-
RTUD uses the CGAM fan control
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The core design is the based on RTAC chiller design
- RTUD maintains a minimum of 60 psid
-
The core design is the based on RTAC chiller design
Recommended Fan Control when paired with Trane Condenser
RTUD – Condenser Fan Configuration
- Select Fan Control
-
Ambient Option
- None
- Variable
- Two Speed
-
Select Fan Configuration
- Number of Fans
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Relay Configuration
- Sequence 1
- Two Speed (Not used on Trane Condenser)
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Sequence 2
- Used for Trane Condensers
- The character in the 4 digit descriptor define the number of fans that wired to each of the 4 condenser fan relays
-
Two possible 5 fan arrangements
- First sequence 1 H 1 3.
- There should be 1 fan wired to relay 1 (terminals J2-1,3 of module 1A25 – Circuit 1 Fan Quad LLID
-
Digit 2 in the sequence H, is only for use with the High speed of a 2 speed fan configuration
- If unit was not selected for low ambient options it is not to be used and nothing should be wired to the 2nd relay
- 3rd and 4th digits imply the number of fans that are to be wired to the 3rd and 4th relays
-
The second alternative wiring for a fixed speed 5 fan deck is the 1112 selection
- This scheme, the first 3 relays should all be wired to control one fan
- Last relay should control 2 fans
Original HUB Document: DOC-177748
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.