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Installation & Operation Manual

11  

Operating information 

Monitor external limits

Connections are provided on the connection board for 
external limits such as flow switch, low water cutoff, gas 
pressure switches, and a louver proving switch.  The SMART 
SYSTEM will shut off the burner and inhibit relighting 
whenever any of these external limits open.

Run-time and alarm outputs

The boiler provides dry contacts for indicating when the 
boiler is running, and when it is unable to operate.

Run-time and cycle counting

The control uses two timers to monitor the total hours of 
burner operation.  One timer monitors the time the boiler is 
firing in the Space Heating Mode.  The other timer monitors 
the time the boiler is in the DHW Mode.

The control uses two (2) ignition counters to monitor the 
amount of boiler cycles.  The first counter counts all ignitions 
of the control.  The second counter counts only ignition 
attempts that have failed.  

Service reminder

The control can be programmed for service reminder 
notification.  This notification will become active when either 
a set time frame has expired, or a set amount of running 
hours or cycles has expired (all adjustable by the installer).  
The display will show a Maintenance Required screen.  The 
installer's name and phone number can be programmed into 
the control.  This information will appear on the Maintenance 
Required screen.  The service reminder notification can be 
reset or disabled by the installer.

Error logging

The control will hold in memory the last 10 lockouts as 
well as the last 10 blockings.  The date and time of the 
occurrence will be recorded as well.  Only the 10 most current 
occurrences of each will be held in memory.

Boiler temperature regulation

Operating temperature (target)

The SMART SYSTEM control module senses water 
temperature and regulates boiler firing and firing rate to 
achieve a target temperature.  The target temperature can be 
set between 32°F and 190°F.

•   Target temperature is fixed when the outdoor 
 

sensor is not installed.

•   Target temperature is calculated as described in 
 

this section under “Outdoor Reset Operation” and 

 

“Target Temperature Boost” when the outdoor 

 

sensor is connected.  

High limit operations

The Knight wall mount is equipped with adjustable automatic 
reset and manual reset high limits.  The automatic reset high 
limit has a maximum set point of 200°F and the manual reset 
high limit has a maximum set point of 210°F.

When the outlet temperature exceeds 200°F, the automatic 
high limit action occurs.  The boiler shuts down until the outlet 
water temperature cools below 190°F, and a 60 second timer 
has expired.  If the outlet temperature continues to increase, the 
manual reset high limit action will occur at 210°F.

High limit test procedure

1.  Turn ON the main power to the boiler by placing the 
 

ON/OFF switch in the ON position.

2.  From the Status Screen, press the NAVIGATION dial to 
 

access the Set Points Screen.

3.  Press the LEFT SELECT (LIMITS) key.
4.  Select the manual reset high limit (MRHL) by rotating 
 

the NAVIGATION dial counterclockwise, then press 

 

the NAVIGATION dial.

5.  Decrease the set point of the MRHL to below the current 
 

outlet temperature (or to its minimum setting, whichever 

  is higher) by turning the NAVIGATION dial 
 counterclockwise.
6.  Press the RIGHT SELECT [SAVE] key.
7.  Press the RIGHT SELECT [HOME] key.  The new 
 

parameter will upload to the control.

8.  If the current outlet temperature is above the new MRHL 
 

set point, the MRHL will function causing boiler lockout.  

 

If this occurs, skip to Step 11.

9.  If the current outlet temperature is below the new MRHL 
 

set point, locate the pinhole (SERVICE button) below the 

 

RESET button on the display board.  Insert a thin probe 

 

(such as a paper clip) into the hole and press the button 

 

continuously for five (5) seconds to place the boiler into 

 

Service Mode.  In Service Mode, the boiler will fire at 

 

ignition speed and will then modulate up to full fire.

10.  Once the outlet temperature rises up to the MRHL set 
 

point, the MRHL will function, causing the boiler to shut 

 

down and lock out.

11.  Repeat Steps 2, 3 and 4.
12.  Set the MRHL to the appropriate set point by turning the 
 

NAVIGATION dial clockwise.

13.  Repeat Steps 6 and 7.
14.  Press the RESET button to clear the lockout.  
15.  If needed, press the RIGHT SELECT [STOP] key to exit 
 Service 

Mode.

Please note that the brackets ([]) denote 
screen status.

 NOTICE

Содержание Knight 399

Страница 1: ...ing installer service technician Read all instructions including this manual and the Knight Wall Mount Service Manual before installing Perform steps in the order given Failure to comply could result...

