Slant/Fin VICTORY II VHS Series User manual

CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3
Installation Requirements
Boiler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Boiler Foundation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chimney Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Minimum Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Draft Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Vent Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Vent Damper Installation . . . . . . . . . . . . . . . . . . . . . . . . . 5,6
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Controls and Wiring . . . . . . . . . . . . . . . . . . . . . . 7
Boiler Room Air Supply and Ventilation . . . . . . . . . . . . . . 7
Water Piping at Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operating Instructions
Filling and Venting Water Systems . . . . . . . . . . . . . . . . . . 8
Initial Start, Safety and Lighting Instructions . . . . . . . . . 8–9
Burner Adjustment, Checking Gas Input. . . . . . . . . . . . . 10
Care and Maintenance
General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Annual Inspection and Cleaning . . . . . . . . . . . . . . . . . . . 11
Safety Check for Control Systems. . . . . . . . . . . . . . . . . . 12
Protection from Freezing/Water Treatment . . . . . . . . . . . 12
Keeping Area Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Sequence of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pump or Valve Zoning of Water Boilers . . . . . . . . . . . . . . . . 14
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Appendix A & B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Appendix C, D & E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Printed in Canada 0207 Publication No. SE-40
Part No. 46-0569 Rev. C
HOT WATER MODELS SE-70 THROUGH SE-245
INSTALLATION AND OPERATING INSTRUCTIONS
GAS-FIRED CAST-IRON BOILERS FOR NATURAL AND L.P. PROPANE GASES
SENTINEL™
IMPORTANT
READ ALL OF THE FOLLOWING
WARNINGS AND STATEMENTS
BEFORE READING THE
INSTALLATION INSTRUCTIONS
WARNING
LIQUEFIED PETROLEUM (L.P.)
PROPANE GAS-FIRED BOILERS
Installation location ONLY as permitted in paragraph entitled
"LIQUEFIED PETROLEUM (L.P.) PROPANE GASFIRED
BOILER LOCATION" on page 4 of this instruction book.
The above warning does not apply to NATURAL gas-
fired boilers.
The installation must conform to the requirements of the
authority having jurisdiction or, in the absence of such
requirements, to the National Fuel Gas Code, ANSI Z223.1-
latest edition or CSA B149.1-00 for natural gas and
propane. The installation must also conform to the
additional requirements in this Slant/Fin Instruction Book.
In addition, where required by the authority having jurisdic-
tion, the installation must conform to American Society of
Mechanical Engineers Safety Code for Controls and Safety
Devices for Automatically Fired Boilers, No. CSD-1 or CSA
B149.1-00 for natural gas and propane. If there is any
conflict in the above requirements, then the more stringent
requirement will apply.
This manual must be left with owner and should be hung on
or adjacent to the boiler for reference.
WARNING
This boiler, gas piping and accessories must be installed,
connected, serviced and repaired by a trained, experienced
service technician, familiar with all precautions required for
gas-fired equipment and licensed or otherwise qualified, in
compliance with the authority having jurisdiction.
Heating Contractor
Address
Phone Number
Boiler Model Number
Boiler Serial Number
Installation Date
®

2Sentinel
Dimensions
MODEL SE-70 to SE-245
SE-70 3 283 111/8448 175/8102 4 1289 503/4143 55/8152 61/4113 250
SE-105 4 359 141/8524 205/8127 5 1311 515/8181 71/8152 61/4141 310
SE-140 5 435 171/8600 235/8127 5 1311 515/8219 85/8152 61/4166 365
SE-175 6 511 201/8676 265/8152 6 1356 533/8257 101/8165 61/2193 425
SE-210 7 587 231/8752 295/8178 7 1376 6543/16 295 115/8179 671/16 220 485
SE-245 8 664 261/8829 325/8178 7 1376 6543/16 333 131/8179 671/16 247 545
Boiler
Model
Gas
Type
610m – 1220m
(2000' – 4000')
1220m – 1372m
(4000' – 4500')
Orifice
Size for
Sea
Level
Orifice Sizes for High Altitudes
Reduce output 10%
Elevation – Meters (Feet)
No. of
Sect.
Dimensions
A
mm in.
B
mm in.
D
mm in.
E
mm in.
G
mm in. kg lb
C
mm in.
Approx.
Total Wt.
Full of Water
Natural 47 48
Propane 56 56
CHIMNEY RECOMMENDATIONS
HEIGHT: 4.6 m (15 ft.) (minimum) from draft hood skirt to top of chimney.
INSIDE DIAMETER: Same as dimension C (or larger).
NOTE: Larger chimney may be required if two or more boilers or a boiler and another appliance are vented to a
single chimney.
Orifice indicated for sea level above are factory installed in
boiler unless otherwise specified by the local authority. See
Section “III” on page 11 for burner input adjustment.
38 mm (1-1/2")
FPT Supply
419 mm
(16-1/2")
552 mm (21-3/4")
19 mm (3/4")
to air eliminating
system (by others)
Vent Damper*
(shown vertically)
Vent Damper*
(shown horizontally)
Sediment Trap
(required)
High Limit
Control
Ignition
Control
Blocked Vent
Safety Switch
19 mm (3/4") Drain
Left End View Front View Right End View
38 mm
(1-1/2")
FPT Return
722 mm
(28-7/16")
276 mm
(10-7/8")
Circulator:
32 mm (1-1/4") Circ.
Flange
38 mm (1-1/2")
Return Tapping
Combination
Gas Valve
[gas tapping
13 mm (1/2")]
397 mm
(15-5/8")
502 mm
(19-3/4")
324 mm (12-3/4")
Install manual gas main
shutoff valve 1524 mm
(5 ft.) above floor, when
required by local code.
Install sediment trap
and connect with
ground joint union.
Dotted piping by
installing contractor.
Note: Height dimension increases by 44 mm (1-3/4") when combustible floor kit is used.
* Vent damper may be installed horizontally on all models with use of a vent elbow. For more information, see Figure 2, page 5.
G
D
CE
279 mm
(11")
Rollout Safety Switch
(behind front panel)
Supply Piping
(by others)
Pressure/Temp
. Gauge
76 mm
(3")

49
57

Sentinel 3
IMPORTANT: This equipment must be installed in accordance with
the requirements of CSA B149.1-00 for natural gas propane. Instal-
lation Codes for Gas Burning Appliances must conform to require-
ments of the local gas company, local building codes, and other
authorities which have jurisdiction. Such requirements, where
applicable, take precedence over these general instructions. All
electrical connections must be in accordance with Canadian Elec-
trical Code C22.1 Part 1.
This installation must also conform to the additional requirements
in this Slant/Fin Instruction Book.
NATURAL GAS-FIRED BOILER LOCATION
Provide a level, solid foundation for the boiler. Location should be
as near as possible to chimney or outside wall so that the flue pipe
from boiler is short and direct.
The location should also be such that the gas ignition system com-
ponents are protected from water (dripping, spraying, rain, etc.)
during appliance operation and service (circulator replacement,
condensate trap, control replacement, etc.).
BOILER FOUNDATION
A. Provide a solid, level foundation, capable of supporting the
weight of the boiler filled with water, and extending at least
51 mm (2") past the jacket on all sides. See dimensions of
boiler, page 2.
B. For installation on non-combustible floors only. The Com-
bustible Floor Kit part number printed on the boiler rating plate
is the only one to be used when installing on combustible
floors. The boiler must not be installed on carpeting.
C. If boiler is to be located over buried conduit containing electric
wires or telephone cables, consult local codes or the National
Board of Fire Underwriters for specific requirements.
Base Assembly
Sentinel Boiler
Burners
Pilot
Burner
Access
Door
Gas Valve
INSTALLATION REQUIREMENTS
Effikal Damper
Model C H I
SE-70 102mm 152mm 122mm
(4”) (6”) (4-13/16”)
SE-105 127mm 152mm 122mm
(5") (6") (4-13/16")
SE-140 152mm 165mm 135mm
(6") (6-1/2") (5-5/16")
SE-175 178mm 179mm 149mm
(7") (7-1/16") (5-7/8")
SE-210 178mm 179mm 149mm
(7") (7-1/16") (5-7/8")
SE-245 178mm 179mm 149mm
(7") (7-1/16") (5-7/8")

