Commercial Hydronic Radiators

Model  RV

Radiant Vertical Panels

Vertical Panels

Vertical panels are a great choice when wall space is limited, such as in vestibules, stairwells, next to full-height glazing, or walls with a lot of millwork such as kitchens. With tubes running vertically from floor to ceiling, a large amount of heating surface can be installed for a very small floor area. They fit into otherwise unused space, such as behind columns or doors, and can be recessed into the wall to clear door swings. Vertical panels can be manufactured in heights up to 29′-6″.

Product Specifications

General:

Provide steel panel radiator elements of lengths and in locations as indicated, and of capacities, style and having accessories as scheduled. The wall hung vertical heating panel radiation shall be of one-piece all-welded steel construction, consisting of flattened water tubes welded to headers at the top and bottom. The radiator shall include an integral heavy gauge (0.09” minimum) all-welded perforated side grilles for both sides.

The radiator’s headers shall include all necessary inlet, outlet and vent connections as required. Standard connection sizes are ó” NPT tapered thread for supply and return piping, and 1/8” for the vent connection. Internal baffling is provided where required for proper water flow. Optional.” connections shall be available at an additional cost.

The radiant heating panels shall be available in heights from 2’-0” to 29’-6” in two inch even increments without the need for splicing. Appropriate wall mounting brackets shall be provided with the radiators, but additional wall bracing (if required) is to be provided by the installing contractor. Panel radiation expansion shall not exceed 1/64” per foot of radiation at 215ºF. The installer shall provide adequate expansion compensation for each radiator.

The panel radiation shall be manufactured in the USA.

 

Pressure Ratings:

Pressure ratings for the radiation shall be as follows:

STANDARD: Working pressure-56 PSI maximum, Test Pressure-74 PSI maximum

OR

MEDIUM: Working pressure-85 PSI maximum, Test Pressure-110 PSI maximum

OR

HIGH: Working pressure-128 PSI maximum, Test Pressure 184 PSI maximum

 

Finishes:

The panel radiation shall be cleaned and phosphatized in preparation for the powder coat finish. The radiation is then finish painted with a gloss powder coat finish, for a total paint thickness of 2-3 mils (0.002” – 0.003”). The color shall be selected from Runtal’s ten Standard Colors; or Runtal Optional Colors shall be available at an additional cost.

 

Warranty:

All Runtal radiators are covered by a 5-Year Limited Warranty.

 

Manufacturer:

Subject to compliance with requirements, provide flat tube panel radiation as manufactured by Runtal North America, Inc.

 

OPTIONAL ITEMS WHICH MAY BE ADDED TO THE SPECIFICATION:

  1. Ribbed pipe cover trims, finished to match the radiators shall be provided with the radiation.
  2. The radiation manufacturer shall provide combination shutoff valve/union fitting of less than two inches in width for the supply and return to each panel radiator, to be field installed by others.
  3. Runtal-Flex connectors shall be used where appropriate to provide expansion compensation for the radiators.

 

Model Type RV
Quick Specifications


RV-3 with Both Side & Vertical Connections – Shown for Example Only

Panel Radiator Specification

1. Radiators are manufactured of cold rolled low carbon steel, fully welded and consisting of header pipes at each end, connected by flat oval water tubes.
2. Three tube thicknesses are available:
Standard Pressure – 0.048″ min wall thickness
Medium Pressure – 0.058″ min wall thickness
High Pressure – 0.078″ min wall thickness
3. Radiator header pipes are square 0.109″ min wall thickness and include all necessary supply, return, and air vent connections. Internal baffling is provided as required.
4. Standard piping connections are 1/2″ NPT taper threaded sockets, located in either side, or vertical positions. Optional 3/4″ NPT connections are available. Air vent connections are 1/8″ NPT taper threaded sockets.
5. Three working pressures are available:
Standard Pressure – 56 psi max (Tested at 74 psi)
Medium Pressure – 85 psi max (Tested at 110 psi)
High Pressure – 128 psi max (Tested at 184 psi)
6. Radiator expansion does not exceed 0.016 inch per linear foot at 215°F. Expansion compensation to be provided in the piping as required, by others.
7. Radiators are cleaned and phosphatized in preparation for the powder coat finish.
8. Radiators are painted with a gloss powder coat finish, for a total paint thickness of 2 to 3 mils (0.002″-0.003″).
9. Color of the finish paint shall be selected from available standard or optional colors prior to ordering.
10. Wall mounting brackets are provided with radiators, unless floor posts are specified.
11. Necessary wall support blocking for proper radiator mounting shall be by others.
12. Radiators are manufactured in the USA to the sizes, capacities, and quantities as shown on the plans and schedules.

Product Specifications (PDF)

BTUH/ft Ratings

Energy efficient as well as space saving, RV panels are Runtal’s radiant vertical  panel. RV panels are useful in foyers and large public entryways, and they provide more comfort at lower room temperatures than convective heaters.

BTUH/ft Ratings @ 65°F EAT
MODEL WIDTH inches DEPTH inches 215°F 180°F 140°F
RV-2 5.7 1.6 400 290 160
RV-3 8.6 1.6 600 430 250
RV-4 11.5 1.6 800 570 330
RV-5 14.4 1.6 1000 710 410
RV-6 17.3 1.6 1200 850 490
RV-7 20.2 1.6 1400 990 570
RV-8 23.1 1.6 1600 1130 650
RV-9 26.1 1.6 1796 1264 724
RV-10 29.0 1.6 1996 1405 808

Various average water temperatures (AWT) are shown here for convenience, but for more specific conditions use the appropriate correction factor with the 215°F rating. See the technical pages for the correction factor best suited to the design conditions.

