Servicing
		1.6.3 Horizontal Venting		4.6	Combustion Fan Assembly
	1.7	Fresh Air Intake		4.7	Radiant Tube Servicing
2	1.8	Technical Details		4.8	Reflector Servicing
	Assembly Instructions			4.9	Cleaning of Vent
	2.1	Tools Required		4.10 Re-commissioning after Service
	2.2	Assembly Notes	5	Troubleshooting Guide
		2.2.1 Tubes	6	Replacing Parts
		2.2.2 Turbulator Strips and Burner Inserts		6.1	Burner Controller Replacement
		2.2.3 Brackets		6.2	Air Pressure Switch Replacement
		2.2.4 Couplers		6.3	Gas Valve Replacement
		2.2.5 Reflectors		6.4	Optional Extra Kits
		2.2.6 End Caps (optional)	7 User and Operating Instructions
		2.2.7 Bends (where required)		7.1	To Start Heater
		2.2.8 Burner/Fan Assembly
				7.2	To Switch Off Heater
		2.2.9 Detailed Assembly Drawings
				7.3	Servicing

1. Installation Requirements.

1.1Health and Safety

A.Heater is intended for heating non-residential indoor spaces and should only be installed where flammable gases or vapors are not generally present.

B.Heaters may be suspended either horizontal or at any angle. See section 1.3 for clearance dimensions.

C.The installation must conform with local building codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CSA B149.1.

D.The unit shall be electrically grounded in accordance with National Electric Code ANSI/NFPA 70 and Canadian Electrical Code CSA C22.1.

Doc No 700101 (06-15), Page 2

E.The heater may be installed in aircraft hangars in accordance with the Standard for

Aircraft Hangars, ANSI/NFPA 409 and in automotive garages when installed in accordance with the Standard for Parking

Structures, ANSI/NFPA 88A, or the Standard for Repair Garages, ANSI/NFPA 88B, or the Canadian Natural Gas and Propane Installation Code, CSA B149.1, and are so marked. Ensure that minimum clearances will be maintained to vehicles parked below the heater.

F.The standard heaters are approved for installations between 0 - 2000ft (0 - 610m) for the US and 0 - 4500 ft (1370m) for Canada. Conversion kits are available on installations above these heights in the USA.

G.Massachusetts Requirement: If the heater is being installed in the Commonwealth of Massachusetts, this unit must be installed by a licensed plumber or licenced gas fitter.

1.2Heater Suspension

Attachment to the heater support lugs should be made by D shackle. The hanging attachments to overhead steelwork etc. must be purpose made to sound engineering practice or supplied by others. They must be adequately fixed and designed to carry the whole weight of the heater. In the event of suitable roof steelwork being unavailable, additional steelwork should be fitted to enable vertical hangers to be used for suspending the heaters.

These methods are illustrated in Figure 1. If there are any doubts as to the strength or suitability of roof steelwork to which heaters are to be suspended, please refer to a Consultant, Architect or owner of the building.

It is recommended that the heater is raised to its final position once the assembly of the tube/ bracket/reflector has been completed. Longer tube assemblies may be raised in more than one sub-assembly with final tube connection made in the air.

WARNING:

If not installed, operated and maintained in accordance with the manufacturer’s instructions, this product could expose you to substances in fuel or from fuel combustion which are known to the state of California to cause cancer, birth defects or other reproductive harm.

Figure 1. Recommended Methods of Heater Suspension.

U TUBE VARIANTS

NOTE.

'S' HOOKS ARE TO BE CLOSED UP AFTER ASSEMBLY

SUITABLE CHAIN

WORKING LOAD

LIMIT 100LB

EXHAUST

END

CHAIN

55° SUSPENSION

BURNER

END

Doc No 700101 (06-15), Page 3

ON VENTED HEATERS, THE HEATER SHOULD SLOPE DOWNWARDS AWAY FROM THE BURNER AND ON UNVENTED HEATERS SHOULD SLOPE DOWNWARDS TOWARDS BURNER BY APPROX. ½” FOR HORIZONTAL INSTALLATIONS AS SHOWN BELOW (DIAGRAMS EXAGGERATED FOR CLARITY)

	1/2	1/2”
	”
VENTED		UNVENTED

1.3Clearance to Combustibles.