MINIMUM CLEARANCES FOR COMBUSTIBLE
CONSTRUCTIONS
A. Minimum boiler clearances shall be as follows:
B. Provide accessibility clearance of 510 mm (24”) on sides
requiring servicing and 457 mm (18”) on sides used for
passage.
C. All minimum clearances shown above must be met. This
may result in increased values of some minimum clearances
in order to maintain the minimum clearances of others.
D. Clearance from hot water pipes shall be 25 mm (1 inch)**.
** At points where hot water pipes emerge from a floor, wall or ceiling, the
clearance at the opening through the finished floor, wall or ceiling boards
may not be less than 13 mm (1/2 inch). Each such opening shall be
covered with a plate of non-combustible material.
SAFETY
KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
DRAFT HOOD
The draft hood supplied with SE models is part of the listed boil-
er assembly. DO NOT alter the hood. See dimensions, page 2.
Attach the hood to the boiler flue outlet. Connect flue pipe full
size of hood outlet. Vent damper must be installed on the outlet
side of the hood. See Vent Piping, below.
VENT PIPING
A. Vent piping installation must be in accordance with the
requirements of the local gas utility, local building codes and
other authorities having jurisdiction.
B. Boiler vent pipe must be the full diameter of the boiler outlet.
See dimensions, page 2.
C. If more than one appliance vents into a common breeching,
the area of the breeching must be equal to the area of the
largest vent plus 50% of the area of the additional vent areas.
Vent connectors serving appliances vented by natural draft
shall not be connected into any portion of mechanical draft
systems operating under positive pressure. Horizontal
breeching or vent pipe should be as high as possible, con-
sistent with codes, so that vertical vents from appliances will
have a high rise above draft diverter openings. All horizontal
runs must slope upwards not less than 20 mm/m (1/4 inch
per foot) of run. Horizontal portions of the venting system
4Sentinel
CHIMNEY REQUIREMENTS
A. Sentinel boilers may be vented into a masonry vitreous tile-
lined chimney or type “B” venting system NOT EXPOSED to
the OUTDOORS below the roof line.
Venting and sizing of venting system must be in accordance
with the requirements of the local gas utility, local building
codes and other authorities having jurisdiction.
If a masonry chimney is exposed to the outdoors on one or
more sides below the roof line (exterior chimney), ONE of
the following options apply:
1. Chimney must be re-lined with an approved metallic liner.
When this is done, the chimney will be considered NOT
exposed to the outdoors and the requirements for NON-
exposed chimneys and/or local codes will apply.
2. If an exposed tile-lined chimney is to be used WITHOUT a
metallic liner, the boiler must first meet the requirements
of the following tables and paragraphs of the National
Fuel Gas Code:
I. For Single Sentinel Boiler—Paragraph 11.2.9 and
table 11.11.
II. For multiple appliances—Paragraph 11.3.18 and table
11.12 (or 11.13 if applicable).
In addition, all requirements of the local gas utility, local
building codes and other authorities having jurisdiction
apply.
B. If an existing boiler is removed from a common venting sys-
tem, the common venting system may be too large for prop-
er venting of the remaining appliances connected to the
common vent. Follow the test procedure shown in Appendix
“A” on page 15 of this manual to insure proper operation of
venting system and appliances.
C. Inspect for proper and tight construction. Any restrictions or
obstructions must be removed. An existing chimney may
require cleaning.
D. Chimney or vent must extend at least 914 mm (3 feet) above
any ridge within 3048 mm(10 feet) of the chimney.
WARNING
LIQUEFIED PETROLEUM (L.P.) PROPANE
GAS-FIRED BOILER LOCATION
REQUIRES SPECIAL ATTENTION
Liquefied Petroleum (L.P.) propane gas is heavier than air.
Therefore, propane boilers, piping, valves must NOT be
installed in locations where propane leaking from defective
equipment and piping will “pool” in a basement or other
space below the leak.
A spark or flame from the boiler or other source may ignite
the accumulated propane gas causing an explosion or fire.
Provide a level, solid foundation for the boiler. Location
should be as near the chimney as possible so that the flue
pipe from boiler to chimney is short and direct.
The UNIFORM MECHANICAL CODE may be in effect in
your geographic area
The following precautions are cited by the 1994 UNIFORM
MECHANICAL CODE, section 304.6 or CSA B149.00 for
natural gas and propane:
“LPG Appliances. Liquefied petroleum gas-burning
appliances shall not be installed in a pit, basement or
similar location where heavier-than-air-gas might collect.
Appliances so fueled shall not be installed in an above-
grade under-floor space or basement unless such loca-
tion is provided with an approved means for removal of
unburned gas.”
Consult Chapter 5 of the 1994 UNIFORM MECHANICAL
CODE or CSA B149.00 for natural gas and propane for
design criteria of the “approved” means for removal of
unburned gas.
SENTINEL SERIES
MINIMUM CLEARANCES FOR COMBUSTIBLE
CONSTRUCTION. MINIMUM ALCOVE AND CLOSET
CLEARANCE.
Front 152 mm (6”)
Rear 152 mm (6”)
Left Side 152 mm (6”)
Right Side 305 mm (12”)
Top (above boiler) 711 mm (28”)
Flue Connector 152 mm (6”)

Sentinel 5
must be supported to prevent sagging by securing each
joint with metal screws and by providing hanger spaced no
greater than 1524 mm (5 feet apart).
D. Vent or breeching into chimney should not be inserted past
the inside wall of the chimney liner.
E. All venting means should be inspected frequently. See Care
and Maintenance and separate User's Information Manual.
VENT DAMPER INSTALLATION
The vent damper referred to in the following instructions is the
Slant/Fin LTD/LTEE vent damper.
I. This device is design certified by CSA for use ONLY on spe-
cific Slant/Fin gas boiler models. These boilers must also be
equipped with a plate which states that the boiler must or
may be used with a Slant/Fin automatic vent damper device
and indicates the proper vent damper model number. This
device cannot be used with a millivolt ignition system.
II. A. INSTALLATION INSTRUCTIONS BEFORE YOU START
TO INSTALL
1. Read this installation manual, the "DANGER" plate
attached to the top of the boiler, the "WARNING" on
the wiring diagrams, vent damper carton and operator
cover.
2. Perform pre-installation inspection as required by
ANSI specification Z21.66 or CSA B149.1-00 for
natural gas and propane.
3. Select a proper, convenient location (see figures 1
and 2).
4. Carefully unpack the unit. DO NOT FORCE IT OPEN
OR CLOSED! Forcing the damper may damage the
gear train and void the warranty.
WARNING—DANGER
Once you have begun vent damper installation procedure, DO
NOT restore electric power and gas supply until installation and
inspection have been completed (in order to prevent the main
burners from operating). DO NOT operate the boiler until the
vent damper harness "FEMALE PLUG" is plugged into "MALE
PLUG" (as described in the installation instructions), and the
vent damper installation and checkout procedures have been
completed. Failure to observe this warning may create a haz-
ardous condition that could cause an explosion or carbon
monoxide poisoning.
B. 1. This device must be installed after the appliance draft
hood (between the draft hood outlet and the connec-
tor to the outdoor chimney or vent) as close to the
draft hood as practicable, and without modification of
the draft hood or the damper. (See figures 1 and 2.)
2. The inlet size of the vent damper must be the same
nominal trade size as the outlet of the draft hood.
3. This device must be located in a venting system or
section of a venting system so that it serves only the
single appliance for which it is installed. (See fig. 5.)
4. Clearances of not less than 152 mm (6 inches) must
be maintained from combustible materials, with provi-
sions for access for service.
Figure 3. Vent damper dimensions
Vent 102 mm 127 mm 152 mm 178 mm 203 mm 229 mm 254 mm
Size (4") (5") (6") (7") (8") (9") (10")
A 237 mm 262 mm 287 mm 313 mm 338 mm 364 mm 389 mm
95/16"10
5/16"11 5/16"12 5/16"13 5/16"14 5/16"15 5/16"
TABLE
22 mm (7/8")
DIA. K.O.
Figure 1.
Figure 2.
FEMALE PLUG
FEMALE PLUG

