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PEERLESS PureFire PF-110 - User Manual

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PUREFIRE
®
REV
2
Boilers
PF-50 PF-80 PF-110 PF-140 PF-210 PF-399
Gas
Installation,
Operation &
Maintenance
Manual
As an ENERGY STAR
®
Partner, PB Heat, LLC has determined that
this product meets the ENERGY STAR guidelines for energy efficiency.
®

Table of Contents

Questions and Answers

  • E
    Edwin GoodSep 18, 2025
    How to troubleshoot high stack temperature in my PEERLESS Boiler?
    • S
      Susan GregorySep 18, 2025
      If the flue pipe is hot, check the flue temperature and compare it to the values shown in Table 8.5. Also, check for proper gas input and combustion readings, and inspect for a dirty heat exchanger. If the flue pipe is not hot, check the flue sensor and harness.
  • E
    Ebony MitchellAug 25, 2025
    How do I fix a blocked condensate drain on my PEERLESS Boiler?
    • F
      Frank WaltersAug 25, 2025
      If your PEERLESS Boiler shows a 'BLOCKED CONDENSATE DRAIN' error, check the condensate tanks, hoses, condensate switch, and harness.
  • J
    James BrownAug 25, 2025
    What to check if my PEERLESS PureFire PF-110 shows a low water error?
    • R
      raymond17Aug 26, 2025
      Check the boiler water level, low water cut-off, and harness. If a LWCO is not used, a jumper should be placed between terminals #9 and #10, LWCO Contact.
  • C
    Christopher JonesAug 26, 2025
    What to do if there is a false flame detected before ignition in my PEERLESS PureFire PF-110?
    • C
      Christopher BarnettAug 27, 2025
      If you're experiencing a false flame detected before ignition with your PEERLESS Boiler, check the flame sensor and igniter to ensure there are no shorts to ground.
  • D
    Deanna WarrenSep 23, 2025
    Why is the return temperature higher than the supply temperature in my PEERLESS PureFire PF-110?
    • S
      Stephanie TylerSep 23, 2025
      Check the system piping to ensure that the water is entering the return connection and exiting the supply connection.
  • M
    Mr. Jason FergusonSep 23, 2025
    What to do if my PEERLESS PureFire PF-110 has a blocked condensate drain?
    • K
      Keith NewtonSep 23, 2025
      Check the condensate tanks, hoses, condensate switch, and harness.
  • J
    james06Sep 10, 2025
    How to troubleshoot stack sensor short error on PEERLESS Boiler?
    • T
      Terry BlakeSep 10, 2025
      If your PEERLESS Boiler displays the error 'STACK SENSOR SHORT', check the harness and sensor.
  • K
    Kenneth DyerSep 12, 2025
    What to do if PEERLESS Boiler showing low water?
    • D
      Danielle GentrySep 12, 2025
      If your PEERLESS Boiler displays 'LOW WATER', check the boiler water level, low water cut-off, and harness. If a LWCO is not used, a jumper should be placed between terminals #9 and #10, LWCO Contact.
  • B
    Billy BriggsSep 4, 2025
    How to troubleshoot high return temp on PEERLESS PureFire PF-110 Boiler?
    • B
      Brandon WarnerSep 4, 2025
      If your PEERLESS Boiler displays 'HIGH RETURN TEMP', check for reversed supply and return piping or a pump installed backwards.
  • M
    Mary FergusonSep 1, 2025
    Why is the return higher than supply on my PEERLESS Boiler?
    • M
      Michael RodriguezSep 2, 2025
      If you see 'RETURN HIGHER THAN SUPPLY' on your PEERLESS Boiler, check the system piping to ensure water enters the return connection and exits the supply connection correctly. Also, compare the supply thermistor reading to the temperature gauge; if they don’t match, replace the supply thermistor.

Summary

USING THIS MANUAL

A. INSTALLATION SEQUENCE

Follow instructions in order for safety & minimal interference.

B. SPECIAL ATTENTION BOXES

Defines DANGER, WARNING, CAUTION, NOTICE boxes used throughout the manual.

1. PREINSTALLATION

A. GENERAL

Boiler assembly, inspection, storage, and reading instructions before installation.

B. CODES & REGULATIONS

Compliance with state/local codes and ASME/ANSI standards for boiler installation.

C. ACCESSIBILITY CLEARANCES

Specifies minimum clearances for boiler installation and importance of no carpeting.

D. COMBUSTION AND VENTILATION AIR

Requirements for combustion and ventilation air, including methods for calculating volume.

E. PLANNING THE LAYOUTS

Prepare sketches for layout to minimize interferences with existing equipment.

2. BOILER SET-UP

A. GENERAL

Boiler installation area requirements, support for piping, and leveling.

B. WALL MOUNTING

Instructions for installing the boiler using the wall mounting bracket kit.

C. FLOOR STANDING INSTALLATION

Guidance for floor standing installations, including leveling feet.

3. VENTING & AIR INLET PIPING

A. GENERAL

Install venting system per codes and standards; avoid contaminated air sources.

B. APPROVED MATERIALS

Lists approved materials for vent pipe and fittings; use only specified components.

C. EXHAUST VENT;AIR INTAKE PIPE LOCATION

Guidance on locating vent/air intake pipes, including clearance and condensate plume.

D. EXHAUST VENT;AIR INTAKE PIPE SIZING

Tables and guidance for sizing exhaust vent and air intake pipes based on boiler model and fittings.

E. EXHAUST VENT;AIR INTAKE INSTALLATION

Connect exhaust and air intake pipes, seal joints, ensure proper slope and support.

