Velocity PHANTOM II User manual

112419-01 - 10/23
Phantom II
WARNING
This boiler must only be installed, serviced, or repaired by a qualified installer, service agency or gas supplier.
Improper installation, adjustment, alteration, service or maintenance can cause severe personal injury,
death, or substantial property damage. For assistance or additional information, consult a qualified installer,
service agency or the gas supplier. Read these instructions and boiler IO&S manual carefully before making
adjustments.
!
Extended Features Instructions for
Manual Contents Page
1. Introduction .............................3
Overview ...............................3
Extended Functions .......................3
2. User Interface ...........................7
General Navigation........................7
Home Screen ............................8
3. Multiple Boiler Installations ...............10
Venting ................................10
Water Piping ............................11
Gas Piping .............................13
Field Wiring ............................14
Communication. . . . . . . . . . . . . . . . . . . . . . . . . .16
Setup Procedure .........................16
Sequencer Master Menu ..................17
Follower Menu ..........................18
4. Energy Management Interface.............20
Communication..........................20
Setup Procedure .........................21
Modbus List ............................22
5. Setup & Tuning ........................26
Parameter Adjustment ....................26
Quick Menu ............................27
Modulation Menu ........................29
System Setup Menu ......................31
Pump Menu.............................34
Manual Mode Menu ......................39
Central Heat 1 Menu. . . . . . . . . . . . . . . . . . . . . .40
Central Heat 2 Menu. . . . . . . . . . . . . . . . . . . . . .41
Outdoor Reset Central Heat 1 Menu .........42
Outdoor Reset Central Heat 2 Menu .........43
Domestic Hot Water Menu .................45
Limits Menu ............................46
Intent
The Extended Features Instruction Manual includes
Phantom II Boiler features and functions that are
available when using the PAT-Connect Bluetooth
Adaptor commissioning, diagnostic and service
tool. PAT-Connect consists of a Bluetooth Adaptor
and mobile device app (“app”). The app is a local
service tool with web portal data collection and live
streaming to enable remote support. Refer to PAT-
Connect Bluetooth Adaptor Instruction Manual for
more information.
VELOCITY LOGO CMYK COLORS

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Phantom II Extended Features
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The following terms are used throughout this manual to bring attention to the presence of hazards of various
risk levels, or to important information concerning product life.
DANGER
Indicates a hazardous situation that, if not
avoided, will result in death or serious injury.
CAUTION
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
injury.
WARNING
Indicates a hazardous situation that, if not
avoided, could result in death or serious injury.
! !
!NOTICE: Indicates special instructions on
installation, operation, or service which are
important but not related to personal injury
hazards.

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Overview
This manual is an extension of the Installation, Operating and Service Instructions for Phantom II Models
PHTM2136C, PHTM2136CB, PHTM2200C, PHTM2080H, PHTM2120H, PHTM2120HB, PHTM2150H, and
PHTM2180H. The Phantom II’s Boiler Control (control) contains features and capabilities which help improve heating
system operation and efficiency. Using the app allows the user to gain access to features that help to fine tune the
boiler installation. The following is an extended features overview.
NOTICE: FROST PROTECTION
The control helps provide freeze protection for
boiler water. Boiler flue gas condensate drain is
not protected from freezing. Frost protection only
powers boiler pump. Individual zones are not
protected. It is required that boiler be installed
in a location that is not exposed to freezing
temperatures. Outdoor air interlocks included
when outdoor air sensor is used.
1Introduction
Extended Functions
Modulation Menu
1. Low Fire Hold
To help increase boiler run time and decrease
unnecessary boiler cycling, control includes low
fire hold time. After ignition and flame stabilization
periods, firing rate is held (by default) at low fire.
This delay allows heat to travel out to and return
from system and provide temperature feedback
prior to control allowing firing rate modulation.
App allows the user to adjust CH1, CH2 and DHW
low fire hold time and rate percent.
System Setup Menu
2. Outdoor Temperature Source
Outdoor temperature sensor may be used for
Outdoor Air Reset, CH Frost Protection and
Warm Weather Shutdown functions. “Outdoor
Temperature Source” parameter sets source for
this temperature. Outdoor Sensor thermistor may
be connected directly to low voltage connection
board or outdoor temperature may be written
to control from an Energy Management System
(EMS) Modbus connection.
3. Central Heating System Frost Protection
When enabled, frost protection starts boiler and
boiler pump and fires boiler when low outside air
and low supply water temperatures are sensed.
See Table 1-1 ‘Frost Protection’ for conditions that
trigger this functionality. App allows user to adjust
outdoor air frost protection setpoint, adjust pump
overrun time and enable or disable central heat,
domestic hot water and sequencer frost protection
features.
Table 1-1: Frost Protection
Device Started Start
Temperatures
Stop
Temperatures
Boiler Pump
Outside Air < 0°F
(-18°C)
Supply Water <
45°F (7.2°C)
Outside Air >
4°F (-16°C)
Supply Water
> 50°F (10°C)
Boiler Supply Water <
38°F (3.3°C)
Supply Water
> 50°F (10°C)
4. Warm Weather Shutdown (WWSD)
Some boilers are used primarily for heating
buildings, and the boilers can be automatically
shutdown when the outdoor air temperature is
warm. When outside air temperature is above the
WWSD setpoint, this function will shut down the
boiler, boiler pump, and system pump.
5. Anti-Short Cycle Time
"Anti-Short Cycle Time" prevents excessive
cycling as a result of undersized or micro zoning
applications. This feature provides a minimum
delay time before the next burner cycle during a
continuous heating demand (Heat T’stat or Aux
T'stat continuously closed). If a heat demand
occurs and a boiler cycles off for any reason
the burner will be held off until “Anti-Short Cycle
Time” has elapsed. DHW Demand is serviced
immediately, without any delay.
Pump Menu
6. Pump Over Run Time
To dissipate heat into the hydronic system, it is
sometimes desirable to include pump over run
time. The app allows individual pump over run
times to be adjusted.
Manual Menu
7. Sequencer Manual Mode
When commissioning a multiple boiler system, it
is an advantage to have the ability to increase or
decrease the common modulation rate. This ability
helps demonstrate successful balancing and
proper individual boiler temperature response.
The app allows the multiple boiler system to be
manually or automatically modulated.

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1Introduction (continued)
Central Heat (CH) 1 and 2 Menus
8. Differences Above and Below
The boiler is started based on the demand
(Heat T’stat, Aux T'stat inputs or DHW demand),
measured supply sensor temperature, setpoint
and “difference below”. When water temperature
is lower than setpoint minus difference below
the boiler will start. Similarly, the control uses the
“difference above” to stop the boiler. When water
temperature is higher than setpoint plus difference
above the boiler will stop. These two settings allow
the user to adjust the boiler run time and cycling.
The app allows these items to be adjusted for
CH1, CH2 and heating boiler DHW demands.
Combi boilers DHW demands have the difference
above and below pre-set and are not adjustable.
9. CH Modulation Sensor
Heat demand may respond to the boiler’s supply
temperature sensor or header temperature
sensor. Sometimes it is advantageous to install
an optional header temperature sensor in the
hydronic system. Installing a sensor in a location
that senses blended water temperature allows the
boiler to deliver water to heating elements at a
desired temperature, independent of the amount
of supply water and return water blending that
takes place.
10. CH1 vs. CH2 Priority
When “CH1 vs. CH2 Priority” is set to “CH1<CH2”
Central Heat 2 (Auxiliary Heat) demand has
priority over Central Heat 1 demand. If both
demands are present the setpoint, difference
above, difference below and maximum modulation
rates will be Central Heat 2 rather than Central
Heat 1. When “CH1 vs. CH2 Priority” is set to
“CH1>CH2” Central Heat 1 has priority. Typically,
the higher temperature demand is given priority,
ensuring high enough temperature to each type of
zone.
11. Heat Response Speed
“Heat Response Speed” adjusts the temperature
controller Proportional, Integral and Derivative
(PID) values all at once. Higher values cause
a larger firing rate change for each degree
of temperature change. If set too high, the
temperature “overshoots” required setpoint and
may cause the boiler to cycle off unnecessarily.
Lower values cause a smaller firing rate change
for each degree of temperature change. If set too
low, the temperature response will be sluggish,
and temperature will wander away from setpoint.
Outdoor Reset CH1 and CH2
12. Outdoor Reset Enable
Outdoor Reset may be set to Sensorless Reset,
Outdoor Air Reset or be disabled. Sensorless
Reset adjusts the active setpoint based on total
boiler heat output per unit of time. Outdoor Air
Reset adjusts the active setpoint based on the
outdoor temperature. This method requires an
outdoor air sensor to be installed. When a heating
boiler only serves an indirect water heater the
reset feature may be disabled.
13. Boost Time
When Central Heat Setpoint is decreased by
Sensorless or Outdoor Air Reset features, the
Boost function may be enabled to increase the
setpoint when central heat demand is not satisfied
for longer than the Boost Time setpoint. The
Boost feature increases operating temperature
setpoint by 10°F (5.6°C) every 20 minutes (field
adjustable) the central heat demand is not
satisfied. This process will continue until heat
demand is satisfied (indoor air is at desired
temperature). Once the heat demand is satisfied,
the operating setpoint reverts to the value
determined by the Sensorless or Outdoor Air
Reset settings. If Boost Time is zero, then the
boost function is not used.
Multiple Boiler Lead Lag Sequencer Overview
The control includes a state-of-the-art Multiple
Boiler Lead Lag Sequencer (sequencer), for up to
eight (8) follower boilers, capable of auto rotation,
outdoor reset, and Boiler-to-Boiler communication
network. Boilers are joined to sequencer network by
connecting an RJ45 ethernet cable between boilers
and setting unique boiler addresses. The control
provides precise boiler coordination by sequencing
boilers based on both header water temperature and
boiler modulation rate. Sequencer features include:
A. Sequencer Master
A single control is selected to be the
Sequencer Master. The call for heat, outdoor
sensor, header sensors, and common pumps
are wired to the Sequencer Master “enabled”
control.
B. Unison Modulation
Boilers are modulated in “unison” (parallel)
modulation rate to ensure even heat
distribution.

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1Introduction (continued)
C. Condensing Boiler Optimization
The Sequencer Master limits firing rates
to a ‘Base Load Common Rate” to
ensure peak efficiency. Lower firing rates
boosts efficiency by helping increase the
amount of flue gas water vapor condensation.
The control maintains a “Base Load Common
Rate” until the last lag boiler is started. At this
point, the “Base Load Common Rate”
is released to allow boilers to modulated as
required to meet heat load.
D. Lead Rotation Time
One boiler is a “Lead” boiler and the
remaining networked boilers are “Lags”.
When demand is increasing, the Lead boiler
is the first to start and the lag boilers are
started in sequential order until demand is
satisfied. When demand is decreasing,
boilers are stopped in reverse order with the
Lead boiler stopped last. To equalize run time,
the sequencer automatically rotates Lead
boiler after 24 hours of run time.
E. Multiple Demands
The Sequencer Master responds to CH1,
CH2 (Auxiliary Heat), DHW, and frost
protection demands similar to a stand alone
boiler.
F. Shared or Isolated DHW Demand
When the Indirect Water Heater (IWH)
parameter is set to “Primary Piped”, the
Sequencer Master sequences all
required boilers to satisfy the DHW setpoint.
When “Boiler Piped” is selected only the
individual boiler, with the wired DHW demand
and pump, fires to satisfy the DHW setpoint.
G. Improved Availability
• If the Sequencer Master control
is powered down or disabled or if
communication is lost between
boilers, individual boilers may be
setup to automatically resume control
as a “stand alone” boiler.
• Follower Boiler Rate Adjustment: Each
follower boiler continues to monitor
supply, return and flue gas
temperatures and adjust firing rate
to help avoid individual boiler faults,
minimize boiler cycling, and provide
heat to the building efficiently.
• Follower Boiler Status Monitoring:
The Sequencer Master monitors
follower boiler lockout status and
automatically skips over disabled
boilers when starting a new follower
boiler.
• All boilers are stopped without delay if
the Call for Heat input is removed or
if the header temperature is higher
than 195°F (90.6°C) (field adjustable).
Sequencer Master Menu
14. Stop All Boilers
When Header Temperature exceeds “Stop All
Boilers” setpoint all networked boilers are stopped
at the same time without any stop boiler time
delays. This setpoint allows the sequencer to
respond to rapid load decreases.
15. Sequencer Response Speed
“Sequencer Response Speed” adjusts the
sequencer temperature controller Proportional,
Integral and Derivative (PID) values all at once.
16. Boiler Start and Stop Delays
When header temperature is below the setpoint
minus “Add Stage Error Threshold” and the
Sequencer Master firing rate is at maximum for
longer than “Boiler Start Delay” seconds the
Sequencer Master starts the next boiler. Longer
time delay will prevent nuisance starts due to
short temperature swings. Boiler Stop Delay is
the boiler time delay after header temperature
has risen above the setpoint plus “Drop Stage
Error Threshold”. Longer time delay will prevent
nuisance stops due to short temperature swings.
17. Base Load Common Rate
To increase efficiency, boilers are kept at or below
‘Base Load Common Rate’ until all boilers in
sequence have started. After the last available
boiler has started, modulation rate is no longer
limited to ‘Base Load Common Rate’ setting.