6Sentinel
C. NOW, PROCEED AS FOLLOWS:
1. Separate the vent pipe directly on top of the draft hood
or diverter and place damper in position as shown in
figures 1–6. The vent damper must be installed so that
the damper position indicator is in a visible location
after installation. See figure 4 for position indicator
description. The arrow imprint on the damper should
point in direction of vent gas flow (towards chimney).
Re-assemble the vent piping. Be sure the vent damper
is well seated and fastened with 3 sheet metal screws.
Screws should be no longer than 13 mm (1/2 inch).
See figure 6.
2. Be sure that undersized vent pipe does not block
movement of damper vane (see figure 4).
3. Boilers that have a vent damper are factory wired with
a male plug.
a) Attach the flexible metallic conduit vent damper harness
to the right hand side of the jacket by passing the free end
of the harness through the 22 mm (7/8") diameter hole in
the top of the jacket, and using the BX connector at the
free end of the metallic conduit, fasten to jacket.
b) Connect "FEMALE PLUG" (free end of vent damper har-
ness) into "MALE PLUG" (see correct wiring diagram for
both continuous and intermittent pilots).
c)
The other end of the flexible metal conduit has a
small molex plug and a 90 degree metal conduit
connector. Route the molex receptacle through the
conduit bracket on the vent damper. Place the har-
ness receptacle into the damper plug. Securely fas-
ten the harness conduit connector to the conduit
bracket by carefully pushing it into the hole in the
bracket.
4. Restore electrical power and turn on gas supply.
D. AFTER INSTALLATION:
1. Operate system through two complete cycles to
check for opening and closing in proper sequence,
and proper burner operation. DAMPER MUST BE IN
OPEN POSITION WHEN BOILER MAIN BURNERS
ARE OPERATING.
2. Perform installation checks as required by ANSI spec-
ification Z21.66 or CSA B149.1-00 for natural gas and
propane.
3. Replace the front cover of the boiler.
4. Check the troubleshooting section if problems arise..
E. THERMOSTAT HEAT ANTICIPATOR ADJUSTMENTS
If the 24V room thermostat that controls the boiler has an
adjustment heat anticipator, it must be set to the AMP
draw of the boiler. Connect the system to the thermostat
and run the system. Measure the current draw through
the thermostat wires and set anticipator accordingly. See
“Appendix C.”
Figure 6.
CAUTION
TO PREVENT INTERFERENCE WITH DAMPER VANE
MOVEMENT, SCREWS OR POP RIVETS MUST NOT BE
LOCATED IN SHADED AREAS OF THE CASTING AND
MUST NOT EXCEED 13 MM (1/2") IN LENGTH.
Figure 5.
Figure 4.

Sentinel 7
GAS PIPING
A. Local installation codes apply. The pipe joint compound
used on threads must be resistant to the action of liquefied
petroleum gases.
B. The gas supply line to the boiler should be run directly from
the meter for natural gas or from the fuel tank for L.P.
propane gas. See page 2 for location of union and manual
main shutoff valve that may be specified locally.
Selecting pipe size for natural gas:
1. Measure or estimate the length of piping from the meter
to the installation site.
2. Consult gas supplier for heating value of gas-W/m3
(BTU/cu. ft.).
3. Divide boiler rated input by heating value to find gas flow
in piping (m3/hr) (cu. ft. per hour).
4. Use table below to select proper pipe size.
Example: Boiler model SE-175 is to be installed. Distance
from gas meter to the boiler is 6.1m (20 ft). Heating value of
natural gas is 10560 W/m3(1020 BTU/cu. ft.) Select proper
pipe size.
At 6.1m (20 ft.) length of pipe, match required capacity from
table below (choose higher capacity, in this case is 5.4 m3
[190 cu. ft.] per hour). Required pipe size is 19mm (3/4").
Improper gas pipe sizing will result in pilot flame outages,
insufficient heat and other installation difficulties. For more
information and also if other appliances are to be attached
to the piping system, see Appendix C of National Fuel Gas
Code ANSI Z223.1-latest edition or CSA B149.1-00 for nat-
ural gas and propane.
C. The boiler and its gas connection must be leak tested before
placing the boiler in operation. Use liquid soap solution for
all gas leak testing. Do not use open flame.
This boiler and its individual shutoff valve must be discon-
nected from the gas supply piping system during any pres-
sure testing of that system at test pressures in excess of
3.5 kPa (1/2 PSIG). This boiler must be isolated from the gas
supply piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than 3.5 kPa (1/2
PSIG).
D. All gas piping used should be inspected thoroughly for
cleanliness before makeup. A sediment trap must be pro-
vided, as illustrated on page 2.
E. The minimum and maximum gas supply pressure (at the
inlet of gas valve) are shown on the boiler rating plate for the
type of gas used. Gas supply pressure should never be less
than minimum or more than maximum pressure when the
boiler or any other appliance is turned on or off.
ELECTRICAL CONTROLS AND WIRING
A. The electrical power to the boiler must be on a separately
fused and live circuit.
B. If an external electrical source is utilized, the boiler, when
installed, must be electrically grounded in accordance with
the requirements of the authority having jurisdiction or, in
absence of such requirements, with the Canadian Electric
Code – CSA-C22.1, Part 1 – latest edition.
C. Basic control wiring diagrams are supplied. Other control
systems may be factory supplied, see User's Information
Manual and Instructions packed with control system sup-
plied.
D. After placing the boiler in operation, the safety shutoff device
must be tested. See page 12 safety check.
BOILER ROOM AIR SUPPLY AND VENTILATION
An ample supply of air is required to obtain combustion and
ventilation. ALL AIR COMES FROM OUTSIDE, directly through
wall openings to the boiler or through unsealed openings
around windows, doors, etc. in the whole building. When build-
ings are insulated, caulked and weather stripped, now or later
on, direct openings to outside may be required and should be
provided. If the boiler is not near an outside wall, air may be
ducted to it from outside wall openings.
Provisions for combustion and ventilation air must be made in
accordance with section 5.3, Air for Combustion and Ventila-
tion, of the National Fuel Gas Code, ANSI Z223.1-latest edition
or CSA B149.1-00 for natural gas and propane, or applicable
provisions of the local building codes. The following recom-
mendation applies to buildings of energy-saving construction,
fully caulked and weather stripped:
INSTALLATION IN ENCLOSED BOILER ROOM REQUIRES
TWO UNOBSTRUCTED OPENINGS FOR PASSAGE OF AIR
INTO THE BOILER ROOM:
1. Air drawn horizontally from outdoors DIRECTLY through an out-
side wall; one louvered opening near the floor and one louvered
opening near the ceiling, each opening with a minimum FREE air
passage area of 550 mm2 per kW (1 square inch per 4000 BTUH)
of total appliances’ input.
2. Air drawn horizontally through HORIZONTAL DUCTS; one open-
ing near the floor and one opening near the ceiling, each opening
with a minimum FREE air passage area of 1100 mm2 per kW (1
square inch per 2000 BTUH) of total appliances’ input.
3. Air drawn VERTICALLY from outdoors; one opening at the floor
and one opening at the ceiling, each opening with a minimum
FREE air passage area of 550 mm2 per kW (1 square inch per
4000 BTUH) of total appliances’ input.
4. Air drawn from inside the building; one opening near the floor and
one opening near the ceiling, each opening with a minimum
FREE air passage area of 2200 mm2 per kW (1 square inch per
1000 BTUH) of total appliances’ input.
Gas flow = = 4.9 m3/hr
51 290 W/hr
10 560 W/m3
(Gas flow = = 171.5 cu. ft. per hour)
175,000 BTU/hour
1020 BTU/cu. ft.
13mm (1/2”) 19mm (3/4”) 25mm (1”) 32mm (1-1/4”) 38mm (1-1/2”)
mft m3/hr cu.ft./ hr. m3/hr cu.ft./hr. m3/ hr cu.ft./hr. m3/ hr cu.ft./ hr. m3/ hr cu.ft./ hr .
3.0 10 3.7 132 7.9 278 14.7 520 29.7 1050 45.3 1600
6.1 20 2.6 92 5.4 190 9.9 350 20.7 730 31.1 1100
9.1 30 2.1 73 4.3 152 8.1 285 16.7 590 25.2 890
12.2 40 1.8 63 3.7 130 6.9 245 14.2 500 21.5 760
15.2 50 1.6 56 3.3 115 6.1 215 12.5 440 19.0 670
18.3 60 1.4 50 3.0 105 5.5 195 11.3 400 17.3 610
21.3 70 1.3 46 2.7 96 5.1 180 10.5 370 15.9 560
24.3 80 1.2 43 2.5 90 4.8 170 9.9 350 15.0 530
27.4 90 1.1 40 2.4 84 4.5 160 9.1 320 13.9 490
30.5 100 1.1 38 2.2 79 4.2 150 8.6 305 13.0 460
Length
of Pipe
Gas Flow In Piping
Pressure Drop = 8mm (.3”) in water Specific Gravity = 0.60
Iron Pipe Size (Ips)—inches
At pressure drop of 0.3 in. water, specific gravity = 0.60.

