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035-17233-000-C-0702
2 Unitary Products
TABLE OF CONTENTS
GENERAL ......................................3
SAFETYCONSIDERATIONS .......................3
REFERENCE ........................................4
RENEWALPARTS .........................................4
AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION ..................................4
LIMITATIONS ........................................4
LOCATION ..........................................5
RIGGING AND HANDLING .............................5
CLEARANCES .......................................5
DUCTWORK .........................................6
FIXEDOUTDOORAIRINTAKEDAMPER..................6
CONDENSATEDRAIN.................................7
COMPRESSORS .....................................7
FILTERS............................................7
SERVICEACCESS ...................................7
THERMOSTAT.......................................7
POWERANDCONTROLWIRING........................7
COMBUSTIONDISCHARGE............................8
GASPIPING.........................................8
GASCONNECTION ...................................8
L.P.UNITS,TANKSANDPIPING .......................10
VENTANDCOMBUSTIONAIRHOODS ..................11
OPTECONO/MOTORIZEDDAMPERRAINHOOD .........11
ENTHALPYSETPOINTADJUSTMENT........................11
PWREXH/BARORELIEFDMPR&RAINHOODOPT .......11
OPERATION ...................................19
COOLINGSYSTEM ..................................19
PRELIMINARYOPERATIONCOOLING ..................19
COOLINGSEQUENCEOFOPERATION .................19
NOOUTDOORAIROPTIONS ...............................19
ECONOMIZER WITH SINGLE ENTHALPY SENSOR . . . . . . . . . . . . . 19
ECONOMIZERWITHDUALENTHALPYSENSORS ..............19
ECONOMIZERWITHPOWEREXHAUST ......................19
MOTORIZEDOUTDOORAIRDAMPERS ......................19
CONTINUOUSBLOWER ...................................19
SAFETYCONTROLS.................................19
HEATINGSYSTEM ..................................20
CONTINUOUSBLOWER ...................................20
INTERMITTENTBLOWER ..................................20
SAFETYCONTROLS.................................20
HEATANTICIPATORSETPOINTS ......................21
STARTUP.....................................21
PRE-STARTCHECKLIST .............................21
OPERATING INSTRUCTIONS ..........................21
TO LIGHT PILOT AND MAIN BURNERS: . . . . . . . . . . . . . . . . . . . . . . . 21
TOSHUTDOWN..........................................22
POST-STARTCHECKLIST(GAS) ......................22
MANIFOLDGASPRESSUREADJUSTMENT..............22
PILOTCHECKOUT ..................................22
BURNERINSTRUCTIONS.............................22
BURNERAIRSHUTTERADJUSTMENT..................23
CHECKINGSUPPLYAIRCFM .........................23
ADJUSTMENTOFTEMPERATURERISE ................24
BELTDRIVEBLOWER .....................................24
CHECKINGGASINPUT ..............................24
NATURALGAS ...........................................24
SECURE OWNER’S APPROVAL ........................24
MAINTENANCE.................................25
NORMALMAINTENANCE .............................25
FILTERS ................................................25
MOTORS................................................25
OUTDOORCOIL..........................................25
BURNER & PILOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TO CLEAN BURNERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
COMBUSTIONAIRDISCHARGE.............................25
CLEANINGFLUE&HEATINGELEMENTS ................25
TROUBLESHOOTING ...........................26
LIST OF FIGURES
Fig. # Pg. #
1 TYPICALRIGGING............................5
2 CENTEROFGRAVITY.........................5
3 FIXEDOUTDOORAIRDAMPER .................6
4 RECOMMENDEDDRAINPIPING ................7
5 TYPICALFIELDWIRING .......................9
6 EXT SUPPLY CONN EXT SHUT-OFF . . . . . . . . . . . . 10
7 BOTTOMSUPPLYCONNEXTSHUT-OFF ........10
8 VENTANDCOMBUSTIONAIRHOODS ..........11
9 ENTHALPYSETPOINTADJUSTMENT ...........12
10 UNITDIMENSIONSFRONTVIEW...............14
11 UNITDIMENSIONSRAINHOOD ................14
12 UNITDIMENSIONSREARVIEW ................15
13 208 VOLT & HIGH SPEED DRIVE ACCY . . . . . . . . . 16
14 GASVALVEPIPING ..........................20
15 GASVALVEANDCONTROLS..................21
16 TYPICALGASVALVE ........................22
17 PROPERFLAMEADJUSTMENT ................22
18 TYPICAL FLAME APPEARANCE . . . . . . . . . . . . . . . . 23
19 BELTADJUSTMENT .........................23
20 PRESSUREDROP ...........................24
21 TYPICALFLUEBAFFLEINSTALLATION .........26
LIST OF TABLES
Tbl. # Pg. #
1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . . 3
2 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . 4
3 CONTROLWIRESIZES.........................8
4 GAS HEAT APPLICATION DATA . . . . . . . . . . . . . . . . . 9
5 PIPESIZING.................................10
6 PHYSICALDATA .............................13
7 DHGVOLTAGELIMITATIONS ..................13
8 MINIMUMCLEARANCES ......................13
9 DHGELECTRICALDATA ......................13
10UTILITIESENTRY ............................15
11DHG 15T SUPPLY AIR BLOWER PERFORMANCE . . 16
12DHG 20T SUPPLY AIR BLOWER PERFORMANCE . . 17
13STATICRESISTANCES........................18
14POWER EXHAUST PERFORMANCE . . . . . . . . . . . . . 18
15BLOWERMOTORANDDRIVEDATA.............18
16LIMITCONTROLSETTING .....................21
17HEATANTICIPATORSETPOINT ................21
18GASRATE-CUBICFEETPERHOUR ............24