Laars PNCH, PNCV User Manual
User's Manual Document 1374
User's Manual for
™
PENNANT
includes
Hydronic Boiler
Model PNCH
Water Heater
Model PNCV
Sizes 500-2000
U.S. Reg. 2,765,423
'LOW TEMP PENNANT'
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied 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.
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 qualied installer, service agency, or gas
supplier.
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 inammables 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 qualié ou
par le fournisseur de gaz.
AVERTISSEMENT
H2380000-
Page 2
TABLE OF CONTENTS
LAARS Heating Systems
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
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.
Page 3
WARNING
Do not use this boiler if any part has been
under water. Immediately call a qualied
service technician to inspect the boiler and to
replace any part of the control system and any
gas control which has been under water.
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 affected parts replaced
by a qualied service person.
WARNING
Should overheating occur or the gas supply
fail to shut off, do not turn off or disconnect the
electrical supply to the pump. Instead, shut
off 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.
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 off 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 qualied
service person.
1.D Full Service Every Three (3) Years
In addition to the annual visual inspections, a
qualied service agency should conduct a detailed
inspection of all ue product carrying areas of the
boiler and its venting system.
Page 4
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:
Pennant Status:
• Burner Bank 1
• Burner Bank 2
• Staging (on/off)
• Blower Speed
(high/low)
• OAT - Outdoor
Ambient
Temperature
(when
connected)
SECTION 2 Touchscreen and System Operations
2.A The Home Screen
Figure 1. The Home Screen
LAARS Heating Systems
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)
Heat Demand Setpoints.
NOTE: The heat demand set point will
turn green in color when active
Model Stages
Low Temp On/Off
500 - 750 2
1000 3
1250 - 2000 4
Table 1. Stages per Model
Inlet & Outlet Temperature.
Figure 2. The Status Display Area, dened.
Pump Status.
System Supply /
Return Temperature
(when connected).
DHW
Temperature
(when connected).
Pennant (500-2000), User's Manual
2.A.2 Home Screen Active Icons
Name Icon Description
Page 5
Security
Quick Start
Congure
Service
Messages
Active
Demands
Navigation
Bar
Displays the current lock status. Touch the lock icon to lock or unlock the
Touchscreen Display.
Provides quick touch access to the most commonly used parameters for easy
installation.
Will take you to ALL of your congurations and parameters for a detailed setup of
the unit. This is the largest group of menu screens.
Allows the service technician to access the basic diagnostic and troubleshooting
information.
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.
Will show icons that indicate the active parameters that are
currently in demand.
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
ERROR Codes also show in the Navigation Bar when there is one of several unit
errors or shut-downs that have occured.
Date &
Time
Table 2. The Active Icons on the Home Screen, and what they do.
For Display Only. To change date and time, go to the
Conguration menu.
Loading...