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Installation and Operation Instructions
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or
death. Improper installation and/or operation will void the warranty.
If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or
loss of life.
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
Installation and service must be performed by
a qualified installer, service agency, or gas supplier.
WARNING
Installation and
Operation Instructions for
Brute
Modulating Boilers and
Volume Water Heaters
Indoor and Outdoor
BNTH
Sizes 399 – 850 MBTU/h
BNTV
Sizes 150 – 850 MBTU/h
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d'incendie ou d'explosion
ou pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d'essence ni d'autres
vapeurs ou liquides inflammables dans le voisinage
de cet appareil ou de tout autre appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d'allumer d'appareils.
• Ne touchez à aucun interrupteur. Ne pas vous servir des
téléphones dansle bâtiment où vous êtes.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le sservice des incendies.
L'installation et l'entretien doivent être assurés par un
installateur ou un service d'entretien qualifié ou par le
fournisseur de gaz.
Document 1344G
®
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Summary of Contents for Bradford White Brute BNTH Series
- Page 1 Installation and Operation Instructions Document 1344G Installation and Operation Instructions for Brute ® Modulating Boilers and Volume Water Heaters Indoor and Outdoor BNTH Sizes 399 – 850 MBTU/h BNTV Sizes 150 – 850 MBTU/h FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler and heater installation and maintenance.
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Page 2: Table Of Contents
RADFORD HITE Table of Contents SECTION 6 SECTION 1 WATER CONNECTIONS GENERAL INFORMATION Boiler ............. 34 Introduction ............5 Warranty ............5 6.A.1 Boiler Water Piping ........34 Model Identification ........... 5 6.A.2 Boiler Cold Water Make-Up ......34 Safety Notes ............. 6 6.A.3 Condensate Drain ........... - Page 3 Brute HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 8 SECTION 9 FIRST START UP AND ADJUSTMENT USING THE TOUCH SCREEN Filling the Boiler System ......... 77 The Touch Screen .......... 53 First Operation ..........78 Using the Touch Screen ......... 53 Shutting Down the Unit ........
- Page 4 RADFORD HITE...
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Page 5: General Information 1.A Introduction
P = LP Gas 1.B Warranty Options Code X = Standard US Bradford White products are covered by a limited J = CSD-1, FM, GAP, (U.S. size 500-850 only) warranty. The owner should complete the warranty C = Standard Canada registration at www.BradfordWhite.com. -
Page 6: D Safety Notes
Page 6 RADFORD HITE 1.D Safety Notes Safety Notes are used throughout this manual to bring attention to the presence of hazards with various risk levels and to off er important information concerning the life of this product. There are 3 basic types. Indicates an imminently hazardous situation which, if not WARNING avoided, can or will result in death or serious injury and can... - Page 7 Brute Page 7 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS WARNING NOTE: All installations must be made in accordance with 1) American National Standard Z223.1/NFPA54-Latest Electrical Shock Hazard Edition “National Fuel Gas Code” or Electrical shock can cause severe injury, death or 2) CSA B149.1 “Natural Gas and Propane Installation property damage.
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Page 8: E Model Overview
Page 8 RADFORD HITE Model Overview Both the indoor and the outdoor models have the These units are offered in both Indoor and Outdoor On/Off switch on the outside of the unit. models for all sizes. Both also have the Rating Plate on the outside panel NOTE: Outdoor Installation of volume water heaters to the right. - Page 9 Brute Page 9 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS EXHAUST VENT CONNECTION PRESSURE RELIEF VALVE GAS CONNECTION WATER INLET WATER OUTLET AIR INLET CONNECTION TOUCHSCREEN AIR PRESSURE SWITCH ON / OFF SWITCH DRAIN VALVE HEAT EXCHANGER GAS VALVE AIR TRANSITION CONDENSATE TRAP AIR/ GAS...
- Page 10 Page 10 RADFORD HITE EXHAUST VENT CONNECTION WATER INLET PRESSURE RELIEF VALVE WATER OUTLET GAS CONNECTION TOUCHSCREEN AIR INLET CONNECTION ON / OFF SWITCH HEAT EXCHANGER MANUAL SHUTOFF DRAIN VALVE GAS VALVE CONDENSATE TRAP AIR/ GAS BLOWER GAS VALVE VENTURI Figure 4.
