Slant/Fin VICTORY II VHS Series User manual

Subject to technical changes
Changes may be made without notice to the illustrations, process steps,
and technical data as a result of our policy of continuous improvement.
VSL II QUICK START GUIDE
DIRECT-VENT SEALED COMBUSTION CONDENSING BOILER
~ GAS-FIRED BOILER FOR NATURAL AND L.P. PROPANE GASES ~
This Quick Start Guide must be left
with owner and should be hung on or
adjacent to the boiler for reference.
This manual is only a quick reference guide and is not meant
to replace or supplement the installation and maintenance
manual supplied with the appliance. Before performing the
installation or any service read the installation and mainte-
nance instructions supplied with this boiler thoroughly!
In the Commonwealth of Massachusetts this boiler must
be installed by a licensed Plumber or Gas Fitter.
This manual must only be used by a licensed plumber, a
licensed gas fitter, the gas supplier, or a qualified service
technician/installer. Failure to comply could result in sub-
stantial property damage, severe personal injury, or loss
of life. Slant/fin is not liable for any damages or defects re-
sulting from improper installation or service of this boiler.
!
CAUTION
NOTICE
!
WARNING
The installation must comply with the requirements of the
authority having jurisdiction or, in the absence of such re-
quirements, to the latest edition of the National Fuel Gas
Code, ANSI Z223.1/NFPA 54. In Canada, installation must
be in accordance with the requirements of CAN/CSA
B149.1, Natural Gas and Propane Installation Code.
Where required by the authority having jurisdiction, the
installation must comply with the Standard for Controls
and Safety Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1.
!
WARNING
IMPORTANT
READ ALL OF THE FOLLOWING WARNINGS AND STATEMENTS
BEFORE READING THE QUICK GUIDE INSTRUC
TIONS.
TABLE OF CONTENTS
CONTENTS............................................................PAGE
CLEARANCES .............................................................2
UNPACKING THE BOILER .......................................... 2
GAS TYPE SELECTION ..............................................3
MOUNTING THE BOILER ............................................3
GAS PIPING .................................................................3
WATER PIPING .........................................................3-4
CONDENSATE DISPOSAL ..........................................4
VENTING.......................................................................5
ELECTRICAL CONNECTIONS ....................................6
BOILER PROGRAMMING ............................................6
BOILER STARTUP & COMBUSTION ANALYSIS ........7

2Slant/Fin VSL II Quick Start Guide
Required Clearances
The boiler requires certain clearances to combustibles, reference
the tables below to ensure the location selected is suitable for in-
stalling the boiler. It is highly recommended that the boiler be pro-
vided with adequate clearances for ease of installation, service, and
maintenance, these clearances are referenced below
Figure 1. Service clearances
Minimum
Required
Clearances to
Combustibles
Recommended
Service
Clearances
Ceiling 212
Front 224
Rear 0 0
Left/Right side 2 4
Floor 212
Vent (first 3ft
from the boiler)*
1See vent
manufacturer
Vent (Beyond 3ft
from the boiler)*
1/4 See vent
manufacturer
Supply/Return piping 1/4 N/A
Unpacking the Boiler
The boiler is packaged with the following list of parts and fittings. Please inspect the contents of the
packaging and make sure everything on the list has been removed from the box before disposal.

