Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 30-03-2017, 12:29   #1
Registered User

Join Date: Mar 2007
Location: MA USA
Boat: Pearson 365
Posts: 71
Multiple propane devices, multiple solenoids?

Hi I am installing a instant hot water heater from precision temp. It is a Marine unit designed for marine use and a ABYC compliant. It cost a fortune. Propane in external vapor proof locker with overboard drains.

My question is: I have a propane stove, I have a force 10 fireplace, each has its own solenoid shut off switch with an indicator light. Should the new hot water heater also have a shut off switch with an indicator light? Theory being if there was just one switch when the switch was open all three propane lines would be charged. As it stands now, Before I shut off my stove I shut off the switch at the stove and empty the charged line. I do the same for the fireplace. Confused if this logic applies to the Percision temp instant hot water heater. Should I have three separate solenoids and switch panels?
__________________

jpendoley is offline   Reply With Quote
Old 30-03-2017, 13:19   #2
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Toronto, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 3,701
Re: Multiple propane devices, multiple solenoids?

Please tell what model of heater you are talking about. I am ABYC certified and have never seen a Precision Temp unit that ABYC requirements. They do mention in their manual that it should be installed as per ABYC but provides no means of providing outside combustion air as required by those standards.
__________________

__________________
That hysterical laughter you hear as you sail a way in your "new" boat ..... is the seller.
boatpoker is offline   Reply With Quote
Old 31-03-2017, 06:43   #3
Registered User

Join Date: Mar 2007
Location: MA USA
Boat: Pearson 365
Posts: 71
Re: Multiple propane devices, multiple solenoids?

Precision Temp Showermate 55. Have read and understand the read, have used non marine water heaters in the past, but wanted the extra measure of confidence so I dropped significant $ for this unit. ABYC aside, what about my well reasoned question? One solenoid per device or one for all?
jpendoley is offline   Reply With Quote
Old 31-03-2017, 07:09   #4
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Toronto, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 3,701
Re: Multiple propane devices, multiple solenoids?

One solenoid for all. I also put a manual 90 degree valve for each appliance inside the locker, after the solenoid.
__________________
That hysterical laughter you hear as you sail a way in your "new" boat ..... is the seller.
boatpoker is offline   Reply With Quote
Old 31-03-2017, 07:11   #5
Registered User

Join Date: Aug 2010
Posts: 1,017
Re: Multiple propane devices, multiple solenoids?

I would err on the side of caution and follow the model already implemented, and use a dedicated solenoid per device.

The specifications do mention 'power vented', but the diagram doesn't show venting.

"Install to ABYC standards" sounds more like a generic recommendation than a statement that the device is ABYC compliant.
Shrew is offline   Reply With Quote
Old 31-03-2017, 07:20   #6
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Multiple propane devices, multiple solenoids?

Quote:
Originally Posted by boatpoker View Post
One solenoid for all. I also put a manual 90 degree valve for each appliance inside the locker, after the solenoid.
I don't think that's a good idea. All the lines would be pressurized when only one is being used. Each device should have its own solenoid and gas tubing to the device.
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 31-03-2017, 08:21   #7
Registered User

Join Date: Dec 2016
Posts: 710
Re: Multiple propane devices, multiple solenoids?

Check the flow requirements for these devices. Many installations require a separate regulator for each device.

My preference is ONE solenoid after the tank valve, then a regulator for each device. Every propane system failure that I've ever seen was caused by a faulty regulator. If the solenoid is after the regulator, it won't do any good. However, the solenoids that come in common kits may not be rated for the high-pressure side of the circuit, so it may take some careful shopping.
toddster8 is offline   Reply With Quote
Old 31-03-2017, 09:14   #8
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Multiple propane devices, multiple solenoids?

Quote:
Originally Posted by jpendoley View Post
Hi I am installing a instant hot water heater .......................
Why would you need to heat hot water ?
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 31-03-2017, 09:24   #9
Registered User

Join Date: Mar 2007
Location: MA USA
Boat: Pearson 365
Posts: 71
Re: Multiple propane devices, multiple solenoids?

Quote:
Originally Posted by Shrew View Post
I would err on the side of caution and follow the model already implemented, and use a dedicated solenoid per device.



The specifications do mention 'power vented', but the diagram doesn't show venting.



"Install to ABYC standards" sounds more like a generic recommendation than a statement that the device is ABYC compliant.


It is power vented through 2 inch exhaust port that is run through stainless pipe.
jpendoley is offline   Reply With Quote
Old 31-03-2017, 09:26   #10
Registered User

Join Date: Mar 2007
Location: MA USA
Boat: Pearson 365
Posts: 71
Re: Multiple propane devices, multiple solenoids?

