New Model Pentair MasterTemp Heater

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Jumper the firemans switch terminals together at the heater. No need to connect this to the IC. The only connection is the RS-485 wires.

--Jeff
 
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Turbo1Ton said:
Jumper the firemans switch terminals together at the heater. No need to connect this to the IC. The only connection is the RS-485 wires.

--Jeff
Click to expand...
Is there any preferred RS-485 outdoor / shielded rated cables folks like to use so I can order some more?
 
The guide says to use the black wire, but I don't think that it is necessary.

You can get 4-wire cable or 2-wire cable.

The 4-wire cable will allow you to connect the black, so that requires 3 total wires.

If you are just going to connect the Yellow and green data wires, you can get 2 wire cable.

www.homedepot.com

Southwire By-the-Foot 22/2 Gray Stranded CU CL3R Shielded Security Cable 57572199

The Southwire Gray 22/2 CL3R Security Wire is suitable for interconnection of electrical devices within a security or fire-protective signaling system. This wire is suitable for use in either dry or damp
www.homedepot.com

It's probably safer to get the 4 wire cable just in case adding the black wire makes a difference.
 
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So, new board did not do anything to correct the Cool Down mode issue. Heater will run through the cool down mode just fine, when not connected to the RS-485 bus, but when communicating with the IntelliCenter, it will not ever exit Cool Down mode.

@tomas21 - Would be curious to hear if you are seeing the same issues.

--Jeff
 
Turbo1Ton said:
So, new board did not do anything to correct the Cool Down mode issue. Heater will run through the cool down mode just fine, when not connected to the RS-485 bus, but when communicating with the IntelliCenter, it will not ever exit Cool Down mode.

@tomas21 - Would be curious to hear if you are seeing the same issues.

--Jeff
Click to expand...

Hi Jeff,

I don't think I can perform the cool down test until our plumber adds the Spa Bypass valve near our heater that was missed during the pad plumbing installation. (Hopefully I can test within next month or so)

I will perform the following test on our Pentair MasterTemp 400 mfg 5/2021 with the latest Intellicenter i10PS after our spa bypass is plumbed and wired to the MasterTemp 400.

Test 1 (Heater Bypass with intellivalve wired up to MasterTemp port on board (BP_VLV Connector) and RS-485 from heater control board to free com port on IntelliCenter)
  1. Connect RS-485 from MasterTemp 400 control board to a free com port on the IntelliCenter
  2. Reconfigure IntelliCenter to make sure it is seeing the MasterTemp 400 via the RS-485 vs. the previous 2-wire setup
  3. Reconfigure MasterTemp 400 to enable the BP-VALVE (By-pass Valve)--
    When the BYPASS VALVE feature is enabled and there is a call for heat, the by-pass valve closes to allow
    water to flow through the heater. It takes 30 seconds for the bypass valve to rotate to the closed position. This allows
    the valve to complete rotation so there is sufficient water flow and pressure to prevent the water pressure switch from
    trigging an error. When the call for heat ends, the water flow continues through the heat exchanger for a cool down
    period of one minute. After the cool down period, the by-pass valve will rotate so that water no longer flows through
    the heater.
  4. Make a call for heat from the IntelliCenter or Pentair app for our spa
  5. Confirm the Bypass valve turns to correct position, heater turns on and starts producing heat in spa
  6. Turn off heat for spa, monitor the cool down period and then confirm that the valve open's to "bypass the heater"
    1. Monitor to see results to ensure heater exits cool down stage and opens bypass valve when complete
Note: I will be wiring up the RS-485 to control the heater in the coming week and off the current 2-wire fireman setup (fireman will be set back to its jumper configuration on the heater)
 
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tomas21 said:
Reconfigure MasterTemp 400 to enable the BP-VALVE (By-pass Valve)--
When the BYPASS VALVE feature is enabled and there is a call for heat, the by-pass valve closes to allow
water to flow through the heater. It takes 30 seconds for the bypass valve to rotate to the closed position. This allows
the valve to complete rotation so there is sufficient water flow and pressure to prevent the water pressure switch from
trigging an error. When the call for heat ends, the water flow continues through the heat exchanger for a cool down
period of one minute. After the cool down period, the by-pass valve will rotate so that water no longer flows through
the heater.
Click to expand...

Didn't realize yours wasn't 100% complete yet.

FYI - You have to set this up in the heater menu, prior to wiring up the RS-485. Once the RS-485 is detected, you cannot access the heater menu any longer.

Will be curious to see your results. I checked this morning and at some point, the heater finally came out of cool down mode. The display only said off and had quit flashing between off and cool down on the second line. I am going to run my heater for a bit today, and note when I turn it off, then check every 30 minutes to an hour to see when it goes off.