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18. Add and Drop Stage Error Threshold
The follower boilers are started based on demand
(CH1, CH2 or DHW demand), measured header
sensor temperature, setpoint, “Add Stage Error
Threshold” and boiler start delay. Larger “Add
Stage Error Threshold” will cause boiler to wait
for colder water before starting. Similarly, control
uses “Drop Stage Error Threshold” to stop boiler.
Larger “Drop Stage Error Threshold” will cause
boiler to continue firing until a higher water
temperature is reached. These two settings allow
the user to adjust the follower boiler run time and
cycling.
19. Lead Rotation Time
“Lead rotation time” is the amount of boiler run
time each boiler will spend as "Lead" boiler before
switching to the next boiler in the network.
20. Demand To Firing Delay
“Demand to Firing Delay” specifies the length
of time the Sequencer Master waits for the main
fuel valve to be energized after a boiler start
command. If “Demand to Firing Delay” time is
exceeded before main fuel valve is open the next
boiler is started without further delay.
21. Indirect Water Heater
“Indirect Water Heater” is set to match the indirect
water heater piping location. When “Boiler Piped”
is selected, the sequencer responds to an
Isolated DHW demand that has an indirect water
heater piped to an individual boiler. The individual
boiler goes on leave, from the Sequencer Master
(acting as a stand-alone boiler) and goes to DHW
Service. When “Primary Piped” is selected, the
indirect water heater is piped to common piping,
Sequencer Master responds to the DHW call
for heat and setpoint is greater of DHW or CH
regardless of priority. This allows one or more
boilers to provide heat to the IWH.
Energy Management System (EMS) Overview
The control accepts 4-20mADC, 0-10Vdc, or Modbus
interface with EMS systems. Both remote setpoint
and firing rate inputs are accepted. The control has
multiple, independent RS485 Modbus interface
networks. The RS485 Modbus interface remains
available for EMS interface even when also using the
1Introduction (continued)
boiler-to-boiler communication network.
Energy Management Menu
22. MB2 Monitoring Modbus Address
“MB2 Zone Panel/Monitoring Modbus address”
sets the Modbus bus port 2 address. This port
may be used for the zone panel or remote system
monitoring connection.
23. EMS Time Out Enable
When "EMS Time Out Enable" is enabled, control
switches to local mode if the EMS fails to write
value every 30 seconds. When disabled EMS only
needs to write a valid number after power up.
24. CH Modulation Rate Source
Boiler can modulate firing rate based on local or
remote (wired or Modbus) signals. Modulation
begins after the start sequence finishes and boiler
is released to modulate.
25. CH Setpoint Source
Boiler setpoint may be based on local (user
entered value or outdoor reset) or remote (wired
or Modbus) signals.
Limits Menu
26. Preferred outlet/flow high limit
“Preferred outlet/flow high limit” is a field
adjustable supply temperature High Limit. This
adjustment only allows user to lower the High
Limit below the maximum High Limit in the control.
This feature may be used to test the supply
temperature high limit control feature. By setting
Preferred High Limit below the normal operating
range the High Limit may be easily tested. When
High Limit is reached the boiler manual reset
lockout is initiated.
27. Preferred stack/flue high limit
“Preferred stack/flue high limit” is a field
adjustable flue temperature High Limit. This
adjustment only allows user to lower the High
Limit below the maximum High Limit in the
control. This feature may be used to test the Flue
Temperature High Limit control feature. By setting
Preferred Flue Temperature High Limit below the
normal operating range the High Limit may be
easily tested.

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2User Interface
General Navigation
Figure 2-1: Navigation
The Menu buttons, located at the bottom of the
screen, provides access to all display functions. The
following user interface areas are accessed from
Menu buttons:
HOME
The HOME screen provides an overview of the boiler,
control, and any networked boiler operation.
MENU
The MENU screen provides boiler registration, Start-
Up Wizard, Troubleshooting Wizard, Service Wizard
and remote support features:
• Boiler Registration: Initiate a boiler registration
with convenience of boiler model, location and
contractor information already filled in.
• Wizards: Save time by organized guided start-
up, troubleshooting and service actions and help
prevent call back by ensuring nothing is missed.
• Service Report, Archives and Site photos:
Document your installation on the smart
phone, store data on a web portal or allow
information to be emailed. These features allow
the user to provide information to contractors,
representatives, or manufacturer for efficient
remote support.
• Manuals: Boiler IO&S, user’s manual, quick start
guide, and specification are always available.
• Settings: Bluetooth Adaptor, boiler firmware or
default parameters may be updated.
ADJUST
Each adjustable parameter is presented for
adjustment with parameter explanation and adjustable
range.
TROUBLE
The TROUBLE screen collects both live data and the
history of how the boiler has operated and provides
tools to review and improve system operation.
• Active Alarms are presented with possible causes
and corrective actions. If necessary, pdfs are
included to help resolve problems.
• Lockout History – provides data on up to eight (8)
hold or Lockout errors.
• Data logging – Up to eleven (11) data points may
be selected, viewed on screen, saved to smart
phone or emailed.
• Cycle & Run Time History – collects boiler and
pump cycles and hours of operation. All cycles
and run hours, other than the controller quantities,
may be reset to aid in identifying improvements
made.