Overview (PDF)

Heating Capacity

Model Type RV
BTUH/ft Ratings


RV-3 with Both Side & Vertical Connections – Shown for Example Only

Technical Data For All RV Models Is Included Below

MODEL
TYPE
WIDTH
W
BTUH/FT OUTPUT @ LISTED AWT & 65°F EAT DRY WT
lbs/ft
215°F 190 180 170 160 150 140 130 120
                       
RV-1 2-3/4″ 200 157 141 125 110 95 80 67 54 1.3
RV-2 5-3/4″ 399 313 281 249 219 189 161 133 107 2.4
RV-3 8-5/8″ 599 470 421 374 329 284 241 200 161 3.5
RV-4 11-1/2″ 798 627 562 499 438 379 322 267 214 4.6
RV-5 14-3/8″ 998 783 702 624 548 473 402 334 268 5.7
RV-6 17-1/4″ 1198 940 843 748 657 568 483 400 322 6.8
RV-7 20-1/4″ 1397 1097 983 873 767 663 563 467 375 8.0
RV-8 23-1/8″ 1597 1253 1124 998 876 757 643 534 429 9.1
RV-9 26-1/8″ 1796 1410 1264 1122 986 852 724 601 483 10.2
RV-10 29″ 1996 1566 1405 1247 1095 947 808 667 536 11.3
RV-11 31-7/8″ 2196 1723 1545 1372 1204 1041 885 734 590 12.4
RV-12 34-7/8″ 2395 1880 1686 1496 1314 1136 965 801 643 13.5
RV-13 37-3/4″ 2595 2036 1826 1621 1423 1231 1045 867 697 14.6
RV-14 40-5/8″ 2794 2193 1967 1746 1533 1325 1126 934 751 15.7
RV-15 43-5/8″ 2994 2350 2107 1871 1642 1420 1206 1001 804 16.8
RV-16 46-1/2″ 3194 2506 2248 1995 1752 1515 1287 1068 858 17.9
RV-17 49-3/8″ 3393 2663 2388 2120 1861 1609 1367 1134 911 19.0
RV-18 52-3/8″ 3593 2820 2529 2245 1971 1704 1447 1201 965 20.1
RV-19 55-1/4″ 3792 2976 2669 2369 2080 1799 1528 1268 1019 21.3
RV-20 58-1/8″ 3992 3133 2810 2494 2190 1893 1608 1335 1072 22.4
RV-21 61″ 4192 3289 2950 2619 2299 1988 1689 1401 1126 23.5
RV-22 64″ 4391 3446 3091 2744 2409 2083 1769 1468 1179 24.6
RV-23 66-7/8″ 4591 3603 3231 2868 2518 2177 1849 1535 1233 25.7
RV-24 69-3/4″ 4790 3759 3372 2993 2628 2272 1930 1601 1287 26.8

NOTE: Heat Outputs for various AWT’s include 15% Heat Effect for placement along outside walls. Use the 215° F Output Rating with the Correction Factor for more specific design conditions. Medium Pressure increases Dry Weight by 10%, High Pressure increases Dry Weight by 15%

Heating Capacity (PDF)

Correction Factors

Correction Factors

EAT
AWT 45°F 50°F 55°F 60°F 65°F 70°F 75°F 80°F 85°F 90°F 95°F
240°F 1.365 1.350 1.304 1.266 1.220 1.171 1.124 1.086 1.039 1 0.953
235°F 1.343 1.305 1.267 1.219 1.171 1.124 1.086 1.038 1 0.952 0.910
230°F 1.305 1.267 1.219 1.171 1.124 1.086 1.038 1 0.952 0.910 0.868
225°F 1.267 1.219 1.171 1.124 1.086 1.038 1 0.952 0.910 0.868 0.826
220°F 1.219 1.171 1.124 1.086 1.038 1 0.952 0.910 0.868 0.826 0.785
215°F 1.171 1.124 1.086 1.038 1 0.952 0.910 0.868 0.826 0.785 0.744
210°F 1.124 1.086 1.038 1 0.952 0.910 0.868 0.826 0.785 0.744 0.704
205°F 1.086 1.038 1 0.952 0.910 0.868 0.826 0.785 0.744 0.704 0.664
200°F 1.038 1 0.952 0.910 0.868 0.826 0.785 0.744 0.704 0.664 0.625
195°F 1 0.952 0.910 0.868 0.826 0.785 0.744 0.704 0.664 0.625 0.587
190°F 0.952 0.910 0.868 0.826 0.785 0.744 0.704 0.664 0.625 0.587 0.549
185°F 0.910 0.868 0.826 0.785 0.744 0.704 0.664 0.625 0.587 0.549 0.511
180°F 0.868 0.826 0.785 0.744 0.704 0.664 0.625 0.587 0.549 0.511 0.474
175°F 0.826 0.785 0.744 0.704 0.664 0.625 0.587 0.549 0.511 0.474 0.438
170°F 0.785 0.744 0.704 0.664 0.625 0.587 0.549 0.511 0.474 0.438 0.403
165°F 0.744 0.704 0.664 0.625 0.587 0.549 0.511 0.474 0.438 0.403 0.369
160°F 0.704 0.664 0.625 0.587 0.549 0.511 0.474 0.438 0.403 0.369 0.334
155°F 0.664 0.625 0.587 0.549 0.511 0.474 0.438 0.403 0.369 0.334 0.301
150°F 0.625 0.587 0.549 0.511 0.474 0.438 0.403 0.369 0.334 0.301 0.269
145°F 0.587 0.549 0.511 0.474 0.438 0.403 0.369 0.334 0.301 0.269 0.237
140°F 0.549 0.511 0.474 0.438 0.403 0.369 0.334 0.301 0.269 0.237 0.207
135°F 0.511 0.474 0.438 0.403 0.369 0.334 0.301 0.269 0.237 0.207 0.177
130°F 0.474 0.438 0.403 0.369 0.334 0.301 0.269 0.237 0.207 0.177 0.149
125°F 0.438 0.403 0.369 0.334 0.301 0.269 0.237 0.207 0.177 0.149 0.122
120°F 0.403 0.369 0.334 0.301 0.269 0.237 0.207 0.177 0.149 0.122 0.096
115°F 0.369 0.334 0.301 0.269 0.237 0.207 0.177 0.149 0.122 0.096 0.071
110°F 0.334 0.301 0.269 0.237 0.207 0.177 0.149 0.122 0.096 0.071 0.50
105°F 0.301 0.269 0.237 0.207 0.177 0.149 0.122 0.096 0.071 0.50 0.030
100°F 0.269 0.237 0.207 0.177 0.149 0.122 0.096 0.071 0.50 0.030 0.011
EXAMPLE: To find the BTUH/ft Rating for an RF-4 Panel at 145°F AWT and 65°F EAT, Multiply the Correction Factor (0.438) by the BTUH/ft Rating at 215°F (1351), e.g. (0.438) X (1351) = 592 BTUH/ft

Correction Factors

Flow Rates

How To Determine Flow Rates

The flow rate through a Runtal radiator (or series of radiators) is dependent on the length of the radiator (or combined length of the radiator series), and the design Entering Water Temperature (EWT) and the design Leaving Water Temperature (LWT).