Gas Type Selection
The boiler comes from the factory setup for natural gas. The boiler
comes with a conversion kit that must be used if the boiler is to be
installed and fired with propane gas. Instructions for the conversion
of the boiler are located in the installation and maintenance manual.
Mounting the Boiler
The boiler bracket should be securely fixed to a wall that is suffi-
ciently strong enough to bear the weight of the boiler when filled
with water as well as the attached plumbing. The boiler should not
be used to support the plumbing system, all piping attached to the
boiler must be properly supported with appropriate support brack-
ets. Do not install the boiler on drywall unless anchoring directly to
the studs. Install the boiler bracket to the wall with the provided
mounting materials. Ensure that it is level before hanging the boiler.
Gas Piping
The boiler gas piping must be sized to accommodate the full load
of the boiler in addition to all the other gas appliances in the build-
ing. The boiler should be the first appliance connected to the gas
supply line. Never use a ½” corrugated appliance adapter for con-
necting the boiler. If using propane contact your propane supplier
to size gas piping, tanks, and 100% lockup gas pressure regulator.
Install a manual gas shutoff valve below the boiler following all local
and national code. This valve should be a full port gas ball valve.
Install a drip leg/sediment trap as well as a union to facilitate serv-
icing of the unit. See the installation and maintenance manual for
complete instructions.The nominal natural gas pressure is 7” W.C.
The nominal propane gas pressure is 11 W.C.
Water Piping
The heating system should be flushed before fitting the boiler to the
system, see the installation and maintenance manual for system
flushing instructions.
The boiler must be connected to the heating system utilizing pri-
mary secondary piping to hydraulically separate it from the system.
Piping can be accomplished in two ways either through the use of
a Low Loss Header (LLH) or through Closely Spaced Tees (CST).
When using a low loss header please refer to the header manufac-
turer for sizing and installation information. When using closely
spaced Tees they must be sized and pipe according to standard
design practices based on the btu output of the boiler and the flow
rate. Follow the two piping illustrations below for valve and pump
placement. The PRV must be installed directly below the boiler be-
fore any shutoff valves. Install unions as shown in the drawing as
well as ball valves for boiler isolation to allow for service and main-
tenance of the boiler. Important: Primary boiler loop piping must
be a minimum diameter for each model
VSL II-90: 1"
VSL II-150: 1" 1/4"
VSL II - 200: 1 1/4"
VSL II - 250: 1 1/2"
Primary Secondary Piping:
Primary secondary piping must be used at all times with this boiler.
Failure to properly size and install primary secondary piping may
cause damage to the boiler and void the warranty. There are two
standardized methods for primary secondary piping, the first is to
use Closely Spaced Tees here after referred to as CST. The second
method is to use a third party Low Loss Header also called a Hy-
draulic separator.
Slant/Fin VSL II Quick Start Guide 3
Figure 2. Mounting boiler Illustration
Figure 1. Service clearances
Gas shuto valve,
shown in open po-
sition
Appliance
Gas
Inlet
C

Option 1 Closely Spaced Tees Design
In order to properly design a CST system there are three main rules:
The distance between the centerline of the two tees should not be
greater than four times the pipe diameter of the primary loop. Nor shall
it exceed 12 inches.
The return side of the system entering the first tee must have a mini-
mum straight length before the first tee of eight times the pipe diameter
of the primary loop.This minimum shall not be less than 8 inches.
The supply side of the system exiting the second tee must have a min-
imum straight length after the second tee of four times the pipe diameter
of the primary loop.This minimum shall not be less than 4 inches.
Option 2 Low Loss Header
The use of a third party prefabricated low loss header eliminates the
need to field assemble and design primary secondary piping. If using
a low loss header use the sizing information of the manufacturer to cor-
rectly match its size to the size of the boiler.
Condensate Disposal
The condensate from the boiler must be disposed of. Connect the con-
densate drain on the bottom of the boiler to a drain line, this line should
be sloped down and away from the boiler.
There must be an air gap between the drain line connected to the bot-
tom of the boiler and the drain connect to the buildings pumping.
A condensate pump may be required in some installations if the boiler
is lower than the drain.
A condensate neutralizer should be installed, but is not always required
check local code.
Use materials approved by the authority having jurisdiction. In absence
of such authority, PVC and CPVC pipe must comply with ASTM D1785,
F441 or D2665. Cement and primer must comply with ASTM D2564
or F493. For Canada, use CSA or ULC certified PVC or CPVC pipe,
fittings and cement. Never use copper, galvanized, or black iron pipe to
drain the condensate. See the installation and maintenance manual
for complete instructions.
Drawing 1. LLH
Drawing 2. CST
4Slant/Fin VSL II Quick Start Guide
Purging the boiler/primary loop
The boiler loop and boiler must be pruged of air before the
boiler is put into operation. The boiler can be purged of air
by running water through it in the same manner as a zone
is purged. When piping the boiler loop ensure there is way
to purge it with the necessary drain connections and shut-
off valves.
Water pressure and water flow.
The VSL II boilers have a built-in water pressure sensor
and water flow meter. The minimum water pressure is
9 psi and the recommended water pressure is 15 psi
minimum. The boilers are supplied with 30 psi pressure
relief valves.
The minimum water flows are as follows:
VSL II-90 minimum water flow = 1.4 GPM
VSL II-150 minimum water flow = 2 GPM
VSL II-200 minimum water flow = 4 GPM
VSL II-250 minimum water flow = 4 GPM