Страница 2: ...ect Venting Options 14 Install Vent and Combustion Air Piping 15 Requirements for Installation in Canada 16 Sizing 16 Materials 17 Optional Room Air 18 PVC CPVC 19 Polypropylene 20 Stainless Steel Ven...

Страница 3: ...heat exchanger and causes failure Addition of oxygen carried in by makeup water can cause internal corrosion in system components Leaks in boiler or piping must be repaired at once to prevent makeup w...

Страница 4: ...he water outlet is the water connection for water leaving the boiler and entering the system 14 Water inlet system return The water inlet is the water connection for water entering the boiler from the...

Страница 5: ...iew IMG00161 11 17 4 3 24 2 6 8 7 26 1 33 Left Side inside unit IMG00162 27 23 28 16 19 31 30 18 25 5 33 Right Side inside unit The Knight Wall Mount Boiler How it works continued IMG00117 21 13 14 20...

Страница 6: ...affixed to the unit Maximum allowed working pressure is located on the rating plate NOTICE Knight Wall Mount Boiler AHRI Rating Model Number Note Change N to L for L P gas models Input MBH Note 5 Min...

Страница 7: ...ler location WARNING This appliance is certified as an indoor appliance Do not install the appliance outdoors or locate where the appliance will be exposed to freezing temperatures or to temperatures...

Страница 8: ...NIMUM RIGHT 0 MINIMUM FRONT 6 MINIMUM RECOMMENDED SERVICE CLEARANCES FRONT 24 BOTTOM 24 LEFT SIDE 12 Figure 1 1 Closet Installation Minimum Required Clearances WARNING Note Service clearances are reco...

Страница 9: ...the National Fuel Gas Code ANSI Z223 1 and or CAN CGA B149 Installation Code Appliances located in residential garages and in adjacent spaces that open to the garage and are not part of the living sp...

Страница 10: ...heck the following venting components before installing Material For materials listed for use with this appliance see Section 3 General Venting For polypropylene or stainless steel venting an adapter...

Страница 11: ...and any appliance not connected to the common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fa...

Страница 12: ...Table Model LP Orifice Stamping 55 055 85 085 110 110 155 155 199 199 285 H285 399 8 0 NOTICE WARNING Table 2A LP Conversion Table Figure 2 2 Gas Valve Power Switch Venturi Removal REMOVE THE SCREWS S...

Страница 13: ...bolts are secured in the center of the studs 3 Hang the boiler on the bracket and secure the bottom of the boiler with two 2 field supplied toggle bolts WARNING Do not mount the boiler to a hollow wal...

Страница 14: ...3 2 PVC CPVC Concentric Sidewall Termination See page 26 for more details Direct venting options Sidewall Vent Figure 3 3 Two Pipe Vertical Termination See page 29 for more details Figure 3 4 PVC CPVC...

Страница 15: ...connection Combustion air piping must be supported per guidelines listed in the National Mechanical Code Section 305 Table 305 4 or as local codes dictate 2 Vent Connector FIG s 3 7 thru 3 9 Used to p...

Страница 16: ...are approved for use on the Knight wall mount boiler Both kits are listed to the ULC S636 standard for use in Canada When determining equivalent combustion air and vent length add 5 feet for each 90 e...

Страница 17: ...e meeting UL Standard 723 or 181A P or a high quality UL Listed silicone sealant such as those manufactured by Dow Corning or General Electric b Do not install seams of vent pipe on the bottom of hori...

Страница 18: ...provided with properly sized openings to assure adequate combustion air Please refer to instructions provided with the room air kit There will be a noticeable increase in the noise level during normal...

Страница 19: ...fficient cement was not applied and joint could be defective g Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe PVC CPVC Table 3D PVC CPVC Vent Pipe and F...

Страница 20: ...terminations must comply with listed options in this manual and be a single wall vent offering For use of flex pipe it is recommended to have the vent material in 32 F or higher ambient space before b...

Страница 21: ...systems and terminations listed in Tables 3G and 3H DO NOT mix vent systems of different types or manufacturers Failure to comply could result in severe personal injury death or substantial property d...

Страница 22: ...all shall not terminate adjacent to a wall or below building extensions such as eaves parapets balconies or decks Failure to comply could result in severe personal injury death or substantial property...

Страница 23: ...or window or any other gravity air inlet b Air inlet must terminate at least 12 inches above grade or snow line at least 12 inches below the vent termination and the vent pipe must not extend more th...

