ECR RetroAire R90C Installation, operation & maintenance manual - page 18
Start Up
1.
Verify unit is secure and level.
2.
Heat pump units only
— Verify thermostatic drain
pan valve is operating correctly. Valve should be closed
if temperature is above 60°F and open if temperature
is below 60°F.
3.
Test optional fresh air damper. Set damper door
switch to
"YES"
position, verify damper opens and
allows fresh air to be moved into space. Set damper
door switch to "
NO"
position. Verify flow of air into
space has stopped. Fresh air will only be available
when indoor fan is running.
4.
Verify
HP
jumper is set correctly for unit type. See
Figure 8, page 17.
5.
Set
TEST
jumper to
test mode.
Will disable time
delays, including anti-short-cycle and purge times. See
Figure 10.
6.
Verify unit is wired according to instructions, including
requirements on page 16.
7.
Connect Electric power to unit .
8.
Turn on unit to check for proper operation. Check con-
densate removal by pouring water into base pan, place
unit in cooling mode, and with condenser fan running,
verify water is picked up by slinger ring and thrown
onto outdoor coil.
NOTICE
Compressor will not start until anti-short time period
has elapsed. On power-up, there will be delays for
control board initialization and random-start timing.
See “Sequence of Operation” on page 13.
Unit-Mounted Thermostat
1.
Use system switch to place PTAC/PTHP in either
COOL
,
HEAT
, or
OFF
position. See Figure 11. Test operation
in all positions.
2.
Use fan speed switch to place fan in either
LOW
or
HIGH
speed. Test operation in both positions for
heating and cooling.
3.
Test operation of Fan Cycle switch (toggle switch on
side of control box), with switch set at
ON
(continuous
fan operation) or
AUTO
(cycling with thermostat)
for both heating and cooling. Set switch in desired
position.
4.
Rotate thermostat knob to left to increase setpoint
temperature, or right to decrease. Turning unit-mount-
ed thermostat knob to far left will produce warmest
room temperature, while turning it way to right will
produce coolest. Setting can be adjusted for personal
comfort.
INSPECTION & START-UP
TEST JUMPER
HEAT
PUMP
JUMPER
Figure 10
Circuit Board
Figure 11
Mount Control
THERMOSTAT KNOB
The Right Fit for Comfort
18
P/N 240010330, Rev. A [10/15/2013]