AGATWNDTE01C Twinning Kit for Non-Condensing and Condensing Gas Furnaces

Description

AGATWNDTE01C Twinning Kit for Non-Condensing and Condensing Gas Furnaces – E:Mail: sales@walkair.us to confirm availability or for volume discounts

AGATWNDTE01C – Twinning Kit for Non-Condensing and Condensing Gas Furnaces

This twinning kit permits connection of two multi-speed constant torque (MCT) ECM, variable-speed constant torque (VCT), fixed-speed constant torque (FCT) ECM, or PSC blower motor equipped furnaces controlled by a mechanical thermostat. An electronic User Interface cannot be used and is not approved for twinned furnaces. This furnace twinning kit permits two of the following furnaces of the same size to operate as a single unit on the same duct work. The furnaces must be installed with common supply and return plenums. For upflow installations, the common return plenum or platform must use some or all of the bottom return opening as shown in the DUCT CONNECTIONS section. This kit ensures both furnace blowers operate simultaneously so air flows through the duct work rather than recirculating in a loop between the furnaces.

Twinned single-stage furnaces can operate as a single unit or as staged units. With staged single-stage furnaces, the left-hand furnace is used for first-stage heat, and both furnaces are used for second-stage heat. A field supplied two-stage thermostat is required for staged operation of single-stage furnaces. Staged heating operation of twinned furnaces is permitted only with this twinning kit.

NOTE: As a result of staged heating with single-stage furnaces, the air temperature distribution in the supply plenum may be uneven when only one furnace is heating.

Twinned two-stage furnaces can only operate as staged units. With the two-stage furnaces, low-heat in both furnaces is used for first-stage heat, and high-heat in both furnaces is used for second-stage heat. Two-stage furnaces can be configured to use a field supplied single-stage thermostat and the furnace control staging algorithm or they can use a field supplied two-stage thermostat to control the staging. Refer to the CONNECT ELECTRICAL COMPONENTS section for two-stage thermostat details.

Cooling units used with twinned furnaces must be single-stage A/C unit(s). Heat pumps cannot be twinned with gas furnaces. When installing twinned outdoor units with twinned gas furnaces, it is necessary to use a field-supplied 24-VAC pilot-duty relay and a field-supplied 24-VAC/115-VAC transformer as shown in the individual wiring diagrams to prevent overloading furnace 24-VAC/115-VAC transformer.