- Page 11 Brute Page 11 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS EXHAUST VENT CONNECTION WATER INLET GAS CONNECTION WATER OUTLET PRESSURE RELIEF VALVE AIR INLET CONNECTION TOUCHSCREEN AIR PRESSURE SWITCH ON / OFF SWITCH DRAIN VALVE MANUAL SHUTOFF GAS VALVE CONDENSATE TRAP HEAT EXCHANGER AIR/ GAS BLOWER...
- Page 12 Page 12 RADFORD HITE CONNECTION EXHAUST WATER OUTLET VENT AIR INLET WATER INLET RATING PLATE Indoor 150 MBH CONDENSATE TRAP OUTLET For piping dimensions/ (Trap is built-in) locations for all Indoor units, See Table 1 on page 14 GAS CONNECTION AIR INLET WATER OUTLET WATER INLET...
- Page 13 Brute Page 13 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS EXHAUST VENT RATING PLATE AIR INLET FILTER BOX WATER OUTLET Outdoor 150 MBH WATER INLET CONDENSATE TRAP OUTLET (Trap is built-in) For piping dimensions/ CONNECTION locations for all outdoor units, See Table 2 on page 16 PRV must be added to this pipe during installation.
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Page 14: F Dimensions, Indoor Models
Page 14 RADFORD HITE Dimensions, Indoor Models Size in cm 13¼ 34 5¼ 14 18¼ 46 3¼ 8 10¾ 28 7½ 19 14¼ 36 19½ 49 7½ 19 15¼ 39 13 33 20½ 52 5¼ 14 18¼ 46 3¼ 8 17¾... - Page 15 Brute Page 15 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS All Indoor Units have a very (22) (22) similiar component design with piping dimensions/locations that increase as the unit size increases. Water and gas piping is always on the left side of the unit.
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Page 16: G Dimensions, Outdoor Models
Page 16 RADFORD HITE 1.G Dimensions, Outdoor Models SIZE 6-1/4" 16 11" 13" 17-1/4" 43.8 23-1/2" 60 18" 45.7 27" 23-1/2" 60 5-1/4" 13 6-1/4" 16 11" 13" 17-1/4" 43.8 23-1/2" 60 18" 45.7 27" 24-1/2" 60 5-1/4" 13 6" 11"... - Page 17 Brute Page 17 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Ø L (Length) T (Total Length) VENT SIZE 7" 23-1/2" 60 5-1/4" 13 6-1/4" 16 11" 20" 13" 25-1/2" 65 17-1/4" 43.8 23-1/2" 60 18" 45.7 27" 23-1/2" 60 5-1/4" 13 7" 24-1/2"...
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Page 18: H The Installation Kit (Installation Parts Box)
Page 18 RADFORD HITE 1.H The Installation Kit ( installation parts box The Indoor models are shipped in a single crate with the Installation Kit (cardboard box). Check the contents of the Installation Kit with the items listed in Figure 10 and Figure 11. Additional parts may be packed inside the unit. Some accessory items may be shipped in separate packages. - Page 19 Brute Page 19 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS The OUTDOOR Model Installation Kits, in addition to what is shown in Figure 10 and Figure 11, will include: Vent Pipe Extender, Pipe Adapter, NOTE: Outdoor Installation of this Bird Screen, volume water heater is not PRV,...
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Page 20: Locating The Unit
Page 20 RADFORD HITE SECTION 2 LOCATING THE UNIT 2.A General Information 2.B Locating Appliance for Correct Vent Distance from Outside Wall or Roof The ‘Indoor’ unit is designed and CSA-certified for indoor installations only. Termination The ‘Outdoor’ unit is designed and CSA-certified for The forced draft combustion air blower in the appliance outdoor installations only. -
Page 21: Venting And Combustion Air 3.A General Venting
Brute Page 21 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS INTAKE / EXHAUST STANDARD MIN EQUIV. INTAKE MIN EQUIV. VENT MAX EQUIV. OPTIONAL MAX EQUIV. SIZE VENT VENT 3” * — — 30.5 3” * — — 30.5 4” * 30.5 —... - Page 22 Page 22 RADFORD HITE Combustion Air From Room In the United States, When communicating to the outdoors through horizontal the most common requirements specify that the space ducts, each opening shall have a minimum free area shall communicate with the outdoors in accordance of not less than 1 square inch per 2000 Btu/hr (1100 with method 1 or 2, which follow.
