Manuals / Quantum / Household Appliance / Boiler

Quantum GAS-FIRED BOILERS installation instructions Differential Air Pressure Switch Check

Models: GAS-FIRED BOILERS

1 68

Download 68 pages 29.18 Kb

Page 60

DIFFERENTIAL AIR PRESSURE SWITCH CHECK

The following steps and diagram indicate the locations of the connection points required to check the differential air pressure.

The differential air pressure switch is a safety device which will prevent the boiler from firing if there is an air intake, boiler heat exchanger or vent blockage.

Turn off service switch, or lower thermostat setting.

Remove vinyl caps from Tee and 4- way connector.

Install testing lines as shown to inclined manometer or differential pressure gauge with the ability to read 0.01” to 2.0” w.c.

Turn on service switch and set thermostat to call for heat.

Boiler Status	Differential Pressure (w.c.)	Pressure Switch Connects

Not Running	0”	Normally Open
Setpoint	1.00” for Model-100
	1.35” for Model-75
	1.55” for Model-50
Running Without	Greater Than Setpoints	Closed
Blockage
Running With	Less Than or Equal to	Open
Blockage	Setpoints

If manometer readings do not correspond to the chart above, check for possible causes:

-Blockage or moisture in suction lines

-Blockage in air intake or vent pipes

-Undersized air intake or vent pipes

-Loose blower wheel or motor shaft

-Inncorect pressure switch or pressure switch setpoint

When pressure reading is proper and the pressure switch is operating properly, remove testing lines and reinstall vinyl caps to Tee and 4-way connector.

C.

DIFFERENTIAL AIR PRESSURE SWITCH CHECK

58

Image 60

Quantum GAS-FIRED BOILERS installation instructions Differential Air Pressure Switch Check

Contents

DUNKIRK BOILERS INSTALLATION INSTRUCTIONSBOILERS Page TABLE OF CONTENTS INTRODUCTION RULES FOR SAFE INSTALLATION AND OPERATIONBEFORE INSTALLING THE BOILER ELECTRICAL WIRINGCHECK-OUTPROCEDURES AND ADJUSTMENTS MAINTENANCE AND CLEANINGSERVICE HINTS REPAIR PARTSINTRODUCTION BOILER RATINGS AND CAPACITIES 7$%/6$/9/5$7,1*61$785$/$13523$1*$66BOILERS FOR USE AT HIGH ALTITUDE 7$%/$02/1$785$/*$6+,*+$/7,785$7,1*6 7$%/%02/3523$1*$6+,*+$/7,785$7,1*67$%/&02/1$785$/*$6+,*+$/7,785$7,1*6 7$%/02/3523$1*$6+,*+$/7,785$7,1*67$%/02/1$785$/*$6+,*+$/7,785$7,1*6 7$%/02/3523$1*$6+,*+$/7,785$7,1*6RULES FOR SAFE INSTALLATION AND OPERATION BEFORE INSTALLING THE BOILERA. CODES B. BOILER SIZING C. CONSIDERATIONS FOR BOILER LOCATIOND. LOCATING THE BOILER E.COMBUSTION AIR AND VENT PIPE REQUIREMENTS2,/5&/$5$1&6 81,7F. CONDENSATE DRAIN REQUIREMENTS G.FOUNDATION REQUIREMENTSPLACING THE BOILER NEAR BOILER PIPING A. SUPPLY AND RETURN LINESFIGURE 2 SINGLE ZONE BOILER PIPING Page Page FIGURE 5 SINGLE ZONE BOILER PIPING B.PRESSURE RELIEF VALVEC.EXPANSION TANK AND MAKE-UPWATER FIGURE 6 DIAPHRAGM TYPE EXPANSION TANK PIPING Page FIGURE 8 CONDENSATE - DRAIN PIPING D. CONDENSATE DRAIN PIPINGCOMBUSTION AIR AND VENT PIPE F. CHILLED WATER PIPINGA. CONNECTIONS AND TERMINATION 4.Combustion air and vent piping lengths 0,1,0800$ ,080 917,1FIGURE 9 ROOF VENT/INTAKE TERMINATIONS FIGURE 10 SIDEWALL VENT/INTAKE TERMINATIONS FIGURE 11 COMBUSTION AIR AND VENT PIPING B.INSTALLATION GAS SUPPLY PIPINGA. CHECK GAS SUPPLY B. CONNECTING THE GAS PIPING C. CHECKING THE GAS PIPINGNEVER USE A MATCH OR OPEN FLAME TO TEST FOR LEAKS TABLE 3 GAS PIPE SIZESELECTRICAL WIRING A. ELECTRIC POWER SUPPLYFIGURE 12 GAS PIPING B. INSTALL YOUR THERMOSTAT C. Connect Circulator Pump WiringFIGURE 13 FIELD WIRING CONNECTIONS D.FIGURE 14 SCHEMATIC WIRING DIAGRAM FIGURE 15 LADDER WIRING DIAGRAM CONTROLS AND ACCESSORIES E. DRAFT INDUCER TEMPERATURE SAFETY SWITCHA. INTEGRATED BOILER CONTROL IBC B. GAS CONTROL VALVEF. CASTING TEMPERATURE SAFETY SWITCH G. DIFFERENTIAL PRESSURE AIR PROVING SWITCHH.DRAFT INDUCER I. CIRCULATOR PUMPL. FLAME ROLLOUT SAFETY SHUTOFF START - UPK. A.S.M.E. RATED PRESSURE RELIEF VALVE M. OPTIONAL EXTERNAL CONDENSATE PUMP3.Repeat step 2 for all remaining zones FOR YOUR SAFETY READ BEFORE OPERATING D. PLACING BOILER IN OPERATIONOPERATING INSTRUCTIONS TO TURN OFF GAS TO APPLIANCEPage E. TEST IGNITION SYSTEM SAFETY SHUTOFF DEVICE B. INSPECT VENTING AND AIR INTAKE SYSTEMC. INSPECT CONDENSATE DRAIN D. INSPECT SYSTEM PIPINGF. TEST HIGH LIMIT CONTROL AND ADJUST G. TEST OTHER SAFETY CONTROLSI. MEASURE THE NATURAL GAS INPUT RATE 3600xheating value from stepFIGURE 17 MANIFOLD PRESSURE MEASUREMENT DETAIL FIGURE 18 GAS VALVETop view of gas control J. SET THERMOSTAT TO DESIRED ROOM TEMPERATURE K REVIEW ALL INSTRUCTIONSINSTALLATION AND CHECK-OUTCERTIFICATE Date InstalledϒInstallation instructions have been followed ϒCheckout procedure and adjustments performedMAINTENANCE AND CLEANING A. BEGINNING OF EACH HEATING SEASONB.DAILY DURING HEATING SEASON 2.Cleaning Flue passages between boiler sections C. MONTHLY DURING HEATING SEASOND.PERIODICALLY DURING HEATING SEASON l.Connect gas line to gas valve d.Reinstall and connect the condensate trap, using the hose clamps to secure the various condensate lines to their fittings SERVICE HINTS DETAILED SEQUENCE OF OPERATION DETAILED SEQUENCE OF OPERATION END OF NORMAL SEQUENCE OF OPERATION DETAILED SEQUENCE OF OPERATIONTROUBLE SHOOTING INITIAL SERVICE CHECKS6 67067$786 67$7861,&$76 TROUBLE SHOOTINGTROUBLESHOOTING CHART TROUBLE SHOOTINGELECTRICAL SHOCK HAZARD MAY CAUSE SERIOUS INJURY OR DEATHTROUBLE SHOOTING TROUBLESHOOTING CHARTTROUBLE SHOOTING TROUBLESHOOTING CHARTTROUBLE SHOOTING TROUBLESHOOTING CHARTTROUBLE SHOOTING TROUBLESHOOTING CHARTTROUBLE SHOOTING TROUBLESHOOTING CHARTDIFFERENTIAL AIR PRESSURE SWITCH CHECK REPAIR PARTS JACKET AND BASE ASSEMBLYREPAIR PARTS $&.7$1%$6$660%70180%5 6&5,37,21CONDENSATE DRAIN TRAP ASSEMBLY 2116$75$,175$3$660%70180%5 6&5,37,21REPAIR PARTS BOILER BLOCK AND PIPING ASSEMBLYREPAIR PARTS 2,/5%/2&.$13,3,1*$660%70180%5 6&5,37,21D.MIXER AND AIR PRESSURE SWITCH ASSEMBLY REPAIR PARTSREPAIR PARTS 0, 5$1$,53566856 ,7&+$660%70180%5 6&5,37,21REPAIR PARTS FLUE ADAPTER AND EXHAUST ASSEMBLY8$$375$1 +$8675$660% 70180%5