Panel Radiators For Buderus Panel Radiator models: - Model 21 - Model 22 - Towel Warmers Design Manual
Panel Radiator Design Manual 2 | Technical specifications are subject to change without prior notice Panel Radiator Design Manual | 12.
Applications manual Panel Radiator Design Manual Table of Contents 1 General Info 5 2 Safety 6 3 Product Description 7 4 Mounting Guidelines 15 5 Radiator Output Ratings 17 6 Radiator Selection Procedure 21 7 Piping Arrangements 22 8 Buderus NB Style Towel Racks 32 |3 Panel Radiator Design Manual | 12.
Panel Radiator Design Manual 4 | Technical specifications are subject to change without prior notice Panel Radiator Design Manual | 12.
Applications manual 1. General information 1.1. This manual This application manual is intended for engineers, architects, contractors, and installers. It provides specification on panel radiator and towel rack models, sizing information, and system layout assistance for hydronic heating systems with panel radiators. Panel Radiator Design Manual 1.2.
Panel Radiator Design Manual 2. Safety 2.1. Layout of the instructions Two levels of danger are identified and signified by the following terms: WARNING! RISK OF FATAL INJURY Identifies possible dangers emanating from a product, which might cause serious injury or death if appropriate care is not taken. 2.4. Disposal ● Dispose of the packaging in an environmentally responsible manner. — Dispose of defunct components through an authorized agent in an environmentally responsible manner.
Applications manual 3. Product Description With the line of panel radiators Buderus offers a real alternative to conventional baseboard heating. For decades Europeans have enjoyed the unsurpassed comfort and versatility of radiant heat that is more flexible, efficient, and a cleaner alternative to baseboard heating.
Panel Radiator Design Manual Buderus Towel Warmers Model 22 Table 2 Dimensions Dry weight Water volume HxLxW lbs kg gal liters 12"x16"x4" 16 7 0.4 1.7 12"x24"x4" 24 11 0.7 2.6 12"x36"x4" 36 16 1.0 3.8 12"x48"x4" 48 22 1.3 5.1 12"x63"x4" 63 28 1.8 6.7 12"x71"x4" 71 32 2.0 7.6 20"x16"x4" 27 12 0.7 2.6 20"x24"x4" 41 19 1.0 3.8 20"x36"x4" 62 28 1.5 5.8 20"x48"x4" 82 37 2.0 7.7 20"x59"x4" 101 46 2.5 9.4 20"x63"x4" 108 49 2.6 10.
Applications manual Panel Radiator Design Manual Radiator Accessories Piping Connections Buderus offers a variety of accessories for installation and control of the radiators for different piping arrangements. Each stocking radiator has 20 mm (approx. 3/4) metric male tappings on the bottom on one side. The radiator can be mounted with these connections facing left or right. Figure 9 shows supply and return connections which cannot be reversed.
Panel Radiator Design Manual Part no. 1016311 Straight Diverter Valve w/ isolation valves for panel radiators Part no. 1016362 Straight Crossover Valve w/ isolation valves for panel radiators Part no. 3L602502 Pressure Bypass Valve 3/4" male thread for panel radiators and towel racks Part no. 1016312 Angled Diverter Valve w/ adjustable bypass and isolation valves for panel radiators Part no.
Applications manual Panel Radiator Design Manual Part no. 80262170 Straight Valve w/ isolation valves for panel radiators Part no. 013G8015 Single Valve, straight with adjustment at front for towel racks; Head can be replaced with thermostatic head #013G8250 or #82721124 Part no. 80262172 Angled Valve w/ isolation valves for panel radiators Part no. 013G8014 Single Valve, angled with adjustment at the front for towel racks; Head can be replaced with thermostatic head #013G8250 or #82721124 Part no.
Panel Radiator Design Manual Floor Brackets for panel radiators Table 4 Floor Brackets Part Number Model numbers: 22 817-BUD Model numbers: 21 817-BUD-1 Optional covers for brackets 81606400 Flow Setter Valve: Each radiator is equipped with a flow setter valve mounted on the same side as the water connections of the panel radiator. This valve consists of two part integral components for temperature control and flow balancing. Fig.
Applications manual Panel Radiator Design Manual Diverter Valves: Straight (part number 1016311) and angled (part number 1016312) diverter valves are available from Buderus for use in a one-pipe system (fig. 4). Shut offs are located on the supply and return branches to the radiator, allowing to isolate the radiator from the piping system so it can be drained and removed without decommissioning the complete heating system.
Panel Radiator Design Manual Thermostatic Sensor head: Buderus 1 2 Buderus A thermostatic head with remote sensor is available for locations where the valve head would be covered behind a curtain or otherwise blocked from sensing the actual room temperature. Length of the capillary: 79“ (2000 mm). 3 4 Adding a Buderus Thermostatic Head enables room-byroom zone control for optimum comfort and efficiency. It is easily installed on the flow setter valve.