8Sentinel
IF BOILERS ARE INSTALLED ADJACENT TO OTHER FUEL
BURNING EQUIPMENT, THE AREA OF FREE OPENINGS
MUST BE APPROPRIATELY INCREASED TO ACCOMMODATE
THE ADDITIONAL LOAD.
Openings must never be reduced or closed. If doors or win-
dows are used for air supply, they must be locked open. Protect
against closure of openings by snow and debris. Inspect fre-
quently.
No mechanical draft exhaust or supply fans are to be used in or
near the boiler area.
The flow of combustion and ventilating air to the boiler must not
be obstructed.
WATER PIPING
I. CIRCULATING SYSTEMS
A. Hot water heating systems include a water circulating
pump which may be mounted on the supply or return
side of the boiler based on system design. See figure 5.
II. AIR CONTROL SYSTEM
A. DIAPHRAGM EXPANSION TANKS are used to control
system pressure in an AIR ELIMINATING SYSTEM: an
automatic air vent is used to REMOVE air from the system
water. See figure 5. If system pressure needs further con-
trol, add an additional tank or install a larger capacity
tank. Locate the tank near the boiler, as
illustrated. An automatic air vent should be installed in the
top of the boiler or air purger. See figure 5.
B. PUMP LOCATION — Locating low-head pump(s) on
return to boiler is acceptable for smaller boiler sizes in
residences of one or two stories. The alternate pump
location shown in illustration is required in large, multi-
story building installations, especially when high-head
pumps are used. The expansion tank must be at the boil-
er or between boiler and supply main pump(s).
IMPORTANT: Hot water heating systems containing high
water volume, such as would occur with cast-iron radia-
tion, require special care with air elimination.
The circulating pump should be located on the boiler
supply pipe and the expansion tank and air scoop should
be located near the pump suction.
C. On a hot water boiler installed above radiation level, the
boiler must be provided with a low water cutoff device at
the time of installation by the installer.
I. FILLING AND VENTING WATER SYSTEMS
A. Fill the system with water. Vent or purge off air.
B. Fire the boiler as soon as possible (see following warning and
instructions) and bring water temperature to at least 82°C
(180°F), while circulating water in the system.
C. Vent air and add water as needed to achieve operating pressure
on boiler gauge. Pressure must be between approximately 83
kPa (12 psi) (cold water) and 172 kPa (25 psi) (at water tempera-
ture setting of high limit control), for boilers equipped with 207
kPa (30 psi) relief valves. Boilers rated for a higher pressure and
equipped with a matching relief valve may operate at a higher
pressure, but no higher than 34 kPa (5 psi) below the relief valve
opening pressure.
D. Check for and repair any leaks before placing system in service.
Before firing boiler, make these checks:
1. System is full of water. Air is vented or purged.
2. Relief valve is installed in accordance with the ASME Boiler Pres-
sure Vessel Code, Section IV. Valve opening is not closed or
reduced in size.
3. Venting is installed according to instructions under “VENT PIP-
ING”.
4. All wiring is completed, following applicable wiring diagrams.
5. Using soap solution, check for gas leaks in all gas piping from
meter to boiler pilot and manifold. Do not use open flame.
II. INITIAL START
Safe lighting and other performance criteria were met when test-
ing various gas manifold and control assemblies used on the
Sentinel Series Boilers under the ANSI-Z21.13-1991 Standard
or
CSA B149.1-00 for natural gas and propane .
INSTRUCTIONS
Follow the lighting instructions in this manual that apply to the par-
ticular ignition system equipped on this boiler. (Also, see figures on
page 2 for location of gas manifold, gas valve and control assem-
bly.) These instructions are also attached to the boiler.
1. Continuous Burning Pilot (24V).
FOR BOILERS EQUIPPED WITH HONEYWELL GAS VALVE
VR8200, VR8300, V8200 or V800. (see figures 6 and 7).
A. This appliance has a pilot which must be lighted by hand. When
lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area for gas.
Be sure to smell next to the floor because some gas is heavier
than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Figure 5. Piping arrangement
19 mm (3/4") Pressure
Relief Valve
OPERATING INSTRUCTIONS
SAFETY INFORMATION
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result causing property damage, per-
sonal injury or loss of life.

C. Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by hand, don't
try to repair it, call a qualified service technician. Force or attempt-
ed repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any
gas control which has been under water.
Lighting Instructions
1. STOP! Read the safety information on this page.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. Remove control access panel.
5. Push in gas control knob slightly and turn clockwise
to "OFF".
6. Wait five (5) minutes (longer for propane) to clear out any gas,
then smell for gas, including near the floor. If you then
smell gas, STOP! Follow "B" in the safety informa-
tion on this page. If you don't smell gas, go to
next step.
7. Remove the pilot access panel located below
and behind the gas control unit.
8. Find pilot—follow metal tube from gas control. The pilot is
between two burner tubes behind the burner access panel.
9. Turn knob on gas control counterclockwise to "PILOT".
10. Push in red button all the way and hold in. Immediately
light the pilot with a match. Continue to hold the red button in for
about one (1) minute after the pilot is lit. Release knob and it will
pop back up. Pilot should remain lit. If it goes out, repeat steps 5
through 10.
– If knob does not pop up when released, stop and immediately call
your service technician or gas supplier.
– If the pilot will not stay lit after several tries, turn the gas control
knob to “OFF” and call your service technician or gas supplier.
11. Replace pilot access panel.
12. Turn gas control knob counterclockwise to "ON".
13. Replace control access panel.
14. Turn on all electric power to the appliance.
15. Set thermostat to desired settings.
To Turn Off Gas To Appliance
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be per-
formed.
3. Remove control access panel.
4. Turn gas control knob clockwise to "OFF". DO NOT
force.
5. Replace control access panel.
Sentinel 9
2. Intermittent Pilot System (IID).
FOR BOILERS EQUIPPED WITH HONEYWELL GAS
VALVE VR8204 or VR8304 (see figures 8 and 9).
A. This appliance is equipped with an ignition device which automati-
cally lights the pilot. Do not try to light the pilot by hand.
B. BEFORE OPERATING smell all around the appliance area for gas.
Be sure to smell next to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; Do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor's phone. Fol-
low the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
C. Use only your hand to push in or turn the gas control knob. Never
use tools. If the knob will not push in or turn by hand, don't try to
repair it, call a qualified service technician. Force or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part has been under-water. Immedi-
ately call a qualified service technician to inspect the appliance and
to replace any part of the control system and any gas control which
has been underwater.
Operating Instructions
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. DO NOT try to light the pilot
by hand.
5. Remove control access panel.
6. Turn gas control knob clockwise until knob stops
then continue to "OFF". DO NOT force.
7. Wait five (5) minutes (longer for propane) to clear out any
gas, then smell for gas, including near the floor. If you then
smell gas, STOP! Follow "B" in the safety information
above on this page. If you don't smell gas, go to next step.
8. Turn gas control knob counterclockwise to "ON".
9. Replace control access panel.
10. Turn on all electric power to the appliance.
Figure 7.
Figure 6. Valve VR8200, VR8300, V8200 or V800
SAFETY INFORMATION
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result causing property damage, per-
sonal injury or loss of life.

(Input = Btu/cu. ft. x cu. ft. metered in 3 minutes x
20)
Example #1:
For 8.29 W/m3gas, this becomes:
Input = m3metered in 3 minutes × 8.29 × 20
(For 1000 Btu/cu.ft. gas, this becomes:
Input = cu. ft. metered in 3 minutes × 1000 × 20)
Example #2:
For 8.70 W/m3gas this becomes:
Input = m3metered in 3 minutes × 8.70 × 20
(For 1050 Btu/cu.ft. gas, this becomes:
Input = cu. ft. metered in 3 minutes × 1050 × 20)
4. The higher heating value* of gas varies substantially for
different localities. Consult with Slant/Fin’s Technical
Service Dept. for re-orificing procedures if any of the
following apply:
a. Boiler (burner) is overfiring. CAUTION! National Fuel
Gas Code ANSI Z223.1-latest edition or CSA
B149.1-00 for natural gas and propane, does NOT
permit firing at a higher input rate than the input rate
indicated on the boiler rating plate in order to avoid
hazardous conditions such as explosion or carbon
monoxide poisoning.
b. Poor higher heating value* of gas is causing the
actual input to be substantially lower than the rating
plate indication.
* “Higher heating value” of gas is commonly known as a “heating value.”
The gas metered in 3 minutes to obtain rated input for each
boiler model, using 8.29 W/m3(1000 Btu/cu.ft.) gas is tabulated
below:
B. Main Burners
1. Fire the boiler continuously for at least 15 minutes, to reach
burner operating temperature.
2. Observe the flames, all burners. The base of all flame jets
should be blue. The tips should be blue shading to orange.
NOTE: Dust, disturbed by any movement, will cause bright
orange flames. Wait for dust to settle.
3. For one burner, close the air shutter until some of its flame jet
tips turn yellow-white, indicating insufficient primary air. Then
open shutter until whitish tips disappear completely. Set all
burner shutters to the same opening. Observe to make sure
that no yellow-white tips appear over any portion of the
flame. Small yellow tips at the pilot location are permitted.
NOTE: This adjustment method gives MINIMUM primary air
setting for safe combustion. DO NOT attempt to make this
adjustment unless burners are at operating temperature.
Adjustment should be made with burner access panel in
10 Sentinel
m3/hr cu.ft./hr. m3cu.ft.
1.98 70 0.099 3.50
2.97 105 0.149 5.25
3.96 140 0.198 7.00
4.95 175 0.248 8.75
5.94 210 0.297 10.50
6.93 245 0.347 12.25
BOILER RATED INPUT
8.29 W/m3(1000 Btu/cu. ft.)
Natural Gas
GAS CONSUMPTION
8.29 W/m3(1000 Btu/cu. ft.)
in 3 minutes, at rated input
11. Set thermostat to desired setting.
12. If the appliance will not operate, follow the instructions "To
Turn Off Gas To Appliance" and call your service techni-
cian or gas supplier
To Turn Off Gas To Appliance
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be
performed.
3. Remove control access panel.
4. Turn gas control knob clockwise until knob stops,
then continue to "OFF". DO NOT force.
5. Replace control access panel.
III. BURNER ADJUSTMENT
A. Adjust gas input rate:
1. Consult gas supplier for higher* heating value of gas –
W/m3(Btu/cu.ft.)
2. Set thermostat high enough so that boiler will remain on
while checking rate.
3. Measure manifold pressure at 3 mm (1/8") tapping. Cor-
rect manifold pressure for gas used is printed on boiler
rating plate. NOTE: Gas pressure may be adjusted by
turning pressure regulator screw on combination gas
valve (turn clockwise to increase pressure, counterclock-
wise to decrease pressure).
a. Input for PROPANE is approximately at rating shown
on rating plate when manifold pressure is 241 mm
(91/2") water column.
b. Input for NATURAL GAS is approximately at rating
when manifold pressure is 89 mm (31/2") water column,
but should be checked on the gas meter:
Input = W/m3 × m3 metered in 3 minutes × 20
Figure 8. Valve VR8204 or VR8304
Figure 9.

