Bradford White Laars Pennant PNCH Series User manual

User's Manual Document 1374A
H2380000A
WARNING
If the information in this manual is not
followed exactly, a re or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the re department.
Installation and service must be performed
by a qualied installer, service agency, or gas
supplier.
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion
ou pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inammables dans
le voisinage de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur. Ne pas vous
servir des téléphones dansle bâtiment où vous
vous trouvez.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le sservice des incendies.
L’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualié ou
par le fournisseur de gaz.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in ue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty. For indoor installations, as an additional
measure of safety, Laars strongly recommends installation of suitable Carbon Monoxide detectors in the
vicinity of this appliance and in any adjacent occupied spaces.
User's Manual
for
PENNANT
includes LOW TEMP PENNANT
®
®
Hydronic Boiler
Model PNCH
Water Heater
Model PNCV
Sizes 500-2000
U.S. Reg. 2,765,423
with Laars Linc™

Page 2
LAARS Heating Systems
TABLE OF CONTENTS
SECTION 1 Caring For Your Pennant ....................... 3
1.A General Care ............................................ 3
1.B Annual Inspection of Flue and Vents ........ 3
1.C In the Event of a Power Failure ................ 3
1.D Full Service Every Three (3) Years ........... 3
SECTION 2 Touchscreen and System Ops ............... 4
2.A The Home Screen .................................... 4
2.A.1 Home Screen Status Window................... 4
2.A.2 Home Screen Active Icons ....................... 5
2.B Lock/Unlock Display Screen ..................... 6
2.C Keypad Operations ................................... 7
2.D Quick Start .............................................. 8
2.D.1 CH /DHW ................................................. 8
2.D.1.a CH1 /DHW11 ............................................ 8
2.D.1.b CH2/DHW2 2 ............................................ 8
2.D.2 DHW/DHW3 ............................................ 9
2.D.3 Outdoor Reset ......................................... 9
2.D.4 Warm Weather Shut Down ...................... 9
2.D.5 Anti-Short Cycle ..................................... 10
2.D.6 Time & Date ........................................... 10
SECTION 3 Electrical Connections ..........................11
3.A Installation Warnings ...............................11
3.B Line Voltage Connections ........................11
3.B.1 Main Power..............................................11
3.B.2 Pump Power ............................................11
3.B.3 Boiler/Heater Pump ................................11
3.B.4 Auxiliary Power Output ............................11
3.C Low Voltage Connections ....................... 12
3.C.1 Field Wiring - Inputs................................ 12
3.C.1.a Safety Interlocks ..................................... 12
3.C.1.b PNCH/PNCV Heat Demands ................. 12
3.C.1.c Field Inputs (Open/Closed)..................... 12
3.C.1.d Temperature Sensors ............................. 12
3.C.2 Field Wiring - Outputs ............................ 13
3.C.2.a Dry Contacts ........................................... 13
3.C.1.e Analog (BAS) Input ................................. 13
3.C.2.b Cascade RS485 ..................................... 14
3.C.2.c BAS RS485 ............................................ 14
3.C.2.d 24VAC .................................................... 14
3.D Cascade Wiring Connections ................. 15
SECTION 4 Burner Set Up ...................................... 15
4.A Set Up for 0 to 2500 Feet Altitude .......... 15
4.B Set Up for High Altitude
( >2500 Feet ) ......................................... 16