F. EXHAUST TAPPING FOR VENT SAMPLE

Instructions for drilling a hole in the vent pipe for combustion analysis.

G. BOILER REMOVAL FROM COMMON VENTING SYSTEM

Steps for removing an existing boiler from a common venting system.

4. WATER PIPING AND CONTROLS

A. GENERAL

System requirements, cleaning, protection from water, and water quality for hydronic systems.

B. OPERATING PARAMETERS

Boiler operation in closed-loop systems, minimum pressure, and flow rates.

C. SYSTEM COMPONENTS

Description of key system components like pressure/temperature gauges, air eliminators, and expansion tanks.

D. SYSTEM PIPING

Diagrams and explanations for single/multiple boiler piping configurations.

E. FREEZE PROTECTION

Guidance on using glycol solutions for freeze protection, including mixing and water quality.

F. SPECIAL APPLICATIONS

System piping for chiller operation and heating coils in forced air systems.

5. FUEL PIPING

A. GENERAL

Fuel piping to comply with codes, supply gas for all appliances, and natural gas/propane specs.

B. FUEL LINE SIZING

Determining required gas flow rate and pipe capacity based on pressure drop.

C. GAS SUPPLY PIPING - INSTALLATION

Installing piping, sediment trap, and ensuring access.

D. GAS SUPPLY PIPING - OPERATION

Purging gas lines, checking supply pressure, and handling gas valve.

E. MAIN GAS VALVE - OPERATION

Adjusting gas valve for CO2 settings and emissions.

6. CONDENSATE DRAIN PIPING

A. GENERAL

Disposal of condensate per local codes and instructions for proper operation.

B. CONDENSATE SYSTEM

Design for preventing backup, trapping condensate, and neutralizing acidity.

C. CONDENSATE DRAIN PIPE MATERIAL

Approved materials for condensate piping; avoid steel/brass due to acidic condensate.

D. CONDENSATE DRAIN PIPE SIZING

Sizing requirements for condensate connection and tubing.

E. CONDENSATE DRAIN PIPE INSTALLATION

Connecting drain piping, ensuring slope, and using condensate pumps.

7. ELECTRICAL CONNECTIONS

A. GENERAL

Wiring to comply with local codes and National Electrical Code.

B. CUSTOMER CONNECTIONS

Wiring diagrams for low voltage and line voltage connections for different boiler models.

C. ZONE CIRCULATOR WIRING

Typical wiring diagram for a circulator zone relay.

D. INTERNAL WIRING

Schematic and list of internal wiring components for boiler control.

8. BOILER CONTROL: INTERNAL WIRING & OPERATION

A. CONTROL OVERVIEW

Boiler control functions, safety features, and modes for heating and hot water.

B. IGNITION SEQUENCE

Graphical representation and detailed steps of the boiler's ignition sequence.

C. BOILER CONTROL

Control settings for installation location, vent material, freeze protection, and safety functions.

D. CENTRAL HEATING

Overview and detailed descriptions of various central heating modes.

E. DOMESTIC HOT WATER (DHW)

Overview and detailed descriptions of domestic hot water modes and priority.

F. SERVICE NOTIFICATION

Setting up service reminders based on hours, cycles, or date.

G. SYSTEM TEST

Using system test mode for setup, troubleshooting, and obtaining combustion readings.

H. STATUS & FAULT HISTORY

Viewing boiler status, sensor readings, and fault history.

I. SENSOR RESISTANCE

Typical resistance values for boiler sensors at different temperatures.

J. MULTIPLE BOILERS

Setting up and operating multiple boilers in a cascade system.

K. DEFAULTS

Restoring factory or site default settings for the boiler control.

9. START-UP PROCEDURE

A. GENERAL

Initial checks for water, gas, electricity, and proper installation before startup.

B. CHECK WATER PIPING

Filling the boiler with water, purging air, and checking for leaks.

C. CHECK GAS PIPING

Verifying gas supply pressure and performing leak checks.

D. CHECK OPERATION

Testing boiler shutdown at setpoint, combustion readings, and fan speeds.

E. LIGHTING & OPERATING PROCEDURES

Step-by-step instructions for safely lighting and operating the boiler.

10. TROUBLESHOOTING

A. BLOCKING ERRORS

Understanding and correcting blocking errors displayed by the control.

B. LOCKING ERRORS

Understanding and correcting locking errors that require a control reset.

C. ERROR MESSAGES IN A CASCADE SYSTEM

Information on error messages when using a cascade system.

D. WARNING ERRORS

Identifying and correcting sensor and system errors displayed as warnings.

11. MAINTENANCE

A. GENERAL (WITH BOILER IN USE)

Routine observations and checks for the boiler while in operation.

B. WEEKLY (WITH BOILER IN USE)

Flushing the float-type low-water cut-off.

C. ANNUALLY (BEFORE START OF HEATING SEASON)

Annual inspection procedures for safety relief valve, limits, and burner.

D. CONDENSATE CLEANING INSTRUCTIONS

Procedures for removing and cleaning condensate tanks and hoses.

E. COMBUSTION CHAMBER COIL CLEANING INSTRUCTIONS

Steps for cleaning the heat exchanger coils using chemical solutions.

12. BOILER DIMENSIONS & RATINGS

13. REPAIR PARTS

PEERLESS PureFire PF-110 Specifications

General IconGeneral
BrandPEERLESS
ModelPureFire PF-110
CategoryBoiler
LanguageEnglish

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