A.O. Smith HW 610 warranty HW 300 to, D. System, Single Stage I.I.D. Honeywell GAS Valve

Page 24

HW 300 TO 670

I.I.D. SYSTEM

CONNECTION DIAGRAM

120 VAC 60 HZ	GND
L1 (HOT) L2 (NEUTRAL)

** FUSED

4 X 4 JUNCTION BOX

WITH TERMINAL STRIP

WHITE

GAS VALVE

IGNITION MODULE

DISCONNECT

SWITCH

THERMAL BALANCER

MV

BROWN

MV

4W

MV/PV

WHITE

MV/PV

** WATER PUMP

** TANK TEMP

PROBE

3Y

1B

2R

BLACK

TRANSFORMER

120/24V

WHITE/TAN

WHITE/TAN

PV

HIGH LIMIT

YELLOW

WHITE

RED

GREEN

PV

24V GND

24V

GND

SPARK

COM NO

**SAFETY FLOW SWITCH (REQUIRED)

COIL LIMIT

TO

PILOT

	SCHEMATIC DIAGRAM
	L1 (HOT)		L2 (NEUTRAL)
		120 VAC 60 HZ
	FUSED	THERMAL
	DISCONNECT	THERMAL
	DISCONNECT	BALANCER
	SWITCH	BALANCER	GND
	SWITCH

	TANK TEMP		WATER PUMP
	PROBE

SAFETY FLOW

SWITCH120V

24V

HIGH LIMIT	COIL
	LIMIT

IGNITION MODULE

CHASSIS

GROUND

MV MV/PV

IGNITOR WIRE TO

PILOT

PV

NOTE: IF REPLACING ANY FACTORY WIRING, USE TYPE 105°C WIRE OR EQUIVALENT, EXCEPT FOR THE IGNITION WIRE WHICH USES 250°C WIRE AND THE COIL LIMIT WHICH USES 200°C WIRE.

	GAS VALVE
	** THESE COMPONENTS	%%UWIRING
	** THESE COMPONENTS
	ARE NOT FACTORY	BY FACTORY
	INSTALLED AND MUST BE	BY FACTORY
	INSTALLED AND MUST BE	BY INSTALLER
	SUPPLIED BY THE	BY INSTALLER
	SUPPLIED BY THE
	INSTALLER.
		192359-000 Rev. 3

SINGLE STAGE I.I.D. - HONEYWELL GAS VALVE

HW (300 thru 670). (NATURAL AND PROPANE GAS) - U.S. & CANADA

FIGURE 16.

24

Image 24

Contents Models HW 300, 399, 420, 520, 610 Tennessee Waltz Parkway Ashland City, TNSafe INSTALLATION, USE and Service Important DefinitionsGeneral Safety Table of Contents Dimensions and Capacity Data Propane NaturalRecovery Capacities 27.7 33.3High Altitude Installations IntroductionLIQUefied petroleum gas models Controls and Function Manual Reset High Limit High Limit Switch Safety Flow SwitchThermal Balancer GPM LPMSafety Relief Valves Tank Temperature Control General ThermometersDrain Valve Not Supplied Required AbilityConfined Space S. Installations Canadian InstallationsAIR Requirements Unconfined SpaceInstallation Clearances Typical Boiler InstallationVenting LevelingVent Pipe Installation Connecting Boiler to a Common VentDraft Hood Vent ConnectionVenting Sidewall Optional Power Vent System Multiple Vent TableVenting System Combined Vent Sizing Tables Model HW-300 BoilerSystem Installations Conventional InstallationsLINEAR-TEMP Installations ONE Boiler Installed Independent of the Primary SystemNO. Suggested Items for Installation Schematic of the LINEAR-TEMPSYSTEMBoiler Inlet Outlet Sizes Minimum Branch Sizes to BoilersGAS Connections Purging and Sizing Correct GASExample Specific Multiplier GravityGAS Pressure Regulators Model Rated Manifold Pressure Number Input Natural PropaneWiring Wiring ConnectionsHW 300 to D. SystemSingle Stage I.I.D. Honeywell GAS Valve HW 300 thru 670. Natural and Propane GAS U.S. & CanadaLINEAR-TEMP Installations Boilers and Secondary Circulator are Controlled by Page Canadian MODELS, Junction BOX W/6 Terminals MODELS, Jucntion BOX W/4 TerminalsCanadian MODELS, Junction BOX W/6 Terminals Schematic MODELS, Junction BOX W/4 Terminals MODELS, Junction BOX W/4 Terminals Wiring Figures 16 and 17 on Pages 24 PipingCommercial Boiler with Vertical Tank USE this Table for Correct Pump and Water Pipe SizeCommercial Boiler with Horizontal Tank Wiring Figures 21 to 27 on Pages 28 to Commercial Boiler with Vertical TANK, CER-TEMPHW-300 HW-399 HW-420 HW-520 Three HW-520s, HW-610s or HW-670s UP-FLOW Model USE this Table for Correct Pump and Water Pipe Size Operation and START-UP Instructions Filling the SystemPilot and Main Burner Main BurnerPilot Burner Electronic Ignition Checking and Adjusting the Input Consumption RateRefer to Operating at Full Input or Full Capacity Stage Main Burner Operation Flame Current Sensed For Your Safety Read Before Lighting SET T HE Thermostat to Lowwest Setting URN Pilo T Firing VA LVE CounterclockwiseGeneral Maintenance Manual Reset High Limit Switch Continuity TestRelief Valve Cleaning and Flushing Instructions PRE-TROUBLESHOOTINGHOT Water Supply Boilers Preventive Maintenance Internal ContaminantsTroubleshooting CER-TEMP 80 Recovery System Checkout ProcedureYES Burner ignition problems? Is ceramic insulator surrounding the electrode in goodCondition not cracked or broken? Is there excessive draft conditions that may cause pilotMV & MV/PV? Replace pilot burner assembly LED Status and Troubleshooting Location of LEDs Flame LED YellowStatus LED Green OFFNo Call for Heat Not applicable None OFF Limited Warranty Conditions and Exceptions