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OKB-I-O Rev C
Outdoor Knight Boiler
Installation & Operation
Manual
Models: 151 - 286
This manual must only be used by
WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual and the
Outdoor Knight Boiler Service
Manual, before installing. Perform
steps in the order given. Failure
to comply could result in severe
personal injury, death, or substantial
property damage.
Save this manual for future reference.
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Contents HAZARD DEFINITIONS .................................................... 2 5. FIELD WIRING PLEASE READ BEFORE PROCEEDING ........................ 3 Line Voltage Connections ................................................ 28 THE OUTDOOR KNIGHT BOILER -- HOW IT WORKS 4-6 Low Voltage Connections ................................................ 28 RATINGS ........................................................................... 7 Wiring of the Cascade ..................................
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Outdoor Knight Boiler Installation & Operation Manual Please read before proceeding Installer – Read all instructions, including When servicing boiler – WARNING this manual and the Outdoor Knight � To avoid electric shock, disconnect electrical supply Boiler Service Manual, before installing. before performing maintenance. Perform steps in the order given. User – This manual is for use only � To avoid severe burns, allow boiler to cool before by a qualified heating installer/ per
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Outdoor Knight Boiler Installation & Operation Manual The Outdoor Knight Boiler - How it works... 1. Stainless steel heat exchanger 17. Manual air vent Allows system water to flow through specially designed Designed to remove trapped air from the heat exchanger coils for maximum heat transfer, while providing coils. protection against flue gas corrosion. The coils are 18. High voltage junction box encased in a jacket that contains the combustion process. The junction box contains
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Outdoor Knight Boiler Installation & Operation Manual The Outdoor Knight Boiler - How it works... (continued) Models 151 - 211 21 30 29 31 10 23 24 IMG00366 11 6 IMG00365 IMG00365 38 Front View - Models 151 - 211 Rear View - Models 151 - 211 18 20 39 16 33 15 7 35 34 8 10 3 14 4 25 5 1 27 36 17 2 28 13 26 19 1 32 22 IMG00368 IMG00367 Right Side (inside unit) - Models 151 - 211 Left Side (inside unit) - Models 151 - 211 5
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Outdoor Knight Boiler Installation & Operation Manual The Outdoor Knight Boiler - How it works... 29 Model 286 38 21 30 39 31 15 10 37 23 24 IMG00380 6 IMG00379 11 Rear View - Model 286 Front View - Model 286 34 18 20 10 33 16 4 15 5 36 8 3 14 25 27 28 1 13 2 17 19 32 IMG00381 IMG00382 22 Left Side (inside unit) - Model 286 Right Side (inside unit) - Model 286 6
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Outdoor Knight Boiler Installation & Operation Manual Ratings A S M E H Outdoor Knight Boiler Other Specifications AHRI Rating Heating Input AFUE Net Capacity % MBH Model Number AHRI MBH Boiler Ratings Air Water Water Gas Water, Size Content Connections Connections MBH (Note 4) Note: Change “N” to Gallons “L” for L.P. gas models.
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Outdoor Knight Boiler Installation & Operation Manual 1 Determine boiler location Installation must comply with: Do not locate unit so that high winds can CAUTION deflect off of adjacent walls, buildings � Local, state, provincial, and national codes, laws, or shrubbery causing recirculation. regulations, and ordinances. Recirculation of flue products may cause operational problems, bad combustion or � National Fuel Gas Code, ANSI Z223.1 – latest edition. damage to controls. Loc
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Outdoor Knight Boiler Installation & Operation Manual 1 Determine boiler location (continued) Flooring and foundation Provide clearances: Clearances from combustible materials Flooring 1. Hot water pipes—at least 1/4" (6 mm) from combustible The Outdoor Knight is approved for installation on combustible materials. flooring. 2. Vent pipes—minimum of 14" (356mm) from the rear and Do not install the boiler on carpeting even if WARNING 0" on the right side from combustible materials. fo
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Outdoor Knight Boiler Installation & Operation Manual 2 Prepare boiler Remove boiler from wood pallet Figure 2-2 Install Flue Pipe Assembly 1. After removing the outer shipping carton from the boiler, WALL STRAP SCREWS remove the installation kit. BIRD SCREEN WALL STRAP 2. Remove the front access covers to access the lag bolts in front of the unit (FIG. 2-1). 3. To remove the boiler from the pallet (after removing the front access covers): a. Remove the two lag bolts from the wood palle
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Outdoor Knight Boiler Installation & Operation Manual 2 Prepare boiler (continued) 5. After installation is complete, attach the propane Leveling the boiler conversion label (in the conversion kit bag) next to the 1. Set the boiler in place and check level. boiler rating plate. Attach the LP caution label (in the a) Adjust legs if necessary to level boiler, see FIG. 2-4 conversion kit bag) to the left side of the unit in the below. lower left corner. Figure 2-4 Leveling Legs on th
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping System water piping methods General piping information The outdoor boiler is designed to function in a closed loop Basic steps are listed in this section along with illustrations on pressurized system not less than 12 psi. A temperature and the following pages (FIG.’s 3-4 thru 3-10), which will guide you pressure gauge is included to monitor system pressure and through the installation of the outdoor boiler (refere
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping (continued) The relief valve, tee and any necessary fittings Near boiler piping components WARNING are shipped in the install kit with the boiler 1. Boiler system piping: and are to be field installed (FIG. 3-1). Boiler system piping MUST be sized per the pipe requirements listed in Table 3A. Reducing the pipe size *See the piping illustrations included in this section, FIG.’s 3-4 can restrict the flow rate
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping 12. System temperature sensor: Lochinvar offers the Squire which is a series of indirect Lochinvar supplies a system temperature sensor. water heaters. The Squire features a stainless steel vessel The sensor is to be installed in the heating loop with a single wall stainless steel heat exchanger. downstream from the boiler hot water piping and It is up to the installer to ensure the heating loop junction.