The designer picks the design EWT and LWT. For example, he might pick 170°F as the EWT and 150°F as the LWT. The median point between these two temperatures is called the Average Water Temperature (AWT), and in this example the AWT is 160°F.

The Runtal Heating Capacity charts are based on the heating capacity per foot of radiator, based on the designer’s chosen AWT, and this heating capacity per foot is expressed in units of BTUH/FT @ a given AWT. The required flow rate (GPM) is figured as follows:

Flow Rate = (Heating Capacity/Foot X Radiator Length)

DT –LWT) X 500]

The (EWT – LWT) is commonly referred to as the “Delta T”, or “DT”.

Therefore, our Flow Rate formula becomes:

GPM = (BTUH/FT X FT of Radiator) DT (DT X 500)

As an example, let’s say our designer needs 445 BTUH/FT capacity, over a
10′-0″ span of wall, and has chosen the design water temperatures as EWT = 170°F, and LWT = 150°F. This means our AWT is 160°F. Looking in the Runtal type “R” radiator Heating Capacity chart, we see that an R-4 radiator gives us the required 445 BTUH/FT at 160°F AWT. Therefore, the required flow rate for the 10′-0″ long R-4 radiator is:

GPM = (445 BTUH/FT X 10FT) DT (20°F DT X 500) = 0.445 GPM

Note that there are various combinations of EWT and LWT that can result in the same AWT. In our example above, for instance, a 180°F EWT and a 140°F LWT result in the same 160°F AWT. With Runtal’s unique flattened water tube design, Delta T’s of up to 60°F are possible without concern that the flow rate is too low for heat transfer (see the “Design Tips” section for more information).

As for a maximum flow rate for Runtal radiators, we recommend no more that 1.5 GPM per water tube. For our R-4 example above, this would mean a maximum flow rate of 6 GPM for an opposite end piped radiator, or 3 GPM for a same end piped radiator (see the “Design Tips” section for more information).

 

Piping Options

Piping Options

A Type Connections


Type
Lefthand Supply

A Type
Righthand Supply
B Type Connections

 


Type
Lefthand Supply

Type
Righthand Supply
C Type Connections

 


Type
Lefthand Supply

Type
Righthand Supply

Piping Options (PDF)

Piping Options: Type A, B, & C (PDF)

Pressure Drop: Opposite End

Model Type RV
Pressure Drop: Opposite End

RADIATOR PRESSURE DROP – FOOT OF HEAD PER RADIATOR

RADIATOR MODEL
NUMBER OF TUBES FOR FLOW

CONNECTION PD

PER CONNECTION

STD
PRESSURE
TUBE

RV-1 RV-2 RV-3 RV-4 RV-5 RV-6 RV-7 RV-8 RV-9 RV-10 1/2″
CONN
PD
1 2 3 4 5 6 7 8 9 10
0.05 0.21 0.21 0.05 0.05 0.02 0.02 0.01 0.01 0.01 0.01 0.01
0.75 0.45 0.45 0.12 0.12 0.05 0.05 0.03 0.03 0.03 0.03 0.01
1.00 0.79 0.79 0.21 0.21 0.09 0.09 0.05 0.05 0.05 0.05 0.03
1.50 1.72 1.72 0.45 0.45 0.21 0.21 0.12 0.12 0.12 0.12 0.04
2.00 3.00 3.00 0.79 0.79 0.36 0.36 0.21 0.21 0.21 0.21 0.06
2.50 4.61 4.61 1.21 1.21 0.55 0.55 0.32 0.32 0.32 0.32 0.08
3.00 6.56 6.56 1.72 1.72 0.79 0.79 0.45 0.45 0.45 0.45 0.10
3.50 8.83 8.83 2.32 2.32 1.06 1.06 0.61 0.61 0.61 0.61 0.15

GPM

4.00 11.42 11.42 3.00 3.00 1.37 1.37 0.79 0.79 0.79 0.79 0.18
4.50 14.34 14.34 3.76 3.76 1.72 1.72 0.99 0.99 0.99 0.99 0.20
5.00 17.57 17.57 4.61 4.61 2.11 2.11 1.21 1.21 1.21 1.21 0.25
5.50 21.12 21.12 5.54 5.54 2.53 2.53 1.45 1.45 1.45 1.45 0.28
6.00 24.98 24.98 6.56 6.56 3.00 3.00 1.72 1.72 1.72 1.72 0.33
6.50 29.15 29.15 7.65 7.65 3.50 3.50 2.01 2.01 2.01 2.01 0.37
7.00 33.64 33.64 8.83 8.83 4.04 4.04 2.32 2.32 2.32 2.32 0.42
7.50 38.43 38.43 10.08 10.08 4.61 4.61 2.65 2.65 2.65 2.65 0.50
8.00 43.52 43.52 11.42 11.42 5.22 5.22 3.00 3.00 3.00 3.00 0.56
MED
PRESSURE
TUBE
0.05 0.46 0.46 0.12 0.12 0.06 0.06 0.03 0.03 0.03 0.03 0.01
0.75 1.00 1.00 0.26 0.26 0.12 0.12 0.07 0.07 0.07 0.07 0.01
1.00 1.75 1.75 0.46 0.46 0.21 0.21 0.12 0.12 0.12 0.12 0.03
1.50 3.83 3.83 1.00 1.00 0.46 0.46 0.26 0.26 0.26 0.26 0.04
2.00 6.67 6.67 1.75 1.75 0.80 0.80 0.46 0.46 0.46 0.46 0.06
2.50 10.26 10.26 2.69 2.69 1.23 1.23 0.71 0.71 0.71 0.71 0.08
3.00 14.59 14.59 3.83 3.83 1.75 1.75 1.00 1.00 1.00 1.00 0.10
3.50 19.65 19.65 5.16 5.16 2.36 2.36 1.35 1.35 1.35 1.35 0.15

