Apr 15, 2008 5:18 pm
Just got some DGH installed in Canberra - Braemer with 2 zones (7 and 6 vents) and 2 spectrolink controllers.
The problem is that the heating is pumping out of the common zone, but the second zone I am not convinced if it is working. Hardly (if any) air is detectable from any of the second zone vents. I can blow harder!
I am holding off on the final payment ($500 from $5200), and the installer (a big burly bloke of course) is coming tomorrow to hava a fiddle, hoping to get paid afterwards. Their argument is that it is fine - a big house, so by the time the air gets to the second zone - the pressure would be less. I can blow harder than all of the second zone vents - and one of them is right under the heating unit.
The installer seemed very experienced, and the company is a salesman who subcontrats to installers over weekends.
Question: Is there an acceptable minimum flow, how can I measure it. How can I get a second opinion - can Braemer help me out? Is it acceptable for me to contact another company for a second opinion, and how much woudl that cost. Any guru's in Canberra?
MarkDHC - need your advice (or any one else here).
Re: Acceptable Installation of DGH? - Advice needed2
Apr 15, 2008 10:40 pm
I had two zones installed as part of my heating set up in the current house....I complained that I wasn't getting heat out of the study.... vent they said bovine excrement.
Anyway turns out that they installed the valve (for want of the right term) to enable the heating to be zoned into the study....but had not connected it to power and was in the closed position....!
One thing you can do is get someone at the controls to turn the zoning on and off, and someone in the zoned area, and try and hear for a mechanical noise coming from the heating vent, this should be the valve opening and closing. It won't be loud....I actually went into the roof space and found it and did the same trick.
Re: Acceptable Installation of DGH? - Advice needed3
Apr 16, 2008 12:57 am
Same kinda issue here.
It was a faulty valve in the zone control device.
It can take up to 1 minute for it to completely open and if after that you still have nothing you have a faulty control motor (valve) most likely...
Australia wide Local Call - 1300 130 336
Click here to look around: http://www.benq.com.au
Re: Acceptable Installation of DGH? - Advice needed4
Apr 16, 2008 1:48 am
but had not connected it to power and was in the closed position
I had same situation. aircon not working at all. everyone refused to believe me, no that cant possibly be bec!!, they then spent hours trying to source the problem everywhere but in the right place, only to find some switch not turned on?
Apr 24, 2008 5:24 pm
Thanks All for the suggestions - just an update.
Tradie came and reset the controllers - seemed to be a difference with the amount of air coming out of the ducts when the zone was on/off. He did finally agree that some of the furthest away ducts had a very small flow. The main/common zone does have a very high flow rate, some of the reasons being that it is closer to the unit and the ducts are larger than anywhere in the house (as the main area is quite large).
We decided that he will be coming in this weekend, and placing a manual damper into the common zone (just after the first Y junction from the unit), and we will use this damper to manually attempt to balance the airflow – so that not too much pressure will be going into the main/common zone – and hopefully increased pressure to the other zone (with the far reaching ducts) when that zone is operational.
Will let you know of the outcome.
Things I have learnt so far
- Important to be able to balance air flow some how
- Good idea for very large houses (like mine) to centrally locate the unit (mine is in the ceiling) to avoid long runs, commonsense
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