Minimum clearance to combustibles are shown in Table 1 below.

IMPORTANT:

The stated clearance to combustibles represents a surface temperature of 90°F (50°C) above room temperature. Building material with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that adjacent materials are protected from degradation.

Building material with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures.

It is the installer’s responsibility to assure that adjacent materials are protected from degradation.

	Table 1	Clearance to Combustibles, inches (cm)
	MODEL	A	A1 / A2	B	B1	C1	C2	C3	D1	D2	E
	60	74		29	41	20 (51) /	8	22	8	12	12
		(188)		(74)	(105)	10* (26)*	(21)	(56)	(21)	(31)	(31)
	80	74		29	41	20 (51) /	8	22	8	12	12
		(188)	15° = 72 (183)	(74)	(105)	10* (26)*	(21)	(56)	(21)	(31)	(31)
	100	74	25° = 68 (173)	32	41	20 (51) /	8	22	8	16	12
			35° = 61 (155)
		(188)		(82)	(105)	10* (26)*	(21)	(56)	(21)	(41)	(31)
			45° = 53 (135)
	125	74	55° = 43 (110)	39	47	20 (51) /	8	22	20	18	12
		(188)		(99)	(120)	10* (26)*	(21)	(56)	(51)	(46)	(31)
	150	74		39	48	20 (51) /	8	22	20	18	12
		(188)		(99)	(122)	10* (26)*	(21)	(56)	(51)	(46)	(31)
	170	86	15° = 82 (209)	48	48	20 (51) /	11	22	20	20	12
		(219)	25° = 78 (199)	(122)	(122)	10* (26)*	(28)	(56)	(51)	(51)	(31)
			35° = 71 (181)
	200	86	45° = 61 (155)	48	48	20 (51) /	11	22	20	20	12
		(219)	55° = 50 (127)	(122)	(122)	10* (26)*	(28)	(56)	(51)	(51)	(31)

* distance with end caps fitted.

WARNING: Minimum clearance from the heater must be maintained from vehicles parked below heater. In all situations, clearances to combustibles must be

maintained. Signs should be posted in storage areas to specify maximum stacking height to maintain required clearance to combustibles. Such signs must either be posted adjacent to the heater thermostats or in the absence of such thermostats in a conspicuous location.

Refer to mounting clearance tables.

Doc No 700101 (06-15), Page 4

Figure 2 Clearance to Combustibles.

The minimum clearances to combustible materials are given in Table 1 These minimum distances MUST be adhered to at all times. Adequate clearance MUST be provided around air openings into the combustion chamber and there MUST be suitable clearance for accessibility and

for combustion / ventilating air supplies.

A2	to55°.	Angled view.
	0°
	A1

D2

Return end on U tube heater

WARNING!

therethatEnsureis adequate

theinprovisionbuilding for andcombustionventilation air supply.

mustInstallationmeet minimum

requirementsand applicable codes.

Outlet end.

D1

Side

unvented

Above

Reflector unvented

C3

End

unvented

outletAbove

B1

B

Below

heater

C2

Burner end.

	A
B Side vented	Endview.	Above Burner	E	Service distance
		C1

Doc No 700101 (06-15), Page 5

1.4Gas Connection and Supply

WARNING: Before installation, check that the local distribution conditions, nature of gas and pressure, and adjustment

of the appliance are compatible.

The gas connection on the heater is ½” N.P.T internal thread.

Injector sizes and manifold pressure for the burners are shown in the table 4. The gas supply piping and connections must be installed so that the minimum pressure stated is achieved.