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2User Interface (continued)
Home Screen
Home screen is the primary boiler monitoring screen. The user may gain boiler system operational condition by
simply pressing “Main Data”, “Controller Status”, “Input/Output Status” or “Sequencer Status”.
Figure 2-2: Home Screen
Background dark when Central Heat demand is present.
Background dark when DHW demand is present.
Visible when burner is firing. Icon adjacent to active
priority.
Comfort
Combi Boilers Only.
Visible when Recirculation (Comfort) Mode is active.
(Visible after successful calibration.)
Visible when CH setpoint reset is enabled.
Table 2-3: Display Descriptions

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2User Interface (continued)
Sequencer Status
The Home Screen provides connected boiler status useful for initial connection status, load balancing and general
monitoring.
Figure 2-4: Home Screen Boiler Status Screen

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3Multiple Boiler Installations
Venting
WARNING
Asphyxiation Hazard.
• Vent and air pipe installations shall be in
accordance with instructions outlined in boiler
IO&S.
• No common venting (vent or air piping) is
permitted.
• Failure to comply with any of the above
requirements could result in severe personal
injury, death or substantial property damage.
1. Multiple boiler vent and air piping terminations are
shown in Figure 3-1.
2. In addition to instructions outlined in boiler IO&S,
consider the following guidelines when selecting
terminal location.
A. For horizontal sidewall terminations, follow
instructions outlined in boiler IO&S for
individual boilers. When selecting termination
location for next boiler, maintain minimum 12
in. (305 mm) horizontal distance between
adjacent boiler termination. See Figure 3-1 for
details.
!
NOTICE: Installing multiple individual boiler
vent terminations too close together may result in
flue gas condensation on building surfaces and
potential frost damage. To avoid/minimize frost
damage, extend distance from building surfaces
to vent termination end and increase horizontal
distance between adjacent vent terminations.
B. For vertical roof terminations, follow
instructions outlined in boiler IO&S
for individual boilers. When selecting
termination location for next boiler, maintain
minimum 12 in. (305 mm) horizontal distance
between adjacent boiler termination. See
Figure 3-1 for details.
C. Multiple individual boiler vent and air pipes
may be piped through common conduit or
chase so one (wall or roof) penetration may
be made.
Figure 3-1: Multiple Boiler Terminations
Grade or
snow line
From boiler
vent connection
To boiler
air connection
12" (305mm) Min.
12" (305mm) Min.
12" (305mm) Min12" (305mm) Min
12" (305mm) Min.
Roof of
snow line
From boiler
vent connection
To boiler
air connection
10' (3.1m)
24" (610mm) Min.
12" (305mm) Min.
12" (305mm) Min.
7' (2.1m) Max.
0"
Min.
Grade or
snow line
From boiler
vent connection
To boiler
air connection
12" (305mm) Min.
12" (305mm) Min.
12" (305mm) Min12" (305mm) Min
12" (305mm) Min.
Roof of
snow line
From boiler
vent connection
To boiler
air connection
10' (3.1m)
24" (610mm) Min.
12" (305mm) Min.
12" (305mm) Min.
7' (2.1m) Max.
0"
Min.

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3Multiple Boiler Installations (continued)
Water Piping
WARNING
Burn Hazard. Property Damage.
• Heating system piping installation shall be in
accordance with instructions outlined in boiler
IO&S.
• See boiler IO&S for standard piping
components (including required components)
for each individual boiler.
• Failure to comply with any of the above
requirements could result in severe personal
injury, death or substantial property damage.
!
1. Multiple boiler heating systems piping is shown in
Figure 3-2.
2. Follow instructions outlined in boiler IO&S for
installation of near boiler piping supplied with
boiler.

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3Multiple Boiler Installations (continued)
Figure 3-2: Multiple Boiler Water Piping w/Primary Piped Indirect Water Heater
(Page 1 of 2)
Purge Valve*
Flow Check Valve*
From Previous
Page
Flow Check Valve*
*Typical on all boiler loops
Indirect Domestic
Water Heater (IWH)
Indirect
Return
Indirect
Supply
Flow Check Valve
Indirect Circulator
Full Port
Isolation
Valve
To
System
From
System
Expansion Tank
Fill
Valve
Backflow
Preventer
Cold Water Line
Air Separator
Header
Temperature
Sensor
(when used)
Purge Valve
Purge
Valve Dirt & Magnetic Filter
(highly recommended)
A. At least eight pipe diameters upstream of first tee
B. No further apart than 12 inches (305mm) or four pipe diameters, whichever is smaller
B
To Following
Page
A
Hydraulic separator
may be subsituted
for tees
Close nipple (locate header
sensor as close as possible
to downstream tee)
Sensor