- Page 23 Brute Page 23 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS air are acceptable, providing they conform to the Use ABS, PVC, CPVC or galvanized pipe for the requirements in the applicable codes listed above. combustion air intake. Route the intake to the boiler as directly as possible.
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Page 24: C Venting
Page 24 RADFORD HITE WARNING WARNING When an existing Cat I appliance is removed or Failure to use polypropylene CPVC or stainless steel replaced, the original venting system may no longer venting for the first 20” (285-600) / 30” (199 / 210) be sized to properly vent the attached appliances. - Page 25 Brute Page 25 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS INSTALLATION STANDARDS MATERIAL UNITED STATES CANADA Stainless Steel UL 1738 Venting must be ULC-S636 certified for use as PVC, sch 40 ANSI/ASTM D1785 venting material. The venting material class must be CPVC, sch 40 ANSI/ASTM F441 chosen based upon the maximum flue gas temperature...
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Page 26: D Common Venting
Page 26 RADFORD HITE 3.D Common Venting High efficiency boilers and water heaters up to Locate the terminal so the vent exhaust does 500 MBTU/H may be common vented using Non-Return not settle on building surfaces or other nearby Valve kits and Centrotherm InnoFlue polypropylene objects. - Page 27 Brute Page 27 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS For concentric vent, follow instructions Installations in the Commonwealth of Massachusetts included with vent kit. In Massachusetts the following items are required if the Multiple vent kits should be installed such that the side-wall exhaust vent termination is less than seven horizontal distance between the outlet group and (7) feet above finished grade in the area of the venting,...
- Page 28 Page 28 RADFORD HITE Canadian Installations 1 U.S. Installations 2 A = Clearance above grade, veranda, porch, deck, or balcony B = Clearance to window or door that may be ● 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW) ●...
- Page 29 Brute Page 29 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 2. Approved Carbon Monoxide Detectors Each carbon monoxide detector shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified. 3. Signage A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for...
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Page 30: F Common Vent Test
Page 30 RADFORD HITE Common Vent Test NOTE: This section does not describe a method for common venting these high efficiency condensing units. It describes what must be done when a unit is removed from a common vent system. These units require special vent systems and fans for common vent. -
Page 31: Gas Supply And Piping
Brute Page 31 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 4 WARNING GAS SUPPLY AND PIPING If an inline high gas pressure regulator is used, it MUST All Installations must conform to the National Fuel BE of the lockup type and located a minimum of 10 feet Gas Code ANSI Z223.1/NFPA54, and/or local codes. -
Page 32: Pump Requirements
Page 32 RADFORD HITE 4 Gas Supply and Piping (continued) EQUIVALENT LENGTHS OF STRAIGHT PIPE FOR TYPICAL SCH 40 FITTINGS SCHED 40 METAL PIPE CAPACITY FOR 1.50 SPECIFIC GRAVITY UNDILUTED PROPANE NOMINAL PIPE SIZE NOMINAL PIPE SIZE 11” W.C. INLET AND 0.5” W.C. PRESSURE DROP 1/2”... - Page 33 75.9 48.3 58.0 30.5 46.0 20.6 38.0 14.9 33.0 11.7 29.0 95.0 64.5 72.0 38.0 58.0 25.0 48.0 17.5 41.0 13.0 36.0 10.1 Brute 108.0 56.6 81.0 34.8 65.0 23.9 54.0 17.4 46.0 13.3 41.0 Page 33 10.9 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Flow Flow Flow...
