Heating Help

Altherma great unit with competitors

@ September 25, 2010 11:19 PM in Daikin altherma air to water or gshp

Hello the Altherma is a great unit but there are options in the air to water field for less dollars.. www.aermec.us

Air to water heat pump with back up boiler

@ September 25, 2010 11:05 PM in Air to water heat pump with back up boiler

I want to use an air to water heat pump that can only handle return water of 120F with a supply of 130. I need to have the back up boiler operate at 135 on extremely cold days. Would a hydraulic separator allow me to use my heat pump at 120 return and pump into the separator while allowing the boiler to put out 135F when needed. I would want to do this as the heat pump is more efficient than the condensing boiler. Thanks for any input, Jim

Ice Rink

@ September 25, 2010 10:49 PM in Radiant heat under ice rink

Why not use a chiller that creates glycol to -8C and recovers the heat... free heat COPs go through the roof. Great way to do it. Aermec NRL with heat recovery, now available in North America

Aermec Heat Pump

@ September 25, 2010 10:45 PM in Daikin heat source

The new Aermec heat pumps operate to -20C 0r -4 F, provide 140F water so they can be used for heating, potable water, cooling, pool heating you name it. Availble up to 270 Tons with free cooling and 100 percent heat recovery on the units above 20 tons. Cool eh? Aermec

Heat Pump Name

@ April 6, 2008 11:47 PM in Hydronic Heat Pump Piping with Boiler

Aermec, you may see it on our website at http://www.mitsair.com

Piping a hydronic heat pump with a boiler

@ April 1, 2008 10:41 PM in Hydronic Heat Pump Piping with Boiler

Hello I am wondering if anyone has an idea how to control the following scenerio. I have a three ton air to water heat pump which will operate down to 5 degrees F. The heat pump and boiler will provide domestic hot water, in floor heating and supply water to fan coils. The heat pump will be installed with a backup in line electric boiler. The electric boiler will come on to help the heat pump when it cannot handle the load. The boiler may start helping out at 20F and will take over 100% below 5F I am looking for a few different ideas on how to control this. Notes: The heat pumps output water temperature is 132F and I cannot let the return water to the heat pump ever go above this or the heat pump will shut off on high head. So I need heat pump protection. The heat pump must operate as long as possible as it is very efficient. In summer the heat pump will switch to cooling mode producing chilled water and the boiler shall provide domestic hot water all year round. Thank You for thinking about this one Jim