Slant/Fin VSL II Quick Start Guide 5
Venting Flue Exhaust and Combustion Air
This boiler may be vented in a number of different configurations
utilizing both direct vent sealed combustion venting systems and
single pipe room air venting systems. All vent material and config-
urations must be approved. See the installation and maintenance
manual for complete instructions. Below are examples of possible
venting configurations. Additional venting information can be found
in the manual for both direct vent and room air installations. Multiple
venting material options are available for use with the boiler includ-
ing: solid core PVC, CPVC, Polypropylene PP, and stainless stell.

6Slant/Fin VSL II Quick Start Guide
Electrical Connections
The boiler has both 24V and 120V terminal strips, pay special at-
tention to properly identify both types of wiring in the system. The
boiler has the ability to power and control three separate pumps:
boiler loop pump, DHW indirect tank pump, and system pump. The
boiler also utilizes an outdoor NTC sensor as well as an indirect
tank NTC sensor when controlling DHW production. These sen-
sors are supplied with the boiler. External alarm contacts as well
as external safety devices maybe connected to the boiler. A room
thermostat or TT connection from a zone valve/ pump relay control
must always be connected to the boiler to generate a call for heat.
Additional information about the wiring of the boiler and functionality
may be found in the installation and maintenance manual supplied
with the boiler.
System
Circulator

Slant/Fin VSL II Quick Start Guide 7
Boiler Programming
The boiler should always be programmed by the installer during
startup. The outdoor reset curve should be set as well as the mini-
mum and maximum water temperatures that correspond to the type
of heat emitters installed in the dwelling. Complete programming in-
formation may be found in the installation and maintenance manual
supplied with the boiler.
To enter the Installer’s Menu level for boiler programming follow the
steps outlined below.
1. Press and hold the RESET and buttons together
for 5 seconds until the icon is displayed, then release
both buttons.
2. Use the and buttons to move up and down
through the parameter list.
3. To change a parameter press the RESET button until the
parameter is flashing and then use the and
buttons to change the value.
4. Press and release the RESET button to store the value
of the changed parameter.
5. To exit the installer’s menu press and hold the RESET
button for 5 seconds until the icon is no longer visible.
The following list of parameters must be programmed at startup of
the boiler
A - Key to reduce the supply water temperature;
B - Multifunctional key: reset any lockouts; access to user and
installer menu.
C - Key to increase the supply water temperature;
D - Flame icon, is present when the flame is present;
E - Radiator icon. Present when heating is enabled to work.
Blinking when heating is active;
F - Faucet icon. Present when an indirect water heater is enabled
to work. Blinking when an indirect water heater (coil water
heater) is in load;
H - Unit of measure of the water system pressure;
L - Cascade boiler indicators: Light when boiler is burning; blinking
when boiler is in lockout or in blocking error:
1
= Boiler 1 (manager)
2
= Boiler 2 (dependent)
3
= Boiler 3 (dependent)
4
= Boiler 4 (dependent)
M - Water pressure gauge and indicator of the parameters
G - Icon indicating access to the installer menu
N - Supply water temperature gauge and indicator of the
parameters value
O - Unit of measure of the temperature
P - Icon displayed when the outdoor sensor is active
Q - Flame crossed icon: is present when the appliance is in lockout
or blocking error condition
R -
Multifunctional key: increase the indirect water heater temp; scroll
the parameters; increase the parameters’ value;
S - Multifunctional key: decrease the indirect water heater
temp; scroll the parameters; decrease the parameters’ value;
T - On-Off Main power switch