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Page 34: 6.A Boiler
Page 34 RADFORD HITE SECTION 6 WATER CONNECTIONS - Part A This unit’s efficiency is higher with lower return Section 6 is divided into two parts. Section water temperatures. Therefore, to get the most of low 6A covers Boiler units designed for hydronic return temperature with multiple boilers, pipe as shown in heating. -
Page 35: Condensate Drain
Brute Page 35 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Connect a 3/4” PVC pipe between the drain connection and a floor drain (or a condensate pump if a floor drain between 20% and 35% glycol. Typically, this is not accessible). concentration will serve as burst protection for The condensate drain must be installed so as to prevent temperatures down to approximately -5°F (-20°C). - Page 36 Page 36 RADFORD HITE Figure 22. Hydronic Piping — Single Boiler, Zoning with Circulators...
- Page 37 Brute Page 37 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Figure 23. Hydronic Piping — Single Boiler, Low Temp Radiant Space Heating Using Low Loss Header and Zone Valves...
- Page 38 Page 38 RADFORD HITE Figure 24. Hydronic Piping — Multiple Boilers, Zoning with Circulators Figure 25. Hydronic Piping — Multiple Boilers with Indirect DHW Tank Piped from System Loop...
- Page 39 Brute Page 39 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Figure 26. Hydronic Piping — Multiple Boilers, Reverse Return, Multi-Temp Zones, Zoning with Circulators...
- Page 40 Page 40 RADFORD HITE Figure 27. Hydronic Piping — Heating Zones with Indirect DHW Tank Piped with Zone Pumps The indirect DHW tank is piped directly off of the boiler. The boiler pump must shut down during DHW operation.
- Page 41 Brute Page 41 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Figure 28. Hydronic Piping, Multiple Boilers with Indirect DHW Off of One Boiler The boiler pump must shut down during DHW operation.
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Page 42: B Water Heater
Page 42 RADFORD HITE SECTION 6 WATER CONNECTIONS - Part B scale buildup and failure of the heat exchanger. Section 6 is divided into two parts. Section 6A covers Boiler units designed for hydronic heating. Section 6B covers Heater models, 6.B.3 Cold Water Make-Up which are designed exclusively for “volume... -
Page 43: Heater Suggested Pumps
Brute Page 43 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS WARNING: This drawing shows suggested piping configuration and valving. Check with local codes and ordinances for additional requirements. NOTES: 1. Optional CWMU & Recirc. line location. 2. Locate Heater DHW sensor or remote aquastat well in lower 1/3 of tank. - Page 44 Page 44 RADFORD HITE NOTES: 1. Optional CWMU & Recirc. line location. 2. Locate Heater DHW sensor or remote aquastat well in lower 1/3 of tank. 3. Back flow preventer may be required - check local codes. 4. Thermal expansion tank may be required - check local codes.
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Page 45: Installation And Wiring
Brute Page 45 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 7 7.B Main Power Connections INSTALLATION AND WIRING The size of the main power supply should be determined by Table 16 and Table 17 on page 47 These tables indicate the unit’s maximum overcurrent 7.A Installation Warnings protection (MOP) and Minimum Circuit Ampacity (MCA). -
Page 46: Variable Speed Pump Control
Page 46 RADFORD HITE Factory installed resistor Figure 33. Power & Control Panel Layout NOTE: All water heating units are shipped from the factory with a resistor (jumper) between the outdoor sensor terminals (terminals 1 and 2 on TB7). If this resistor is removed, the water heater will not be able to heat water above 140°F. -
Page 47: C Hydronic Heating Using External Modulation Control
Brute Page 47 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 7.C Hydronic Heating Using External Modulation Control About External Control - When the unit is used for hydronic heating with external modulation control, a call for heat must be supplied to the “T-T or Interlock” terminal. -
Page 48: E Lead Lag Connections
Page 48 RADFORD HITE Lead Lag Connections Lead Boiler These units can be connected in a Lead Lag series up to a total of 8 controllers. One as the Lead control and 7 more as the following controllers. See Figure 34. For general info and menu set-up for Lead Lag using your Touchscreen, See Section 8, page 69 ‘About Lead Lag’. -
Page 49: F Building Automation System Connections
Brute Page 49 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Following Boiler COM2 COM2 TO CASCADING TO CASCADING UNITS 3 THRU 8 UNITS 3 THRU 8 Building Automation System Connections These units can be controlled and monitored through the included Modbus ports. -
Page 50: G System Wiring Diagram
Page 50 RADFORD HITE 7.G System Wiring Diagram OPTIONAL SWITCH USED ON SOME MODELS. IF SWITCH IS NOT INSTALLED IN TO J4-10 THIS LOCATION. THE TERMINAL JUMPER VALVE SHOULD BE IN PLACE OR/WH COMMON PRESSURE SWITCH "HOT" TO TB1 PIN2 GY/R GY/BL TO TB2 PIN2... - Page 51 Brute Page 51 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS DISPLAY TOUCH-SCREEN COM 2 COM 1 OPTIONAL SWITCH USED ON SOME MODELS. IF SWITCH BL/GN TO TB3-1 IS NOT INSTALLED IN TO TB4-1 THIS LOCATION. THE Y/GN PRESSURE TERMINAL JUMPER SWITCH SHOULD BE IN PLACE BOILER...