Applications manual 4. Panel Radiator Design Manual Mounting Guidelines Panel Radiator Installation Model 21 and 22: Wall Mounting Both model 21 and 22 radiators can be wall or floor mounted. All wall brackets must be secured to studs or other supports of sufficient strength for panel radiator weight. Radiators with a length of 71" or less require 2 brackets (1 set); lengths 79” or larger require 2 sets. Each bracket is supplied with a slotted plastic locating clip.
Panel Radiator Design Manual Stud Finished wall Minimum of 4" Bracket 1⁹/₁₆" or 2¹/₁₆" Bracket Minimum of 4" Return Supply 1 2 Panel Radiator 2½" 2" TOP VIEW Fig. 8 1³/16" Model 21 Panel Radiator Rough in Dimensions in inches for wall mounting Stud Finished wall Minimum of 4" Bracket 1⁹/₁₆" or 2¹/₁₆" 3⅜" from finished wall to center of tapings Minimum of 4" Bracket Return Supply TOP VIEW 1 2 Panel Radiator 4" Fig.
Applications manual 5. Panel Radiator Design Manual Radiator Output Ratings Outputs depend on panel radiator size, average water temperature, and room temperature. Four examples are presented below to illustrate a range of options. If none of them applies, use Figure 10 and Table 9 to determine output based on individual requirements. Tables 7 and 8 show the outputs of Model 21 and 22 in-stock radiators at four different water temperatures. Use the high temperature column if restricted in wall space.
Panel Radiator Design Manual Model 22: 4" (100mm) deep Table 8 Output BTU/hr Supply 194°F (90°C) 176°F (80°C) 158°F (70°C) 140°F (60°C) Delta T 36°F (20°C) 36°F (20°C) 18°F (10°C) 18°F (10°C) 12"x16"x4" 1600 1300 1100 800 3-21216 12"x24"x4" 2400 1900 1700 1200 3-21224 12"x36"x4" 3700 2900 2500 1800 3-21236 12"x48"x4" 4900 3800 3400 2400 3-21248 12"x63"x4" 6500 5100 4500 3300 3-21263 12"x71"x4" 7300 5800 5100 3700 3-21271 20"x16"x4" 2500 2000 1700 1200 3-
Applications manual Panel Radiator Design Manual If tables 7 and 8 do not match a system‘s requirements, the following guidelines provide means to calculate the effects of ambient room temperature, supply water temperature and temperature drop through the radiator on the radiator output.
Panel Radiator Design Manual Example: Compute the output of a Model 21 20” x 59” radiator with an average water temperature of 140°F (60°C) in the radiator and a room temperature of 70°F (21°C). Solution: Listed output = 7,000 Btu/hr (See Table 9) ∆T = 140 - 70 = 70°F: Conversion Factor = 0.569 (See Table 9) Adjusted output = 0.569 x 7,000 = 3,983 Btu/hr. Comment: The effect of the ambient room temperature is already accounted for in the conversion factors listed in Table 9.
Applications manual 6. Panel Radiator Design Manual Radiator Selection Procedure Several factors must be considered in the selection of a panel radiator. These are: • Heat loss of the room. • Location of the radiator(s) and available floor to window height. • Desired piping arrangement. • Room usage. • Type of room control used. All factors are discussed below and must be given consideration prior to final radiator size and model selection. 1.
Panel Radiator Design Manual 7. Piping Arrangements One-Pipe System Options The design of a panel radiator based heating system involves selection of a piping system, pipe sizes, overall design temperature drop, required flow rates and desired type of system control. For trouble-free system operation, do not exceed the flow rates in Table 10. Maximum flow rates & heat carrying capacities Table 10 Figure 11 presents three different one-pipe arrangements.
Applications manual Panel Radiator Design Manual Option 3: Multiple one-pipe systems. Options 2 and 3 above can be installed in a multiple loop fashion where several one-pipe systems are connected between a common supply and return manifold. Assure adequate flow in all piping systems when using monoflow loops and/or diverter valve loops. Isolation and balancing valves are recommended on each loop for service and flow control.
Panel Radiator Design Manual Design procedure for One-Pipe System with monoflow tees or diverter valves Table 11 1 Select room sequence 2 Heat load per room 3. Determine linear footage of wall space available for each radiator. 3 (BTU/hr) 4. Compute the required heat load per foot for each room. 4 5. Select system temperature drop ∆T = 20, 30 or 40°F (11°C, 17°C, 22°C) and maximum supply temperature.