8Slant/Fin VSL II Quick Start Guide
Par. 2022
Par. 2024
Outdoor temperature (˚F)
Par. 2021
Par. 2023
Par. 2020
Supply Calculated temperature (˚F)
PARA
METER
DESCRIPTION
FACTORY
SETTINGS
2020 Warm Weather shutdown temperature 69˚F
2021 Design day temperature
outdoor temperature 24˚F
2022 Design day supply water temperature 176˚F
2023 Spring /Fall outdoor temperature
corresponding to parameter 2024 69˚F
2024 Minimum supply water temperature 104˚F
Boiler Startup and Combustion Analysis
Before placing the boiler into service the combustion must be prop-
erly adjusted. Setting the combustion requires a combustion ana-
lyzer in working order that has been calibrated. A digital manometer
should also be available for testing incoming gas pressure. Once
the boiler has had the combustion set, a test report should be gen-
erated and left with the boiler as proof of correct startup and for ref-
erence for future maintenance. An explanation of complete
combustion analysis and start up procedures can be found in the
installation and maintenance manual supplied with the boiler.
The combustion analysis must be done by a qualified technician.
Ensure there is a sufficient way to emit the heat generated by the boiler
to allow for combustion testing, this can be accomplished by creating a
call for heat in all the zones or if using an indirect tank by running the
DHW at a faucet.
1. Enter the installers menu.
2. Scroll to parameter 2010 and set to High. Boiler will run for 20
minutes on High Fire.
3. Wait for the boiler to stabilize this may take a few minutes.
4. Insert the combustion analyzers probe into the test port
on the exhaust vent.
5. Wait till the readings stabilize and then check there range against
the table below.
6. If the combustion must be adjusted use a 2.5mm Allen wrench to
turn screw E on the gas valve. Turning the screw clockwise will
reduce the CO2 reading, while turning the adjustment screw
counter clockwise will increase the C02 level. Turn the screw in
quarter turn increments waiting for the readings to stabilize
between each turn.
7. Once the reading on high fire matches the desired level change
parameter 2010 to Low. Boiler will run for 20 minutes on Low Fire.
8. Ensure that the reading at low fire match the range in the table
given below, if they fall outside the given range contact technical
support.
9. Set parameter 2010 to Off, close and seal the combustion probe
port. The commissioning of the boiler is now complete.

Slant/Fin VSL II Quick Start Guide 9
G
A
E
D
F
020017.01.016
Boiler
Model
CO2 at
High Fire
CO2 at
Low Fire
O2 at
High Fire
CO2 at
Low Fire
NG
8.6% - 8.9%
8.5 % - 9% 5.6% - 5.1% 5.8% - 4.9%
LP 9.6% - 9.8% 9.5% - 11.5% 6.3% - 6% 6.4% - 3.4%
A - Gas orifice
D - Inlet gas pressure probe
E - CO2 adjusting screw
F - Factory adjusted regulator
(Should never be touched)
G O-ring gasket
DO NOT adjust screws “E” and/or “F” (Figure 12-1). These screws are factory-set for the correct gas
flow and outlet pressure. Attempting to alter the gas valve setting could result in in excessive levels of
carbon monoxide that can cause severe personal injury, death, or substantial property damage.
WARNING!!!