Страница 24: ...piping through the wall into the vent plate openings Use RTV silicone sealant to seal the air pipe Use the cement primer listed in Table 3D on page 19 to seal the vent pipe 4 Mount and secure the ven...

Страница 25: ...regard to spacing from adjacent boiler vents WARNING Figure 4 5B Alternate Multiple Vent Terminations w Field Supplied Fittings must also comply with Figure 4 1B Prepare wall penetrations Alternate F...

Страница 26: ...installations 4 inch diameter for CVK3008 or 7 inch diameter for CVK3007 installations into the structure to install the termination kit 4 Partially assemble the concentric vent termination kit Clean...

Страница 27: ...tructure s hole Do not allow insulation or other materials to accumulate inside the pipe assembly when installing through the hole 6 Install the rain cap and small diameter pipe assembly into the Y co...

Страница 28: ...It is important that vent terminations be made as shown to avoid recirculation of flue gases VENT COMBUSTION AIR 12 MINIMUM Figure 4 13 Concentric Vent and Combustion Air Termination Figure 4 12 Conc...

Страница 29: ...return pipe no further than 2 feet from the center of the vent pipe This placement avoids recirculation of flue products into the combustion air stream 5 The vent piping must terminate in an up turned...

Страница 30: ...ENT PIPE FROM ANOTHER BOILER Figure 5 2 Vertical Terminations with Multiple Boilers Figure 5 3 Alternate Vertical Terminations with Multiple Boilers WARNING Vertical termination optional concentric ve...

Страница 31: ...of surface or anticipated snow level 12 inches in U S A or 18 inches in Canada as shown in FIG 5 4 page 30 If assembly is too short to meet height requirement the two 2 pipes supplied in the kit may b...

Страница 32: ...combustion air routing Concentric Venting Arrangement The venting is to be vertical through the roof The annular space between the O D of the vent pipe and the I D of the existing unused venting syst...

Страница 33: ...ng with illustrations on the following pages FIG s 6 3 through 6 12 which will guide you through the installation of the Knight wall mount boiler reference FIG s 6 1A and 6 1B 1 Connect the system ret...

Страница 34: ...t 10 Pressure relief valve Factory supplied The pressure relief valve is sized to ASME specifications 11 Boiler purge valve Factory supplied The boiler purge valve is used to remove entrapped air from...

Страница 35: ...SYSTEM PUMP LOW LOSS HEADER TYPICAL CONDENSATE DRAIN INDIRECT DOMESTIC HOT WATER TANK Y STRAINER RECOMMENDED DRAIN VALVE BOILER PUMP FILL VALVE EXPANSION TANK TO SYSTEM FROM SYSTEM FROM TO DOMESTIC HO...

Страница 36: ...tor Recommendations for Temperature Rise Applications_20 25 and 35 25 F Temperature Rise Applications Model GPM FT HD Minimum Pipe Size Pump Grundfos TACO B G Armstrong 55 4 0 17 1 UPS 15 58FC 1 007 N...

Страница 37: ...rmer day or greater heat loss from a structure then the GPM should change to match the required BTU hr This is achieved when the variable speed circulators automatically and continually adjust their G...

Страница 38: ...VE DRAIN POINT TYPICAL MAKE UP WATER FROM SYSTEM NOT TO EXCEED 4 PIPE DIA OR MAX OF 12 APART BOILER CIRCULATOR SYSTEM CIRCULATOR TO SYSTEM SYSTEM SUPPLY SENSOR DRAIN MAY SUBSTITUTE LOW LOSS HEADER Y S...

Страница 39: ...EXPANSION TANK ZONE VALVES TYPICAL FLOW CHECK VALVE DIFFERENTIAL PRESSURE BYPASS VALVE RECOMMENDED SYSTEM CIRCULATOR SYSTEM SUPPLY SENSOR DRAIN Y STRAINER RECOMMENDED MAY SUBSTITUTE LOW LOSS HEADER NO...

Страница 40: ...AKE UP WATER HOT WATER OUT ZONE CIRCULATORS TYPICAL FLOW CHECK VALVE TYPICAL BOILER CIRCULATOR SYSTEM SUPPLY SENSOR PRESSURE RELIEF VALVE Y STRAINER RECOMMENDED MAY SUBSTITUTE LOW LOSS HEADER NOT TO E...