Applications manual Panel Radiator Design Manual Example: One-Pipe System Layout Design a one-pipe system for a second floor with individual room temperature control: Table 12 Description Heat Load Window Size Hook-up Sequence Bathroom 3,000 1x3 ft wide first Master Bedroom 9,000 2x4 ft wide second Bedroom 2 6,000 1x3 ft wide third Bedroom 3 4,000 1x3 ft wide fourth Solution: Step 1. Complete the Radiator Sizing Sheet to find minimum size radiator. Step 2.
Panel Radiator Design Manual Two-Pipe System Options Figure 12 illustrates two common two-pipe configurations. Option 4: Two-Pipe Direct Return System 1 2 1 2 1 2 Option 5: Two-Pipe Reverse Return System 1 2 1 2 1 2 Pressure Bypass Valve Drawing not to scale Fig. 12 Two-pipe System Options Benefits of Two-Pipe Systems: Requirements for Two-Pipe System: 1. Each radiator is supplied with the same temperature water maximizing radiator output.
Applications manual Panel Radiator Design Manual Design Procedure for Two-Pipe System 1. Determine individual heat loads. Table 14 1 Select room sequence 2 Heat load per room 3 (BTU/hr) 4 Available wall space (ft) 5 Minimum Required Heat Load per linear ft (BTU/ft) 6 Total heat load (BTU/ft) 7 Total loop GPM 8 Supply temp per room List possible radiator Models and sizes 2. Select desired overall temperature drop of systems (∆T); i.e. 20°F (11°C), 30°F (17°C) or 40°F (22°C). 3.
Panel Radiator Design Manual Example 2: Two-pipe System Lay-out Design and select a two pipe panel radiator system with the following requirements: Table 15 Description Heat Load Window Size Required BTU/ft Walk-in closet 2,000 none Bathroom 5,000 1x2 ft wide 2,500 Bedroom 1 8,000 2x3 ft wide 1,333 Bedroom 2 10,000 2x4 ft wide 1,250 Master Bedroom 12,000 2x4 ft wide 1,500 Total Load: 37,000 Btu/hr System Parameters: Maximum Supply Temperature: 194°F (90°C) Thermostat in master bedroom
Applications manual Balancing the system Initial settings of flow setter valves will help to ensure proper flow through all radiators. Keep in mind that this is only a starting point and that the system may require further adjustment based on the heating characteristics of the structure. Procedure for setting the flow-setter valves. 1. Identify the largest radiator. In the above example it would be the master bedroom radiator. The setting for this radiator should be “N”.
Panel Radiator Design Manual Pressure drop curves: Settings on flowsetter 1 200 2 3 4 5 6 7 N Pressure Drop in Inches H 0 ² 100 90 80 70 60 50 40 30 20 10 9 8 7 6 5 4 BTU/Hr BTU/Hr BTU/Hr 0.05 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.9 1 GPM 500 1,000 2,000 5,000 10,000 750 1,500 3,000 7,500 15,000 1,000 2,000 4,000 10,000 20,000 2 3 ∆T = 20°F (10°C) ∆T = 30°F (15°C) ∆T = 40°F (20°C) Fig.
Applications manual Panel Radiator Design Manual % Radiator Flow 35 45 50 40 30 3 ∆p Head in Feet 2 1 0.50 0.75 1.0 1.5 2.0 Circuit Flow - GPM 2.5 3.0 4.0 Fig. 14 | 31 Panel Radiator Design Manual | 12.
Panel Radiator Design Manual 8. Buderus NB Style Towel Racks The Noblesse style towel racks are attractively designed with a vertical frame of two 2-3/4" round pipes connected horizontally with 1” curved round steel tubing precision welded in the interior. Two ½” NPT female tapings are available on the bottom of the towel rack for the supply and return. An air vent is already installed on the top right of the NB towel rack. The NB has an adjustable offset of 3” and 4” from the wall.
Applications manual Panel Radiator Design Manual Width - 24" Finished Wall Bleeder (installed) 2" Recommended Bracket locations 16" Recommended bracket spacing 32" Towel Rack - 25" 47" Towel Rack - 41" 72" Towel Rack - 65" Recommended Bracket location Top view Adjustable from 3" to 4" 21½" center to center ½" Taping ½" Taping Recommended minimum floor clearance 6" Fig. 15 Buderus NB Style Towel Warmers - Supply and Return tapings are interchangeable.
Panel Radiator Design Manual 34 | Technical specifications are subject to change without prior notice Panel Radiator Design Manual | 12.
Applications manual Panel Radiator Design Manual | 35 Panel Radiator Design Manual | 12.
Products manufactured by: Bosch Thermotechnik GmbH Sophienstrasse 30-32 D-35576 Wetzlar www.buderus.de Bosch Thermotechnology Corporation reserves the right to make changes without notice due to continuing engineering and technological advances. BTC 451001101 A | 12.2009 Bosch Thermotechnology Corporation 50 Wentworth Avenue Londonderry, NH 03053 Tel.: 603-552-1100 Fax: 603-584-1681 www.buderus.