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3Multiple Boiler Installations (continued)
Figure 3-3: Multiple Boiler Water Piping w/Primary Piped Indirect Water Heater (Page 2 of 2)
Purge Valve*
Flow Check Valve*
From Previous
Page
Flow Check Valve*
*Typical on all boiler loops
Indirect Domestic
Water Heater (IWH)
Indirect
Return
Indirect
Supply
Flow Check Valve
Indirect Circulator
Full Port
Isolation
Valve
To
System
From
System
Expansion Tank
Fill
Valve
Backflow
Preventer
Cold Water Line
Air Separator
Header
Temperature
Sensor
(when used)
Purge Valve
Purge
Valve Dirt & Magnetic Filter
(highly recommended)
A. At least eight pipe diameters upstream of first tee
B. No further apart than 12 inches (305mm) or four pipe diameters, whichever is smaller
B
To Following
Page
A
Hydraulic separator
may be subsituted
for tees
Close nipple (locate header
sensor as close as possible
to downstream tee)
CAUTION
Burn Hazard. Property Damage. Under some conditions this boiler can deliver water to heating system that is
significantly higher than boiler setpoint. Where such overheat could cause personal injury or property damage
(e.g. low temperature radiant floor zones), protect system from excessive temperatures using tempering valves
or other means.
!
NOTICE: Installer is responsible for piping configurations to provide proper flow rates and meet local codes.
NOTICE: Primary-secondary piping is required.

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3Multiple Boiler Installations (continued)
Gas Piping
WARNING
Explosion Hazard.
• Gas piping installation shall be in accordance
with instructions outlined in boiler IO&S.
• Failure to comply with any of the above
requirements could result in severe personal
injury, death or substantial property damage.
1. See boiler IO&S for standard piping components
(including components supplied with boiler) for
each individual boiler.
2. Additional gas pressure regulator(s) may
be required to properly regulate inlet gas
pressure at smallest individual boiler.
!

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Figure 3-6: Multiple Boiler Wiring Diagram
3Multiple Boiler Installations (continued)
Field Wiring
NOTICE: Heating Availability 1. Networked Boilers Heat T’stats: Sequencer Master is lost or unavailable when powered down or ethernet cable is disconnected. When a Sequencer Master is lost the follower boilers
revert to local, stand-alone operation, and monitors their own Heat T’stat and supply sensor. Follower boilers need a closed Heat T’stat to have a “call for heat”. To ensure follower boiler continued operation, jumper the Heat T’stats on each follower boiler. While Sequencer Master boiler is powered and connected to the boiler-to-boiler network, follower boiler Heat T’stat jumpers are ignored and follower boiler operation is directed by the Sequencer Master. Sequencer Master boiler with lockout condition will not interrupt Sequencer Master directing follower boiler normal operation.
2. System Pump Operation (when using system pump and zone valves) When the follower boiler Heat T’stats are jumpered and the system pump is wired to a zone panel or external relay the boilers will supply heat even
after loss of the Sequencer Master. To continue suppling heat to the building in the event the Sequencer Master is lost, it is important to consider system pump wiring. When the system pump is wired to the Sequencer Master and the Sequence Master is powered down the system pump will shut off. System pump operation can be ensured by wiring to zone panel, or external relay (for example SR501). Wire relay with input from thermostat and contacts to system pump and master boiler.

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Figure 3-8: Alternate “Strap-On”Type Header
Sensor Installation Detail
Header Sensor (P/N 101935-01 or 103104-01)
A header sensor must be installed and wired to the
Sequencer Master “enabled” control. The header
sensor is installed on the common system piping
and provides blended temperature information to the
Sequencer Master. Refer to piping diagram Figure
3-2 for installation location and Figure 3-7 or 3-8 for
installation detail.
3Multiple Boiler Installations (continued)
Field Wiring (continued)
Figure 3-7: Recommended "Immersion" Type
Header Sensor installation Detail
NOTICE: The “Strap-On” type sensor must be
mounted to the top side of a horizontal section of
pipe as indicated in Figure 3-2.
Ethernet Cables
Ethernet cables are used to connect the boiler
network together. These are standard “straight
through” cables that can be purchased at electrical
distributors. Connect ethernet cables to rear of
control at X8-1 or X8-2 ports. Up to 8 controls can be
connected in sequence through these ports.
Figure 3-9: Boiler-to-Boiler Communication
Network Connections
X4
X5
X6 BCC
X2
Fuses
X1
X3
XB-2 XB-1
RJ45 Connections (2)