10 Slant/Fin VSL II Quick Start Guide
20˚F rT System
Boiler Model GPM Feet of Head Grundfos Model Taco Pump Model Wilo Model
90A 8 21.3 UPS26-99 (Speed 3) 0011 Star 30 F
150A 13 13 UPS26-99 (Speed 2) 0011 Star 17 FX
199A 18 28 UPS26-150 (Speed 3) 2450 Top-S 1.5x40
250A 22 NA NA NA NA
25˚F rT System
Boiler Model GPM Feet of Head Grundfos Model Taco Pump Model Wilo Model
90A 7 17 UPS26-99 (Speed 2) 0014 Star 30 F
150A 11 11 UPS26-99 (Speed 2) 0012 Star 17 FX
199A 14 19 UPS26-99 (Speed 3) 0013 Top-S 1.25x25
250A 18 28 UPS26-150 (Speed 3) 2450 Top-S 1.5x40
30˚F rT System
Boiler Model GPM Feet of Head Grundfos Model Taco Pump Model Wilo Model
90A 5 9 UPS15-58 (Speed 2) 008 Star 21 F
150A 9 7 UPS15-58 (Speed 3) 0010 Star 21 F
199A 12 15 UPS26-99 (Speed 2) 0011 Star 30 F
250A 15 22 UPS26-150 (Speed 2) 2450 Top-S 1.25x35
30˚F rT Boiler Loop with Glycol Pressure Drops
Boiler Model GPM Feet of Head 100% Water Feet of Head 30% Glycol Feet of Head 50% Glycol
90A 5 9 11 12
150A 9 7 8 10
199A 12 15 18 20
250A 15 22 26 30
Circulator Sizing Chart for Systems with Glycol
When sizing pressure drop through the boiler using glycol an additional 19% pressure drop will occur with a
30% glycol system and an additional 35% pressure drop will occur with a 50% glycol system. The maximum
amount of glycol used with the VSL II boiler must be limited to a concentration of 50%.

Slant/Fin VSL II Quick Start Guide 11
20˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater
Grundfos
Model
Taco pump
Model
90A 8 21.3 27.3 UPS43-100 (Speed 2) 0011
150A 13 13 19 UPS26-99 (Speed 3) 0011
199A 18 28 34 UPS26-150 (Speed 3) 2450
250A 22 NA NA NA NA
25˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater
Grundfos
Model
Taco pump
Model
90A 7 17 23 UPS26-99 (Speed 3) 0014
150A 11 11 17 UPS26-99 (Speed 3) 0012
199A 14 19 25 UPS26-150 (Speed 2) 0013
250A 18 28 34 UPS26-150 (Speed 2) 2450
30˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater
Grundfos
Model
Taco pump
Model
90A 5 9 15 UPS26-99 (Speed 1) 008
150A 9 7 13 UPS26-99 (Speed 2) 0010
199A 12 15 21 UPS26-99 (Speed 3) 0011
250A 15 22 28 UPS26-150 (Speed 3) 2450
30 Gallon Superstor Ultra Indirect Tank Pump Sizing

12 Slant/Fin VSL II Quick Start Guide
20˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater (7.9)
Grundfos
Model
Taco pump
Model
90A 8 21.3 29.2 UPS43-100 (Speed 3) 0011
150A 13 13 20.9 UPS26-99 (Speed 3) 0013
199A 18 28 35.9 UPS26-150 (Speed 3) 2400-50
250A 22 NA NA NA NA
25˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater (7.9)
Grundfos
Model
Taco pump
Model
90A 7 17 24.9 UPS26-99 (Speed 3) 0011
150A 11 11 18.9 UPS26-99 (Speed 3) 0011
199A 14 19 26.9 UPS26-150 (Speed 2) 2400-45
250A 18 28 35.9 UPS26-150 (Speed 2) 2400-50
30˚F rT System
Boiler
Model GPM Feet of Head
Feet of Head 30 Gallon
Indirect Water Heater (7.9)
Grundfos
Model
Taco pump
Model
90A 5 9 16.9 UPS26-99 (Speed 2) 0014
150A 9 7 14.9 UPS26-99 (Speed 2) 0014
199A 12 15 22.9 UPS26-99 (Speed 3) 0013
250A 15 22 29.9 UPS26-150 (Speed 3) 2400-45
40 and 60 Gallon Superstor Ultra Indirect Tank Pump Sizing