--Jeff
 
Turbo1Ton said:
Didn't realize yours wasn't 100% complete yet.

FYI - You have to set this up in the heater menu, prior to wiring up the RS-485. Once the RS-485 is detected, you cannot access the heater menu any longer.

Will be curious to see your results. I checked this morning and at some point, the heater finally came out of cool down mode. The display only said off and had quit flashing between off and cool down on the second line. I am going to run my heater for a bit today, and note when I turn it off, then check every 30 minutes to an hour to see when it goes off.

--Jeff
Click to expand...
Jeff - If I ever need to change the bypass configuration on the heater what has to be done once the RS-485 is wired up?

I finally got all our plumbing parts and will be re-configuring our heater to RS485 to the IC and the bypass will be installed.
 

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You have to disconnect the RS485 wires at the heater control board, in order to access the heater menu. Then you can scroll through the selections and enable the bypass. Then reconnect the RS485 wires and it should be good to go.

--Jeff
 
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Wonder if there is any harm enabling it, wiring up the rs485, and then in a week or two our plumber is coming to add bypass.... or just wait to enable it since he has to attach the intellivalve to the heater board.
 
Wired up RS485 to heater and intellicenter
Validated that communications are good and intellicenter can control heater
Bypass is enabled but plumbing and valve coming soon

@Turbo1Ton I am seeing the same cool down situation where after heater is turned off.... heater panel indicates heater off and keeps flashing cool down but hasn't come out of it yet.

Cool to see what IntelliCenter shows as possible notifications on app, web, and intellicenter LCD from heater with RS485 control...

1642629739220.png
 
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After a couple hours I got the first notification from the heater yesterday and subsequent ones today.

Testing today
  • I am going to test the cool down again to see how long it takes to come out of cool down.
  • Also going to see if I can coorelate anything to the timing of these communication lost notifications

Notification DateNotification TimeErrorStatus
Wednesday, January 19, 20224:56 PMMasterTemp: Communication LostActive
Wednesday, January 19, 20225:01 PMMasterTemp: Communication LostCleared
Thursday, January 20, 202212:06 AMMasterTemp: Communication LostActive
Thursday, January 20, 202212:16 AMMasterTemp: Communication LostCleared
Thursday, January 20, 20225:36 AMMasterTemp: Communication LostActive
Thursday, January 20, 20225:41 AMMasterTemp: Communication LostCleared
Thursday, January 20, 20226:01 AMMasterTemp: Communication LostActive
Thursday, January 20, 20226:06 AMMasterTemp: Communication LostCleared

Questions
  • Anyone know if there is a bug in the cool down when utilizing RS485 configuration with newer Mastertemp and IntelliCenter?
  • Anyone getting periodic communication lost errors when using RS485 with Mastertemp & IntelliCenter?
 
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I think there is an issue with the intellicenter and losing comms with things. I had my notifications set up for all my devices when it was first installed, and it was flooding my inbox with lost comms emails. I turned off the lost comms selection and I set a rule to move all of those emails to a specific folder and I don't even check that folder any longer. Kind of a useless feature IMO, because Pentair can't get it right.

--Jeff
 
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Would be interested on your findings on how long it takes to come out of cool down. I have attempted it several times but lose interest and forget to keep checking after several hours.

I know that when using the heater standalone, the cooldown works as described in the literature. When connected via RS485, it seems to hang.

--Jeff
 
Turbo1Ton said:
Would be interested on your findings on how long it takes to come out of cool down. I have attempted it several times but lose interest and forget to keep checking after several hours.

I know that when using the heater standalone, the cooldown works as described in the literature. When connected via RS485, it seems to hang.

--Jeff
Click to expand...
When you have it connect via RS485 what settings do you have in two areas in the IntelliCenter?

I turned off the heater cool down delay in Advanced settings and to if things improve and it shuts down in 5min based on the Heater setting only... Did not help.

Advanced Settings - Heater Cool Down delay
1642702870888.png

Heater Settings - Cooldown Delay
1642702944092.png
I
 
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Yeah, I noticed no difference when adjusting the heater cooldown delay in the IC. I set it to 1 minute at first, to mimic what the heater control board is supposed to do. Then 5 minutes, then 0 minutes. Nothing seems to allow it to turn off the cooldown mode when connected.

Advanced settings Heater.jpgHeater config.jpg


--Jeff
 
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@Turbo1Ton What settings do you use for your heater bypass intellivalve... I noticed in the documentation for the heater bypass the following.
- When the heater is on they want it at 0 degrees so all water is flowing through heater
- When the heater is off they want it at 7 degrees, so still a large portion of water in still going through heater but some through valve bypassing they heater
 

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