tekmar 370 House Control - Manual (Page 17)

Copyright © D 370 -06/99 17 of 20
Test Sequence     
Each step in the test sequence lasts 10 seconds. At the end of each step, the device continues to operate until it is turned off in a
later step.
During the test routine, the test sequence can be paused by pressing the Test button. The test sequence remains paused at that point
for up to 5 minutes. If the Test button is not pressed again while the test sequence is paused, the control exits the entire test routine.
Once the test sequence is paused, the Test button can be pressed again to skip to the next step. This can also be used to rapidly
skip through the test sequence. To reach the desired step, repeatedly press and release the Test button until the appropriate device
and indicator light turn on.
Step 1 - If the DIP switch is set to Mixing, the variable speed injection pump is ramped
up to 100% over 10 seconds.
Step 2 - The DHW Pmp / Vlv relay is turned on.
Step 3 - The Sys Pmp relay is turned on.
Step 4 - The Boiler relay is turned on.
Step 5 - The DHW Pmp / Vlv, Sys Pmp, Boiler and Variable Speed Injection Pump are
turned off.
Step 6 - If an RTU 054 or Indoor Sensor 076 is connected to the terminals Com Sen —
RTU 4 (8 and 10), the control turns on the zone 4 relay for 10 seconds.
Step 7 - Once the zone 4 relay is turned off, the control follows a similar procedure to
test the zone 3 relay. If an RTU 054 or Indoor Sensor 076 is not connected to
the terminals Com Sen — RTU 3 (8 and 9), the control skips this step.
Step 8 - Once the zone 3 relay is turned off, the control follows a similar procedure to
test the zone 2 relay. If an RTU 054 or Indoor Sensor 076 is not connected to
the terminals Com Sen — RTU 2 (5 and 7), the control skips this step.
Step 9 - Once the zone 2 relay is turned off, the control tests the zone 1 relay. If the DIP
switch is set to Zone 1 Heating, the control follows a similar procedure as above
to test the zone 1 relay. If the DIP switch is set to Zone 1 Cooling, the control
will also turn on the zone 1 relay for 10 seconds.
Step 10 - After the test sequence is complete, the Test light begins flashing and the
control enters a fast mode of operation. During this time, the control is much
more responsive to setting adjustments. If the dial on an RTU is turned up, the
on time of the zone relay increases immediately. After fifteen minutes, the
control reverts back to normal operating conditions and the zone on times are
based on the average indoor temperatures during the previous 15 minute cycle.
Manual Test
−−−−−−−−−−−−− −−−−−−−−−−−−− −−−−−−−−−−−−− −−−−−−−−−−−−− −−−−−−−−−−−−−
While the control is in the fast mode of operation and the Test light is flashing, check that
each RTU operates the proper zone valve or zone pump. Turn up the RTU dial to turn the
zone on, turn the dial down to turn the zone off. If an Indoor Sensor is used, a cold spray
to the sensor will turn the zone on.
Indicator Lights "On"     
Power • 120 V (ac) power is applied to the control and the control
is energized.
DHW Demand • The DHW tank is requesting heat.
WWSD • Heat is not required in the heating system.
Maximum Supply • The supply temperature is approaching the Max. System Supply dial setting and the 370 will not increase
the supply temperature any further.
Minimum Boiler • The supply temperature from the boiler is below the Min. Boiler Supply dial setting and the 370 is
reducing the load on the boiler in order to increase the boiler supply temperature as fast as possible.
DHW Pmp / Vlv • The relay contacts between DHW Pmp / Vlv— DHW Pmp / Vlv (20 and 21) are closed and the DHW
pump or DHW valve should be turned on or opened.
System
Pump
Boiler
DHW
Pump / Vlv
90
70
50
30
10
2 1
System
Pump
Boiler
DHW
Pump / Vlv
Zone 3
Zone 2
Zone 4
Zone 1 /
Cooling
1
2
3
4
Zone 3
Zone 2
Zone 4
Zone 1 /
Cooling
1
2
3
4
Zone 3
Zone 2
Zone 4
Zone 1 /
Cooling
1
2
3
4
4 3
6 5
8 7
10
Zone 3
Zone 2
Zone 4
Zone 1 /
Cooling
1
2
3
4
9
Test
System
Pump
Boiler
DHW
Pump / Vlv
System
Pump
Boiler
DHW
Pump / Vlv
Adjusting RTU settings provides an immediate
response for the first 15 minutes only.
70
M
Test
Testing