Sentinel 11
final operating position. Use of a mirror may be helpful to
observe flames. Note that burner ports are on top of main
burner tube.
C. Main Burner Ignition Checkout and Pilot Adjustment.
1. The pilot flame must not smother or snuff out when tested
as follows:
a. Main burner ignition from cold start – repeat.
b. Continued operation of main burner.
c. Main burner ignition with appliance at maximum oper-
ating temperature after prolonged operation.
NOTE: Observe operation of the pilot burner with appli-
ance doors in the final operating position. Use of a mirror
may be helpful.
2. Safety Shutdown Checkout
a. For proper operation the pilot should engulf the thermo-
couple or flame sensor as shown above.
b. To adjust pilot, turn pilot flow adjustment screw on valve
clockwise or counterclockwise to give a steady flame
enveloping 10 mm to 13 mm (3/8 to 1/2 inch) of the tip of
the thermocouple or flame sensor. Note that turning the
pilot adjust screw clockwise will decrease the pilot
flame.
c. Check safety shutdown of gas valve by following proce-
dure outlined in "CARE and MAINTENANCE" section.
WARNING: THE FLOW OF COMBUSTION AND VENTILATING
AIR TO THE BOILER SHOULD NOT BE OBSTRUCTED.
This section must be brought to the attention of the owner by
the installer so that the owner can make the necessary
arrangements with a qualified service agency for the periodic
care and maintenance of this boiler. The installer must inform
the owner that the gas supplier can recommend a number of
qualified service agencies. The installer must also inform the
owner that the lack of proper care and maintenance of this
boiler and any fuel burning equipment may result in a haz-
ardous condition.
1. GENERAL MAINTENANCE (Refer also to Owner’s
Information Manual)
These operations are recommended to be performed at
regular intervals:
A. BOILER HEATING SURFACES: clean off all coatings
found.
B. BOILER CONTROLS: check contacts, settings, correct
functioning.
Figure 10.
Figure 11.
C. PIPING: check piping and accessories for leaks.
D. CHIMNEY VENTING SYSTEM: check for obstructions
and leaks.
E. BOILER ROOM AIR SUPPLY: check air supply openings
for continued POSITIVE supply of air as required. Air
needs are greatest in cold weather. Air vents must be
open and free of obstruction.
F. WATER SYSTEM CHECK:
1. System to be full of water, and pressure to remain sta-
ble at correct setting on gauge.
2. Air control system: noise and air binding in system
should be corrected.
3. Water lines: slightest leaks should be corrected.
4. Low water cutoff, for operation (see instructions fur-
nished with unit).
2. WATER LEVEL CHECK DURING HEATING SEASON
A. Check water pressure regularly and add water slowly to
system when needed. If much water is added, venting
may be necessary.
B. Regular loss of water from water boiler system may indi-
cate either a system leak, or a faulty air control system,
or a faulty automatic fill valve, or a faulty relief valve.
3. ANNUAL INSPECTION AND CLEANING
A. It is important that this boiler be inspected by a compe-
tent serviceperson to help insure safe and reliable oper-
ation.
B. Check for gas leaks from valve and gas piping to burn-
ers and pilot. If leaks are found, repair or replace as
required.
C. This inspection should include:
1. Controls check. See "Safety Check for Control
System" (Section 4) below.
2. Recheck of input gas rate to burners. See "Initial Start"
paragraph in "Operating instructions" section.
3. Re-adjusting for best flame characteristics of main
flame and pilot(s).
See "Initial Start" paragraph in "Operating Instruc-
tions" section and see "Burner Adjustment" section.
4. Burner and boiler flue passage cleanliness:
BURNER AND FLUE CLEANING (see figure 12). It is
suggested that paper be placed on burners to collect
any foreign material when cleaning flues.
a. Remove jacket top and flue cover.
b. Use wire brush to clean flueways.
c. Replace flue cover and re-seal with furnace
cement. Replace jacket top. Remove and dispose
of paper and accumulated material.
d. If burner surfaces are not clean, or if uneven flame
indicates plugged burner ports, remove and clean
burners.
NOTE-TO REMOVE BURNERS:
1. Disconnect pilot at pilot mount, or disconnect pilot gas
line at gas valve, before removing burners next to pilot.
2. Remove burner mounting clip.
3. Lift burner and remove burner from orifice.
4. Clean and replace burners* and pilot. Adjust burners as
described on page 10.
*To clean burners run a clean flue brush up the tube until all foreign mat-
ter is removed.
4. SAFETY CHECK FOR CONTROL SYSTEM
A. High limit control test: Set thermostat high enough for
CARE AND MAINTENANCE
10–13 mm (3/8 – 1/2")

12 Sentinel
systems to protect against freeze-up in the event of
power failure or control shutdown when the building is
unoccupied. It should be recognized that unless the
building is kept above freezing temperature by some
means, the plumbing system is not protected.
Two types of anti-freeze may be used: ETHYLENE GLY-
COL, has desirable properties, but is toxic. Its use may
be prohibited when system water/glycol solution is in
contact with a potable water vessel (as with a tankless
heater). PROPYLENE GLYCOL is used in the quick-
freeze food industry; it is practically non-toxic. Its use
may be permitted when tankless heaters are used. When
anti-freeze must be used, inhibited propylene glycol is
recommended. Useful information on the characteristics,
mixing proportions, etc. of glycol in heating systems is
given in Technical Topics No. 2A, available from the
Hydronics Institute 34 Russo Place, Berkeley Heights,
NJ 07922. Consult glycol manufacturers for sources of
propylene glycol.
B. Water Treatment:
A good water treatment program will not only extend the
useful life of this boiler but it will also save much of the
time and expense of repairs made necessary by pre-
ventable occurrences.
A reputable water treatment company should be con-
sulted to evaluate and determine the best overall treat-
ment program for your boiler equipment.
6. KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
boiler water temperature to reach high limit control set-
ting. When this temperature is reached, the high limit
switch should open, and the main gas valve should
close automatically. If the high limit does not operate to
close the main gas valve, the valve, the high limit or the
wiring is faulty. Repair or replace immediately.
B. Gas valve safety shutdown test:
1. For boiler equipped with constant burning pilot, with
main burners firing, disconnect the thermocouple or
thermopile generator from the gas valve. The gas
valve should Immediately shut off the main burners
and the pilot.
2. For boilers equipped with Honeywell S8600 inter-
mittent pilot system, with main burners firing, discon-
nect the ignition cable from the S8600 IGNITOR BOX.
The gas valve should shut off the main burners.
C. Check for gas leaks from valve and gas piping to burn-
ers and pilot. If leaks are found, repair or replace as
required.
5. PROVIDING PROTECTION FROM FREEZING
A. Anti-freeze is sometimes used in hydronic heating
Figure 13.
JACKET TOP
BRUSH
FLUE COLLECTOR
(FLUE COVER)
BOILER
CLEANING
WARNING:
The ceramic combustion chamber in the burner box contains
crystalline silica.
Wear proper dust mask and gloves when servicing combustion
chamber of burners.
Crystallilne silica has been identified as a carcinogenic or possibly
carcinogenic to humans.