Страница 41: ...LATOR DRAIN Y STRAINER RECOMMENDED TYPICAL MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA OR MAX OF 12 APART ZONE 1 ZONE 2 ZONE 3 ZONE 4 Figure 6 6 Multiple Boilers Single Temperature Zoned w...

Страница 42: ...N BOILER 1 LEADER SYSTEM SUPPLY SENSOR TEMPERATURE PRESSURE GAUGE DRAIN Y STRAINER RECOMMENDED TYPICAL MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA OR MAX OF 12 APART ZONE 1 ZONE 2 ZONE 3 Z...

Страница 43: ...DRAIN Y STRAINER RECOMMENDED MAY SUBSTITUTE LOW LOSS HEADER TEMPERATURE LOOP 1 TEMPERATURE LOOP 2 TEMPERATURE LOOP 3 NOT TO EXCEED 4 PIPE DIA OR MAX OF 12 APART PRESSURE RELIEF VALVE SHIELDED CABLE TO...

Страница 44: ...IELDED CABLE TO BOILER CONTROL 24V SIGNAL TO MIXING VALVES 120VAC TO PUMPS WIRES TO LOOP SENSORS MULTI TEMP TO LOOP CONTROL IMG00191 Figure 6 9 Multiple Boilers Multiple Temperature DHW Piped as a Zon...

Страница 45: ...D SYSTEM SUPPLY SENSOR DRAIN Y STRAINER RECOMMENDED ZONE 1 ZONE 2 ZONE 3 ZONE 4 Figure 6 10 Single Boiler Full Flow Single Temperature Zoned with Zone Valves DHW Priority 6 Hydronic piping continued P...

Страница 46: ...R RECOMMENDED BOILER CIRCULATOR ZONE 1 ZONE 2 ZONE 3 ZONE 4 Figure 6 11 Single Boiler Full Flow Single Temperature Zoned with Valves DHW Piped as a Zone 6 Hydronic piping Please note that these illust...

Страница 47: ...ED BALL VALVE TYPICAL ZONE 1 ZONE 2 ZONE 3 ZONE 4 Figure 6 12 Single Boiler Full Flow Single Temperature Zoned with Circulators DHW Piped as a Zone 6 Hydronic piping continued Please note that these i...

Страница 48: ...property damage 3 Purge all air from the gas supply piping 4 Before placing the boiler in operation check the boiler and its gas connection for leaks a Close manual main shutoff valve during any press...

Страница 49: ...anadian installations Natural gas supply pressure requirements 1 Pressure required at the gas valve inlet pressure port Maximum 14 inches w c with no flow lockup or with boiler on Minimum 4 inches w c...

Страница 50: ...the gas piping to the appliance WARNING 3 Loosen the set screw one 1 full turn from inside the pressure tap on top of the gas valve Place the tubing of the manometer over the tap once the set screw i...

Страница 51: ...in line regulator is used it must be a minimum of 10 feet from the Knight wall mount boiler It is very important that the gas line is properly purged by the gas supplier or utility company Failure to...

Страница 52: ...vate a system pump wire as shown in FIG 8 2 If the motor is larger than 1 8 hp or 1 8 amps you must isolate with a relay Figure 8 2 Line Voltage Field Wiring Connections Label all wires prior to disco...

Страница 53: ...nstalling a tank sensor the SMART SYSTEM control can perform the tank thermostat function The SMART SYSTEM control automatically detects the presence of this sensor and generates a DHW call for heat w...

Страница 54: ...mmed reset curve parameters If the outdoor air sensor is not connected the Leader control will maintain the fixed water temperature set point that is programmed into the control If a Thermostat Zone C...

Страница 55: ...3 SYSTEM SUPPLY SENSOR BUILDING MANAGEMENT SYSTEM LOW WATER CUTOFF OUTDOOR SENSOR TANK SENSOR SHIELD SHIELD TO NEXT BOILER A B A B FROM PREVIOUS BOILER NOTE CONNECTION BOARD SPLIT FOR ILLUSTRATION PU...

Страница 56: ...with ASME D2564 or F493 For Canada use CSA or ULC certified PVC or CPVC pipe fittings and cement 6 A condensate removal pump is required if the boiler is below the drain When installing a condensate p...

Страница 57: ...in valve and manual air vent 3 Fill to correct system pressure Correct pressure will vary with each application a The minimum cold water fill pressure for a residential system is 12 psi b Pressure wil...

