EK-Pak Owner and Installation Manual
EK-Pak Owner & Installation Manual First Edition December 2002
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Example, Multiple EK-Pak and Injection Loop Piping Diagram:
Notes:
Pipe sizing is based on using EK-Pak's with a maximum 140F return temperature.
Each EK-Pak has an expansion tank and relief valve.
Additional expansion tank capacity may be needed for large systems.
Be sure to pipe each EK-Pak for make-up water.
For domestic hot water production, request the multiple heating module drawing for heat and hot water
capability.
Initial Tekmar Settings:
Set temperature slope to 60/140F and 0/180F, (Reset ratio is .4)
Set differential to 20F
Warm Weather Shutdown 65F
Adjust above settings to suit installation requirements.
20F differential turns on second EK-Pak.
Injection Loop Return Header
Return Header
Supply Header
Hot Water Injection Loop
Temp Sensor
(see "Injection Loop" sizing)
Number of
Boilers
2
Gross Output (BTU)
Nat Gas
140°F
Primary Loop
Size GPM
1"
Injection Loop
Size GPM
3/4"
10
8
For loops greater than 100', increase to next pipe size.
Primary Loop Circulator
(size to system)
Primary Loop
(see "Primary Loop" sizing)
Injection Loop Supply Header
Taco 0010
EK
K
pa
pa
EK
K
130°F
Balancing Valves to be set for at least
140°F maximum return temperature.
Maximum
Return Temp
Propane
120°F
100°F
160,000
200,000
240,000
290,000
160,000
200,000
240,000
290,000