PB Heat DE Series Guide

USER’S INFORMATION MANUAL
SERIES DE GAS BOILERS
TO THE INSTALLER: This manual is the property of the owner and must be affixed near the boiler for
future reference.
TO THE OWNER: This boiler should be inspected annually by a Qualified Service Agency.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
TO BE COMPLETED BY THE INSTALLER
Service Agency Phone No.
Address
Boiler Model No. DE- Serial No. Date of Installation:
– Do not store or use gasoline or other flammable 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 neighbor’s
phone. Follow the gas supplier’s instructions.
•If you cannot reach your gas supplier, call the fire
department.
– Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
DE8040 R3 (12/10-5C)
Printed in U.S.A.
PB HEAT, LLC
131 S. CHURCH ST • BALLY, PA 19503

Basic Operation
WARNING
CAUTION
Service on this boiler should be undertaken only by trained and skilled personnel from a
qualified service agency.
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
appliance.
Do not use this boiler if any part has been under water. Immediately call a qualified service
agency to inspect the boiler and to replace any part of the control system and any gas control
which has been under water.
A. General. This water boiler is an induced draft appliance and is equipped with controls for proper
operation. All controls must be in proper working order. Contact a qualified service agency to provide
annual maintenance as specified in Installation, Operation and Maintenance Manual.
1. Limit. See Figure 1. A device which automatically interrupts boiler operation when the water
temperature exceeds the set point. Maximum allowable temperature is 220°F (104°C).
Original equipment with this boiler is a Honeywell L4080B1253. Boiler operation is interrupted
when system temperature reaches cut-out temperature. Boiler operation resumes automatically
when system temperature falls approximately 15°F (8°C) below the cut-out temperature.
2. Flame Rollout Switch. See Figure 1. A device which automatically interrupts boiler operation
when flames or excessive heat are present in the combustion area. The control is a single use
device. If the control is activated to interrupt boiler operation, do not attempt to place boiler in
operation. Contact a qualified service agency.
3. Pressure Switch. See Figure 1. A device which automatically interrupts boiler operation when
there is excessive blockage in the vent system or fan motor does not operate. This control is an
automatic reset device. If control is activated to interrupt boiler operation, do not attempt to place
boiler in operation. Contact a qualified service agency.
4. Pilot. The pilot provides the ignition source for the main burners. Your boiler has an intermittent
pilot. The intermittent pilot ignites only when there is a call for heat and extinguishes when the call
for heat ends. See Figure 5.
5. Gas Valve. The gas valve monitors pilot flame and regulates gas flow to the burners and pilot. See
Figure 1.
6. Safety Relief Valve. A device which protects the boiler against excessive pressure. The safety
relief valve can discharge a large amount of hot water - the installer should provide piping to
discharge water near floor at a floor drain. See Figures 2 and 3. If the safety relief valve discharges
water, follow instructions TO TURN OFF GAS TO APPLIANCE (see Figure 4), and contact a
qualified service agency.
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Figure 1: Control Locations
B. Instructions to place boiler in operation and to turn off the boiler are shown on the Operating
Instruction Label posted on the inner jacket panel of the boiler. The instructions are also shown in
Figure 4.
C. Sequence of Operation.
1. Thermostat calls for heat, energizes circulator.
2. Limit senses boiler water temperature. Prevents operation until water temperature falls
approximately 15°F (8°C) below the cut-out temperature.
3. Fan energizes.
4. Gas valve energizes.
a. Igniter on.
b. Pilot gas on, igniting pilot.
5. Pilot flame detected.
a. Igniter off.
b. Main gas on, igniting main burners.
Note: If pilot flame is not detected within 30 seconds, the igniter is turned off for 30 seconds, and then
turned back on. If the pilot is not detected within 30 seconds, the igniter and pilot gas are turned off
for 5 minutes. The sequence then resumes at Step 4a.
6. Call for heat ends.
Pilot and main gas off, extinguishing pilot and main burners.
If this sequence is not followed exactly, follow instructions TO TURN OFF GAS TO APPLIANCE (see
Figure 4) and contact a qualified service agency.
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Figure 2: Safety Relief Valve
Hook-Up Installation with Air
Elimination in System Piping
Figure 3: Safety Relief Valve
Hook-Up with Air Elimination

