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FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
The kit contains:
• 50V51-751 Integrated Furnace Control with Mounting Tray
• 3 Harness Assemblies
• Control Label
• 8 Wire Nuts
• Installation Instructions
The 21V51D-751 is a Two-Stage HSI Integrated Furnace
Control kit for many Carrier and ICP equipment brands with
PSC, Variable Speed, and ECMx Blowers configured via
dipswitch selection.
ELECTRICAL RATINGS:
Input Voltage:
18 to 30 VAC, 60 Hz
Current: 0.8 amp @ 25 VAC
Relay Contact Ratings:
Gas Valve 1st Stage: 1.5 A 0.6 PF @ 30 VAC
Gas Valve 2nd Stage: 0.5 A @ 30 VAC
Ignitor Relay: 2.0 A @ 120 VAC
Inducer Relay: 2.2 A FLA @ 120 VAC
Inducer Relay: 3.5 A LRA @ 120 VAC
PSC Circulator Relay: 14.5 A FLA @ 120 VAC
PSC Circulator Relay: 25 A LRA @ 120 VAC
ECMx Circulator Relay: 4.0 mA RMS @ 18 VAC
ECMx Circulator Relay: 12.0 mA RMS @ 30 VAC
Humidifier Load: 1.0 A @ 120 VAC
Electronic Air Cleaner: 1.0 A @ 120 VAC
Flame Current Requirements:
Min current to insure flame detection: 0.25 μA DC*
Max current for non-detection: 0.1 μA DC
Max allowable leakage resistance: 150 M ohms
* Measuring with a DC voltmeter (1VDC = 1 μA)
OPERATING TEMPERATURE RANGE:
-40° to 175°F (-40° to 80°C)
HUMIDITY RANGE:
5 to 95% relative humidity (non-condensing)
Two-Stage Integrated Furnace Control for PSC,
Variable Speed, and ECMx Blower Motors
INSTALLATION INSTRUCTIONS
TWINNING: 21V51D-751 CANNOT be twinned with
any Carrier, ICP, or ICM brand controls. Both control
boards must be from the same manufacturer for proper
functionality.
AGENCY APPROVALS:
GASES APPROVED:
white-rodgers.com
emerson.com
21V51D-751
PARTS INCLUDED
SPECIFICATIONS
CSA USA / Canada
Natural, Manufactured, Mixed,
Liquid Petroleum, and LP Gas Air Mixtures.
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 heating
system until installation is
complete.
DESCRIPTION
PART NO. 37-7625001
1711
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Table of Contents
Related Manuals for White Rodgers 21V51D-751
Summary of Contents for White Rodgers 21V51D-751
-
Page 1: Specifications
• 8 Wire Nuts • Installation Instructions DESCRIPTION The 21V51D-751 is a Two-Stage HSI Integrated Furnace TWINNING: 21V51D-751 CANNOT be twinned with any Carrier, ICP, or ICM brand controls. Both control Control kit for many Carrier and ICP equipment brands with... -
Page 2: Installation
INSTALLATION HARNESS DESCRIPTIONS MOUNTING AND WIRING • “A” Used to make the thermostat I/O connections, using NOTE: All wiring should be installed according to local and the included wire nuts. Plugged into connector P5 on the national electrical codes and ordinances. new control board. -
Page 3: Wiring Diagram
WIRING DIAGRAM ACRDJ – Air Conditioning Relay Disable LHT – Low Heat Only (Adaptive Heating) Jumper (Adaptive Cooling) The control can operate a two-speed furnace with a single- stage thermostat using an adaptive algorithm which selects The control can operate a two-speed A/C unit with a single- between low-heating or high-heating operation. -
Page 4: Dip Switch Configuration
DIPSWITCH CONFIGURATION Blower Type Configuration Low Heat Only Mode Heat - Blower Off Delay PSC / ECMx Ht Off Ht Off 120s* Enable Disable* ON: Enable adaptive control Continuous Fan Speed of heat stages (single stage thermostat) OFF*: Disable internal Cont Fan control of heat stages Ht Off... -
Page 5: Heat Mode
OPERATION HEAT MODE Heating until Thermostat Output is Satisfied Blower Off Delay 15 s 17-19 s <5 s 45 s 15 s 90, *120, 150, 180 Thermostat - W2 Thermostat - W1 High Speed Inducer (IND HI) Low Speed Inducer (IND LO) Pressure Switch (HPS) Pressure Switch (LPS) Ignitor (HSI) -