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Page 52: H Ladder Diagram
Page 52 RADFORD HITE 7.H Ladder Diagram Figure 36. Ladder Diagram... -
Page 53: Using The Touch Screen
Brute Page 53 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 8 USING THE TOUCH SCREEN The home screen shows a picture of the unit’s controller. The color of the controller depends on the status, as shown below. Color Status Control The Touch Screen... -
Page 54: C Login (Required For Some Parameters)
Page 54 RADFORD HITE Screen Menu Icons to go through an additional “verification” process. For more information, see the section on “Configuration.”) When a password is necessary, the system will present the keyboard screen. See Menu 3. There are several icons at the top of the Touch Screen Menus (and most of the other screens) that will help you move around the system: Home... -
Page 55: D Verification Process For Safety-Related Parameters
Brute Page 55 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS information on logging in, see Section 8.2.) and asterisks will help you enter the correct number of characters for your password. When changing a numerical value, the system If you make a change in any group that could presents a numerical entry screen, as shown below. -
Page 56: E Checking Individual Parameters
Page 56 RADFORD HITE The system will present a listing for each group Checking Individual Parameters of parameters that need verification See Menu 7. From the ‘Home’ screen (Menu 9), press the icon for the controller. Menu 7. Safety Parameter Confirmation Menu 9. -
Page 57: F Setting The Date And Time
Brute Page 57 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Setting the Date and Time on the System Display The display includes an internal clock, which keeps track of the date and time. This setting is important, because log entries for Lockouts and Alerts include time listings. -
Page 58: G The Configuration Menu
Page 58 RADFORD HITE 8.G The Configuration Menu is the gateway to the parameters that the factory, the installer, or the end user will need in order to setup, service, maintain, or adjust the unit. 8.G.1 There are eighteen (18) items in the Configuration 8.G.2 Menu that can be viewed. -
Page 59: System Identification & Access
Brute Page 59 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS The Configuration Sub-Menus ( 18 ) 1 __ 18 8.G. 8.G.2.b Setting Up 4-20 mA Setpoint The Central Heat Configuration Menu ( ) has three Some of these configurations will require a Login first. sub-menus and each of them can be reached by See Menu 3 on page 54 scrolling left or right thru the arrows on the left and... -
Page 60: Outdoor Reset Configuration
Page 60 RADFORD HITE 8.G.3 Outdoor Reset Configuration Choose S2 (J8-6) 4-20 mA, then press OK At this sub-menu, confirm that Central Heat is Enabled. Next, press onto the Maximum Outdoor Temperature, Minimum Outdoor Temperature, and Low Water Then scroll over to the Modulation sub-menu and Temperature to get to each and adjusting their setpoints in click onto Modulation rate source. -
Page 61: Demand Priority Configuration
Brute Page 61 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.G.6 Demand Priority Configuration fed by 120V (violet wire) internally from the main power feed. The System and DHW contacts are dry contacts. Appropriate voltage must be supplied to the System and DHW pumps for proper operation. -
Page 62: Statistics Configuration
Page 62 RADFORD HITE 8.G.9 Statistics Configuration 8.G.12 Anti-Condensation Configuration Anti-condensation (frost protection) is enabled/disabled on this screen The statistics configuration sub-menu allows the installer to view Burner Cycles, Burner Run Time, DHW Pump Cycles, Boiler Pump Cycles, and System Pump Cycles. -
Page 63: Fan Configuration