Страница 58: ...enough water to make the ball float FIG 10 1 3 Loosen compression fitting FIG 10 1 4 Slide condensate trap onto condensate drain at the bottom of the unit 5 Tighten compression fitting The condensate...

Страница 59: ...ck for gas tight seal at every connection seam of air piping and vent piping Venting system must be sealed gas tight to prevent flue gas spillage and carbon monoxide emissions which will result in sev...

Страница 60: ...60 Installation Operation Manual 10 Start up o Figure 10 2 Operating Instructions Models 55 285...

Страница 61: ...Installation Operation Manual 61 10 Start up continued Figure 10 3 Operating Instructions Model 399...

Страница 62: ...on the system pump If the boiler is not heating an indirect DHW Domestic Hot Water tank and the set point is not met it also turns on the boiler pump After the space heating call for heat ends the sys...

Страница 63: ...the NAVIGATION dial to adjust the date Press the NAVIGATION dial 10 Turn the NAVIGATION dial to adjust the year Press the RIGHT SELECT SAVE key 11 Press the RIGHT SELECT HOME key Please note that the...

Страница 64: ...ART SYSTEM control allows the connection of a DHW thermostat or tank sensor to the low voltage connection board When a tank sensor is connected the DHW thermostat input is ignored When a boiler is pro...

Страница 65: ...s the control will increase the firing rate when the flame signal drops too low Protection features Outlet temperature flue temperature and temperature rise limiting The outlet temperature is monitore...

Страница 66: ...n under Outdoor Reset Operation and Target Temperature Boost when the outdoor sensor is connected High limit operations The Knight wall mount is equipped with adjustable automatic reset and manual res...

Страница 67: ...riority for the rest of that 24 hour period Cascade When multiple boilers are installed they can be wired together in a cascade sequence A maximum of eight boilers can be controlled from a single cont...

Страница 68: ...tch and blocked drain switch must close 4 The control starts the prepurge cycle by initiating the blower 5 The control starts the trial for ignition by firing the spark electrode and opening the gas v...

Страница 69: ...e space heating call for heat is active and the tank thermostat or sensor starts a DHW call for heat the boiler will switch to the DHW mode If programmed for normal DHW operation not as a zone the DHW...

Страница 70: ...nel FIG 11 1 to set temperatures operating conditions and monitor boiler operation 11 Operating information The information on the bottom of the display shows the functions of the two SELECT keys on e...

Страница 71: ...tional postpurge period to clear the combustion chamber and vent system of residual flue products SHUTDOWN The unit has been placed in the OFF position SETPOINT MET The controlled temperature has exce...

Страница 72: ...ured by the flame sense circuit FAN SPEED The speed of the combustion blower BOILER PUMP The status of the boiler pump output SYSTEM PUMP The status of the system pump output DHW PUMP The status of th...

Страница 73: ...Setback Skip Screen E NAVIGATION Dial Function Turning the NAVIGATION dial will select the next or previous Status Screen Pressing the NAVIGATION dial will show the next fault NSB Night Setback trigg...

Страница 74: ...anual Flame inspection stable uniform Flame signal at least 10 microamps at high fire Clean the heat exchanger if flue temperature is more than 54 F above return water temperature If combustion or per...

Страница 75: ...stalled and connected to the condensate pipe under the boiler see FIG 12 1 2 The condensate line should be inspected monthly for obstructions making sure it allows free flow for condensate to drain 3...

Страница 76: ...following the warning directions in this manual if the relief valve weeps or will not seat properly replace the relief valve Ensure that the reason for relief valve weeping is the valve and not over p...

Страница 77: ...ver and burner 5 Remove the condensate trap from the bottom of the boiler Place a bucket underneath the condensate fitting attached to the heat exchanger 6 Use a vacuum cleaner to remove any accumulat...

Страница 78: ...3 24 30 31 32 33 35 36 37 38 39 40 41 42 43 44 3 4 1 2 ALARM CONTACTS M O D B U S 29 34 CN6 X6 X2 2 NOTES 1 Where possible switches are shown without utilities gas water or electricity connected to th...

Страница 79: ...st be replaced it must be replaced with wire having same wire gauge AWG and rated for a minimum of 105 C Exceptions Replacement high vo ltage spark lead and ribbon cables must be purchased from the fa...

Страница 80: ...humidity warning on page 7 along with updates made to the SMART SYSTEM control ECR R04523 Revision E ECO C09803 reflects the addition of the new Polypropylene Vent material section rearranging the ve...

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