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ENGLISH, FRANCAIS (et Canada) •Installation •Operation
Effective 1/08
LITERATURE NUMBER
MPD 31493
hydro flame
TM
Model 2H2C
Two Stage Furnace
Digital Thermostat
FOR TWO STAGE FURNACE
9
1
12VDC
Ground
3
+12VDC
2
NOT
USED
Screw Mounting Holes
4
RELAY
COM
*
5
A/C
COM-
PRESSOR
6
A/C
HI
FAN
7
A/C
LOW
FAN
8
TH FROM
FURNACE
(CLIM) COOL FAN (VENTIL.)
(OFF) OFF
HEAT (CHAUFFAGE)
M
Display
System Switch
Temperature
Set
Mode
Set
Specifications
Operating Voltage ...................... 9VDC to 18VDC
Power Consumption
................................ 100mA
Operating Temperature
.................. -40F to +185F
Room Temperature Range
.............. +55F to +90F
Room Temperature Display Range
.. +35F to +99F
Thermostat Accuracy
................................ +/- 1F
System Slide Switch
SCROLL ORDER OF
LEFT RIGHT DISPLAYED MODES
OPERATION
COOL OFF HEAT FAN
Scroll Order of Displayed Modes
Furnace Operation
•
AU Furnace automatically switches between high and low BTU valve and high
and low speed fan when cycling to satisfy set point.
•
HI Furnace high BTU valve and high speed furnace fan cycle to satisfy set point.
•
LO Furnace low BTU valve and low speed furnace fan cycle to satisfy set point.
•
HF Furnace fan runs at high speed to circulate air. Air conditioner fan does not run.
•
LF Furnace fan runs at low speed to circulate air. Air conditioner fan does not run.
COOL OFF HEAT FAN
Scroll Order of Displayed Modes
Air Conditioner Operation
•
AU
Air conditioner automatically switches compressor and high and low speed fan when
cycling to satisfy set point.
•
HI Air conditioner compressor and high speed fan operate to satisfy set point.
•
LO Air conditioner compressor and low speed fan operate to satisfy set point.
•
HF Air conditioner fan runs at high speed to circulate air. Furnace fan does not run.
•
LF Air conditioner fan runs at low speed to circulate air. Furnace fan does not run.
COOL OFF HEAT FAN
Scroll Order of Displayed Modes
Fan Operation
•
HI Air conditioner fan and furnace fan run at high speed to circulate air.
•
LO Air conditioner fan and furnace fan run at low speed to circulate air.
COOL OFF HEAT FAN
Scroll Order of Displayed Modes
Off
•
OF No operation occurs.
THERMOSTAT INSTALLATION
Thermostat is very sensitive. HANDLE WITH CARE AT ALL TIMES.
Locate thermostat 48˝ to 54˝ above floor on an INTERIOR wall.
Pick a dry area where air circulation is good. EXTERIOR wall
location must have a 3/4˝ spacer between thermostat and
exterior wall.
1. Be sure all electrical power has been disconnected from
the air conditioner, furnace and the power supply.
2. Do not install the thermostat where there are unusual
heating conditions: such as direct sunlight, heat produc-
ing appliances (television, radio, wall lamp, etc.)
or a furnace or air conditioner supply register.
3.
ATTACHING THE WALL THERMOSTAT. Separate the thermostat
body from the sub-base by gently squeezing the top and
bottom. Pull wires through access hole in base plate.
Attach thermostat sub-base to the wall at the desired
mounting location. Mount the sub-base to the wall before
connecting the wires.
THIS THERMOSTAT HAS BEEN DESIGNED TO OPERATE STANDARD AIR CONDITIONING UNITS IN CONJUNCTION WITH AN EXCALIBUR 2-STAGE FURNACE.
*
Note: Move jumper to
positions 3 and 4 for RVP
Unit. Discard jumper for
Dometic
®
.