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3Multiple Boiler Installations (continued)
Communication
Boiler-to-Boiler
communication network
allows the control’s
Internal sequencer to
communicate boiler
information, including
modulation rate and on/
off commands, using
standard Ethernet cables.
Figure 3-10: Boiler-to-Boiler Communication Network
Table 3-11: Sequence Setup Procedure
Step Description Comments
1Install and wire the
Header Sensor
Wire the Header Sensor to low voltage terminal strip terminals "Header Sensor".
NOTICE: This step cannot be skipped. The Sequencer Master cannot be
“Enabled” unless a Header Sensor is Installed.
2
Install Ethernet
Cables between
Boilers
Use standard “straight through” Ethernet type cables to make connections between
boilers. Ethernet cables are “plugged in” to connection X8-1 or X8-2 on rear of
control. When multiple Phantom II* boilers are also connected an RJ45 splitter may
be used to connect the boilers. Refer to Figure 3-10.
3Apply Power to All
Boilers
4Set Unique Boiler
Addresses
Assign all boilers a unique Boiler Address using any number from 1 through 8.
(Found in App: Adjust Menu/Sequencer Master/Boiler address) Boiler address must
be set at each boiler's local display or with app connected directly to boiler.
WARNING
Burn Hazard. Property Damage. When two or more boiler’s addresses are
the same, undesirable simultaneous operation occurs. If Multiple boilers start
simultaneously these boilers could deliver water to heating system that is
higher than boiler setpoint. Where such overheat could cause personal injury or
property damage (e.g. low temperature radiant floor zones), protect system from
excessive temperatures using tempering valves or other means.
5Enable 1 Boiler
Master
Enable only one control’s Sequencer Master.
(Found in App: Adjust Menu/Sequencer Master/Sequencer Master Enable)
6Confirm
Communication
Use app to connect to the Sequencer Master Enabled boiler. From app Home
Screen, select “Sequencer Status” menu. All boilers should be listed. If a boiler is
not shown, check Ethernet cable connections and confirm all boilers have unique
addresses.
* Phantom II boiler to boiler network is compatible with Phantom, Phantom Combi, Phantom-X, Raptor, Raptor Combi
Shadow.
!
NOTICE: The Phantom II
boiler must be the enabled
Sequencer Master.
Setup Procedure

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Select the “Sequence Master” menu button to access the following parameters:
Sequence Master
Table 3-12: Sequence Master Menu
Default Range/Choices Parameter and Description
No
Sequencer
Master
Sequencer
Master,
No Sequencer
Master
Sequencer Master Enable
Used to "turn on" Boiler-to-Boiler communication network.
Sequencer Master: Sequencer Master is Enabled.
No Sequencer Master Sequencer Master is Disabled
NOTICE: Enable Only one Sequencer Master in the boiler-to-boiler network.
Header sensor must be installed and valid to enable the Sequencer Master.
0 1 to 8
Boiler Address
Each boiler must be given a unique address, address determines boiler start
order.
Disabled Disabled,
Outdoor Air
Sequencer Reset Enable
If an outdoor sensor is installed and sequencer Outdoor Reset is Enabled, boiler
will automatically adjust heating zone setpoint temperature based on outdoor
reset curve.
Disabled: Disable, do not calculate setpoint based on outdoor
temperature.
Outdoor Air:
Calculate temperature setpoint based on outdoor temperature
using a reset curve defined by Low Outdoor Temp, High
Outdoor Temp, Low Boiler Temp and CH Setpoint and Boost
Time parameters
NOTICE: Sensorless reset is not available for use with Sequencer Master.
195ºF CH1 Setpoint
through 195ºF
Stop All Boilers
When header temperature is higher than Stop All Boilers setpoint all networked
boilers are stopped at once without any stop boiler time delays. This setpoint
allows the Sequencer to respond to rapid load decreases.
2 1 to 3
Sequencer Response Speed
“Sequencer Response Speed” adjusts the temperature controller Proportional,
Integral and Derivative (“Sequencer P Gain”, “Sequencer I Gain” and
“Sequencer D Gain”) values all at once. Higher values cause a larger firing
rate change for each degree of temperature change. If set too high, the
temperature “overshoots” required setpoint and may cause the boiler to cycle off
unnecessarily. Lower values cause a smaller firing rate change for each degree
of temperature change. If set too low, the temperature response will be sluggish
and temperature will wander away from setpoint.
120 seconds 2 to 1,200
seconds
Boiler Start Delay
When header temperature is below the setpoint minus “Add Stage Error
Threshold” and the Sequencer Master firing rate is at maximum for longer than
“Boiler Start Delay” seconds the Sequencer Master starts the next boiler. Longer
time delay will prevent nuisance starts due to short temperature swings.
40% 20 to 100%
Base load common rate
To maximize condensing boiler efficiency, the firing rate is limited to an adjustable
value. Boilers are kept at or below this firing rate until last available boiler has
started, then the modulation rate limit is released up to 100%.
60 seconds 0 to 900
seconds
Boiler Stop Delay
When header temperature is above the setpoint plus “Drop Stage Error
Threshold” and the Sequencer Master firing rate is at minimum for longer than
“Boiler Stop Delay” seconds the Sequencer Master stops a boiler. Longer time
delay will prevent nuisance stops due to short temperature swings.
3Multiple Boiler Installations (continued)