Slant/Fin VSL II Quick Start Guide 13
Gas input rate btuh
Static gas pressure in. W.C.
Dynamic gas pressure in. W.C.
Gas type
Central Heating supply temperature F
Central heating return temperature F
CO2 reading at high fire %
CO2 reading at low fire %
Ionization current μA
System water pressure psi
Has the system been properly flushed? Yes / No
If flushed what agent was used? Yes / No
Is there an inhibitor in the system? Yes / No
What inhibitor have been used?
Is there glycol in the system? Yes / No
What percentage of glcyol?
What brand and type of glycol?
What is the pH of the fluid in the system?
Has the boiler been programmed to match
the heating system it is paired with? Yes / No
Is the outdoor reset sensor installed? Yes / No
Is the boiler paired with an indirect tank? Yes / No
If paired with an indirect tank has a sensor
been installed and wired to the boiler control? Yes / No
Has the boiler been prgrammed for
DHW operation? Yes / No
Have all the venting joints been properly
sealed? Yes / No
Has a CO detector been installed? Yes / No
Has the piping system been tested for leaks? Yes / No
Commissioning Check List

14 Slant/Fin VSL II Quick Start Guide
Technical Data
Boiler MODEL 90A 130A 150A 199A 250A
Category of discharge chimney IV
Maximum Heat input Btu/hr 90,000 130,000 150,000 198,000 250,000
Minimum heat input Btu/hr 20,000 36,000 36,000 43,000 50,000
Turndown ratio 4.5 : 1 3.6 : 1 4.2 : 1 4.6 : 1 5 : 1
Number of burners 1
/.-,+*),(.'&,%$.'#(.",!.- ft3/hr 90 130 150 198 250
/.-,+*),(.'&,%,!.- ft3/hr 36 52 60 79.2 100
,,.,!.-,(&--#(&,%$.',., In.W.C. 3 / 13
Min / Max heating water temperature °F 68 / 180
Min / Max indirect water heater temperature °F 68 / 140
Min / Max water pressure  8 / 130 8 / 160 8 / 160 8 / 160 8 / 160
#,).'&(,+*) / 1.4 2 2 4 4
Content of water !." 1 1.5 1.5 2 2
#",*"'.!&,,(&#&& 120Vac / 60Hz
-*(&,&"&'(,*)&( W 60 75 80 130 250
(,'.&,,"#&,!.-,&-,.&'&(, inch 3
.,"&!',&'!,--'&,+#&,&.#-' ft 160
.,"&!',&'!,--'&,.(,'.& ft 160
,%.(*,**& ,)',.'#(.",!.-, ppm <150
,%.(*,**& ,)',,!.- ppm <250
$,%,,)',.'#(.",!.- ppm <30
,%.(*,*& ,*(,$.'#(.",!.-,.',!,(&  8.6 to 8.9
,%.(*,*& ,*(,$.'#(.",!.-,.',"*),(&  8.5 to 9
,%.(*,*& ,*(,,!.-,.',!,(&  9.6 to 9.8
,%.(*,*& ,*(,,!.-,.',"*),(&  9.5 to 11.5
,%!& ,*(,$.'#(.",!.-,.',!,(&  5.6 to 5.1
,%!& ,*(,$.'#(.",!.-,.',"*),(&  5.8 to 4.9
,%!& ,*(,,!.-,.',!,(&  6.3 to 6.0
,%!& ,*(,,!.-,.',"*),(&  6.4 to 3.4
Ionisation current uA (Micro Amps) 4 to 7
.#,+#&,!.-,'&&(.'#(& °F 203
.#,).'&(,*&-.'&,+*) / 0.013 0.019 0.022 0.029 0.036
&(.!&,.',*,*&-.'*  4
*"&(,)&!',%&',*,).'&( " 77 93 93 99 99

Slant/Fin VSL II Quick Start Guide 15

©2015 Slant/Fin Corp. • Publication VSLII-QSG • Printed in U.S.A. 915
U.S.A.
Slant/Fin Corporation • 100 Forest Drive
Greenvale, NY 11548 • 516-484-2600
www.slantfin.com
Canada
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Mississauga, Ontario L5T 2J3 • 905-677-8400
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