ENGLISH, FRANCAIS (et Canada) •Installation •Operation

Effective 9/21/04

LITERATURE NUMBER

MPD 31492

hydro flame

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.

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

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

•

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

LOW FAN

COMPRESSOR

FURNACE

GH GL B

HI FAN

LOW FAN

COMPRESSOR

12 VDC

SOURCE

CONNECT

4 TO 3

WITH JUMPER

12VDC

Ground

+12VDC

NOT

USED

Screw Mounting Holes

RELAY

COM

A/C

COM-

PRESSOR

A/C

FAN

A/C

LOW

FAN

TH FROM

FURNACE

Note: Move jumper to

positions 3 and 4 for RVP

Unit. Discard jumper for

Dometic

Atwood Hydro Flame 1H2C - User Manual

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