Brute Page 63 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.G.15 Fan Configuration To increase/decrease the speed at which the fan control loop reacts to a decrease in fan speed, adjust the Fan gain down parameter. Similarly, to increase/decrease the speed at which the fan control loop reacts to an increase in fan speed, adjust the Fan gain up parameter. -
Page 64: Lead Lag Follower Configuration
Page 64 RADFORD HITE 8.G.17 Lead Lag Follower Configuration Note: The system sensor and outdoor sensor will need to be wired to the Master boiler only. The input from these sensors is used by the Master control to control the modulation rate of all the operating boilers it is connected to. - Page 65 Brute Page 65 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.G.17 Lead Lag Follower Config (continued) Return to the configuration menu by pressing the Then you will need to confirm that the Follower Enabled. Back arrow. Next, you will need to confirm that the configuration is Disabled.
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Page 66: Lead Lag Leader Configuration
Page 66 RADFORD HITE 8.G.18 Lead Lag Leader Configuration Wiring Connections for Lead Lag - The controller in each boiler includes two wiring terminals for the Modbus system, labeled “MB1” and “MB2.” MB1 has the wiring connections to the User Interface display on each unit, and MB2 is used to communicate with the other boilers in the Lead Lag system. - Page 67 Brute Page 67 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.G.18 Lead Lag Leader Config (continued) With the Master Control now Enable, press the setting From the ‘Warm Weather Shutdown’ screen, adjust the box labeled ‘CH setpoint’. Here you can adjust the setpoint.
- Page 68 Page 68 RADFORD HITE 8.G.18 Lead Lag Leader Config (continued) Press ‘Disabled’’ Note: In the Lead Lag Follower Sub-Menu, Identify each control (including the Lead Lag Master) as a Follower by turning on ‘Follower Enable. From the Status Summary Screen, press the ‘Config- ure’...
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Page 69: G.18.A About Lead Lag Operation
Brute Page 69 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.G.18.a About Lead Lag Operation Caution You can cascade up to eight You should set the Modbus addresses before (150 - 850 MBH) boilers or water heaters. you connect the Modbus wiring. If the wiring is attached before the Modbus addresses on the controls are changed, there will be multiple For wiring connections to Lead Lag,... - Page 70 Page 70 RADFORD HITE Touch Screen Lead Lag Addr Addr Addr Addr Addr Addr Addr Addr Master Boiler 1 Boiler 2 Boiler 3 Boiler 4 Boiler 5 Boiler 6 Boiler 7 Boiler 8 Figure 41. “ Lead Lag” Operation in a System with Eight Boilers. Note: The Displays on Boilers 2 through 8 will display information pertaining only to that specific boiler.
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Page 71: H Configure For A Building Automation System
Brute Page 71 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 8.H Configure for a Building Automation System These units can be controlled and monitored through the included Modbus ports. If communication protocols are desired, manufacturer offers the Gateway Control to allow BACnet, LON, and other communications protocols. -
Page 72: I Combustion Setup
Page 72 RADFORD HITE Combustion Setup In this section, we will explain how to adjust the gas valve so the unit will run efficiently at both the High Fire and Low Fire conditions. Required tools: Screwdrivers, Torx bits, Allen Wrench Set, Combustion Analyzer WARNING Improper adjustment may lead to poor combustion quality, increasing the amount of carbon monoxide... - Page 73 Brute Page 73 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 10. Press ‘Minimum Modulation’ Confirm that the boiler is running and then press ‘Start Test’ 11. Press ‘Start Test’. You will have 5 minutes to adjust Low-Fire CO2. Press ‘Stop Test’ when done. 12.