A gas shut off valve and union should be fitted in the gas supply line close to the heater and a ⅛” N.P.T plugged tapping, accessible for test gauge connection, provided immediately upstream of the appliance gas inlet.

It is essential to provide some flexibility in the final gas connection by use of an approved flexible gas connector. See Fig 4.

Take care when making a gas connection to the heater not to apply excessive turning

force to the internal controls.

Care must be taken to observe the minimum pipe bend diameter (minimum 10” - 250mm, maximum 14” - 350mm) & pipe expansion distance (minimum 1⅛” - 28mm, maximum 3¾”) - 95mm.

The correct installation as shown will allow for approx 4” of movement due to

expansion.

Figure 3. Correct orientation of Ball Valve

Gas Flow

Gas Flow

Figure 4. Correct Installation of Flexible

Gas Connection

WARNING: FIRE OR EXPLOSION HAZARD - It is essential to provide some flexibility in the final gas line connection by use of an approved flexible connector as shown in the drawings. Expansion of the radiant pipe occurs with each firing cycle causing the burner to move with respect to the gas line. This can result in a gas leak producing an unsafe

condition.

Doc No 700101 (06-15), Page 6

* Connector must be certified for use on a radiant tube type infrared heater and must comply with Standard for Connectors for Gas Appliances, ANSI Z21.24/CSA 6.10 or with the Standard for Elastomeric Composite Hose and Hose Couplings for Conducting Propane and Natural Gas, CAN/CGA 8.1.

For heaters up to 150,000Btu/h, ½” ID x 24” long For heaters above 150,000Btu/h, ¾” ID x 36” long

NOTE: For Canada all heaters MUST use a hose 36” long See Table 3

Table 3
	HOSE SIZE		USA		CANADA
	3/4”		CE4		CONTACT
					FACTORY

CONNECTOR MUST BE INSTALLED IN A “U” CONFIGURATION. FOR HEATERS UP TO 150,000 BTU/H, A 24” LONG CONNECTOR OF AT LEAST ½” ID MUST BE USED. FOR HEATERS ABOVE 150,000 BTU/H, A 36” LONG CONNECTOR OF AT LEAST ¾” NOMINAL ID MUST BE USED.

Table 4 Gas Supply & Pressures

	Gas Type	Natural Gas	LP/Propane Gas
	Min Required Gas Pressure (in W.C) (60,000 TO	5.0	11.0
	150,000 BTU)
	Min Required Gas Pressure (in W.C) (170,000 TO	7.0	11.0
	200,000 BTU)
	Max Supply Pressure (in W.C)	14.0	14.0
	Gas Supply	Connection ½” N.P.T thread

1.5Electrical Connections

WARNING: Before making electrical connections, switch OFF the main electrical disconnect. There may be more than one disconnect switch. Lock out and tag switch with a suitable warning label. Electrical shock can cause

personal injury or death.

This appliance must be electrically grounded

Supply: 120V 60Hz single phase. Standard heater: 0.16HP. Current rating (inductive):

1.8 amp max (models 60 - 150)

1.0 amp max (models 170 & 200) Fuse: external 3 amp.

Important: All electrical work should be done by a qualified electrician in strict accordance with the National Electrical Code ANSI/NFPA 70 or Canadian Codes CSA C22.1.

The electrical supply to the heater is by three wires: live, neutral and ground connections. Install in accordance with all state & local codes.

Where alternative manufacturers controls are used, please refer to their instructions for installation details.

Doc No 700101 (06-15), Page 7

Figure 5a. Single and Multiple Heater Installations 120V Control

		G	GND
	W
T			L2
		BK	L1 (HOT)
T
11120V ThermostatThermostat
BK	W	Burner 1
	BK	G

	KEY:
120V 60Hz 1 Ph	G-GREEN
	W-WHITE
Supply circuit	BK-BLACK

Other burners

other burners

Figure 5b. Single Heater Installations 24V Control

Control Gas

L1

IND

MV

PS1

PS0

W1

R

X

C

COM

BK

R

R

Y

Y

K

K

BR GR BL

METHOD:-

Cut and strip pink cables linking terminals W1 and R Attach thermostat wires using suitable wire nuts.

