Tekmar 009 Installation & Operation Manual

Installation & Operation Manual
Transformer 009
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.
Basic Installation
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.
Wiring the Transformer
High Voltage Side:
• • 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.
Sizing the Transformer Load
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.
Zone 1
Thermostat
Load
Zone Valve
Load
Other Load
Total Zone Load
2 3
+ + +
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. Note: The
Figure 1
fuse is rated at 250 V (ac) 2.0 A slow-blow type.
• • Connect the black lead provided with the Transformer
009 to the C spade connector on the secondary side
of the transformer.
4 5
+ +
1 of 2
Accessories
6
Transformer
must exceed:
Control
Load (VA)
+
© 2013
009_D
02/13
Replaces: 04/09
VA
009_D - 02/13