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Page 74: J Adjusting Co 2
Page 74 RADFORD HITE Adjusting CO These units use 3 different gas valves depending on the the size of the model. All of them have a Hi-Fire and Low-Fire adjustment. See page 74 for models 150-285, See page 75 for models 399-500, and See page 76 for models 600-850. - Page 75 Brute Page 75 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS The Gas Valve in the 399 and 500 is at the front of the unit and can be reached after the front panel is pulled forward and then off. Always be patient with your combustion analyzer when making adjustments to the valve at both Hi-Fire and Low-Fire.
- Page 76 Inlet gas pressure High re CO adjustment (under cap) Page 76 RADFORD HITE pressure The Gas Valve in the 600 is at the front of Low re CO the unit and can be reached after the front adjustment panel is pulled forward and then off. Outlet gas pressure 750, 850...
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Page 77: First Start Up And Adjustment 9.A Filling The Boiler System
Brute Page 77 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 9 FIRST START UP AND Shut down the entire system and vent all radiation ADJUSTMENT units and high points in the system piping, as 9.A Filling the Boiler System described in Step 4. -
Page 78: B First Operation
Page 78 RADFORD HITE 9.B First Operation the gas is off. The ignition control will lockout after a single try or a third try depending on the controller Caution model. The initial setup must be checked before the unit is •... -
Page 79: A System Maintenance
Brute Page 79 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SECTION 10 MAINTENANCE Caution WARNING Label all wires prior to disconnection when servicing Disconnect all power to the appliance before controls. Wiring errors can cause improper and danger- attempting any service. Contact with electricity can ous operation. - Page 80 Page 80 RADFORD HITE to the gas valve. Remove the electrical connections to the gas valve. Remove the bolts connecting the Venturi flange to the blower. This allows the entire gas valve and Venturi assembly to be removed to facilitate inspection and cleaning.
- Page 81 Brute Page 81 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS gas valves to the appliance. Remove the front door to The transformer is mounted underneath the control the appliance and the plastic bezel and the control panel. panel. If the transformer must be replaced, turn off the Remove all wire connections from the control board.
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Page 82: C Battery Backup For Date & Time
Page 82 RADFORD HITE Optional Gas Pressure Switches WARNING The high and low gas pressure switches are 24V Failure to rinse the debris from the heat exchanger manual reset switches that act to cut power to the gas and temporary drain line may lead to clogged valves if the gas pressure is too low or too high for condensate lines, traps and neutralizers. -
Page 83: D Gas Conversion
Brute Page 83 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 10.D Gas Conversion These units can easily be converted from natural to propane gas or from propane to natural gas in the field. Some units require the addition of a gas orifice along with proper gas valve adjustment. -
Page 84: Troubleshooting
Page 84 RADFORD HITE Section 11 TROUBLESHOOTING Lockout will appear in an orange bar across the bottom of the screen. If you tap the orange bar, 11.A Lockouts, Holds, and Alerts the system will present more information about The control system responds to three kinds of the Lockout. - Page 85 Brute Page 85 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 3. Press the long Yellow Alert or Yellow Lockout Bar If you choose ‘LOCKOUTS’, this menu will appear. (the long bar will be a long Grey ‘History’ Bar if not currently in Alert or Lockout).
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Page 86: B Troubleshooting Table
Page 86 RADFORD HITE 11.B Troubleshooting Table This table includes a listing of the fault codes that may be displayed. Some of these can be corrected by changing a parameter, while other conditions are more complicated, and will require a service technician. The fi... - Page 87 Brute Page 87 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Code Description Lockout Procedure or Hold Internal fault: Safety relay test failed due to safety relay OFF Internal fault: Safety relay test failed due to Internal fault safety relay not OFF 1.
- Page 88 Page 88 RADFORD HITE Code Description Lockout Procedure or Hold 24 VAC voltage low/high 1. Check the module and display connections. 2. Check the module power supply and make sure that frequency, voltage and VA meet the specifi cations. Modulation fault Internal sub-system fault.