C

		T
	W1		R
		T

X

24V Thermostat

Figure 5c. Multiple Heater Installations 24V Control

KEY: BL - BLUE BK - BLACK BR - BROWN GR - GREY K - PINK R - RED

Y - YELLOW

	R			R		C	W	G	GND	120V 60Hz 1 Ph
	C				304 VA	L2			L2	Supply circuit
									L1 (HOT)
					Trans	L1		BK
W1	T	R
		BK	S-0700	G	Relay					Other burners
24V Thermostat								Burner 1
			Fan center relay
			(Suppled by others)
KEY:							W
					BK
G - GREEN
W - WHITE										other burners
BK - BLACK
R - RED
Doc No 700101 (06-15), Page 8

Figure 6. Internal Burner Wiring Diagram.

120V/60Hz AC Supply

L G N

120V AC Fan

BK

G

W

R

G

W

	BL	G
		BK	W
Y	Y		120v/24VAC 60Hz
Pressure Switch		BR	Transformer

Optional

24V

Thermostat

KEY:

BL - BLUE

BK - BLACK

BR - BROWN

GR - GREY

G - GREEN

K - PINK

R - RED

W - WHITE

Y - YELLOW

Power ON (red)

BL BR

GR R

Burner ON (amber)

BK

R

R

Y

Y

K

K

BR

GR

BL

L1

IND

MV

PS1

PS0

W1

R

X

C

COM

Gas Control

R

M

GR

C

G

E

Gas Valve

NOTES:-

Power On light is permanently illuminated when 120V / 60 Hz AC external supply is connected to burner.

Additional wiring is required to install an optional extra thermostat and / or time clock.

If no thermostat is required then a jumper is fitted between terminals R and W1. In this configuration the burner will continuously fire until the 120V power supply is disconnected.

Wire specification:- 18 AWG (1.0mm²), Tri-rated, 105°C

If any of the original wire as supplied with the appliance must be replaced, it must be replaced with wiring material having a temperature rating of at least 220°F/105°C

Doc No 700101 (06-15), Page 9

1.6 Vent Requirements and Details

1.6.1 Unvented units

Heaters may be installed unvented providing the governing building codes are met and consideration is properly given to possibilities of condensation on cold surfaces.

Installation shall meet the following requirements when unvented:

•Natural or mechanical means shall be provided to supply and exhaust at least 4 CFM per 1000 BTU per hour input of installed heaters.

•Combustion gasses shall not impinge on combustible materials.

1.6.2 Vertical venting

The heater can be installed with a vertical vent.

All vent piping should be adequately supported from the building structure and terminated with an approved terminal. The maximum recommended vent length is 25ft (7.6m) with a maximum of two elbows. All connections should be properly sealed. refer fig 7a

1.6.3 Horizontal venting

Individual units can be vented horizontally through side walls. Recommended terminals are Part Numbers 111848 for 4” and 111850 for 6”.

Distances from adjacent public walkways, adjacent buildings, openable windows and building openings, consistent with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CSA B149.1.

Maximum length of vent is 25ft (7.6m) with two - 90° elbows.

Runs of 12ft (3.6m) or shorter can use 4” (101mm) dia. vent. Runs over 12ft (3.6m) should use 6” (152mm) vent pipe.

An approved clearance thimble is required when the flue pipe passes through combustible materials. Follow the requirements of the thimble and/or vent pipe manufacturer.

Standard vent terminals must extend at least 6” (152mm) from the wall and at least

Doc No 700101 (06-15), Page 10

24” (609mm) from any combustible overhang. This protects the building material from degradation by the vent gasses.

Vent joints should be sealed and secured according to the vent manufacturers instructions. Should condensation occur the vent should be shortened or insulated.

