Note: Data will be added on this post only.
As some may know, calls to the aux heat strips on this unit can be disabled via SW2-5 without affecting the W1 call that shuts off /bypassed the de-super water heater (DW).
Why do I care: To know how the home is performing, thus to better decide how much money to spend, if any, to improve it vs how much I might be wasting on aux heat strips. As well, it establishes a baseline for tracking the results of changes. Wind is a complication.
Why might you care: Baseline for crude comparison against your own system, and some have asked for the data.
Other benefits: I'd thought for a time this would allow setback programming, but maybe not. You get so spoiled w/these things you forget how slow HP's recover, and close to balance point recovery is MIA. We shall see. I won't get many colder days. Once I have a better handle on this I may try heating Zone 4 (un-insulated basement).
Target temps/Z (zone)
Z1 - main floor - 1,500sq. 74f
Z2 - master - 500sq. 73f
Z3 - 2nd floor - 1,200sq. 73f
Z4 - basement - 2,000sq. 70f (often unheated/"out". Duct loss etc holds 67f
Time . . OT . . Wind . . Load Sq' . . . . Status
24 hr . . . . . . . . . . . . zoned "In"/
CST. . . . . . . . . . . . . possible)
----- --- ----- ---------- -----------------------------------
23:00 . . 05f . 290@6 . 3200/5200 . . All zones@target temps, Y2 w/int. upshift to Y1
01:20 . . 04f . 290@8 . 3200/5200 . . Z1 down 1f, steady Y2 right now, no W1
03:15 . . 03f . 300@3 . 3200/5200 . . Z1,2, and 3 down 1f, Y2, no call for W1 (aux) yet, imminient.
08:00 . . 13f . ?? . 3200/5200 . . Z1-3 down 1, W1. Z4 turned on.
19:00 . . 22F .200@12 5200/5200 . . Z1-3 down 1, W2, and Z4 only 67.
Nightime Y2 balance point in low wind, 3200/5200 load appears to be apprx 4f.
W1 (bypassing DW) will deliver roughly 9% more BTU wo/ heat strips. (per WF.. Is this true?)
69 degree temp offset from apprx 54000 btu w/available 60,000 suggests balance point of -03f (assuming linear home performance).