- Page 89 Brute Page 89 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Code Description Lockout Procedure or Hold PII (Pre-Ignition Interlock) OFF H or L 1. Check wiring and correct any faults. 2. Check Preignition Interlock switches to assure proper functioning. 3.
- Page 90 Page 90 RADFORD HITE Code Description Lockout Procedure or Hold Outlet sensor fault 1. Check wiring and correct any possible errors. 2. Replace the Outlet sensor. 3. If previous steps are correct and fault persists, replace the module. DHW (Domestic Hot Water) 1.
- Page 91 Brute Page 91 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Code Description Lockout Procedure or Hold Flame lost in MFEP 1. Check main valve wiring and operation - correct any errors. 2. Check the fuel supply. Flame lost early in run 3.
- Page 92 Page 92 RADFORD HITE Code Description Lockout Procedure or Hold Purge fan switch OFF H or L 1. Purge fan switch is off when it should be on. 2. Check wiring and correct any errors. 3. Inspect the Purge Fan switch J6 terminal 3 and its connections.
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Page 93: C Diagnostic Tests And Input/Output Indicators
Brute Page 93 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 11.C Diagnostic Tests and Input/ Output Indicators Two kinds of screens are grouped together in this section: • Detailed indications of the input and output signals • Diagnostic tests of the pumps and burner modulation Note that these functions apply to just one selected controller. -
Page 94: E Statistics
Page 94 RADFORD HITE 11.D Lead/Lag Slave Diagnostics The control system includes a diagnostic screen that lists some information on the Lead/Lag slaves in the system. See Menu 13 Menu 15. Analysis Setup Screen To use this function, select the parameter you want to track from the pull-down list. -
Page 95: D Lead Lag Follower Diagnostics
Brute Page 95 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS 11.H Operating Sequence Select one of the controllers listed on the right side When there is a call for heat, the unit will close pump of the screen. Press one of the buttons below the contacts to energize the customer supplied relay/ right column to see the snapshot. -
Page 96: Replacement Parts
Page 96 RADFORD HITE Section 12 - REPLACEMENT PARTS Use only genuine replacement parts. 12.A General Information To order or purchase parts, contact your nearest manufacturer’s dealer or distributor. If they cannot supply you with what you need, contact Customer Service. (See the back cover for the address, telephone and fax numbers.) 12.B Parts List SIZE... - Page 97 Brute Page 97 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS SIZE SIZE SIZE SIZE SIZE SIZE SIZE SIZE ITEM DESCRIPTION BOILER 399 BOILER 500 BOILER 600 BOILER 750 BOILER 850 HEATER 150 HEATER 199 HEATER 285 HEATER 399 HEATER 500 HEATER 600 HEATER 750 HEATER 850...
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Page 98: Parts Illustrations
Page 98 RADFORD HITE SIZE SIZE SIZE SIZE SIZE SIZE SIZE SIZE ITEM DESCRIPTION BOILER 399 BOILER 500 BOILER 600 BOILER 750 BOILER 850 HEATER 150 HEATER 199 HEATER 285 HEATER 399 HEATER 500 HEATER 600 HEATER 750 HEATER 850 73 Flame Sensor w/gasket R2069200 R2069200 R2069200... - Page 99 Brute Page 99 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Parts Illustration 2. Internal Components, Parts Illustration 3. Internal Components, Sizes 150–199 Sizes 285–600...
- Page 100 Page 100 RADFORD HITE Parts Illustration 4. Internal Components, Sizes 750-850...
- Page 101 Brute Page 101 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Sizes 150-285 Parts Illustration 5. Gas Train Components, Sizes 150-500...
- Page 102 Page 102 RADFORD HITE Parts Illustration 6. Gas Train Components, Sizes 600-850...
- Page 103 Brute Page 103 HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS Sizes 285 - Parts Illustration 7. Heat Exchanger Components...
- Page 104 Parts Illustration 8. Electrical Components Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement. 200 Lafayette St. www.BradfordWhite.com Middleville, MI 49333 Warranty: (800) 531-2111 Litho in U.S.A. © Bradford White 21-01 Document 1344G...
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