IM 950-1 / Page 26 of 38
Specifications
Electrical Rating:
• 24 VAC (18 to 30 VAC)
• 1 amp maximum per terminal
• 4 amp maximum total load
• 60-minute power backup for clock
Temperature Control Ranges:
• 45
o
F to 90
o
F, Accuracy: ±1
o
F
System Configurations:
• Single stage heat, single stage cool or single stage
electric heat pump
Terminations:
• RC, RH, C, W, Y, O, B, G
Figure 24. 7-Day Programmable Thermostat
(107095901), and optional remote sensor
(107096001)
Thermostat Dimensions – 107095701,
107095801, 107095901
Remote Wall Mounted Thermostats
NOTICE
When using existing thermostats by others;
There are two basic types of thermostats manufactured
today; those with relay contacts, and those with solid-state
triacs. If you open the thermostat and don't see relays
then you can assume it to be solid state.
Manufacturers of solid state output thermostats include
loading resistors on their installation kits. These are of
low Ohm value, approximately 560 Ohm and 3W. The
resistors are meant to load the thermostat outputs in order
for the output voltage to be either 0 or 2VAC, i.e. no
floating voltage. These resistors are connected from W, Y,
G to common (C), respectively. Therefore, if you are using
existing solid-state thermostats, you may have to add
loading resistors for your PTAC controls to work properly.
McQuay thermostats do not require this modification.
