Per H2K User Guide 15.9-17.15.11 one cannot model a split type air to water heat pump in H2K for ERS purposes and must ask NRCan for special instructions. 17.14.9.2 won't help. I've contacted NRCan but no response yet. I also sent a note to the Canadian Sanden distributor on this, email string below. Short answer: no-one I know knows how to do this, including my EA mentor. Can anyone else please help?
Subject: RE: Modelling the SANCO2 in Hot2000 (Canada)
Date: July 29, 2020 at 11:17:36 AM PDT
To: Nigel Protter <nigel@shape.energy>
Nigel
Sorry for the delay but I have been trying to get a comprehensive answer for you
I just received this from someone with direct knowledge of the product in Hot 2000
It does appear because of the unique design of the product we cannot model directly with the program
I know NRCAN is looking at a different metric for split type water heaters but this is not available at the moment
Albert Rooks at Small Planet Supply in Vancouver is aware of this issue also
Currently only integrated heat pump hot water heaters (no outdoor unit, no vents to the outside) can be officially modelled in Hot2000. We have contacted NRCan a number of times about this issue but have not been provided with any guidance yet. In the meantime, it is
possible to model Sanden systems by first treating it as an integrated heat pump system and then modelling it again with an electric hot water tank with the same stand-by heat loss establishing this way how much energy the integrated heat pump is “stealing” from the heating system and how much it is “contributing” to cooling. The heating and cooling energy consumptions are then being corrected using those values since the Sanden system is a split system and therefore does not affect heating/cooling. This being said, this is not part of the official ERS energy modelling guidelines and therefore can’t be used for EnerGuide files. See highlighted sections of the EnerGuide Rating System HOT2000 User Guide Version 15.9. below.
John Miles
Eco2 Systems LLC
*****Note New Email***** john.miles@eco2systemsllc.com
Tel : 844 726 3262 x 403
Mobile : 213 400 7758
Web : www.sandenwaterheater.com