Page 6: Dehumidification Mode
OPERATION DEHUMIDIFICATION MODE Output Cooling/Dehum until Thermostat is Satisfied 3 sec 10 min 10 min 10 min 5 sec Thermostat - DEHUM Thermostat - Y2 Thermostat - Y1 Outdoor Compressor Outdoor Fan Blower (Cool Speed) Blower (High Heat Speed) Blower (Low Heat Speed) Green LED –... -
Page 7: Heat Pump Mode
Sequence is as follows: • LED will flash in red the previous error code 4 times The 21V51D-751 furnace control is equipped with a self-test • Afterward, the LED will slowly flash alternate colors (red, routine used during the control’s installation. Self-test checks... -
Page 8: Troubleshooting
LED will be on to indicate ignore any new call for heat, cool or fan. return to normal status. TECHNICAL SUPPORT: 1-888-725-9797 Emerson and White-Rodgers are trademarks of Emerson Electric Co. white-rodgers.com ©2017 Emerson Electric Co. All emerson.com... -
Page 9: Directives D'installation
• Directives d’installation DESCRIPTION La commande 21V51D-751 est un ensemble de commande JUMELAGE : La commande 21V51D-751 NE PEUT PAS être jumelée aux commandes de marque Carrier, ICP ou ICM. intégrée HSI de fournaise bi-étage qui convient à la plupart des appareils Carrier et ICP avec souffleurs PSC, à... - Page 10 INSTALLATION DESCRIPTION DES FAISCEAUX MONTAGE ET CÂBLAGE REMARQUE : Tout le câblage doit être installé conformément • « A » Utilisé pour les branchements E/S du thermostat à aux codes et ordonnances locaux et nationaux de l’électricité. l’aide des connecteurs inclus. Branché dans le connecteur P5 du nouveau panneau de commande.
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Page 11: Schéma De Câblage
Branchement Bouton Faisceau de commande White-Rodgers SELECT JUMELÉ câbles de 21V51D-751 seulement thermostat « A » ON* : Active le contrôle adaptatif pendant la climatisation (thermostat mono-étage) COMMUTATEUR DIP DHUM CHAUFFAGE LENT OFF : Neutralise le contrôle adaptatif pendant la VENT. -
Page 12: Configuration Du Commutateur Dip
CONFIGURATION DU COMMUTATEUR DIP Configuration du type de souffleur Mode chauffage lent seulement Chauffage – Délai d’arrêt du souffleur PSC / ECMx Délai Délai 90 s 120 s* arrêt arrêt Activer Neutraliser* chauff. chauff. MARCHE ARRÊT MARCHE ARRÊT MARCHE ARRÊT MARCHE ARRÊT MARCHE : Active le contrôle... -
Page 13: Mode Chauffage
FONCTIONNEMENT MODE CHAUFFAGE Chauffage jusqu’au Délai d’arrêt du Sortie réglage du thermostat souffleur 15 s 17-19 s <5 s 45 s 15 s 90, *120, 150, 180 Thermostat – W2 Thermostat – W1 Inducteur grande vitesse (IND HI) Inducteur basse vitesse (IND LO) Pressostat (HPS) Pressostat (LPS) -
Page 14: Mode Déshumidification
FONCTIONNEMENT MODE DÉSHUMIDIFICATION Sortie Climatisation/Déshumidification jusqu’au réglage du thermostat 10 min 10 min 10 min Programmation du thermostat Thermostat – Y2 Thermostat – Y1 Compresseur extérieur Ventilateur extérieur Souffleur (vitesse de climatisation) Souffleur (vitesse de chauffage rapide) Souffleur (vitesse de chauffage lent) DEL verte –... - Page 15 • Cliquer deux fois lentement sur le bouton SELECT en moins de 3 secondes. La commande de fournaise 21V51D-751 est équipée d’une fonction auto-test que l’on utilise pendant l’installation de la commande. La séquence est la suivante : L’auto-test vérifie la fonctionnalité de la commande, de l’allumeur, •...
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Page 16: Dépannage
DEL s’allume pour ou de ventilation. indiquer le retour au statut normal. SOUTIEN TECHNIQUE : 1-888-725-9797 Emerson et White-Rodgers sont des marques de commerce d’Emerson Electric Co. white-rodgers.com © 2017 Emerson Electric Co. Tous emerson.com...
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