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Model 702CRD  

Oil Burner

Installation and  

Operating Instructions

For Use By Qualified Service Technicians Only

It is important that the installation of the oil burner, 
piping and fittings, safety devices, controls, electrical 
wiring and equipment be done in accordance with 
national and/or local regulations of the authorities 
having jurisdiction over such installation.

126 Bailey Rd   

 North Haven, CT 06473

Ph  203-680-9401 

Fx  203-680-9403

Tech Support 800-989-2275 

carlincombustion.com

Carlin Combustion Technology, Inc.

The model 702CRD burner is designed 

to fire No. 2 fuel oil and is a low-high-low-off 
(step modulating) high-speed flame retention 
burner. Oil flow-rate is step-modulated by 
the use of two oil valves with a dual pressure 
fuel unit. Combustion air is controlled by 
a damper motor. Its end-switch energizes 
the second stage valve as the air shutter 
approaches the open position.

Model 702CRD is currently for use on  

H.B. Smith “18” series, Weil-McLain “88” 
series and Burnham “V9” series boilers. Other 
applications should be reviewed with Carlin 
factory support personnel if questionable.

Summary of Contents for 702CRD

Page 1: ...ort 800 989 2275 carlincombustion com Carlin Combustion Technology Inc The model 702CRD burner is designed to fire No 2 fuel oil and is a low high low off step modulating high speed flame retention bu...

Page 2: ...mes about 30 cfm of air per 1 GPH input To ensure an adequate air supply provi sion must be made for 30 cfm per 1 GPH plus 50 o additional for draft regulator Example Burner is firing at 6 00 GPH 6 X...

Page 3: ...0 14 21 7 65 27 15 0 7 5 15 25 8 50 32 15 5 8 0 15 30 9 35 34 16 0 8 0 16 32 10 20 35 16 0 8 0 16 33 11 05 37 16 5 8 5 16 35 11 90 48 16 5 8 5 16 46 12 75 55 16 5 8 5 16 53 Note These are minimum dim...

Page 4: ...go H B Smith Series 19 7 11 Section 60 P Hago Weil McLain 488 488R 60 PLP Monarch Weil McLain 588 70 P Hago Other makes of nozzles may or may not prove satisfac tory For special applications other spe...

Page 5: ...Normally a draft of 0 02 to 0 04 inches W C negative pressure is recom mended over the fire for natural draft applications Adjust the combustion head only while In high fire The burner is provided wi...

Page 6: ...evel of the burner and the fuel unit must pull lift the fuel up to the burner The vacuum reading should not exceed 12 mercury For two pipe installa tions the by pass plug must be installed Table 5 sho...

Page 7: ...e energized earlier if during the swing the fire gets very smoky then cleans up again the high fire valve should be energized later To adjust the damper end switch remove the damper motor cover This w...

Page 8: ...on Technology Inc T E C H S U P P O R T H O T L I N E 8 0 0 9 8 9 2 2 7 5 Carlin Combustion Technology Inc 126 Bailey Road North Haven CT 06473 Phone 203 680 9401 Fax 203 764 1714 e mail us at info ca...

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