Filter
Top Products
S-34 34,000 29,000 25,000 167 80.4 84.0 8
1
⁄8 14
5
⁄8 4_ _
S-60 60,000 51,000 44,000 293 81.6 84.4 11
1
⁄8 17
5
⁄8 4_ _
S-90 90,000 76,000 66,000 440 82.3 84.2 14
1
⁄8 20
5
⁄8 5_ _
S-120 120,000 101,000 88,000 587 83.0 84.1 17
1
⁄8 23
5
⁄8 6_ _
S-150 150,000 125,000 109,000 727 82.4 83.4 20
1
⁄8 26
5
⁄8 7_ _
SX-150 150,000 126,000 110,000 733 82.1 83.2 20
1
⁄8 26
5
⁄8 _647
SX-180 180,000 151,000 131,000 873 82.1 83.1 23
1
⁄8 29
5
⁄8 _748
3
⁄16
SX-210 210,000 175,000 152,000 1013 82.0 83.1 26
1
⁄8 32
5
⁄8 _748
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 SENTRY BOILERS--NATURAL AND L.P. GAS
EFFICIENCY
(A.F.U.E.%)
DIMENSIONS-Inches
A
B
D
C-VENT DIAMETER
* 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 Sentry boilers are tested and rated for capacity under the U.S.
Dept.of Energy (D.O.E.) Test Procedure for boilers.
C
19
3
/4"
19
3
/4"
19
3
/4"
1
1
/2" Supply
1
1
/2"
Supply
1
1
/2" Supply
3
/4" Drain
3
/4" Drain
3
/4" Drain
3
/4" to air eliminating
system (by others)
3
/4" to air eliminating
system (by others)
3
/4" to air eliminating
system (by others)
Rollout Safety
Switch
(behind
front panel)
Rollout Safety
Switch
(behind
front panel)
Rollout Safety
Switch
(behind
front panel)
Vent Damper*
Vent Damper*
Vent Damper*
Vent Damper*
28
7
/16"
28
7
/16"
32
7
/16"
6
1
/2"
Pressure/Temp.
Gauge
Pressure/Temp.
Gauge
High Limit.
Control
Ignition
Control
High Limit
Control
Ignition
Control
High Limit
Control
Ignition
Control
Blocked Vent
Safety Switch
Blocked Vent
Safety Switch
Blocked Vent
Safety Switch
Supply Piping
(by others)
Supply Piping
(by others)
Combination
Gas Valve
(gas tapping 1/2")
Combination
Gas Valve
(gas tapping 1/2")
Combination
Gas Valve
(gas tapping 1/2")
Ground
Joint Union
Ground
Joint Union
Ground
Joint Union
Circulator:
1/4" Circ. Flange
1
1
/2" Return Tapping
Circulator:
1/4" Circ. Flange
1
1
/2" Return Tapping
Circulator:
1/4" Circ. Flange
1
1
/2" Return Tapping
Sediment Trap
(required)
Sediment Trap
(required)
Sediment Trap
(required)
(Dotted piping
by others.)
(Dotted piping
by others.)
(Dotted piping
by others.)
Integral
Draft
Diverter
Pressure/Temp.
Gauge
C
A
B
C
A
A
B
B
C
D
INTEGRAL
DRAFT
DIVERTER
EXTERNAL
DRAFT
HOOD
Dimensions
MODELS S-60
to S-150
Dimensions
MODEL S-34
Dimensions
MODELS SX-150
to SX-210
LEFT END VIEW FRONT VIEW RIGHT END VIEW
LEFT END VIEW FRONT VIEW RIGHT END VIEW
LEFT END VIEW FRONT VIEW RIGHT END VIEW
*Vent damper may be installed horizontally on all models with use of a common vent elbow.