GPM

4.00 25.42 25.42 6.67 6.67 3.05 3.05 1.75 1.75 1.75 1.75 0.18
4.50 31.91 31.91 8.37 8.37 3.83 3.83 2.20 2.20 2.20 2.20 0.20
5.00 39.10 39.10 10.26 10.26 4.69 4.69 2.69 2.69 2.69 2.69 0.25
5.50 47.00 47.00 12.33 12.33 5.64 5.64 3.24 3.24 3.24 3.24 0.28
6.00 55.60 55.60 14.59 14.59 6.67 6.67 3.83 3.83 3.83 3.83 0.33
6.50 64.88 64.88 17.03 17.03 7.79 7.79 4.47 4.47 4.47 4.47 0.37
7.00 74.86 74.86 19.65 19.65 8.98 8.98 5.16 5.16 5.16 5.16 0.42
7.50 85.52 85.52 22.44 22.44 10.26 10.26 5.89 5.89 5.89 5.89 0.50
8.00 96.87 96.87 25.42 25.42 11.62 11.62 6.67 6.67 6.67 6.67 0.56
HIGH
PRESSURE
TUBE
0.50 0.82 0.82 0.22 0.22 0.10 0.10 0.06 0.06 0.06 0.06 0.01
0.75 1.79 1.79 0.47 0.47 0.22 0.22 0.12 0.12 0.12 0.12 0.01
1.00 3.13 3.13 0.82 0.82 0.38 0.38 0.22 0.22 0.22 0.22 0.03
1.50 6.84 6.84 1.79 1.79 0.82 0.82 0.47 0.47 0.47 0.47 0.04
2.00 11.91 11.91 3.13 3.13 1.43 1.43 0.82 0.82 0.82 0.82 0.06
2.50 18.33 18.33 4.81 4.81 2.20 2.20 1.26 1.26 1.26 1.26 0.08
3.00 26.06 26.06 6.84 6.84 3.13 3.13 1.79 1.79 1.79 1.79 0.10
3.50 35.09 35.09 9.21 9.21 4.21 4.21 2.42 2.42 2.42 2.42 0.15

GPM

4.00 45.40 45.40 11.91 11.91 5.45 5.45 3.13 3.13 3.13 3.13 0.18
4.50 56.99 56.99 14.96 14.96 6.84 6.84 3.92 3.92 3.92 3.92 0.20
5.00 69.84 69.84 18.33 18.33 8.38 8.38 4.81 4.81 4.81 4.81 0.25
5.50 83.95 83.95 22.03 22.03 10.07 10.07 5.78 5.78 5.78 5.78 0.28
6.00 99.30 99.30 26.06 26.06 11.91 11.91 6.84 6.84 6.84 6.84 0.33
6.50 115.88 115.88 30.41 30.41 13.91 13.91 7.98 7.98 7.98 7.98 0.37
7.00 133.70 133.70 35.09 35.09 16.04 16.04 9.21 9.21 9.21 9.21 0.42
7.50 152.74 152.74 40.08 40.08 18.33 18.33 10.52 10.52 10.52 10.52 0.50
8.00 173.01 173.01 45.40 45.40 20.76 20.76 11.91 11.91 11.91 11.91 0.56

RADIATOR PRESSURE DROP IS FOR THE ENTIRE RADIATOR; IT IS NOT PER FOOT OF RADIATOR

CONNECTION PRESSURE DROP FOR THE 3/4″ CONNECTION IS THE SAME AS THE 1/2″ CONNECTION

Pressure Drop: Opposite End (PDF)

Pressure Drop: Same End

Model Type RV
Pressure Drop: Same End

RADIATOR PRESSURE DROP – FOOT OF HEAD PER RADIATOR

RADIATOR MODEL
NUMBER OF TUBES FOR FLOW

CONNECTION PD

PER CONNECTION

STD
PRESSURE
TUBE

RF-1 RF-2 RF-3 RF-4 RF-5 RF-6 RF-7 RF-8 RF-9 RF-10 1/2″
CONN
PD
1 2 3 4 5 6 7 8 9 10
0.05 0.21 0.05 0.02 0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.01
0.75 0.45 0.12 0.05 0.03 0.02 0.01 0.01 0.01 0.01 0.01 0.01
1.00 0.79 0.21 0.09 0.05 0.04 0.02 0.02 0.01 0.01 0.01 0.03
1.50 1.72 0.45 0.21 0.12 0.08 0.05 0.04 0.03 0.02 0.02 0.04
2.00 3.00 0.79 0.36 0.21 0.13 0.09 0.07 0.05 0.04 0.04 0.06
2.50 4.61 1.21 0.55 0.32 0.21 0.15 0.11 0.08 0.07 0.05 0.08
3.00 6.56 1.72 0.79 0.45 0.29 0.21 0.15 0.12 0.09 0.08 0.10
3.50 8.83 2.32 1.06 0.61 0.40 0.28 0.21 0.16 0.13 0.10 0.15