Sentinel 13
SEQUENCE OF OPERATION FOR SENTINEL BOILERS
EQUIPPED WITH CONTINUOUS BURNING PILOTS
(HONEYWELL)
LIGHTED PILOT HEATS THERMOCOUPLE AND KEEPS PILOTSTAT OPEN.
THERMOSTAT CALLS FOR HEAT
HIGH LIMIT CONTACTS CLOSED?
LOW WATER CUT-OFF (WHEN USED)
CONTACTS CLOSED?
VENT DAMPER RELAY ENERGIZED.
VENT DAMPER MOTOR OPENS VENT DAMPER.
END SWITCH CLOSES.
MAIN VALVE OPERATOR OPENS.
LIGHTED PILOT IGNITES MAIN BURNERS.
IF PILOT SHOULD BLOW OUT, THERMOCOUPLE
WILL SHUT OFF MAIN BURNER.
WHEN THERMOSTAT IS SATISFIED, OR WHEN HIGH LIMIT
OR LOW WATER CUT-OFF CONTACTS ARE OPEN, MAIN
VALVE OPERATOR CLOSES.
VENT DAMPER CLOSES. CIRCULATOR OFF.
SYSTEM GOES TO STANDBY WITH LIGHTED PILOT.
CIRCULATOR ENERGIZED
(IF COMBINATION AQUASTAT
CONTROL USED)
NO FURTHER
ACTION
SEQUENCE OF OPERATION FOR SENTINEL BOILERS EQUIPPED WITH
HONEYWELL INTERMITTENT IGNITION SYSTEM (IID)
THERMOSTAT CALLS FOR HEAT
HIGH LIMIT CONTACTS CLOSED?
LOW WATER CUT-OFF (WHEN USED)
CONTACTS CLOSED?
VENT DAMPER RELAY ENERGIZED.
VENT DAMPER MOTOR OPENS VENT DAMPER.
END SWITCH CLOSES.
IGNITION CONTROL ENERGIZED
THE PILOT FLAME ESTABLISHED ?
SPARK GENERATOR OFF. MAIN VALVE
OPERATOR OPENS. MODULE MONITORS
PILOT FLAME.
WHEN THERMOSTAT IS SATISFIED OR WHEN HIGH LIMIT OR LOW WATER CUT-OFF CONTACTS ARE OPEN, VALVE OPERATORS
CLOSE. PILOT and MAIN BURNERS OFF. VENT DAMPER CLOSES. CIRCULATOR OFF. SYSTEM GOES TO STANDBY.
SPARK GENERATOR MODULE POWERED.
S8600F OR S8600M: IGNITION SPARK STARTS AND PILOT VALVE OPERATOR OPENS.
S8670E: IGNITION SPARK AND PILOT VALVE OPERATOR DELAYED FOR 30-70 SECONDS.
L.P. PROPANE GAS (S8600M and S8670E)
IGNITION TRIAL CONTINUES FOR 90 SEC-
ONDS. AFTER TRIAL FOR IGNITION, SYSTEM
SHUTS OFF. AFTER 5 MINUTES MODULE RE-
INSTATES TRIAL FOR IGNITION. IF PILOT
FLAME NOT ESTABLISHED, IGNITION TRIAL,
SYSTEM SHUT-OFF AND 5 MINUTES WAIT
SEQUENCE REPEATS CONTINUOUSLY.
NATURAL GAS (S8600F) IGNI-
TION SPARK CONTINUES. PILOT
VALVE REMAINS OPEN UNTIL
SYSTEM IS RESET.
CIRCULATOR ENERGIZED
(IF COMBINATION AQUASTAT
CONTROL USED)
NO FURTHER
ACTION
NO
YES
YES
NO
YES
NONO
Ð
Ð
Ð
Î
Î
Î
Î
Ð
Ð
IF BOILER SHUTS DOWN ON HIGH LIMIT OR OTHER LINE VOLTAGE SAFETY CONTROLS, THE DAMPER WILL REMAIN OPEN
Ð
Ð
Ð
Ð
Ð
Ð
Ð
Ð
Ð
Ð
IF BOILER SHUTS DOWN ON HIGH LIMIT OR OTHER LINE VOLTAGE SAFETY CONTROLS, THE DAMPER WILL REMAIN OPEN
Ð

14 Sentinel
PUMP OR VALVE ZONING OF WATER BOILERS
COMBINATION CONTROLS WITH T TV Z TERMINALS*
Pump Zoning system using R845A Relay.
One R845A needed for each circulator.
NOTE: Pumps are powered from C1 .Total
pump load must not exceed 7.4 amp rating of
combination control pump switch.
Zone valve zoning system using Honeywell V8043F zone valves.
Pump zoning system using R8230C Relays.
*For zoning diagrams, combination controls without T TV Z terminals and non-combination control systems, consult Slant/Fin Zoning Tech. Bulletin.
NOTE: Pumps are powered from C1 . Total pump load must not exceed 7.4 amp rating of combination control pump switch.

Sentinel 15
GENERAL TROUBLESHOOTING GUIDE FOR SERVICEPEOPLE
BURNERS FAIL TO OPERATE
CAUSE
1. Safety pilot out, or flame too low.
2. Gas supply valve shut off.
3. Electric switch open.
4. Blown or defective line fuse.
5. Operating or limit control contacts open or dirty.
6. Defective gas valve or pressure regulator; or plugged
bleed line.
7. Defective low voltage transformer.
8. Obstruction at main burner orifice.
9. Break in wiring or loose contact at control terminals.
10. Improper wiring.
11. Improper controls.
12. Rollout or blocked vent safety switch open.
BURNERS WILL NOT SHUT OFF
CAUSE
1. Defective operating control, gas valve, or high limit
control.
2. Improper wiring or short circuit.
FLASH BACK—BURNING AT ORIFICES
CAUSE
1. Manifold gas pressure too low.
2. Improper primary air adjustment.
3. Gas regulator bleed too slow.
4. Burrs on orifice.
5. Improperly drilled orifice plugs.
6. Leaking automatic gas valve.
7. Adverse draft condition in boiler room.
8. Low main gas pressure.
9. Safety pilot improperly installed.
DELAYED IGNITION
CAUSE
1. Pilot flame too low.
2. Pilot burner ports or pilot orifice clogged.
3. Burners or orifices out of alignment.
4. Excessive primary air.
5. Excessive burner input.
6. Adverse draft condition in boiler room.
FUMES AND GAS ODORS
CAUSE
1. Leaks in gas piping or accessories.
2. Gas leaks in service line or meter connections.
3. Blocked chimney.
4. Boiler flueways blocked with soot.
5. Undersized breeching or too many turns in breeching.
6. Adverse draft condition in boiler room.
7. Overfiring.
CONDENSATION IN BOILER FLUES OR IN VENT SYSTEM
CAUSE
1. Underfiring.
2. Boiler water maintained at too low a temperature level.
3. Long horizontal run of smokepipe.
4. Inadequate chimney or venting system.
REMEDY
1. Check, clean, re-light. See instructions.
2. Open gas valve(s).
3. Close switch.
4. Replace fuse.
5. Check control. Clean contacts or replace control.
6. Repair or replace.
7. Replace transformer.
8. Check, clean and reinstall.
9. Check with test-light and correct.
10. Check and correct in accordance with wiring diagrams
included with appliance instructions.
11. Install proper controls.
12. Replace rollout switch (inspect flue passages prior to
replacement) or reset blocked vent safety switch by
depressing the reset button.
REMEDY
1. Check, repair or replace.
2. Check wiring and controls.
REMEDY
1. Adjust to proper manifold pressure.
2. Adjust air to produce soft, clean flame.
3. Adjust bleed opening.
4. Remove burrs.
5. Install orifice plugs with proper drilling.
6. Repair or replace.
7. Check air supply and venting system.
8. Contact utility.
9. Correct to manufacturer's recommendations.
REMEDY
1. Increase gas supply to pilot.
2. Clean ports or orifices.
3. Realign burners or manifold.
4. Adjust primary air shutters.
5. Check and reduce to input shown on rating plate.
6. Check air supply and venting system.
REMEDY
1. Locate leaks and repair.
2. Close service supply valve—shut down appliance and
notify utility.
3. Check and repair chimney.
4. Clean flueways and adjust burners as described in the
installation instructions.
5. Check manufacturer's recommendations.
6. Check air supply and venting system.
7. Adjust gas input to that shown on boiler rating plate.
REMEDY
1. Increase firing rate to that shown on rating plate.
2. Set low limit controls to maintain a higher water temper-
ature. If boiler is not equipped with low limit replace
with one which has a combination low limit/high limit
aquastat.
3. Relocate boiler or insulate breeching.
4. Check chimney and venting recommendations.