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping (continued) Figure 3-3 Pressure Drop vs. Flow Pressure Drop vs. Flow (Includes Secondary Piping) 25 20 15 151 211 10 286 5 0 3 4 5 6 7 8 9 10 11121314 151617 181920 212223 2425 Flow Rate (GPM) Table 3A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35° 20°F Temperature Rise Applications Pump Minimum Pipe Model GPM FT/HD Size Grundfos TACO B & G Armstrong 151 14 20 1" UPS26-99F 0011 NRF-36
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping Variable speed pump option Table 3B Recommended Variable Speed Pumps Minimum Temperature Rise* Pump Model Grundfos TACO Wilo UP26-96 FC/VS 0013 IFC VS Stratos 1.25 3 x 30 151 21 20 19 211 27 25 24 286 27 24 22 *The minimum temperature rise is derived from the chart in FIG. 3-3 with the firing rate and pump speed at 100% as shown in the table above. The shaded regions of pump coverage are only available for applicati
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping (continued) Figure 3-4 Single Boiler - Single Temperature Zoned with Circulators ZONE #1 PRESSURE PRESSURE GAUGE REDUCING VALVE ZONE #2 ZONE #3 ZONE #4 BACKFLOW FLOW CHECK PREVENTER VALVE (TYPICAL) MAKE UP WATER SYSTEM SUPPLY SENSOR ZONE CIRCULATORS (WHEN USED) (TYPICAL) AIR SEPARATOR EXPANSION TANK MAY SUBSTITUTE LOW LOSS HEADER BALL VALVE (TYPICAL) Y-STRAINER DRAIN POINT (RECOMMENDED) (TYPICAL) BOILER HOT CIRCULA
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping Figure 3-5 Multiple Boilers - Single Temperature Zoned with Circulators Number of Units Model2 345678 Required Pipe Sizes 151 2" 2" 2-1/2" 2-1/2" 3" 3" 3-1/2" 211 2" 2-1/2" 3" 3" 3-1/2" 4" 4" 286 2-1/2" 2-1/2" 3" 3-1/2" 3-1/2" 4" 5" ZONE #1 PRESSURE REDUCING VALVE PRESSURE ZONE #2 ZONE #3 ZONE #4 GAUGE BACKFLOW PREVENTER FLOW CHECK VALVE SYSTEM SUPPLY MAKE UP WATER (TYPICAL) SENSOR AIR SEPARATOR ZONE CIRCULATORS (TYPI
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping (continued) Figure 3-6 Single Boiler - Multiple Temperatures PRESSURE TEMPERATURE TEMPERATURE TEMPERATURE REDUCING VALVE LOOP #1 LOOP #2 LOOP #3 WIRES TO LOOP SENSORS BACKFLOW PREVENTER PRESSURE GAUGE MAKE UP SYSTEM WATER MIXING VALVES SUPPLY (TYPICAL) SENSOR AIR SEPARATOR EXPANSION TANK MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART 120VAC TO PUMPS BALL VALVE (TYPICAL) 24V SIGNALTO
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Outdoor Knight Boiler Installation & Operation Manual 3 Hydronic piping Figure 3-7 Multiple Boilers - Multiple Temperatures Number of Units Model 2 345678 Required Pipe Sizes 151 2" 2" 2-1/2" 2-1/2" 3" 3" 3-1/2" 211 2" 2-1/2" 3" 3" 3-1/2" 4" 4" 286 2-1/2" 2-1/2" 3" 3-1/2" 3-1/2" 4" 5" WIRES TO LOOP SENSORS PRESSURE TEMPERATURE TEMPERATURE TEMPERATURE REDUCING VALVE LOOP #1 LOOP #2 LOOP #3 BACKFLOW MIXING VALVES PREVENTER (TYPICAL) PRESSURE GAUGE SYSTEM MAKE SUPPLY UP SENSOR WATER AIR SE
