Replies

1. 
   David_W_ | Jan 12, 2001 06:27am | #1

   *
   Easy on the hemp jokes...

   I never can figure out those spellcheckers

   David

1. 
   Nick_Pitz | Jan 12, 2001 01:10pm | #2

   *David - No offense, but your question is a little vague. Some boilers are made to accept low return water temps and some are not. Also almost every boiler is piped differently. But the most common way of increasing the return water temperature is to install a pumped bypass that circulates water straight from the hot side to the cold side. This mixes with the colder return water and raises the temperature. Are you planning on having the floor and the baseboard on different zones? There is a large variety of ways to control a radiant zone, from expensive outdoor resets to simple manual mixing valves. More than likely, someone who can look at your house and what you want to do can help you figure out what you need.

1. 
   David_Thomas | Jan 12, 2001 11:59pm | #3

   *In a staple-up installation, you typically don't need a fancy thermostat. Either 24v for a relay or valve or line voltage if you are turning the pump on directly with whatever features you want (automatic set-back, 3F or 1F temperature differential, etc.). For a radiant slab with all of its thermal inertia, you definitely benefit from the tighter control of a 1F thermostat and one with an anticipator circuit that factors in outside temperature. -David

1. 
   tedd | Jan 14, 2001 06:32am | #4

   *AJ is the best guy to give advice on controlling hemp.

1. 
   peter_giles | Jan 15, 2001 12:18am | #5

   *Use a mixing valve to mix return water with hot water (output) I use Viessman part# DN20-65 manual or electronic. For hemp. control pick up a White Roger zone valve part # 1361.104 ,install on the "house side" of your mix valve. You run it off a 24V transformer I. have about the most complicated system anywhere designed by my brother in law. E.-mail me for more info. have to ask a question somewhere else in this section.

2. 
   The_Tennis_Court_Builder_...on_t | Jan 23, 2001 03:19am | #6

   *Tedd...You have a good lawyer?I would be a bit more careful of what I say if I were you...near the stream joking but not of you doing drugs too often and I would appreciate like actions in return,aj

2. 
   David_W_ | Jan 23, 2001 03:19am | #7

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   I'm looking for the correct method to connect my new radiant heat with my existing baseboard heat. I'm concerned with returning 120F water to my cast iron boiler. What is the usual method used to bring the hemp. back up to an acceptable range? (A schematic would be great) Also, I'm using staple up radiant heat and was wondering what is the best method for controlling room hemp. Any help is appreciated.