16 Sentinel
IF REPLACEMENT PARTS ARE NEEDED
When parts are needed, refer to boiler model and serial number
shown on the boiler name/rating plate.Whenever possible refer
to the original order by number and date.
Control identification and replacement should not be attempted
by unskilled personnel. Only simple, easily-identified controls
and parts maybe obtained locally. All other controls and parts
should be identified by and ordered from Slant/Fin. Relief/Safe-
ty valves must be ASME rated for the pressure and gross output
of the boiler.
For replacement parts, heating contractors should contact their
Slant/Fin boiler distributor.
(a) Seal any unused openings in the common venting system.
(b) Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deficiencies which
could cause an unsafe condition.
(c) Insofar as is practical, close all building doors and win-
dows and all doors between the space in which the appli-
ances remaining connected to the common venting
system are located and other spaces of the building. Turn
on clothes dryer and any appliance not connected to the
common venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they will oper-
ate at maximum speed. DO NOT operate a summer
exhaust fan. Close fireplace dampers.
(d) Place in operation the appliance being inspected. Follow
the lighting instructions. Adjust thermostat so appliance
will operate continuously.
(e) Test for spillage at the draft hood relief opening after 5 min-
utes of main burner operation. Use the flame of a match or
candle, or smoke from a cigarette, cigar or pipe.
(f) After it has been determined that each appliance remain-
ing connected to the common venting system properly
vents when tested as outlined above, return doors, win-
dows, exhaust fans, fireplace dampers and any other gas-
burning appliance to their previous conditions of use.
(g) Any improper operation of the common venting system
should be corrected so the installation conforms with the
National Fuel Gas Code, ANSI Z223.1-latest edition or CSA
B149.1-00 for natural gas and propane. When resizing any
portion of the common venting system, the common vent-
ing system should be resized to approach the minimum
size as determined using the appropriate tables in Appen-
dix G in the National Fuel Gas Code, ANSI Z223.1-latest
edition or CSA B149.1-00 for natural gas and propane.
APPENDIX A
Removal of Existing Boiler from Common Vent System
"At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to
the common venting system placed in operation, while the other appliances remaining connected to the common venting
system are not in operation."
Thermostatic bypass valves type TV are designed to allow
boilers to reach their optimum operating temperature quickly
and to prevent cool/cold return temperatures from affecting
them.
Operation/Installation: The thermostat within the "TV" valve
allows full flow through the bypass until the predetermined
temperature is reached.
Start Up: With the balancing valve on the bypass fully open,
operate the boiler until it reaches its normal operating temper-
ature. If hot water does not automatically flow to the system
then adjust (throttle) the bypass balancing valve until flow (hot
water) to the system is established. If flow is already to the sys-
tem, no adjustment is required.
Return Mounting: On the return "TV" allows full bypass until the
return temperature reaches 46 degrees Celsius (115 degrees
Fahrenheit). "TV" will begin opening while maintaining a 46
degrees Celsius (115 degrees Fahrenheit) minimum return
temperature. When return temperatures reach approximately
54 degrees Celsius (130 degrees Fahrenheit) most of the flow
will be through the system.
Mounting: "TV" can be installed in any position. An adjustable
balancing valve (or ball valve) must be installed on the bypass.
APPENDIX B
Thermostatic Bypass Valve
SIZE
25 mm (1") NPT (female x female)
32 mm (1-1/4") NPT (female x female)
38 mm (1-1/2") NPT (female x female)
S/F PART NO.
116040
116041
116042
OPEN TEMP.
46 ºC 115 ºF
46 ºC 115 ºF
46 ºC 115 ºF
A
107 mm 4.2"
114 mm 4.5"
119 mm 4.7"
A/2
53 mm 2.1"
57 mm 2.25"
60 mm 2.35"
Cv
10.5
16.4
20.2
Kv
8.96
13.99
17.23
WEIGHT
1.5 kg 3.3 lb
2.0 kg 4.4 lb
2.4 kg 5.3 lb
Max. operating pressure 6 bar (85 psi) Maximum operating temperature 110°C (230°F)
The flow factor Kv is the number of cubic meters per hour of water at 20°C which will flow through the valve with a pressure drop of 1kg/cm2(1
bar).
The flow coefficient Cv is the flow of water at 60°F in US gallons per minute at a pressure drop of 1lb/in2across the valve.

Sentinel 17
APPENDIX C
Thermostat Heat Anticipator Settings
Fixed anticipator thermostats are not adjustable.
Adjustable anticipator thermostats, depending on thermostat
model, may be adjustable from a .18 to a .9 setting by moving
a pointer on the anticipator.
The higher the anticipator setting (towards .9) the longer it will
take for the thermostat to respond to a change in room tem-
perature. Too high a setting and the boiler will be slow to
respond to a temperature change in the room. This can cause
the room temperature to drop to an uncomfortable level before
the boiler starts. This may generate homeowner complaints.
The lower the anticipator setting (toward .18) the faster the
thermostat will respond to a change in room temperature. Too
low a setting and the boiler will short cycle. Boiler short cycling
will cause unnecessary wear on the equipment and in the case
of oil boilers it can lead to poor combustion and more frequent
cleaning of the combustion area.
It is important to understand what the thermostat is controlling
and then determine the amp rating of that relay, gas valve,
zone valve or control. This information is usually stamped
somewhere on the component. A properly set anticipator will
allow the system to operate at its maximum effectiveness.
Recent investigations of boilers which were installed in hard
water areas, revealed that mineral deposits had accumulated
at the bottom of the heat exchanger. In addition, sludge,
scale and other solid contaminants were present in boilers
installed in older systems or where the water was supplied
from a well. This accumulation creates an insulating layer
that drastically affects boiler efficiency by reducing the
transmission of heat through this primary transfer surface
and causes extreme metal temperatures that eventually
crack the heat exchanger.
RECOMMENDATIONS:
On all installations in hard water areas:
1. The system should be thoroughly inspected for leaks which
must be repaired however minor they may be.
2. The initial water charge of the system must be treated to
reduce its hardness to an acceptable level.
In addition to the aforementioned, older systems and those
supplied from wells may require that a filter or strainer be incor-
porated in the circuit at some point on the return line closest to
the boiler. Suitable water treatment filters are commercially
available for this purpose.
THE TERMS OF THE BOILER WARRANTY WILL NOT
APPLY TO FAILURES ENCOUNTERED UNDER THESE
CIRCUMSTANCES.
WE STRONGLY RECOMMEND THAT YOU CONVEY THIS
VITAL INFORMATION TO ALL PARTIES CONCERNED.
APPENDIX D
Accumulation of Foreign Deposits in Heat Exchanger
APPENDIX E
Use of non-oxygen diffusion barrier underfloor tubing
The boiler warranty does not cover leaks resulting from
corrosion caused by the use of underfloor plastic tubing
without an oxygen diffusion barrier. Systems must have
the non-oxygen diffusion barrier tubing separated from the
boiler with a heat exchanger, Slant/Fin recommends the
use of underfloor plastic tubing with an oxygen diffusion
barrier. Other system components may also require
protection from oxygen permeation.

18 Sentinel

Sentinel 19

SLANT/FIN LTD/LTEE, 6450 Northam Drive, Mississauga, Ontario L4V 1H9
• Phone: [phone] / FAX: [phone] / Order Desk Fax: [phone]
www.slantfin.ca / E-mail: [email protected] / [email protected]