State Water Heaters SUF 60 THRU 120 - Manuals

4 Servicing should only be performed by a Qualified Service Agent GENERAL INFORMATION INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling,...

5 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS – SUF 120 AND 150 GAS PRESSURE ADJUSTMENT PROCEDURE: GAS PRESSURE SUF 120 AND 150 MODELS Main line gas pressure to the water heater for natural gas should be between a maximum of 10.5" w.c. (2.59 kPa) for n...

6 Servicing should only be performed by a Qualified Service Agent Compare result to the de‑rated input required for the elevation at the installation location. Should it be necessary to adjust the gas pressure to the burner, to obtain the full input rate, the steps below should be followed: 3. Remov...

7 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS – SUF 199 AND 250 GAS PRESSURE ADJUSTMENT PROCEDURE: GAS PRESSURE SUF 199 AND 250 MODELS IMPORTANT NOTETHE SUF 199 AND 250 MODELS INCORPORATE A NEW GAS CONTROL, WHICH OPERATES AT A MANIFOLD PRESSURE OF 0" w...

8 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS – SUF 300, 400, 500 GAS PRESSURE ADJUSTMENT PROCEDURE: GAS PRESSURE SUF 300, 400, 500 A minimum dynamic gas supply pressure of 5.2" w.c. (1.29 kPa) for Natural Gas and 11" w.c. (2.74 kPa) for LP Gas is ...

9 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS – SUF 300, 400, 500 SEE MANUAL FOR COMPLETE INSTALLATION INSTRUCTIONS & DETAILS

10 Servicing should only be performed by a Qualified Service Agent INSTALLATION – VENTING CATEGORY AND MATERIALS ULTRA FORCE VENTING Category IV • Positive pressure in vent, above atmospheric.• These models will produce excessive condensate in vent.• Vent system must not be combined with any other a...

11 Servicing should only be performed by a Qualified Service Agent VENTING TABLES – SUF 120 ‑ 250 Maximum equivalent feet of intake and vent pipe using 3" PVC is 50 feet (15.2 m). Equivalent feet must include any 90° elbows (two 45° elbows equal one 90° elbow). Three inch diameter 90° elbows are...

12 Servicing should only be performed by a Qualified Service Agent CONCENTRIC VENTING Concentric venting allows for a single wall penetration. For multiple water heater installation using this vent practice any additional vents of this type may be located 12" on centerline to either side of the ...

13 Servicing should only be performed by a Qualified Service Agent VENT CONDENSATION Failure to properly install the drain line on the condensate elbow will result in a water heater shut down and a “blocked exhaust” fault message. The average dew point of natural gas flue products is 127°F. Propane ...

14 Servicing should only be performed by a Qualified Service Agent VENTING – ALL MODELS – SINGLE PIPE DIRECT VENT – USING OUTSIDE AIR TERMINATION CLEARANCES SIDEWALL POWER VENT V X VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED v v A G V FIXED CLOSED FIXED CLOSED OPERABLE OPERAB...

15 Servicing should only be performed by a Qualified Service Agent VENTING – ALL MODELS – TWO PIPE DIRECT VENT – USING OUTSIDE AIR TERMINATION CLEARANCES SIDEWALL DIRECT VENT V X VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED v v A G V FIXED CLOSED FIXED CLOSED OPERABLE OPERABLE...

16 Servicing should only be performed by a Qualified Service Agent VENT TERMINATION – DIRECT VENT – ALL MODELS WHEN LOCATING THE TERMINALS ON A SIDEWALL, THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED. 1. The intake vent terminal and the exhaust vent terminal must term...

17 Servicing should only be performed by a Qualified Service Agent DIRECT VENTING – ALL MODELS The air intake provided on the unit contains a mesh screen to prevent large particles from entering the unit. WHEN THE UNIT IS TO BE SET UP AS A DIRECT VENT, THE BALANCE PLATE AND MESH SCREEN MUST BE REMOV...

18 Servicing should only be performed by a Qualified Service Agent CONTROL OVERVIEW Interaction with the water heater controller is through an LCD display called the Universal Interface Module (UIM) . This screen is also referred to as the “desktop” or “desktop menu” . Up and down buttons and three ...

19 Servicing should only be performed by a Qualified Service Agent The table of status icons describes graphically operational details of the water heater. Below is a legend of all the status icons: Status Icon Description The temperature of the water in the tank has fallen and the water heater will...

20 Servicing should only be performed by a Qualified Service Agent ADJUSTING TANK TEMPERATURE – OPERATING SET POINT – DIFFERENTIAL The Operating Set Point of this water heater determines the regulated temperature for the water in the tank. This parameter is adjusted in the desktop Temperature menu. ...

21 Servicing should only be performed by a Qualified Service Agent ACTION: Press Change then use the UP and DOWN buttons to change the temperature Set Point. DISPLAY: Note: This procedure can also be used to change the Differential . The tank Upper and Lower Temperatures are not user changeable. The...

22 Servicing should only be performed by a Qualified Service Agent CHANGING THE DISPLAY UNITS The desktop menu has the option of selecting between degrees Fahrenheit and degrees Celsius for temperature displays. This can be found in the “Display Settings” menu. Also in this menu, you may adjust how ...

23 Servicing should only be performed by a Qualified Service Agent ACTION: Press Update to accept the change or Cancel to reject it. DISPLAY:

24 Servicing should only be performed by a Qualified Service Agent FAULT AND WARNING CONDITIONS – ADVANCED DIAGNOSTIC INFORMATION This water heater control has the ability to monitor almost all aspects of the water heater’s operation. In the event of an undesirable or unsafe condition that occurs, t...