The terminal should be at least 3ft (0.91m) from any air intake to the building.

The vent terminal must be installed at a suitable height above the ground to prevent blockage by snow.

1.7Fresh Air Intake

Whenever the heater is installed in locations where airborne dust or other pollutants are present, a fresh air supply should be ducted to the burner.

If the heater is equipped with ducted combustion air, the vent terminal must be at least 3ft (0.91m) away from the air inlet and located higher than the inlet.

A fresh air duct of 4” (101mm) dia. should be installed from the fresh air to the air intake connection on the fan housing. A flexible jointing piece should be installed at the fan connection with hose clamps to facilitate expansion and contraction.

The maximum recommended length air duct is 25ft (7.6m) and the maximum number of elbows is two. The minimum length is 18” (456mm).

The location of the fresh air duct inlet must be where it will receive dust free clean air. An inlet cap with bird screen must be fitted at the inlet of the duct. If the duct inlet is located above the roof the underside of the inlet terminal must be at least 2ft (0.61m) above roof level (or above projected snow load) and at least 10” (254mm) above any projection on the roof within 7ft (2.1m) of the inlet. Intake pipe, fittings and sealant are not furnished by the manufacturer. Refer fig 7c & d.

Note the vent terminal must NOT be installed below the fresh air intake, and should have a minimum separation distance of 36” from the air intake.

Note The vent terminal should be installed so as to be in the same atmospheric pressure zone as the combustion air inlet of the appliance.

Figure 7.a Vertical Venting.

Figure 7.b Horizontal Venting (plan view shown).

Approved clearance thimble is required when the flue pipe extends through combustible materials. Follow the requirements of the thimble and/or Category III vent pipe manufacturer.

Note The vent terminal should be installed so as

to be in the same atmospheric pressure zone as the combustion air inlet of the appliance.

Note the vent terminal must NOT be installed below the fresh air intake, and should have a minimum separation distance of 36” from the air intake.

Figure 7.c Fresh Air Ducted Intake.

Aluminum 4” (101mm) O.D. pipe. Max length = 25’0” (7.62M) with 2 x 90° long radius bends.

Clamps

4” (101mm) O.D. flexible duct

Burner

Doc No 700101 (06-15), Page 11

1.8Technical Details

	No of Injectors						1
	Gas Connection							½” N.P.T
	Electrical Supply							120 volt 1 phase 60Hz
	Vent size (in)						4” or 6” (101mm or 152mm)
Unitary Fan Motor Details								120 volt, 1 phase 60Hz
	Current Rating				1.8A MAX (models 60 - 150); 1.0A MAX (models 170 & 200)
		Ignition				Electronic Program Start up with Spark Ignition
		Natural Gas	LP Gas			Min. Heater		Max. Heater		Min. Heater	Max. Heater
MODEL						Length		Length		Length	Length
		BTU/Hr	BTU/Hr			S ft		S ft		U ft	U ft
60		60,000	60,000			20		40		20	40
80		80,000	80,000			30		40		20	40
100		100,000	100,000			30		50		40	40
125		123,500	125,000			30		60		40	60
150		150,000	150,000			40		70		40	60
170		169,000	169,000			50		80		60	80
200		200,000	N/A			50		80		60	80

Appliances can be installed up to 10,000ft in the USA. Altitude conversion kits are available on request.

USA			0- 2000 ft (0-610m)
Size	60	80	100	125	150		170	200
NG “WC	3.9	3.5	4.5	4.3	4.0		3.3	3.3
LP “WC	5.5	5.2	8.0	7.6	7.0		6.1	N/A

CANADA			0- 2000 ft (0-610m)
Size	60	80	100	125	150	170	200
NG “WC	3.9	3.5	4.5	4.3	4.0	3.3	3.3
LP “WC	5.5	5.2	8.0	7.6	7.0	6.1	N/A

