RTH7600D "170" setting


  #1  
Old 11-14-13, 02:34 PM
C
Member
Thread Starter
Join Date: Nov 2013
Location: United States
Posts: 76
Upvotes: 0
Received 0 Upvotes on 0 Posts
RTH7600D "170" setting

I'm trying to tweak my RTH7600. I understand the 240 "cycles per hour" setting. What I don't understand is the "170" setting. How does the thermostat behave based on this setting? I have a hydronic system ("hot water" boiler). What does the thermostat do differently on this setting from other settings?

Thanks!
 
  #2  
Old 11-15-13, 06:43 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 6,532
Received 95 Upvotes on 88 Posts
It looks self explanatory. A heat pump energizes the compressor terminal for heating and cooling, an electric heat setting energizes the fan circuit for heating as well as cooling, gas heat energizes the fan circuit for cooling. Your application will not energize a fan circuit.


 
  #3  
Old 12-18-13, 03:41 PM
C
Member
Thread Starter
Join Date: Nov 2013
Location: United States
Posts: 76
Upvotes: 0
Received 0 Upvotes on 0 Posts
I agree. The reason I ask is that I can't see the subtle difference between the 3 and 5 setting. Honeywell CS was not helpful.
 
  #4  
Old 12-18-13, 06:16 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 6,532
Received 95 Upvotes on 88 Posts
I would set option 170 to 3 for that application.
 
  #5  
Old 12-18-13, 06:23 PM
C
Member
Thread Starter
Join Date: Nov 2013
Location: United States
Posts: 76
Upvotes: 0
Received 0 Upvotes on 0 Posts
ok, thanks. I was interpreting "3" as possibly forced hot air, with "5" as FHW. Could "5" be radiant heat?
 
  #6  
Old 12-18-13, 07:32 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 6,532
Received 95 Upvotes on 88 Posts
I meant 5.

5 is also series 20 with higher end Honeywell stats. I see no mention of 3 wire valves in this stat manual.
 

Last edited by Houston204; 12-18-13 at 09:34 PM.
  #7  
Old 12-19-13, 02:45 AM
C
Member
Thread Starter
Join Date: Nov 2013
Location: United States
Posts: 76
Upvotes: 0
Received 0 Upvotes on 0 Posts
Ok, thanks for the follow-up. I checked my email from Honeywell and they said to choose 5, but I could pick 3 if the system was short-cycling. I asked for more information/clarification and all I got was some vague commentary!

I will set to 5. Much appreciated.

ps - I'm using a CPH (240) setting of 3. That seems to be the consensus in other threads in this forum.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: