7
User Factory Setting
No. Options Default Options Comments
TUTUBHF
0.5
0.5, 1.0
4FMFDUBTUTUBHFUFNQFSBUVSF
EJGGFSFOUJBM
or 2.0 EJGGFSFOUJBMPGPS'
PS$
OETUBHF
2.0
1.0, 2.0,
4FMFDUBOETUBHFUFNQFSBUVSF
EJGGFSFOUJBM
3.0, 4.0
EJGGFSFOUJBMPGPS'
0OMZ
5.0 or 6.0
PS$
Table of User Options
Detailed Explanation of User Options:
Temperature Differential
(User Option 1 and 2)
5IFEJGGFSFOUJBMTFUUJOHJTUIFUFNQFSBUVSFDPOUSPMSBOHFUIBUZPVSUIFSNPTUBU
XJMMQSPWJEF5IFTNBMMFSUIFTFUUJOHUIFUJHIUFSZPVSSBOHFPGUFNQFSBUVSF
DPOUSPMBOEDPNGPSUXJMMCF5IFOETUBHFEJGGFSFOUJBMJTPOMZGPSTZTUFNT
XJUIBTFDPOETUBHFPGIFBUJOHBVYJMJBSZIFBU
6
Operating Your Thermostat
Setting the System Control Mode
5IF4ZTUFN$POUSPMIBTTFWFSBMNPEFTPGPQFSBUJPOUIBUDBOCFTFMFDUFECZ
NPWJOHUIF4:45&.TXJUDIUPUIFBQQSPQSJBUFQPTJUJPO
COOL 0OMZZPVSDPPMJOHTZTUFNXJMMPQFSBUF
OFF )FBUJOHBOEDPPMJOHTZTUFNTBSFPGG
HEAT 0OMZZPVSIFBUJOHTZTUFNXJMMPQFSBUF
Additional Switch Position (Model 1220 Only):
EMER 0QFSBUFTBCBDLVQIFBUTPVSDF&NFSHFODZ)FBUGPSIFBUQVNQ
TZTUFNTPOMZ
NOTE: If your model 1220 was configured for a
conventional system (CONV) then you will not have
the EMER (emergency heat) option and “NO EMER
SET” will flash in the display if EMER is selected
with the system switch.
Setting the Fan Control Mode
The Fan Control has 2 modes of operation – AUTO
and ON. The mode can be selected by moving the
FAN switch to the appropriate position.
AUTO 5IFTZTUFNGBOXJMMSVOPOMZXIFOZPVS
IFBUJOHPSDPPMJOHTZTUFNJTSVOOJOH
ON 5IFTZTUFNGBOTUBZTPO