USA & CANADA		Natural Gas 0- 2000 ft (0-610m)
Size	60	80	100	125	150	170	200
Burner Orifice Plate Part No.	269941	269942	269943	269944	1005513	269946	269946
Flame Plate Part No.				N/A
Fan Part No.	270476	270476	270476	270476	270476	270475
Fan Orifice Part No.	269922	269925	269925	269930	269931	269935	269938
Injector Part No.	270400	270402	270403	270405	270407	270409	270410
Injector Carrier Part No.			270375			270376
Pressure Switch Part No.			270389				270390

USA & CANADA			LP Gas 0- 2000 ft (0-610m)
Size	60	80		100	125	150		170	200
Burner Orifice Plate Part No.	269948	269949		269950	269951	269952	269953
Flame Plate Part No.	269957	269958			269959			269960
Fan Part No.			270476					270475
Fan Orifice Part No.	269924	269925		269929	269931	269933		269937	N/A
Injector Part No.	270398	270399			270400	270401		270403
Injector Carrier Part No.			270375
Pressure Switch Part No.			270389

Doc No 700101 (06-15), Page 12

Technical Details continued

MODEL

U Tube

Straight Tube

U20

U40

U60

U80

S20

S30

S40

S50

S60

S70

S80

60

●

●

●

●

●

80

●

●

●

●

100

●

●

●

●

125

●

●

●

●

●

●

150

●

●

●

●

●

●

170

●

●

●

●

●

●

200*

●

●

●

●

●

●

* Nat Gas ONLY

MODEL

Tube Type Material

Min. Distance to

Calcoat™

Mild Steel

Bend ft (m)

60

TUBE 1

REMAINDER

10 (3.0)

80

TUBE 1

REMAINDER

10 (3.0)

100

TUBE 1

REMAINDER

15 (4.6)

125

TUBE 1

REMAINDER

15 (4.6)

150

TUBE 1

REMAINDER

20 (6.1)

170

TUBE 1 & 2

REMAINDER

25 (7.6)

200

TUBE 1 & 2

REMAINDER

25 (7.6)

Doc No 700101 (06-15), Page 13

2. Assembly Instructions.

PLEASE READ this section prior to assembly to familiarize yourself with the components and tools you require at the various stages of assembly. Carefully open the packaging and check the contents against the

parts and check list.

The manufacturer reserves the right to alter specifications without prior notice.

Please ensure that all packaging is disposed of in a safe environmentally

friendly way.

For your own safety we recommend the use of safety boots and leather faced gloves when handling sharp or heavy items. The use of protective eye wear is also

recommended.

2.1 Tools Required.

Suitable alternative tools may be used.

The following tools and equipment are advisable to complete the tasks laid out in this manual.

Saw	Leather	Phillips	Wrench
Horses	Faced	Screwdriver	Set
	Gloves
Cordless	5/16”	3/16” (5mm)	Tape
		5/32” (4mm)
Drill	Drive	Allen	Measure
		wrench

2.2Assembly Notes.

Please read these assembly notes in conjunction with the correct assembly drawings (figs 9 to 19).

2.2.1 Tubes

Each heating unit has two types of emitter tube. For details of the tube types and position please refer to the table (page 13 of this instruction manual).

Identify and position tubes on saw horses. For aesthetics it is advisable to position all tube seams facing down. Position coupling fastener so that these cannot be seen from beneath the heater.

Mark out the position of the bracket centers from the dimensions shown on the assembly drawings.

2.2.2 Turbulator Strips and Burner

Inserts

Ensure that the correct turbulator or burner insert is fitted, as this could void your warranty if they are incorrectly fitted or omitted when necessary.

2.2.2.1 Turbulator Strips

Turbulator strips should be inserted (when required) into the correct tube exactly as indicated in the assembly drawings.

Locate turbulator strip sections. Install the first turbulator strip into the open end of the last tube (only after it has been suspended and connected to the previous tube.)

Interlock the next section of turbulator strip as shown in the diagram below.

Doc No 700101 (06-15), Page 14