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WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS RD., ST. LOUIS, MO. 63123
(314) 577-1300, FAX (314) 577-1517
9999 HWY. 48, MARKHAM, ONT. L3P 3J3
(905) 475-4653, FAX (905) 475-4625
Printed in U.S.A.
PART NO. 37-1640B
Replaces 37-1640, 37-9163, 37-9264
9620
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
Operator: Save these instructions for future use!
The Type 1050 Indoor-Outdoor Control is designed for use on
conventional hot water heating systems where it is desired to
vary boiler temperature according to outdoor weather condi-
tions. These controls are not recommended for radiant panel
installations because of the lower boiler temperatures required.
Type 1050 has open-on-rise (SPST) switch action.
This indoor-outdoor control increases or decreases frequency
of burner operation to maintain a proper balance between boiler
temperature and outdoor temperature. This control should
always be used with a separate high limit control.
For increased flexibility, this control has two simple adjustments
that enable it to be set to meet the needs of almost any
installation. The square dial is used to adjust the reset ratio from
1-1/2 to 1, up to 1 to 1-1/2. The round dial permits additional
adjustment, if necessary, to raise or lower boiler water tempera-
ture at all outdoor temperatures.
INSTALLATION INSTRUCTIONS
TYPE 1050
INDOOR - OUTDOOR
HOT WATER TEMPERATURE CONTROL
With Adjustable Reset Ratio
THIS CONTROL MUST BE INSTALLED BY A QUALIFIED
INSTALLER.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical
codes and ordinances.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
This control has been accurately calibrated at the factory.
Any attempt to calibrate this control will void the White-
Rodgers warranty.
PRECAUTIONS
WARNING
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
Do not use on circuits exceeding specified volt-
ages. Higher voltages will damage control and
could cause shock or fire hazard.
CAUTION
SPECIFICATIONS
ELECTRICAL DATA
Switch Action: Open on Rise
Switch Rating: S.P.S.T.
14F.L.A., 84L.R.A., 120V.A.C.
7F.L.A., 42L.R.A., 240V.A.C.
5.6A.,@ 25V, 120V.A.C.
2.8A.,@ 240V.A.C.
THERMAL DATA
Range:Outdoor Temp.- -20° to 70°F (-24° to 21°C)
Boiler Temp.- 60° to 120°F (16° to 49°C) min. setting
-100° to 250°F (38° to 121°C) max. setting
Differential: - 10°F Fixed (5.5°C)
Capillary Length: Outside - 30 Ft. (9 m)
Inside - 15 Ft. (4.5 m)
Bulb Size: Outside - 3/8" x 3-5/8"
Inside - 7/16" x 3" for 1/2" NPT well
WHITE-RODGERS