Figure 4: Intermittent Ignition Operating Instructions
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User Maintenance
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WARNING
Product Safety Information
Refractory Ceramic Fiber Product
This appliance contains materials made from refractory ceramic fibers (RCF). Airborne RCF,
when inhaled, have been classified by the International Agency for Research on Cancer (IARC),
as a possible carcinogen to humans. After the RCF materials have been exposed to
temperatures above 1800°F (980°C), they can change into crystalline silica, which has been
classified by the IARC as carcinogenic to humans. If particles become airborne during service
or repair, inhalation of these particles may be hazardous to your health.
Avoid Breathing Fiber Particulates and Dust
Suppliers of RCF recommend the following precautions be taken when handling these materials:
Precautionary Measures:
Provide adequate ventilation.
Wear a NIOSH/MSHA approved respirator.
Wear long sleeved, loose fitting clothing and gloves to prevent skin contact.
Wear eye goggles.
Minimize airborne dust prior to handling and removal by water misting the material and
avoiding unnecessary disturbance of materials.
Wash work clothes separately from others. Rinse washer thoroughly after use.
Discard RCF materials by sealing in an airtight plastic bag.
First Aid Procedures:
Inhalation: If breathing difficulty or irritation occurs, move to a location with fresh clean air.
Seek immediate medical attention if symptoms persist.
Skin Contact: Wash affected area gently with a mild soap and warm water. Seek immediate
medical attention if irritation persists.
Eye Contact: Flush eyes with water for 15 minutes while holding eyelids apart. Do not rub eyes.
Seek immediate medical attention if irritation persists.
Ingestion: Drink 1 to 2 glasses of water. Do not induce vomiting. Seek immediate medical
attention.

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A. General Housekeeping (Continuous).
1. Keep boiler area clear and free of combustible materials and obstructions to the free flow of
combustion and ventilation air to the boiler.
2. Do not store or use gasoline or other flammable vapors or liquids in the vicinity of the boiler or any
other appliance.
3. Do not store or use sources of hydrocarbons in the vicinity of the boiler. Sources of hydrocarbons
include bleaches, cleaners, chemicals, sprays, paint removers, fabric softeners and refrigerants.
4. Check Safety Relief Valve for water leakage. If leakage exists, contact a qualified service agency.
B. Inspect Vent System (Monthly): Vent pipe must be sealed with no separations, obstructions, or sags.
C. Inspect Pilot and Main Burner Flames (Monthly).
1. Remove Front Jacket Panel by lifting and pulling out.
2. Adjust thermostat to lowest setting.
3. Loosen screws at Burner Observation Cover, located on base, just above main burners and
remove cover by lifting.
4. Adjust thermostat to highest setting. Verify operation follows Section C, Sequence of Operation, Of
this manual.
5. View flames through observation port.
6. Check pilot flame. See Figure 5. The pilot flame should be medium blue covering approximately
³⁄₈" to ¹⁄₂" (10 to 12 mm) of the sensing probe. If the flame is yellow and lazy, follow instructions TO
TURN OFF GAS TO APPLIANCE (see Figure 4), and contact qualified service agency.
CAUTION
Vent system operates under positive pressure when venting horizontally or vertically with 3”
diameter AL294C vent. Leakage in vent system will spill products of combustion into building.
Severe vent system leakage can cause carbon monoxide poisoning.
Burner Observation Cover may be hot
CAUTION
WARNING
Service on this boiler should be undertaken only by trained and skilled personnel from a
qualified service agency. Inspections should be performed at intervals specified in the
Installation, Operation and Maintenance Manual and this User’s Information Manual. Maintain
manuals in a legible condition.
Keep boiler area clear and free of combustible materials, gasoline and other flammable vapors
and liquids.
Do not place any obstructions in boiler room that will hinder flow of combustion and
ventilation air.

7. Check main burner flames. See Figure 5. The flames should have clearly defined inner cones
approximately 1½" (40 mm) high and should have a very sharp blue color characteristic. If the
flame is yellow and lazy, follow instructions TO TURN OFF GAS TO APPLIANCE (see Figure 4),
and contact qualified service agency.
8. Adjust all thermostats to lowest setting to shut down boiler.
9. Replace Burner Observation Cover and Front Jacket Panel.
10. Adjust thermostats to normal setting.
D. Controls (as required by control manufacturer)1.
1. Safety Relief Valve. Conduct try lever test as outlined in manufacturer’s instruction tag on the
safety relief valve.
2. Low Water Cut-off (if used). Follow instructions provided by control manufacturer.
E. General Inspection and Maintenance (Annual). For continued safe operation a qualified service
agency must provide a more detailed inspection of burners, heat exchanger and vent system, and
provide maintenance as specified in the Installation, Operation and Maintenance Manual.
Figure 5: Pilot and Main Burner and Flames
1Controls maintenance may be part of annual inspection and maintenance by a qualified service agency if annual frequency is
xspecified by controls manufacturer.
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