Everything Caravans - Adventure Upgraded
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$174.95
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4995
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Autoterm Silent Pump (Super Quiet) for Diesel Air Heater 2D
Silent metering fuel pump TH-11
Assembly number: 4995
Voltage: 12V
Fuel dose per 100 ticks: 4.4 ml
The TH-11 is a low-noise 12V diesel fuel pump compatible with various AUTOTERM heaters. It offers near-silent operation compared to standard diesel heater pumps, which typically produce some sound during use.
Features
- Designed for AUTOTERM Air 2D air heater
- Compatible with engine pre-heaters: BINAR-5S (Diesel), BINAR-5S, AUTOTERM Flow 5D / 5B
- Fuel delivery rate: approximately 4.4 ml per 100 ticks
- Assembly number: 4995
- Operates on 12V power supply
- Quieter operation compared to standard diesel fuel pumps
- Can be used on some Chinese heaters if pump stroke/pulse rate is adjustable – delivers about twice the flow rate of typical Chinese pumps
Usage notes
- Ensure your heater can adjust fuel pump stroke or pulse rate before fitting
- May cause increased smoke if pump rate is not properly adjusted
- Not officially recommended for non-AUTOTERM heaters
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Replenisher
Exactly as ordered
Athol Gee
Toilet refresh kit
Great product, hubby found it quite easy to install.
Marilyn Morris
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Matthew Thompson
great to deal with. fast postage. not the same as my old ones. but hopefully I can fit them.
Wayne
Great service and shipping
Great service and shipping time
Anonymous
Right item, right price
Very simple process to remove old and install new. Did the job perfectly.
Brian Gordon
Dometic fridge shelf
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Jim Caulfield
Quality product.
Amazing communication
Kevin Moore
1 Key System
Excellent solution to keepng everything on my caravan secure
Francina Addison (cardgrub)
Wonderful
Everything as expected like the old days
Brian Gadd
Repairs
Our pairs arrived in a timely manner and were perfect
Debra Miller
Great Service
Very happy with the follow up service , the delivery was excellent and the communication to track my goods was great
Gregory Colin fisher
Had to be the fastest shipping iv ever received from interstate! Great product too
josh Jenkins
window struts
Clear instructions on measuring correct sizing, fast delivery, easy to fit, great shipping updates.
Craig Saint
Thanks!
Jo Penrose (twofatwombats)
m
We are pleased to say that with some tweaking and investigations, we can report this works well on our unit.
The old pump that came out is labelled as a "HD-20 22-12V".
To work out what frequency range the new pump needed to work at, we measured the delivered fuel of the old and new pumps in a syringe over 200 "ticks" of each pump. The new pump is capable of delivering a lot more fuel than the old one - if you install this pump on a chinese heater with the OEM pump above, you WILL overfuel your heater, and it will most likely pour out white smoke as a result/flood your unit, or otherwise be dangerous!
The old pump measured approx 5mL of fuel over 200 ticks, and the new measured approx 9mL (almost twice as much fuel delivered). We went into our advanced settings (google this to work out how - Pin 1688 on our model heater). The factory frequency for our heater was Low Limit -1.6Hz, High Limit 5.5Hz. We simply halved this to Low 0.8 (which is the lowest this model can go, luckily!), and High 2.7Hz. We did not change the fan settings, as these also affect the combustion fan, as well as the air blower fan - leave these as-is!
The heater started up first go (after blowing a bit more smoke than normal, due to my priming/measuring testing), and we have tested the temps at the exhaust and hot air to be within spec (~220 deg C exhaust max on high setting, 85 Deg C max on hot air outlet/piping). The exhaust temps drop a bit on the lowest setting - not sure if this is normal, or if further tweaking is needed to exactly match the delivery math.
Since the fuel delivery wasn't *exactly* double from old to new pump, halving the frequency has likely to have resulted in a slightly lean mixture, but various other sites report that this just means you will be blowing colder air through the exhaust (whether this is detrimental to the heater life span I do not know), but heater is running fine on low/high, and everything in between.
Highly recommend the pump - just make sure you do your own fuel delivery calcs if you want to use this pump, as it has much higher delivery capability than what the unit originally had!
Oh - and its also much quieter ;-)
J
Thank you Everything Caravans for your unbelievable communication re updates on the shipping of my part. Shipping was fast. Cost was very reasonable. Great quality product. Would definately refer you to other buyers or customers. Thank you very much for a super smooth transaction.
M
The team at Everything caravans were Extremely helpful and were quick to process my order to get my customer back on the road again.
G
Received great service with a quick response
S
I purchased an Autoterm silent diesel heater pump for my Chinese diesel heater. After accessing the advanced settings for the heater it seems to work extremely well. And yes it is almost silent. I’m very happy.
g
Found David to be extremely courteous , friendly and helpful to enable me to get my diesel heater operational. Reception staff also very polite.Would highly recommend them.
M
This pump worked great and is very quiet .
P
Great pump
j
You can not hear it operating