Robertshaw 8425-1 User Manual
8425-1
DIGITAL
THERMOSTAT
Features and Benefits
Stat-Snap™
The custom thermostat cover that applies in a snap
(Custom Clear included with unit).
Larger Back Lit Display
Makes viewing and setting the temperature
easy and accurate.
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 set
point and programmed parameters.
Adjustable 1
st
and 2ndStage 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 Universal
Designer Digital
Finally, a thermostat that combines Function and Fashion.
Functionally, the 8425-1 Robertshaw thermostat is a Universal
Multi-stage product that is compatible with all 24 VAC multistage heating and cooling equipment including heat pumps.
The 8425-1 comes with all the great features you’d expect from
Robertshaw. It has a large backlit display – 80% larger than
other competitive models. The 8425-1 operates with a 24V
common wire for applications where line power is preferred.
Fashionably, the 8425-1 Robertshaw thermostats can blend
with any decor using exclusive Stat-Snaps™ (Custom Clear
included with unit ). Four styles of faceplates are available:
Gloss Black, Antique Bronze, Brushed Stainless, and Custom
Clear. The Custom Clear can be painted or wall papered to
custom match any decor.
You get all of this in a cool new look. We’ve delivered the
desired “touch screen” appearance - a flush, smooth, easy to
clean face – without the high price of a touch screen.
When you select a Robertshaw thermostat, you’ve made the
choice of an industry partner that’s been making quality
products for over 100 years. Come home to affordable comfort.
Come home to Robertshaw.
SM
Technical service available:
1-800-445-8299
M-F 7:00 a.m. - 5:30 p.m. CST
W
A
R
R
A
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2
T
W
O
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R
new series!
24 VAC POWERED
G
GASEELECTRICOOIL
H
HEAT PUMP
2 Heat / 2 Cool UniversalTerminal Designations
THE ROBERTSHAW 8425-1 REPLACES:
Shipping Information
Indiv. Ctn. Dim.: 5.1" x 5.1" x 1.8"
Master Ctn. Qty.: 6
Master Ctn. Dim.: 10.9" x 5.6" x 6.1"
Master Ctn. Cu. Ft.: .22
Master Ctn. Wt.: 3.1 lbs.
Max. Pallet Qty.: 1176
Max. Pallet Dim.: 40" x 48" x 48"
Max. Pallet Cu. Ft.: 53.8
Max. Pallet Wt.: 658 lbs.
C
24 VAC
Common
R
24 VAC
Transformer
L
System
Monitor
Y2
Cooling
Relay
(Stage 2)
Y1
Compressor
Relay
(Stage 1)
W1
Heating
Relay
Stage 1
W2/E
Auxillary /
Emergency
Heat Relay
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, W1, G, W2/E, O, B
Distributed by:
8425-1
DIGITAL
THERMOSTAT
new series!
Robertshaw 9515, 9520
White-Rodgers Company* 1F79-111, 1F83-261
1F83-277, 1F89-211
Honeywell, Inc.* T8411R
ICM* SC2200, SC2201
SC2211, SC2300
Braeburn* 3100, 3200
* Verify specific application requirements before substitution.
Controls Americas
515 South Promenade Avenue
Corona California 92879-1736 USA
Telephone +1 800 951 5526 Facsimile +1 630 260 7299
iccacustomerservice@invensys.com
www.icca.invensys.com
©2005 Invensys Controls Americas 6/05 - #150-1947
E
G
GAS ELECTRIC
O
OIL
H
HEAT PUMP
Other Two Stage Heat, Two Stage Cool Thermostats
8625-1: Programmable, 2 Heat / 2 Cool Universal
9415: Digital Non-Programmable, 2 Heat / 2 Cool
9420: Digital Non-Programmable, 2 Heat / 2 Cool, Heat Pump
9555: Digital Non-Programmable, 2 Heat / 2 Cool
9560: Digital Non-Programmable, 2 Heat / 2 Cool
9715i: Deluxe Programmable, 2 Heat / 2 Cool
9720i: Deluxe Programmable, 2 Heat / 2 Cool, Heat Pump
9815i: Deluxe Programmable, 2 Heat / 2 Cool
9820i: Deluxe Programmable, 2 Heat / 2 Cool
9915i: Deluxe Programmable, 2 Heat / 2 Cool
9920i: Deluxe Programmable, 2 Heat / 2 Cool, Heat Pump
9865i: Deluxe Programmable, 2 Heat / 2 Cool
9870i: Deluxe Programmable, 2 Heat / 2 Cool, Heat Pump
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