Robertshaw 9851i - Quick Start Installation Manual

Models 9851i, 9865i and 9870i
Quick Start Installation Manual
111-340
Installation DOs and DON’Ts
DO
• Shut off all power to system before installing.
• Read entire manual before installing.
• Make sure that all wiring conforms to
national and local codes.
DO NOT
•
Install on voltages greater than 30 VAC.
• Short jumper across terminals on the gas
valve or at the system control.
• Connect ground to any terminal in
this unit.
• Install on outside walls or in direct sunlight.
Select location for installation.
1
Mark mounting hole locations on wall.
3
Drill
3
/
16
” holes at marked locations on
wall. Insert plastic anchors into holes.
4
Align unit base over plastic anchors
embedded in wall and secure with the
screws provided.
5
Connect wiring between unit and
furnace. For Model 9851i (1H/1C
furnace applications):
6
1- 1/2"
1"
Cut
out
opening
1/4"
a
b
Mark mounting hole
locations on wall using
unit base as template.
Drill 3/16" holes
a
b
Press anchors into holes until flush.
Y1
R
C
E/W1
H O B G
Furnace
Terminals*
Wiring
Thermostat
C - Common 24 VAC
R - System transformer
Y1 - 1st stage cooling
W1- 1st stage heating
W2- not used
Y2 - not used
L - not used
O - Cool active reversing valve
B - Heat active reversing valve
G - Fan relay
D - Dehumidification relay
H - Humidification relay
TERMINAL DESIGNATIONS
W2
D
Y2
C
C
H
R
Y1
W1
L
G
L
B
O
* Please refer to furnace
installation manual for
proper terminations
Note: To avoid electrical problems, use the system transformer for both
the thermostat and humidifier.
98
5
1
i
Humidifier
D
Remove 1/4” of insulation
from end of each wire
Open the case with a screwdriver. Place
in slot and gently pry forward at all four
locations.
2
1
2
3
4
DELUXE
PROGRAMMABLE
THERMOSTATS