Page 3
Pennant (500-2000), User's Manual
SECTION 1 Caring For Your
Pennant
Your Pennant will require very little
Maintenance. However, as with any ne appliance
there are certain steps that should be taken to ensure
continuing optimum performance.
1.A General Care
Keep the area around the Pennant clean and
free from combustible materials, gasoline and other
ammable liquids and vapors.
The Pennant must be completely isolated and
protected from any source of corrosive chemical fumes
such as trichlorethylene, perchlorethylene, chlorine,
etc.
Keep grille openings on the boiler free for proper
ventilation of interior components.
Do not obstruct or block a free ow of air to the
boiler to ensure proper ventilation.
If desired, clean the jacket surfaces with a damp
cloth and mild detergent. Do not use ammable
cleaning materials.
If sidewall vented, keep the vent terminal clear
of obstructions — do not pile snow against the vent
terminal. Clean the air lter(s) often, and then develop
an appropriate maintenance schedule.
1.B Annual Inspection of Flue and Vents
Visually inspect the vent pipe once a year. Should
any deterioration exist, have the aected parts replaced
by a qualied service person.
1.C In the Event of a Power Failure
The Pennant can not be operated during an
electrical power outage. If there is an extended power
outage with danger from freezing, then the Pennant
(and all other water systems) should be drained
completely. When draining the boiler, turn o main
electrical disconnect switch. When placing back in
service, refer to start-up instructions in the Installation
and Operation Manual for lling and purging.
Draining and lling shall only be done by a qualied
service person.
1.D Full Service Every Three (3) Years
In addition to the annual visual inspections, a
qualied service agency should conduct a detailed
inspection of all ue product carrying areas of the
boiler and its venting system.
WARNING
Do not use this boiler if any part has been
under water. Immediately call a qualied
service technician to inspect the boiler and to
replace any part of the control system and any
gas control which has been under water.
WARNING
Should overheating occur or the gas supply
fail to shut o󰀨, do not turn o󰀨 or disconnect the
electrical supply to the pump. Instead, shut
o󰀨 the gas supply at a location external to the
boiler.
FOR SERVICE
Contact your installing contractor, gas utility,
Laars dealer, or call Laars for the nearest
authorized representative in your area.

Page 4
LAARS Heating Systems
SECTION 2 Touchscreen and System Operations
2.A The Home Screen
Figure 1. The Home Screen
Figure 2. The Status Display Area, dened.
Section 6.9 Status Window
Icon
Description
Setpoint
CSP:
CH1:
CH2:
DHW:
Heat Demand
Setpoints
NOTE: The heat
demand set point
will turn green in
color when active.
Pumps
Boiler:
System:
DHW:
Pump Status
(On/Off)
Boiler Status
B1: Running
B2: Running
Stage 1:
Stage 2:
Stage 3:
Stage 4:
Blower 1:
Blower 2:
OAT:
Status:
•Burner Bank 1
•Burner Bank 2
•Staging (on/off)
•Blower Speed
(high/low)
•OAT -Outdoor
Ambient
Temperature
(when
connected)
Inlet /Outlet
Temperature
System
Supply/Return
Temperature
(when connected)
DHW Temperature
(when connected)
Staging –Using the
stages available
and stages
running, the firing
rate is shown as a
flame and in %.
Inlet & Outlet Temperature.
System Supply /
Return Temperature
(when connected).
DHW
Temperature
(when connected).
Heat Demand Setpoints.
NOTE: The heat demand set point will
turn green in color when active
Pump Status.
2.A.1 Home Screen Status Window
The central area of the home screen displays the
current status information for the unit.
Heat Demand Setpoints.
Pump Status.
Boiler Status (Boiler Bank).
System Temp.
and DHW Temp (if installed)
Table 1. Stages per Model
Model Stages
Low Temp On/O
500 - 750 2
1000 3
1250 - 2000 4

Page 5
Pennant (500-2000), User's Manual
Name Icon Description
Security Displays the current lock status. Touch the lock icon to lock or unlock the
Touchscreen Display.
Quick Start
Provides quick touch access to the most commonly used parameters for easy
installation.
Congure Will take you to ALL of your congurations and parameters for a detailed setup of
the unit. This is the largest group of menu screens.
Service Allows the service technician to access the basic diagnostic and troubleshooting
information.
Messages Will show an 'Exclamation' when there is a message.
Clicking onto the Message icon will take you to the message itself.
The USB functionality will show the USB Icon at this location, if
being used.
Active
Demands
Will show icons that indicate the active parameters that are
currently in demand.
Navigation
Bar
The Navigation Bar is the constant indicator of where you are as you
navigate into and out of the touchscreens. See Screen 2 on page 7
Date &
Time For Display Only. To change date and time, go to the
Conguration menu.
Table 2. The Active Icons on the Home Screen, and what they do.
ERROR Codes also show in the Navigation Bar when there is one of several unit
errors or shut-downs that have occured.
2.A.2 Home Screen Active Icons