tekmar 009K 24 V (ac) Transformer Kit - Manual

24 V (ac) Transformer 009
009_D
05/14
Accessories Replaces: 02/13
Installation & Operation Manual
1 of 2 © 2014 009_D - 05/14
Mount the Electrical Box
• • Mount the electrical box securely in the location where the transformer is to be installed.
•
• Mount the transformer to the electrical box. Figure 1 shows how the transformer could be
mounted.
Basic Installation
The tekmar Transformer 009 is a 40 VA, 24 V (ac) transformer for use with products that require an external transformer.
The Transformer Kit 009K includes a 4" x 4" electrical J-Box.
Figure 1
When sizing a transformer it is important to know the load that it will be operating. Transformers are sized based on the VA
(Volt X Amps) power that they can provide. Use the sizing chart below to calculate the required VA. The tekmar Transformer
009 can supply a total of 40 VA. If the load exceeds 40 VA, a larger transformer is required.
Sizing the Transformer Load
Zone 1 2 3 4 5 6
Thermostat
Load
Zone Valve
Load
Other Load
Control
Load (VA)
Total Zone Load
+ + + + + +
Transformer
must exceed:
VA
• • The high voltage side of the transformer can be determined by locating the two permanently connected, black and
black or black and white wires, which are factory-installed.
• • Connect 120 V (ac) hot (L) to the black (L) wire on the transformer.
•
• Connect 120 V (ac) neutral (N) to the white or opposite black (N) wire on the transformer.
Low Voltage Side:
•
• The low voltage terminals have male spade connectors and are labelled R and C.
•
• Connect the red lead (with the in-line fuse) provided with the Transformer 009 to the R spade connector on the secondary
side of the transformer. The fuse is rated at 250 V (ac) 2.0 A slow-blow type.
• Connect the black lead provided with the 009 to the C spade connector on the secondary side of the transformer.
To avoid serious personal injury and damage to the equipment:
It is your responsibility to ensure that this product is safely installed according to all applicable codes and
standards. tekmar is not responsible for damages resulting from improper installation and/or maintenance.
• • Read Manual and all product labels BEFORE using the equipment. Do not use unless you know the safe
and proper operation of this equipment.
• • It is the installers responsibility to ensure that this product is safely installed according to all applicable codes
and standards.
• • Ensure power to the circuit is off before wiring.
Wiring the Transformer
High Voltage Side: