Owner's manual

Model 702G/O Advanced gas/oil burners — Instruction manual
Carlin part number MN702GO Rev. 06/23/14
– 19 –
Where appliance instructions differ from this manual, follow the appliance instructions.
Before firing the burner . . .
Set combustion head (Dimension “A”)
1. Thecombustionheadadjustingscrewisusedtosetthespacingbetween
theretentionringandthrottlering(oraircone),regulatinghowmuchair
passesaroundtheretentionring.
2. SeeFigure16.Loosenthetwohousingcoverscrews.Thenrotatethe
headadjustingscrewuntilthedistancefromthehousingdetenttothe
beginningofthescaleequalsthevaluegiveninTable5(Dimension“A”).
Tightenthehousingcoverscrews.
Set air damper (low fire position)
1. See Figure17. Loosen theairdamperadjusting screw and locknut.
Rotatetheadjustingscrewuntiltheairopeningbetweenthedamperand
thedamperhousingequalstheinitiallow-reopeninginTable5.Leave
screwandlocknutlooseuntilnaladjustment.
Determining final adjustments
1. Theburnerisnowadjustedtotheapproximateairsettingsforthering
rateused. Follow theprocedureson thefollowingpages touse test
instruments
andmakenalburneradjustments.
Figure 17 Set initial low re air damper setting
Figure 16 Set initial combustion head position
Low-fire input High-fire input
Combustion
head position
Dimension “A”
Air damper
low-fire
opening
Butterfly valve
open – low fire
(factory set)
#2 Fuel oil Natural gas #2 Fuel oil Natural gas
GPH @ 100 PSIG
(Nozzle rating)
MBH GPH @ 300 PSIG MBH
Inches
(approximately)
Inches
(approximately)
%
(approximately)
3.50 490 6.00 840 0 3/8 50
3.75 525 6.50 910 1/16 3/8 50
4.00 560 6.90 966 1/8 7/16 50
4.50 630 7.80 1092 3/16 7/16 50
5.00 700 8.70 1218 3/8 1/2 50
5.50 770 9.50 1330 5/8 1/2 50
6.00 840 10.40 1456 1-1/8 9/16 50
6.50 910 11.20 1568 1-3/8 9/16 50
Nozzle specifications:
Standard Hago 45° SS
Alternates
Hago 45° P
Monarch 45° PLP
Table 5 Initial burner settings (see the pages 20 through 21 for nal adjustments using test instruments)
7. Set burner initial head and damper positions
 Followtheproceduresgivenhereandonthefollow-
ingpagestoensuretheburneriscorrectlyadjusted.
Takeyourtimeandtheresultsinbothgasandoil
modesshouldresultingoodoperation,andavoid
returnservicecalls.
 Youmustperformtheadjustmentsinthesequence
giveninthismanual.
 Failuretofollowthecorrectprocedurescouldre-
sultinseverepersonalinjury,deathorsubstantial
propertydamage.