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Hi again Does it matter which way the hoses are connected at the thermostat & water pump & also enter the heater ? See the photos below, both are totally different so I assume it doesn't matter ?
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On HQ and HJ there is a three way tap to turn water off from the heater when not in use. HX on have two hose tap.
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HQ without a/cond has no tap, the water in the heater flows all of the time.
Because you have an HX/HZ thermostat & water pump, you will need to eliminate the short by-pass hose which runs from the thermo housing to the water pump. It is effectively 'shorting out" the heater & you will be getting virtually no flow thru the heater & no heat as a result.
The 3-way tap only applies to HQ with factory a/cond & HJ with a/cond or forced air ventilation.
Dr Terry
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Originally Posted by: Warren Turnbull On HQ and HJ there is a three way tap to turn water off from the heater when not in use. HX on have two hose tap.
Thanks Warren, Mine & the 2 pics I shared dont have a tap al all. I was going to use a 2 way on mine Does it matter which way the hoses go ? and whilst on that, does it matter which hose the tap does go in ?
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Originally Posted by: Dr Terry HQ without a/cond has no tap, the water in the heater flows all of the time.
Because you have an HX/HZ thermostat & water pump, you will need to eliminate the short by-pass hose which runs from the thermo housing to the water pump. It is effectively 'shorting out" the heater & you will be getting virtually no flow thru the heater & no heat as a result.
The 3-way tap only applies to HQ with factory a/cond & HJ with a/cond or forced air ventilation.
Dr Terry
Thanks Dr Terry So you are talking about the short hose in the pics I posted ?, how do I plumb the hoses without it ? or do I need to go to HQ water pump & single spigot thermostat ? Cheers
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Originally Posted by: Taztiger4
Thanks Dr Terry
So you are talking about the short hose in the pics I posted ?, how do I plumb the hoses without it ? or do I need to go to HQ water pump & single spigot thermostat ?
Cheers
Pre-HX water pumps have been NLA for decades. There are 2 methods to block off the water hose. You can buy 2 block- off caps (Mackay P/No. BC16) & cap off both fittings, eliminating the hose. Another method is that some water pumps have one of the outlets is threaded & suppled with a block plug when new, so they can be fitted to HQ/HJ etc. If your pump is threaded screw in a plug & refit the hose. Dr Terry |
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Originally Posted by: Dr Terry Originally Posted by: Taztiger4
Thanks Dr Terry
So you are talking about the short hose in the pics I posted ?, how do I plumb the hoses without it ? or do I need to go to HQ water pump & single spigot thermostat ?
Cheers
Pre-HX water pumps have been NLA for decades. There are 2 methods to block off the water hose. You can buy 2 block- off caps (Mackay P/No. BC16) & cap off both fittings, eliminating the hose. Another method is that some water pumps have one of the outlets is threaded & suppled with a block plug when new, so they can be fitted to HQ/HJ etc. If your pump is threaded screw in a plug & refit the hose. Dr Terry Cheers , so just remove that short pipe & use the 2 block- off caps ? or block off the water pipe outlet with the block plug & use the single spigot thermostat housing ? Edited by user Sunday, 17 September 2023 7:25:09 PM(UTC)
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Originally Posted by: Dr Terry Originally Posted by: Taztiger4
Thanks Dr Terry
So you are talking about the short hose in the pics I posted ?, how do I plumb the hoses without it ? or do I need to go to HQ water pump & single spigot thermostat ?
Cheers
Pre-HX water pumps have been NLA for decades. There are 2 methods to block off the water hose. You can buy 2 block- off caps (Mackay P/No. BC16) & cap off both fittings, eliminating the hose. Another method is that some water pumps have one of the outlets is threaded & suppled with a block plug when new, so they can be fitted to HQ/HJ etc. If your pump is threaded screw in a plug & refit the hose. Dr Terry It's easier than I thought. Thank you.
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Is there actually any point to doing this with the 2 5/8 hoses from pump to thermostat ?, would be neater & easier to block all 4 ports with the BC16 blanking caps Dr Terry suggested Edited by user Wednesday, 20 September 2023 10:51:01 PM(UTC)
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