Robertshaw 9420 User manual

9420 DIGITAL
THERMOSTAT
Features and Benefits
Larger Back Lit Display
Makes viewing and setting the temperature
easy and accurate.
Winter and Summer Permanent Setpoint Memory
Allows you to save both heating and cooling
temperature settings.
Automatic Compressor Short Cycle Protection
A system safeguard. Reduces wear and
tear of HVAC equipment.
Worry-Free Memory Storage
Even during power outages, the thermostat maintains
setpoint and programmed parameters.
Adjustable 1st and 2nd Stage Temperature Differential
Maintains optimal customer comfort.
O & B Terminals
Greater system flexibility, zoning compatible.
Zone System Compatible
In zoning applications where temperature is
precisely controlled, the thermostat acts as a sensor
within the system.
Quick Wire Terminal Block
Fast and easy installation. Uses sturdy wire clamps –
no wrap-around of screws.
Toll-Free Assistance
Toll-Free Technical Service number printed right on
the thermostat provides immediate assistance.
2 Heat / 2 Cool
Incredible Digital
When it comes to non-programmable temperature control, we
listened to the experts–YOU! Our new 9420 is the next evolution
in digital thermostats. The LCD display is clearly one of the
largest in the industry, up to 80% larger than competitive
models. Plus, the display is back lit, making it even easier to
read in a dark room.
This model is loaded with enhanced features. The 9420 comes
with permanent winter and summer setpoint memory, allowing
you to save both heating and cooling temperature settings. This
eliminates temperature adjustments when switching systems for
seasonal requirements. And our fully adjustable differential
control provides increased comfort for your customers. The 9420
is compatible with all standard 24 Volt AC multi-stage heat
pump systems.
When you select a Robertshaw thermostat, you’ve made the
choice of an industry partner that’s been making quality
products for 100 years. Come home to affordable comfort.
Come home to RobertshawSM.
Technical service available:
1-800-445-8299
M-F 7:00 a.m. - 5:30 p.m. CST
W
A
R
R
A
N
T
Y
2
T
W
O
Y
E
A
R
H
HEAT PUMP
®
new series!
24 VAC POWERED

2 Heat / 2 CoolTerminal Designations
THE ROBERTSHAW 9420 REPLACES:
H
Shipping Information
Indiv. Ctn. Dim.: 6.75" x 4.375" x 1.625"
Master Ctn. Qty.: 6
Master Ctn. Dim.: 9.25" x 5.625" x 7.625"
Master Ctn. Cu. Ft.: .23
Master Ctn. Wt.: 4.0 lbs.
Max. Pallet Qty.: 1170
Max. Pallet Dim.: 40" x 48" x 48"
Max. Pallet Cu. Ft.: 53.33
Max. Pallet Wt.: 835 lbs.
Other Two Stage Heat,
Two Stage Cool Thermostats
9620: Programmable, 2 Heat / 2 Cool, HP
9720i: Deluxe Programmable, 2 Heat / 2 Cool, HP
C
24 VAC
Common
R
24 VAC
Transformer
L
System
Monitor
LED
Y2
Cooling
Relay
(Stage 2)
Y1
Compressor
Relay
(Stage 1)
E
Emergency
Heat
Relay
W2
Auxiliary
Heat Relay
(Stage 2)
O
Cool Active
Reversing
Valve
B
Heat Active
Reversing
Valve
G
Fan
Relay
Specifications
Electrical rating: 24 Volt AC (18-30 VAC)
1 amp maximum load per terminal
3 amp total maximum load
(all terminals combined)
Temperature control range: 45˚- 90˚F (7˚- 32˚C)
Accuracy: +/-1˚F (+/-.5˚C)
Power: 24 VAC
System configurations: Multi-stage heat pump
systems - two stage heat, two stage cool
Terminations: C, L, R, Y2, Y1, E, G, W2, O, B
HEAT PUMP
®
Distributed by:
9420 DIGITAL
THERMOSTAT
new series!
Robertshaw 9520
White-Rodgers Company* 1F89-211
Honeywell, Inc.* T8411R
* Verify specific application requirements before substitution.
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