PB Heat DE Series User's Information Manual

USER’S INFORMATION MANUAL

S

ERIES

DE G

AS

B

OILERS

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.

2

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.

3

Figure 2: Safety Relief Valve
Hook-Up Installation with Air
Elimination in System Piping

Figure 3: Safety Relief Valve

Hook-Up with Air Elimination