Quote:
Originally Posted by rwidman View Post
Why would you need to heat hot water ?


having recently become single I had to move back aboard the boat on short notice. Come to think of it maybe cold showers are a good idea
jpendoley is offline   Reply With Quote
Old 31-03-2017, 09:44   #11
Marine Service Provider
 
Scott Berg's Avatar

Join Date: Jul 2011
Location: Aboard
Boat: Seaton 60' Ketch
Posts: 1,118
Re: Multiple propane devices, multiple solenoids?

I think the point is that you need a water heater, not a hot water heater. If you had hot water you wouldn't need to heat it!
__________________
Scott Berg
WAĜLSS
SV CHARDONNAY
Scott Berg is offline   Reply With Quote
Old 31-03-2017, 11:32   #12
Registered User

Join Date: Nov 2010
Location: Port Angeles, Wash.
Boat: 1967 Mariner 40
Posts: 28
Re: Multiple propane devices, multiple solenoids?

Scott, it's comments like yours that make me love this forum!! Larry.
Larry T. is offline   Reply With Quote
Old 31-03-2017, 12:53   #13
cruiser

Join Date: Jan 2012
Location: Lake Ontario
Boat: Douglas 32 Mk II
Posts: 2,722
Re: Multiple propane devices, multiple solenoids?

Quote:
Originally Posted by jpendoley View Post
Hi I am installing a instant hot water heater from precision temp. It is a Marine unit designed for marine use and a ABYC compliant. It cost a fortune. Propane in external vapor proof locker with overboard drains.

My question is: I have a propane stove, I have a force 10 fireplace, each has its own solenoid shut off switch with an indicator light. Should the new hot water heater also have a shut off switch with an indicator light? Theory being if there was just one switch when the switch was open all three propane lines would be charged. As it stands now, Before I shut off my stove I shut off the switch at the stove and empty the charged line. I do the same for the fireplace. Confused if this logic applies to the Percision temp instant hot water heater. Should I have three separate solenoids and switch panels?
No need for multiple solenoids. All lines are connected to the regulator. The pressure is distributed throughout all lines. When the solenoid is closed, with the appliance left operating, all lines are drained because they are all connected.

By adding solenoids and valves, now you introduce the possibility of leaving lines pressurized unintentionally.

Just remember to close all appliance valves, after the gas has run-out, else the next time the solenoid is opened, the gas at that appliance may be on.

Note that to be compliant, all solenoids, valves, and regulators must be in the over-board vented propane locker. You cannot have a connection in the boat, except at the appliance.

To the best of my knowledge the ShowerMate 55 is not ABYC compliant. I could print in 1/4-20 hex nut instruction, "Install in compliance with ABYC standards."
ramblinrod is offline   Reply With Quote
Old 31-03-2017, 13:41   #14
Registered User

Join Date: Feb 2015
Location: Currently in The Bahamas
Boat: Caliber 47
Posts: 163
Re: Multiple propane devices, multiple solenoids?

Why make this so complicated....one solenoid and one regulator with flow capacity high enough to supply all 3 devices at maximum consumption!

Add the BTU's consumed and buy appropriate regulator!

Greg
Caliber40 is offline   Reply With Quote
Old 31-03-2017, 20:27   #15
Registered User

Join Date: Mar 2007
Location: MA USA
Boat: Pearson 365
Posts: 71
Re: Multiple propane devices, multiple solenoids?

Sorry it's called showermate 550M designed for marine install. If properly installed and vented and the fuel is properly supplied it seems to meet all the reqs.
This is the thread drift that I was trying to avoid, but I also got my question answered: only one solenoid required. Possible need to resize the regulator was a surprise but good to know-thanks to everyone I'll be able to shower aboard soon-thank you!
__________________

jpendoley is offline   Reply With Quote
Reply

Tags
propane

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Possible to use same terminals for multiple NMEA 0183 devices? Deep6 Marine Electronics 29 12-02-2017 11:56
Tracking and plotting multiple GPS devices BrianCarrollr OpenCPN 35 01-12-2016 13:32
GPS For Multiple Devices Via Bluetooth Jd1 Marine Electronics 19 19-09-2016 06:24
Latest propane solenoids & sensors? Roy M Plumbing Systems and Fixtures 0 25-06-2015 08:22
Anchor solenoids Haforn Electrical: Batteries, Generators & Solar 16 02-12-2006 12:08



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:54.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.