25 Servicing should only be performed by a Qualified Service Agent ACCESS TO THE CURRENT FAULT OR WARNING When a fault or warning has been detected by the control it will automatically be displayed on the screen and the back light will blink. If you choose to leave the current fault or warning by pr...

26 Servicing should only be performed by a Qualified Service Agent FAULT CODES All faults, warnings, and errors are given in plain English text. Some have a Code alpha/numeric value assigned. Please read the full English text and not the alpha/numeric value when calling for assistance.Following is a...

27 Servicing should only be performed by a Qualified Service Agent VIEWING THE FAULT HISTORY – VIEWING INFORMATION ABOUT THE HEATER The controller for this water heater will store a history of ten of the last Fault and Warning conditions that occurred. This is stored in the Fault History. The inform...

28 Servicing should only be performed by a Qualified Service Agent CONTROL SEQUENCE (TYPICAL ALL MODELS) TYPICAL SEQUENCE 1. When the control is powered it should display “waiting for connection” and “UIM v2.06”*. The manufacturer and unit model will be next. The next display will include water temp...

29 Servicing should only be performed by a Qualified Service Agent CONTROL SEQUENCE FLOW CHART

30 Servicing should only be performed by a Qualified Service Agent CONTROLS – CENTRAL CONTROL BOARD – CCB The Central Control Board or CCB is contained in the housing shown below. Access to the board and the wiring harness plugs can be accomplished by removing two Phillips screws holding the cover. ...

31 Servicing should only be performed by a Qualified Service Agent This is the back of the UIM.

32 Servicing should only be performed by a Qualified Service Agent CONTROLS – GAS VALVE SUF 120 The gas control valve on the SUF 120 has a built-in adjustable pressure regulator. The adjustment screw is accessed by removing the cap screw market regulator in the illustration.Inlet gas pressure may be...

34 Servicing should only be performed by a Qualified Service Agent CONTROLS – GAS VALVE SUF 199 AND 250 Pressure readings may be taken on the gas valve by connecting to the pressure ports on the valve. The manifold pressure on this valve is 0" WC (0 kPa) when the water heater is running. Refer t...

35 Servicing should only be performed by a Qualified Service Agent CONTROLS – GAS VALVE, ORIFICE CHART – SUF 300/400 The gas control valve has a built-in field adjustable pressure regulator. The gas valve for the SUF Natural gas model is shown below. This is a 24V. solenoid operated gas valve. Low G...

36 Servicing should only be performed by a Qualified Service Agent CONTROLS – GAS VALVE, ORIFICE CHART – SUF 500 The gas control valve has a built-in field adjustable pressure regulator. The regulator may be adjusted by removing the cap screw marked “regulator”. The adjustment screw is underneath. T...

37 Servicing should only be performed by a Qualified Service Agent CONTROLS – PRESSURE SWITCHES – ALL MODELS All SUF models are provided with four pressure switches. These switches are essential to the safe and proper operation of the unit. The switches are wired to the central control board (CCB) i...

38 Servicing should only be performed by a Qualified Service Agent CONTROLS – PRESSURE SWITCHES – SUF 120 THROUGH 250 Note: Check the website www.statewaterheaters.com for Technical Bulletin S023-06 “Air Pressure Switches” under “Literature/Service Handbooks”

40 Servicing should only be performed by a Qualified Service Agent CONTROLS – CONNECTIONS, IGNITER, FLAME SENSOR, SIGHT GLASS, POWERED ANODES The connections for the hot surface igniter and the flame sense rod are shown below. Also shown is the burner sight glass. These features are typical for all ...

41 Servicing should only be performed by a Qualified Service Agent HOT SURFACE IGNITER / FLAME SENSOR / CONTROL TIMING HOT SURFACE IGNITER This water heater is equipped with an electric hot surface igniter. The igniter material is silicone carbide and should not be handled with bare hands because of...

42 Servicing should only be performed by a Qualified Service Agent BLOWER SPEED CONTROL SUF 199 AND 250 The input of the SUF 199 and SUF 250 is determined by blower. The input of the water heater may be determined by clocking the meter as shown on page 5 or by making sure the blower is receiving the...

43 Servicing should only be performed by a Qualified Service Agent VARIABLE FREQUENCY DRIVE – SUF 400 AND 500 The Ultra Force SUF 400 and 500 models have a variable frequency drive (VFD) that controls the rpm of the blower motor. The VFD receives a signal from the central control board that instruct...

44 Servicing should only be performed by a Qualified Service Agent VARIABLE FREQUENCY DRIVE – BLOWER SPEED AND PRESSURE READINGS The instructions for the VFD are sent from the CCB to in the form of a DC current. The chart below lists the current readings, the frequency signal displayed by the VFD, a...

45 Servicing should only be performed by a Qualified Service Agent WIRING DIAGRAM – SUF 120 ‑ 300 2 GREEN WHITE RED BLACK 1 12 BLACK 3 WHITE COMBUSTION BLOWER UPPER TEMPERATURE PROBE 1 RED (ECO) 4 RED (ECO) 2 BLACK3 BLACK 1 BLACK120 VAC HOT 3 WHITE 120 VAC NEUTRAL4 YEL 24 VAC4 YEL 24 VAC LOWER TEMPE...

46 Servicing should only be performed by a Qualified Service Agent WIRING DIAGRAM – SUF 400, 500 1 2 5 6 WHITE GREEN BLACK BLACK WHITE RED COMBUSTION BLOWER NOTE: COMBUSTION BLOWER MOTORS ON 400,000 & 500,000 Btu/hr MODELS ARE THREE PHASE (3Ø) MOTORS. BLACK, WHITE AND RED WIRES MUST BE WIRED AS ...

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