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* Vent damper may be installed horizontally on all models with use of a common vent elbow.
SE-70 70,000 58,000 50,000 333 81.5 82.0 11
1
⁄8"17
5
⁄8"4" 45
1
⁄2"
SE-105 105,000 87,000 76,000 507 81.6 82.1 14
1
⁄8"20
5
⁄8"5" 46
3
⁄16"
SE-140 140,000 116,000 101,000 673 81.7 82.2 17
1
⁄8"23
5
⁄8"5" 46
3
⁄16"
SE-175 175,000 145,000 126,000 840 81.7 82.2 20
1
⁄8"26
5
⁄8"6" 47"
SE-210 210,000 173,000 150,000 1000 81.8 82.3 23
1
⁄8"29
5
⁄8"7" 48
3
⁄16"
SE-245 245,000 202,000 176,000 1173 81.8 82.3 26
1
⁄8"32
5
⁄8"7" 48
3
⁄16"
MODEL
NUMBER †
A.G.A.
INPUT
(Btuh)
D.O.E.
CAPACITY
(Btuh)
NET
I=B=R
RATING
WATER
(Btuh) *
WATER
(Sq.Ft.)
STANDING
PILOT
INTERMITTENT
IGNITION
RATINGS FOR SENTINEL BOILERS--NATURAL AND L.P. GAS
EFFICIENCY
(A.F.U.E.)
DIMENSIONS
A
B
D
C
* Net ratings are based on a piping and pick-up allowance of 1.15. Slant/Fin
should be consulted before selecting a boiler for installation having unusual
piping and pick-up requirements.Ratings must be reduced by 4% at 2,000
feet elevation and an additional 4% for every additional 1,000 feet elevation
over 2,000 feet.
†Type of gas: after model number, specify gas by name “Natural”
or “Propane”.
Note: All Sentinel boilers are tested and rated for capacity under the U.S.
Dept.of Energy (D.O.E.) Test Procedure for boilers.
Dimensions MODELS SE-70 to SE-245
Easier to install. One of America’s most versatile gas boilers
With six models ranging in size from 70,000 to 245,000 Btuh, Sentinel boilers meet a wide
range of residential and light commercial heating requirements. All models are available for
use with natural gas or L.P. gas.
Sentinel boilers are “installer-friendly”, with features to make the contractor’s installation
and set up quicker and easier. All Slant/Fin boilers, for instance, are packaged in quick
release shipping crates to speed unpacking. Boilers are factory-wired with quick connect
harnesses for the vent damper and blocked vent safety switch. Controls are all mounted on
the outside of the boiler for easy access and quick wiring. The boiler height, including draft
diverter, is up to a foot and a half lower than many natural draft boilers. (For lower profile
boilers with integral draft hoods, refer to the Slant/Fin Sentry models).
The computer-aided design of Sentinel’s venting system enables the boiler to perform
effectively under a wide range of draft conditions, especially important on replacement jobs.
The Slant/Fin Sentinel boiler is one of the industry’s most versatile and durable high
efficiency boilers.
Left side view Front view Right side view
®
C
19
3
/
4
"
1
1
/
2
" Supply
C
(shown vertically)
Vent Damper
Pressure/Temp.
Gauge
(behind front panel)
Rollout Safety
Switch
Supply piping
(by others)
3
/
4
" Drain
3
/
4
" to air eliminating system
(by others)
Blocked vent
safety switch
(Flush Jacket)
A
B
C
(shown horizontally)
Vent Damper
Sediment Trap
(required)
(Dotted piping
by others)
Ground
Joint Union
(gas tapping
1
/
2
")
Combination
Gas Valve
1
1
/
4
" Circ.Flange
Circulator
1
1
/
2
" Return Tapping
Ignition
Control
High Limit
Control
D
28
7
/
16
"
Draft hood
28"
12"
6"
6"
6"
6"
Minimum clearance
dimensions