GPM

4.00 11.42 3.00 1.37 0.79 0.51 0.36 0.27 0.21 0.16 0.13 0.18
4.50 14.34 3.76 1.72 0.99 0.64 0.45 0.34 0.26 0.21 0.17 0.20
5.00 17.57 4.61 2.11 1.21 0.79 0.55 0.41 0.32 0.25 0.21 0.25
5.50 21.12 5.54 2.53 1.45 0.95 0.67 0.49 0.38 0.30 0.25 0.28
6.00 24.98 6.56 3.00 1.72 1.12 0.79 0.58 0.45 0.36 0.29 0.33
6.50 29.15 7.65 3.50 2.01 1.31 0.92 0.68 0.53 0.42 0.34 0.37
7.00 33.64 8.83 4.04 2.32 1.51 1.06 0.79 0.61 0.48 0.40 0.42
7.50 38.43 10.08 4.61 2.65 1.72 1.21 0.90 0.69 0.55 0.45 0.50
8.00 43.52 11.42 5.22 3.00 1.95 1.37 1.02 0.79 0.63 0.51 0.56
MED
PRESSURE
TUBE
0.05 0.46 0.12 0.06 0.03 0.02 0.01 0.01 0.01 0.01 0.01 0.01
0.75 1.00 0.26 0.12 0.07 0.04 0.03 0.02 0.02 0.01 0.01 0.01
1.00 1.75 0.46 0.21 0.12 0.08 0.06 0.04 0.03 0.03 0.02 0.03
1.50 3.83 1.00 0.46 0.26 0.17 0.12 0.09 0.07 0.06 0.04 0.04
2.00 6.67 1.75 0.80 0.46 0.30 0.21 0.16 0.12 0.10 0.08 0.06
2.50 10.26 2.69 1.23 0.71 0.46 0.32 0.24 0.19 0.15 0.12 0.08
3.00 14.59 3.83 1.75 1.00 0.65 0.46 0.34 0.26 0.21 0.17 0.10
3.50 19.65 5.16 2.36 1.35 0.88 0.62 0.46 0.36 0.28 0.23 0.15

GPM

4.00 25.42 6.67 3.05 1.75 1.14 0.80 0.59 0.46 0.37 0.30 0.18
4.50 31.91 8.37 3.83 2.20 1.43 1.00 0.75 0.58 0.46 0.37 0.20
5.00 39.10 10.26 4.69 2.69 1.75 1.23 0.91 0.71 0.56 0.46 0.25
5.50 47.00 12.33 5.64 3.24 2.10 1.48 1.10 0.85 0.68 0.55 0.28
6.00 55.60 14.59 6.67 3.83 2.49 1.75 1.30 1.00 0.80 0.65 0.33
6.50 64.88 17.03 7.79 4.47 2.90 2.04 1.52 1.17 0.93 0.76 0.37
7.00 74.86 19.65 8.98 5.16 3.35 2.36 1.75 1.35 1.08 0.88 0.42
7.50 85.52 22.44 10.26 5.89 3.83 2.69 2.00 1.55 1.23 1.00 0.50
8.00 96.87 25.42 11.62 6.67 4.34 3.05 2.27 1.75 1.39 1.14 0.56
HIGH
PRESSURE
TUBE
0.50 0.82 0.22 0.10 0.06 0.04 0.03 0.02 0.01 0.01 0.01 0.01
0.75 1.79 0.47 0.22 0.12 0.08 0.06 0.04 0.03 0.03 0.02 0.01
1.00 3.13 0.82 0.38 0.22 0.14 0.10 0.07 0.06 0.05 0.04 0.03
1.50 6.84 1.79 0.82 0.47 0.31 0.22 0.16 0.12 0.10 0.08 0.04
2.00 11.91 3.13 1.43 0.82 0.53 0.38 0.28 0.22 0.17 0.14 0.06
2.50 18.33 4.81 2.20 1.26 0.82 0.58 0.43 0.33 0.26 0.22 0.08
3.00 26.06 6.84 3.13 1.79 1.17 0.82 0.61 0.47 0.38 0.31 0.10
3.50 35.09 9.21 4.21 2.42 1.57 1.10 0.82 0.63 0.51 0.41 0.15

GPM

4.00 45.40 11.91 5.45 3.13 2.03 1.43 1.06 0.82 0.65 0.53 0.18
4.50 56.99 14.96 6.84 3.92 2.55 1.79 1.33 1.03 0.82 0.67 0.20
5.00 69.84 18.33 8.38 4.81 3.13 2.20 1.63 1.26 1.01 0.82 0.25
5.50 83.95 22.03 10.07 5.78 3.76 2.64 1.96 1.52 1.21 0.99 0.28
6.00 99.30 26.06 11.91 6.84 4.45 3.13 2.32 1.79 1.43 1.17 0.33
6.50 115.88 30.41 13.91 7.98 5.19 3.65 2.71 2.09 1.67 1.36 0.37
7.00 133.70 35.09 16.04 9.21 5.99 4.21 3.13 2.42 1.93 1.57 0.42
7.50 152.74 40.08 18.33 10.52 6.84 4.81 3.57 2.76 2.20 1.79 0.50
8.00 173.01 45.40 20.76 11.91 7.75 5.45 4.05 3.13 2.49 2.03 0.56

RADIATOR PRESSURE DROP IS FOR THE ENTIRE RADIATOR; IT IS NOT PER FOOT OF RADIATOR

CONNECTION PRESSURE DROP FOR THE 3/4″ CONNECTION IS THE SAME AS THE 1/2″ CONNECTION

Pressure Drop: Same End (PDF)

Pressure Ratings

Pressure ratings for the radiation shall be as follows:

STANDARD: Working pressure-56 PSI maximum, Test Pressure-74 PSI maximum
MEDIUM: Working pressure-85 PSI maximum, Test Pressure-110 PSI maximum
HIGH: Working pressure-128 PSI maximum, Test Pressure 184 PSI maximum

Detailed Specifications (PDF)

Mounting Systems

RV panel radiators are wall mounted with a bracket system that allows for an easy and cost effective installation. All necessary brackets are included with each panel and recessed wall mounting systems are also possible. Please see the RV technical pages for more complete mounting details.

Overview (PDF)

Wall Mounting

Model Type RV
Wall Mounting

20″ to 48″
[4] K11’s
50″ to 84″
[6] K11’s
86″ to 118″
[8] K11’s
120″ to 152″
[10] K11
154″ to 188″
[12] K11’s


Side Perforated
Grille – Both sides of
radiator
(typical of
all sizes)

190″ to 222″
[14] K11’s
224″ to 258″
[16] K11’s
260″ to 290″
[18] K11’s
292″ to 326
[20] K11’s
328″ to 354″
[22] K11’s

Wall Mounting (PDF)

Colors & Finishes

The panel radiation shall be cleaned and phosphatized in preparation for the powder coat finish. The radiation is then finish painted with a gloss powder coat finish, for a total paint thickness of 2-3 mils (0.002” – 0.003”). The color shall be selected from Runtal’s ten Standard Colors; or Runtal Optional Colors shall be available at and additional cost.

