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ENGLISH, FRANCAIS (et Canada) •Installation •Operation
Effective 9/21/04
LITERATURE NUMBER
MPD 31492
hydro flame
TM
Model 1H2C
Digital Thermostat
FOR STANDARD FURNACES
& A/C SYSTEMS
SPECIFICATIONS
Operating Voltage ........................ 9VDC to 18VDC
Current Consumption at 12VDC ................ 100mA
Operating Temp. ............................ -40F to +185F
Room Temp. Range ........................ +55F to +90F
Room Temp. Display Range .............. +35F to +99F
Thermostat Accuracy ................................ +/- 1F
Switching Capability A/C ..........................up to 24 VAC
(max. 2 AMPs)
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 producing
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,
connecting wiring per
requirements. Attach thermostat
sub-base to the wall at desired
mounting location.
THIS THERMOSTAT HAS BEEN DESIGNED TO OPERATE STANDARD AIR CONDITIONING UNITS IN CONJUNCTION WITH A RV FURNACE
.
COOL FAN
OFF
HEAT
M
Display
System Switch
Temperature Set
Mode Set
7.5 VDC ANALOG A/C SYSTEMS (DOMETIC
®
)
THERMOSTAT WIRE FROM FURNACE WIRE FROM A/C
TERMINAL # (L-R)
FUNCTION FUNCTION
1-12vdc ground
4 7.5 vdc
3 +12vdc
5 Compressor
6 High Fan
7 Low Fan
8 Furnace Control
12 VDC ANALOG A/C SYSTEMS (RVP
®
)
THERMOSTAT WIRE FROM FURNACE WIRE FROM A/C
TERMINAL # (L-R)
FUNCTION FUNCTION
1 -12vdc ground
2 not used not used
3 & 4 +12vdc
5 Compressor
6 High Fan
7 Low Fan
8 Furnace Control
SLIDE SWITCH
SCROLL ORDER OF
LEFT RIGHT DISPLAYED MODES
OPERATION
COOL OFF HEAT FAN
Furnace Operation
• HI Furnace cycles to satisfy set point.
COOL OFF HEAT FAN
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 cycle to satisfy
set point.
•
LO Air conditioner compressor and low speed fan cycle to satisfy
set point.
COOL OFF HEAT FAN
Fan Operation
•
HI Air conditioner fan runs at high speed to circulate air.
•
LO Air conditioner fan runs at low speed to circulate air.
COOL OFF HEAT FAN
Off
•
OF No operation occurs.
WIRING REQUIREMENTS FOR ATWOOD THERMOSTAT
FURNACE
12 VDC
SOURCE
+
7.5V
HI FAN
6
LOW FAN
7
COMPRESSOR
5
4
8
3
1
FURNACE
+
Y
GH GL B
HI FAN
6
LOW FAN
7
COMPRESSOR
5
12 VDC
SOURCE
8
3
1
CONNECT
4 TO 3
WITH JUMPER
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
*
Note: Move jumper to
positions 3 and 4 for RVP
Unit. Discard jumper for
Dometic
®
.
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