Home > WHITE RODGERS > White Rodgers 1F78-144 Non Programmable Thermostat Instruction Manual
White Rodgers 1F78-144 Non Programmable Thermostat Instruction Manual
CAUTION
Take care when securing and routing wires so they do not
short to adjacent terminals or rear of thermostat. Personal
injury and/or property damage may occur.
REMOVING OLD THERMOSTAT
CONTINUED FROM FIRST PAGE
!
3
ATTENTION! This product does not contain mercury. However, this
product may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do not
touch any spilled mercury. Wearing non-absorbent gloves, take up
the spilled mercury and place into a container which can be sealed.
If a cell becomes damaged, the unit should be discarded.
TERMINAL CROSS REFERENCE CHART
New Thermostat
Terminal Designation
Other Manufacturers’
Terminal Designation
*
*
Mercury must not be discarded in household trash. When the unit
this product is replacing is to be discarded, place in a suitable
product containing mercury.
RH
RC
G
4
R
G
W
Y
RH
M
V
F
R5
R
R
-
-
G
G
4
G
W
Y
W
W
Y
H
C
Y
Y6
MOUNTING AND WIRING
4
* These are four-wire, single-transformer systems.
Factory installed jumper wire between the RH
and RC terminals must remain in place.
WARNING
!
Do not use on circuits exceeding specified voltage. Higher
voltage will damage control and could cause shock or fire
hazard.
Attach Thermostat Base to Wall
1. Remove the packing material from the thermostat.Gently pull the
cover straight off the base. Forcing or prying on the thermostat
will cause damage to the unit. If necessary, move the electric
heat switch (see ELECTRIC HEAT SYSTEMS, above).
Do not short out terminals on gas valve or primary control
to test. Short or incorrect wiring will damage thermostat
and could cause personal injury and/or property damage.
Thermostat installation and all components of the system
shall conform to Class II circuits per the NEC code.
2. Connect wires beneath terminal screws on base using
appropriate wiring schematic (see figs. 2 through 7).
3. Place base over hole in wall and mark mounting hole locations
on wall using base as a template.
Electric Heat or Single-Stage
Heat Pump Systems
4. Move base out of the way. Drill mounting holes.
This thermostat is configured from the factory to operate a heat/
cool, fossil fuel (gas, oil, etc.), forced air system. It is configured
correctly for any system that DOES NOT require the thermostat
to energize the fan on a call for heat. If your system is an electric
or heat-pump system that REQUIRES the thermostat to turn on
the fan on a call for heat, locate the GAS/ELECTRIC switch (see
fig. 1) and switch it to the ELECTRIC position. This will allow the
thermostat to energize the fan immediately on a call for heat. If you
are unsure if the heating/cooling system requires the thermostat
to control the fan, contact a qualified heating and air conditioning
service person.
5. Fasten base loosely to wall, as shown in fig. 1, using two
mounting screws. Adjust until level, and then tighten screws.
(Leveling is for appearance only and will not affect thermostat
operation.) If you are using existing mounting holes, or if holes
drilled are too large and do not allow you to tighten base snugly,
use plastic screw anchors to secure subbase.
6. Push excess wire into wall and plug hole with a fire-resistant
material (such as fiberglass insulation) to prevent drafts from
affecting thermostat operation.
Battery Location
This thermostat requires 2 “AAA” alkaline batteries to operate. If
is displayed, the batteries are low and should be
Hydronic (Hot Water or Steam)
Heating Systems
This thermostat is set to operate properly with a forced-air heating
system. If you have a hydronic heating system (a system that heats
with hot water or steam), you must set the thermostat to operate
properly with your system.
replaced. For best results, replace batteries once a year with new
premium brand alkaline batteries such as Duracell® or Energizer®.
To replace the batteries, install the batteries along the top of the
base (see fig.1).The batteries must be installed with the positive (+)
ends to the right.
The factory default setting is forced air heat. Clipping jumper W905
on the circuit board will produce a longer heating cycle which is
normally for hot water or steam (hydronic) systems. Both settings
produce a very accurate temperature control and can be set to
your personal preference. As received, the thermostat cycles the
system just under 1°F. With W905 clipped, the system cycles at
approximately 1.5°F.
| General | Details |
|---|---|
| Name | White Rodgers 1F78-144 Non Programmable Thermostat Instruction Manual |
| Make | WHITE RODGERS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.42 MB |
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