Detailed Specifications (PDF)

Color Options 

Warranty

All Runtal radiators are covered by a 5-Year Limited Warranty.

Warranty (PDF)

Radiator Installation Instructions

Radiator Installation Instructions
Vertical & Ceiling Radiators

GENERAL NOTES – BOTH STYLES
Radiators are boxed together in as few crates as possible. A box of brackets is included as a separate piece, and it is marked to denote brackets. Inside the crates, each panel is wrapped in foam sheeting. Saving this foam to re-wrap the panel once it is wall mounted will protect it from construction site damage.

Each radiator is tagged with a label that indicates the project name, model type, color, connection code, bracket type & quantity and tag number. The tag number will usually designate a floor level and room number for easier placement on the job. Locate each radiator as required.


VERTICALLY MOUNTED RV RADIATORS
Carefully place each radiator face down on a smooth level surface (e.g. floor or table). Distribute the K11 wall brackets for each radiator. The tag on the radiator indicates the quantity of brackets. Mount the brackets securely on wall studs or solid backing, spacing them to match the horizontal wall mounting bars on the back side of the RV panel. There will be (2) K11 brackets per horizontal mounting bar. Make sure to mount the K11’s in far enough to avoid contact with the side perforated grille.

Allow a minimum of 3 inches below each panel radiator to facilitate cleaning and to assure proper output.


CEILING MOUNTED RC RADIATORS
RC model ceiling radiators do not come with any mounting brackets. Typically, installers use threaded rod with locking nuts to secure the panel to the ceiling structure. There are two mounting holes per cross-member stiffener on the back side of the radiator. Each of these mounting points should be used to suspend the radiator, to avoid sagging. It is typically easier to attach the threaded rods to the radiator before raising the assembly to the ceiling for final mounting. Once the radiator is securely fastened to the ceiling structure, adjust the nuts on the threaded rod to straighten and level the radiator. It is recommended to have at least 3 inches minimum from the face of the radiator to the finished ceiling above it. In cases where upward radiation from the back side of the radiator is undesirable, foil faced insulation can be placed in the cavities created by the perforated steel side channels.


ADDITIONAL INSTALLATION NOTES – BOTH STYLES
Thread the supply and return fitting into the connections on the radiator. The sealing tape or pipe dope used is the installer’s choice – make sure the connections are leak tight. One quarter turn past hand tight is usually sufficient. Each radiator needs to be fitted with a 1/8” air vent prior to startup.

Once the radiators are installed, the system can be tested to 50 psi. DO NOT OVER-PRESSURIZE THE RADIATORS as permanent damage may be done.

Standard Pressure Panels – Maximum 56 psi
Medium Pressure Panels – Maximum 85 psi
High Pressure Panels – Maximum 128 psi

Radiators expand a maximum of 0.016 inch per linear foot of length if heated to 215°F. Piping attached to the radiator must provide the necessary expansion compensation.

When the system has been shown to hold 50 psi maximum air, the piping and radiators can be filled with water. As water fills the system and radiators, air is forced to the vent fittings. Vent as much air as possible before turning on the circulating pump(s).

With the system is filled, operate the circulator(s) to force the remaining air to the high points of the system. Turn off the circulator(s) to vent the panels. Each radiator should be individually bled of air. Once cold venting has been completed, heat the system to design temperature and repeat the venting procedure as many times as necessary to remove all air from the system.

Radiator Installation Instructions (PDF)

Operation & Maintenance

Operation & Maintenance
For R, RF, R2F, R3F, RV, RC, UFLT and ThermoTouch

Hydronic Radiator Operation

  1. Radiators are manufactured in the USA of cold rolled low carbon steel and should be used only in closed closed hydronic systems to assure no corrosion of any system components.
  2. Proper radiator operation depends on adequate flow of water to the panel, which can only be accomplished when all the system air has been fully vented from the panels.
  3. Radiators should each be vented, with the system pressurized but in a static state (pumps off). Venting may need to be done periodically to assure a closed system.
  4. DO NOT OVER-PRESSURIZE RADIATORS:
    Most radiators are standard pressure construction. Standard pressure radiators should be tested with NO MORE THAN 50 PSI.
  5. Radiator Operating Pressure Ratings:
    Standard Pressure – 56 psi max (Tested at 74 psi)
    Medium Pressure – 85 psi max (Tested at 110 psi)
    High Pressure – 128 psi max (Tested at 184 psi)
  6. Radiators expand a maximum of 0.016 inch per linear foot of length if heated to 215°F. Piping attached to the radiator must provide the necessary expansion compensation.
  7. Flexible piping and elbowed piping are two simple ways to provide the 1/8 inch to 1/2 inch (typical) of flexibility required in expansion situations (usually series piping).
  8. Runtal Radiators require less flow rate than other hydronic heating products. If flow noise is apparent, balance the system until the noise is reduced.
  9. For a delta T of 20°F. (T supply minus T return), divide the total Btu/hr capacity of the loop by 10,000. This gives the Flow Rate in gallons per minute (GPM)
  10. Many levels of control are available today for hydronic systems. Runtal Radiators will provide nice, even heating whether operated by a simple thermostat to baseboard loop system, or an advanced boiler reset controller with motorized mixing valves, constant circulation and 2-pipe distribution.

Operation & Maintenance (PDF)

Radiator Maintenance

Radiator Maintenance

  1. Hydronic system maintenance should include routine checks for piping leaks (usually indicated by frequent makeup water), and a yearly diagnosis of the system water pH to evaluate its corrosive potential.

  2. Internal radiator maintenance depends entirely on the system water makeup and proper venting. Hydronic system additives are available to passivate and protect against freezing. These additives will not significantly reduce the output of Runtal Radiators.

  3. External radiator maintenance consists of keeping the surfaces clean, and any paint nicks or deep scratches painted with touch-up to prevent any surface rust.