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Sequence Master (continued)
Table 3-12: Sequence Master Menu (continued)
Default Range/Choices Parameter and Description
5ºF 2 to 30ºF
Add Stage Error Threshold
The “Add Stage Error Threshold” parameter is subtracted from the setpoint
temperature to determine the temperature at which a follower boiler should be
turned on.
7ºF 2 to 30ºF
Drop Stage Error Threshold
The “Drop Stage Error Threshold” parameter is added to the setpoint temperature
to determine the temperature at which a follower boiler should be turned off.
24 hours 0 – 720 hours
Lead Rotation Time
“Lead rotation time” is the amount of "Boiler Run Time" each boiler will spend as
"Lead" boiler before switching to the next boiler in the network. This ensures each
boiler in network has similar Cycles and Run Hours.
240 seconds 20 to 400
seconds
Demand to Firing Delay
The “Demand to Firing Delay” specifies the length of time the Sequencer Master
waits for the main fuel valve to be energized after a boiler start command. If the
“Demand to Firing Delay” time is exceeded before the main fuel valve is open the
next boiler is started without further delay.
Boiler Piped
Boiler Piped,
Primary Piped
Indirect Water Heater
“Indirect Water Heater” (IWH) is set to match the indirect water heater piping
location.
Boiler Piped:
Sequencer to respond to an Isolated DHW demand that has an
indirect water heater piped to an individual boiler. The individual
boiler goes on “Leave” from the Sequencer Master and goes to
single boiler DHW Service.
Primary Piped:
The indirect water heater is piped to common piping. The
Sequencer Master responds to the DHW Call for Heat. This
allows one or more boilers to provide heat to the IWH.
3Multiple Boiler Installations (continued)
Select the “Sequence Follower” menu button to access the following parameters:
Sequencer Follower Menu
Table 3-13: Sequence Follower Menu
Default Range/Choices Parameter and Description
0 1 to 8
Boiler Address
Each boiler must be given a unique address, address determines boiler start
order.

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Table 4-2: Energy Management Interface Specifications
RJ45 Modbus
Signal
Ethernet
Type B Color
Ethernet
Type A Color Description
1 D+(A) Orange w/
white stripe
Green w/
white stripe
Modbus 2 (MB2) Energy Management Interface2 GND (C) Orange Green
3 D-(B) Green w/
white stripe
Orange w/
white stripe
4 -- Blue Blue Not used.
5 -- Blue w/
white stripe
Blue w/ white
stripe Not used.
6 -- Green Orange Not used.
7 D-(B) Brown w/
white stripe
Brown w/
white stripe
Modbus 3 (MB3)
Boiler-To-Boiler Communication Network
NOTICE: Do not connect EMS system to pin 7 or 8.
8 D+(A) Brown Brown
NOTICE: If the first and second pin are orange, the cable is 568B. If the first and second pins are green, the cable
is 568A.
Table 4-1: RJ45 Port Pin Identification
4Energy Management Interface
Communication
The control system has a full featured ability to interface with an Energy Management System (EMS). The control
system allows remote control and monitoring via RS485 Modbus or through direct wiring. The EMS connection is
separate from the Boiler-to-Boiler communication network and may be used simultaneously.
Modbus communication connects to the same RJ45 port that is used by the Boiler-to-Boiler communication network.
Connect one end of the ethernet cable to the control and cut off the other end of the cable to access the individual
conductors. The control is a 3 wire Modbus communication, labeled as Modbus 2 (MB2) in Table 4-1 below:
Feature Description
Com Port Modbus 2
Type RS485
Registers Holding Registers (HR), U16, 40,000 numbers, U32 when noted
Bit Transfer Rate 38400 bps
Parity None
Modbus Network RTU Mode
Function Codes 03, 06, 16, and 17
Modbus Command Time Out 30 seconds, selectable, see "EMS Time Out Enable" parameter.
Modbus Address Field adjustment from 1 to 255 (parameter adjustable)
Data 16 bit holding registers, 32 bit uses two consecutive 16 bit holding registers