Welcome, Guest. Please login or register.
Did you miss your activation email?

Username: Password:
Pages: 1 [2]

Author Topic: Duct blower speed different using heat pump vs. boiler  (Read 4568 times)

mlappin

  • Fabricator Extraordinaire
  • Global Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 4140
  • OWF Brand: homebuilt, now HeatmasterSS
  • OWF Model: Martin Steel Works Gen 1 then, now a G200.
  • North Liberty, Indiana
    • View Profile
    • Altheatsolutions
Re: Duct blower speed different using heat pump vs. boiler
« Reply #15 on: December 25, 2016, 09:03:48 PM »

Need to know if the AC needs both the Y and G wire, there is a way around that as well with the use of an aqua stat and a 24 volt fan relay or two.
Logged
Stihl 023
Stihl 362
Stihl 460
Sachs Dolmar 112 and 120
Homemade skid steer mounted splitter, 30" throat, 5" cylinder
Wood-Eze model 8100 firewood processor

HeatmasterSS dealer for Northern Indiana

schoppy

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 377
  • OWF Brand: Heatmaster
  • OWF Model: G200
    • View Profile
Re: Duct blower speed different using heat pump vs. boiler
« Reply #16 on: December 25, 2016, 10:05:01 PM »

Mlappin that is how I have mine set up but I only use one T-stat. My surface sensing aqua stat opens the circuit to my Geothermal compressor when the water temp is above 130. I have a variable speed ECM motor on my high efficiency LP furnace which is my air handler for my Geothermal and second backup heat source as well. Works very well. 
Logged
Husqvarna 562XP
Echo CS-361P
Echo CS-310
31 ton splitter

shepherd boy

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 365
  • OWF Brand: HeatMaster
  • OWF Model: C375
    • View Profile
Re: Duct blower speed different using heat pump vs. boiler
« Reply #17 on: December 26, 2016, 03:47:19 AM »

I have not got a pic from Bluegrass of the circuit board but I'll assume that this is a single compressor system.If duel compressor there is a Y2 terminal to deal with.  In the south I have seen installers struggle with these heat pump systems and would like this discussed. Here is how I would do it:   Use a 90-340 relay. Let the second stat power the relay and power terminal #3and #6. terminal #4 put a green wire jumper to G on board. original green wire goes to #5 which creates a normal closed circuit. When it trips will power the G.   #1 terminal gets a jumper to the Y on board. Original stat yellow and yellow from compressor go to #2 terminal.This is also the normally closed circuit. When the second T- stat it powers G and Y fan goes to 100%. Should the original want to back up the wood stat it can at any time as the yellow from the original stat is still connected to the compressor yellow. The fan is already on high. This hookup only takes a 90-340 relay.

We have done a bunch of these and they seem to work good, but there may be something better.

If you are using the Y2 or YO  on the board  a Different setup is needed.

 
« Last Edit: December 31, 2016, 04:08:52 AM by shepherd boy »
Logged
Let the youngin's have it
 Gettin' old and lazy
 Lookin' for the next good fishing hole

Bluegrass Wood Burner

  • Full Member
  • ***
  • Offline Offline
  • Posts: 218
  • OWF Brand: Ozzark Biomass
  • OWF Model: Gasconade 500 gallon
    • View Profile
Re: Duct blower speed different using heat pump vs. boiler
« Reply #18 on: December 26, 2016, 05:15:00 AM »

I will get my son in laws father to tackle this when he is over this way. All this is way above my head. I sure appreciate all your help on this. I'll update when we do it.
Logged
South central Kentucky
Ford F-150
16 ft tandem trailer
3000# winch
Husqvarna 142
Husqvarna 460 rancher
6ft spud bar
Poulan 3314
22 ton lowes splitter
Timberline sharpener
"Worn out body"
Pages: 1 [2]