  4. Radiators can be painted after sanding with fine grit paper to dull the high gloss and by wiping with solvent or a tack rag. Use only oil-based enamel paint (alkyd, acrylic, urethane, epoxy) – do not use latex or lacquer paint. Use urethane or epoxy enamel for radiators located in harsh environments. Spray the paint to achieve an even coating, and let dry completely before heating the radiator.

Operation & Maintenance (PDF)

Product Specifications

General:

Provide steel panel radiator elements of lengths and in locations as indicated, and of capacities, style and having accessories as scheduled. The wall hung vertical heating panel radiation shall be of one-piece all-welded steel construction, consisting of flattened water tubes welded to headers at the top and bottom. The radiator shall include an integral heavy gauge (0.09” minimum) all-welded perforated side grilles for both sides.

The radiator’s headers shall include all necessary inlet, outlet and vent connections as required. Standard connection sizes are ó” NPT tapered thread for supply and return piping, and 1/8” for the vent connection. Internal baffling is provided where required for proper water flow. Optional.” connections shall be available at an additional cost.

The radiant heating panels shall be available in heights from 2’-0” to 29’-6” in two inch even increments without the need for splicing. Appropriate wall mounting brackets shall be provided with the radiators, but additional wall bracing (if required) is to be provided by the installing contractor. Panel radiation expansion shall not exceed 1/64” per foot of radiation at 215ºF. The installer shall provide adequate expansion compensation for each radiator.

The panel radiation shall be manufactured in the USA.

 

Pressure Ratings:

Pressure ratings for the radiation shall be as follows:

STANDARD: Working pressure-56 PSI maximum, Test Pressure-74 PSI maximum

OR

MEDIUM: Working pressure-85 PSI maximum, Test Pressure-110 PSI maximum

OR

HIGH: Working pressure-128 PSI maximum, Test Pressure 184 PSI maximum

 

Finishes:

The panel radiation shall be cleaned and phosphatized in preparation for the powder coat finish. The radiation is then finish painted with a gloss powder coat finish, for a total paint thickness of 2-3 mils (0.002” – 0.003”). The color shall be selected from Runtal’s ten Standard Colors; or Runtal Optional Colors shall be available at and additional cost.

 

Warranty:

All Runtal radiators are covered by a 5-Year Limited Warranty.

 

Manufacturer:

Subject to compliance with requirements, provide flat tube panel radiation as manufactured by Runtal North America, Inc.

 

OPTIONAL ITEMS WHICH MAY BE ADDED TO THE SPECIFICATION:

  1. Ribbed pipe cover trims, finished to match the radiators shall be provided with the radiation.
  2. The radiation manufacturer shall provide combination shutoff valve/union fitting of less than two inches in width for the supply and return to each panel radiator, to be field installed by others.
  3. Runtal-Flex connectors shall be used where appropriate to provide expansion compensation for the radiators.

Product Specifications (PDF)

BTUH/ft Ratings

Heating Capacity

Correction Factors

Flow Rates

How To Determine Flow Rates

The flow rate through a Runtal radiator (or series of radiators) is dependent on the length of the radiator (or combined length of the radiator series), and the design Entering Water Temperature (EWT) and the design Leaving Water Temperature (LWT).

The designer picks the design EWT and LWT. For example, he might pick 170°F as the EWT and 150°F as the LWT. The median point between these two temperatures is called the Average Water Temperature (AWT), and in this example the AWT is 160°F.

The Runtal Heating Capacity charts are based on the heating capacity per foot of radiator, based on the designer’s chosen AWT, and this heating capacity per foot is expressed in units of BTUH/FT @ a given AWT. The required flow rate (GPM) is figured as follows:

Flow Rate = (Heating Capacity/Foot X Radiator Length)

DT –LWT) X 500]

The (EWT – LWT) is commonly referred to as the “Delta T”, or “DT”.

Therefore, our Flow Rate formula becomes:

GPM = (BTUH/FT X FT of Radiator) DT (DT X 500)

As an example, let’s say our designer needs 445 BTUH/FT capacity, over a
10′-0″ span of wall, and has chosen the design water temperatures as EWT = 170°F, and LWT = 150°F. This means our AWT is 160°F. Looking in the Runtal type “R” radiator Heating Capacity chart, we see that an R-4 radiator gives us the required 445 BTUH/FT at 160°F AWT. Therefore, the required flow rate for the 10′-0″ long R-4 radiator is:

GPM = (445 BTUH/FT X 10FT) DT (20°F DT X 500) = 0.445 GPM

Note that there are various combinations of EWT and LWT that can result in the same AWT. In our example above, for instance, a 180°F EWT and a 140°F LWT result in the same 160°F AWT. With Runtal’s unique flattened water tube design, Delta T’s of up to 60°F are possible without concern that the flow rate is too low for heat transfer (see the “Design Tips” section for more information).

As for a maximum flow rate for Runtal radiators, we recommend no more that 1.5 GPM per water tube. For our R-4 example above, this would mean a maximum flow rate of 6 GPM for an opposite end piped radiator, or 3 GPM for a same end piped radiator (see the “Design Tips” section for more information).

 

Pressure Drop: Opposite End

Pressure Drop: Same End

Pressure Ratings

Pressure ratings for the radiation shall be as follows:

STANDARD: Working pressure-56 PSI maximum, Test Pressure-74 PSI maximum
MEDIUM: Working pressure-85 PSI maximum, Test Pressure-110 PSI maximum
HIGH: Working pressure-128 PSI maximum, Test Pressure 184 PSI maximum

Detailed Specifications (PDF)

Mounting Systems

Wall Mounting

Finishes

The panel radiation shall be cleaned and phosphatized in preparation for the powder coat finish. The radiation is then finish painted with a gloss powder coat finish, for a total paint thickness of 2-3 mils (0.002” – 0.003”). The color shall be selected from Runtal’s ten Standard Colors; or Runtal Optional Colors shall be available at and additional cost.

Detailed Specifications (PDF)

Warranty

All Runtal radiators are covered by a 5-Year Limited Warranty.

