Emerson White-Rodgers 50E70-820 Installation Instructions

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
The 50E70-820 is an Integrated Furnace Control for aftermarket
service direct replacements, including the Trane Kit 17852 on
Trane Commercial Systems packaged units.
ELECTRICAL RATINGS:
Input Voltage: 18 to 30 VAC, 60 Hz
Relay Contract Ratings:
Gas Valve Relay: 1.5 A 0.6 PF @ 30 VAC
Ignitor Relay: 5.0 A @ 132 VAC
Flame Current Requirements:
Min current to insure flame detection: 1.0 µA DC*
Nominal current: 2 to 8 µA DC*
*Measured with a DC microammeter in series with the
flame probe lead
OPERATING TEMPERATURE RANGE:
-40° to 158°F (-40 to 70°C)
HUMIDITY RANGE:
To 95% relative humidity (non-condensing)
AGENCY APPROVALS:
CSA USA / Canada
GASES APPROVED: Natural, Manufactured, Mixed, Liquid
Petroleum, and LP Gas Air Mixtures
white-rodgers.com
emerson.com
50E70-820
Integrated Furnace Control
INSTALLATION INSTRUCTIONS
Parts included:
• 50E70-820 Integrated Furnace Control
• 24 VAC Wiring Harness (0155-0263)
• 59-4819 (3AD-2) Adapter Board
• 3 – Plastic tie wraps
• Installation Instructions
• Fault code label
CAUTION
!
Risk of Electric Shock.
Disconnect electric power
to system until installation
is complete. Do not use on
circuit exceeding specified
voltage. Higher voltage will
damage control and could
cause shock or fire hazard.
This control is not intended
for use in locations where
it may come in contact with
water.
May cause flame rollout.
Shut off main gas to heat-
ing system until installa-
tion is complete.
DESCRIPTION
SPECIFICATIONS
PART NO. 37-7663001
1707