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2015 Archived Messages


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MONTHDATEDATEDATEDATEMONTHDATEDATEDATEDATE
January 1-7 8-14 15-21 22-31 February 1-7 8-14 15-21 22-28
March 1-7 8-14 15-21 22-31 April 1-7 8-14 15-21 22-30
May 1-7 8-14 15-21 22-31 June 1-7 8-14 15-21 22-30
July 1-7 8-14 15-21 22-31 August 1-7 8-14 15-21 22-31
September 1-7 8-14 15-21 22-30 October 1-7 8-14 15-21 22-31
November 1-7 8-14 15-21 22-30 December 1-7 8-14 15-21 22-31

22—30 September

From: Bill Gardiner
To: Orchid Talk List
Subject: Parwin heater
Date: Fri, 25 Sep 2015 20:55

Have been using parwin heaters for years to heat my orchids and occasionall
y I have had to replace the thermostat control unit. I now need another uni
t but parwin can no longer supply the electric version . (This being more a
ccurate than the capillary version.)so I am asking if anybody knows where I
could obtain one that would work on a parwin heater2C (hopefully one tha
t would be more reliable)
Thanks2C
Orchid Bill.

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From: hilary hobbs
To: Orchid Talk List
Subject: Re: [OrchidTalk] Parwin heater
Date: Sat, 26 Sep 2015 10:25

Dear Bill

Simply Control sometimes can repair Parwin heaters and thermostats
It may be worth giving them a ring on 01796 482128.

Good Luck

Hilary

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From: Bill Gardiner
To: Orchid Talk List
Subject: Re: [OrchidTalk] Parwin heater
Date: Sat, 26 Sep 2015 19:40

Dear Hillary

Thanks for info about simply control

Orchid Bill.

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From: Geoff Hands
To: Orchid Talk List
Subject: Re: [OrchidTalk] Parwin heater
Date: Sun, 27 Sep 2015 03:20

I never use the thermostat supplied as part of an electric heater ( or cooler, for that matter) . They never seem to be even reasonably accurate.
I have two large cold frames, and also a "wall frame" which I use now for my Disas, maybe for some Pleiones in the Spring, and to rest my Dendrobiums cold and dry as compared to the main greenhouse, , and all three are heated by the industrial type 2 kW fan heaters which Two Wests sell. In each case I use a Bio Green Digital Thermo-1 Thermostat , which has a probe on a wander lead which I can locate in whatever seems to be the best place to sense the temperature.
So I switch the heaters to full power ( they can be set at ¼ , ½ or full), turn the heater stat up to the maximum, the fan up to full speed, then plug into the Thermo-1. When the temperature is above the one set on the stat, the fan and heater is off, and as soon as the temperature drops below that, it comes on.Which means in practice that It comes on for a few moments almost, then goes off again − at least, unless and until there is a hard frost outside !
I have just been doing a test run , since some of the hard cane type dendro' have completed their growth, and will be going out soon, from the main greenhouse into one frame. I have set the stat for that one to 6 degrees. We have had garden temperatures down to 4.8 so far, and that frame has remained above 6, but not far above. ( Of course, the various sensors all read slightly differently − I have a 5 sensor bluetooth temperature set, giving me readings for garden, greenhouse, and garden frames, in my bathroom, so that I can see that everything is OK in the middle of the night, without going out. I have checked this out, as an experiment, putting all 5 sensors in the same zone , and shown that they vary by a small amount ).

I suggest that you simply remove your Parwin stat, and wire the heater and fan into a 13A plug, and plug into a Thermo -1 which in turn you plug into your mains supply.

On a similar topic, I had to replace the boiler in the main greenhouse − 11 years use, in what is a harsh environment for modern electronics − and this time, with the new boiler I put in a smartstat , actually a Heatmiser one. This is wifi connected to my home network, and I have the Heatmiser app on my smartphone and also on my iPad. This means that away from home − even on the other side of the world, as long as I have a wifi connection, I can check the temperature in the greenhouse, turn it up, or down, re-programme it ( can't imagine why I would want to do that actually) and if it seems that something has failed − although the boiler set-up came with a 10 year guarantee − then ring a neighbour and ask them to go and look and maybe put a fan heater in or whatever.peace of mind − worth quite a lot !
I have a similar installation in the house itself − this one is a Hive control, rather more sophisticated , since it can control the hot water system and the central heating separately . So we go away, and my wife says "did you turn the heating down/off? " And I say no, I forgot, and reach from my phone, and do it. Then when we leave the hotel or whatever, I turn it back on, or up or whatever. This modern world !

Geoff

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