Warranty (PDF)

Radiator Installation Instructions

Radiator Installation Instructions
Vertical & Ceiling Radiators

GENERAL NOTES – BOTH STYLES
Radiators are boxed together in as few crates as possible. A box of brackets is included as a separate piece, and it is marked to denote brackets. Inside the crates, each panel is wrapped in foam sheeting. Saving this foam to re-wrap the panel once it is wall mounted will protect it from construction site damage.

Each radiator is tagged with a label that indicates the project name, model type, color, connection code, bracket type & quantity and tag number. The tag number will usually designate a floor level and room number for easier placement on the job. Locate each radiator as required.


VERTICALLY MOUNTED RV RADIATORS
Carefully place each radiator face down on a smooth level surface (e.g. floor or table). Distribute the K11 wall brackets for each radiator. The tag on the radiator indicates the quantity of brackets. Mount the brackets securely on wall studs or solid backing, spacing them to match the horizontal wall mounting bars on the back side of the RV panel. There will be (2) K11 brackets per horizontal mounting bar. Make sure to mount the K11’s in far enough to avoid contact with the side perforated grille.

Allow a minimum of 3 inches below each panel radiator to facilitate cleaning and to assure proper output.


CEILING MOUNTED RC RADIATORS
RC model ceiling radiators do not come with any mounting brackets. Typically, installers use threaded rod with locking nuts to secure the panel to the ceiling structure. There are two mounting holes per cross-member stiffener on the back side of the radiator. Each of these mounting points should be used to suspend the radiator, to avoid sagging. It is typically easier to attach the threaded rods to the radiator before raising the assembly to the ceiling for final mounting. Once the radiator is securely fastened to the ceiling structure, adjust the nuts on the threaded rod to straighten and level the radiator. It is recommended to have at least 3 inches minimum from the face of the radiator to the finished ceiling above it. In cases where upward radiation from the back side of the radiator is undesirable, foil faced insulation can be placed in the cavities created by the perforated steel side channels.


ADDITIONAL INSTALLATION NOTES – BOTH STYLES
Thread the supply and return fitting into the connections on the radiator. The sealing tape or pipe dope used is the installer’s choice – make sure the connections are leak tight. One quarter turn past hand tight is usually sufficient. Each radiator needs to be fitted with a 1/8” air vent prior to startup.

Once the radiators are installed, the system can be tested to 50 psi. DO NOT OVER-PRESSURIZE THE RADIATORS as permanent damage may be done.

Standard Pressure Panels – Maximum 56 psi
Medium Pressure Panels – Maximum 85 psi
High Pressure Panels – Maximum 128 psi

Radiators expand a maximum of 0.016 inch per linear foot of length if heated to 215°F. Piping attached to the radiator must provide the necessary expansion compensation.

When the system has been shown to hold 50 psi maximum air, the piping and radiators can be filled with water. As water fills the system and radiators, air is forced to the vent fittings. Vent as much air as possible before turning on the circulating pump(s).

With the system is filled, operate the circulator(s) to force the remaining air to the high points of the system. Turn off the circulator(s) to vent the panels. Each radiator should be individually bled of air. Once cold venting has been completed, heat the system to design temperature and repeat the venting procedure as many times as necessary to remove all air from the system.

Radiator Installation Instructions (PDF)

Operation & Maintenance

Operation & Maintenance
For R, RF, R2F, R3F, RV, RC, UFLT and ThermoTouch

Hydronic Radiator Operation

  1. Radiators are manufactured in the USA of cold rolled low carbon steel and should be used only in closed closed hydronic systems to assure no corrosion of any system components.
  2. Proper radiator operation depends on adequate flow of water to the panel, which can only be accomplished when all the system air has been fully vented from the panels.
  3. Radiators should each be vented, with the system pressurized but in a static state (pumps off). Venting may need to be done periodically to assure a closed system.
  4. DO NOT OVER-PRESSURIZE RADIATORS:
    Most radiators are standard pressure construction. Standard pressure radiators should be tested with NO MORE THAN 50 PSI.
  5. Radiator Operating Pressure Ratings:
    Standard Pressure – 56 psi max (Tested at 74 psi)
    Medium Pressure – 85 psi max (Tested at 110 psi)
    High Pressure – 128 psi max (Tested at 184 psi)
  6. Radiators expand a maximum of 0.016 inch per linear foot of length if heated to 215°F. Piping attached to the radiator must provide the necessary expansion compensation.
  7. Flexible piping and elbowed piping are two simple ways to provide the 1/8 inch to 1/2 inch (typical) of flexibility required in expansion situations (usually series piping).
  8. Runtal Radiators require less flow rate than other hydronic heating products. If flow noise is apparent, balance the system until the noise is reduced.
  9. For a delta T of 20°F. (T supply minus T return), divide the total Btu/hr capacity of the loop by 10,000. This gives the Flow Rate in gallons per minute (GPM)
  10. Many levels of control are available today for hydronic systems. Runtal Radiators will provide nice, even heating whether operated by a simple thermostat to baseboard loop system, or an advanced boiler reset controller with motorized mixing valves, constant circulation and 2-pipe distribution.

Operation & Maintenance (PDF)

Radiator Maintenance

Radiator Maintenance

  1. Hydronic system maintenance should include routine checks for piping leaks (usually indicated by frequent makeup water), and a yearly diagnosis of the system water pH to evaluate its corrosive potential.

  2. Internal radiator maintenance depends entirely on the system water makeup and proper venting. Hydronic system additives are available to passivate and protect against freezing. These additives will not significantly reduce the output of Runtal Radiators.

  3. External radiator maintenance consists of keeping the surfaces clean, and any paint nicks or deep scratches painted with touch-up to prevent any surface rust.

  4. Radiators can be painted after sanding with fine grit paper to dull the high gloss and by wiping with solvent or a tack rag. Use only oil-based enamel paint (alkyd, acrylic, urethane, epoxy) – do not use latex or lacquer paint. Use urethane or epoxy enamel for radiators located in harsh environments. Spray the paint to achieve an even coating, and let dry completely before heating the radiator.

Operation & Maintenance (PDF)