tekmar 370 House Control - Manual

Copyright © D 370 -06/99 1 of 20
D 370
06/99
The House Control 370 is a microprocessor-based control that provides individual tempera-
ture control for either 4 zones of radiant floor or 4 zones of baseboard heating. The supply
water temperature to the zones is modulated based on both the outdoor temperature and
indoor temperature feedback from each of the zones. This indoor-outdoor reset strategy
reduces indoor temperature swings and increases system efficiency. Other energy saving
features include a heating system warm weather shut down (WWSD) and the ability to lower
indoor temperatures for a night setback period. The control has an Optimum Start / Stop
feature which automatically calculates when to bring each zone out of night setback in order
ensure they are returned to their normal operating temperature as the setback period ends.
The 370 also allows integration of an indirect fired DHW tank into the system. This helps
provide faster DHW tank pick-up times and greater energy savings.
Control Strategy ................... pg. 2 Testing the Control ...... pg. 16
Sequence of Operation ........ pg. 6 Error Messages ............ pg. 19
Installation ............................ pg. 10 Technical Data .............. pg. 20
Settings ................................. pg. 14 Limited Warranty .......... pg. 20
House Control 370
Four Zones, DHW, Boiler / Mixing
Power WWSD
Minimum
Boiler
DHW
Demand
System
Pump
Boiler Zone 3
70 °F (21 °C)
40
(4) 100
(38)
UnOccupied
LR 58223 N R T L / C
R
Occupied
Optimum Start / Stop
UnOccupied
Timer Active 24 hr. Timer
0
12 hrs.
24
6 18 • Dial the desired duration
of the UnOccupied period.
• Press start button at the time of day
you want the UnOcc. period to begin.
Timer Active light turns on.
Start
UnOccupied Duration
0 = always Occupied
24 = always UnOccupied
Maximum
Supply
Zone 2
Zone 4
DHW
Pump / Vlv Zone 1 /
Cooling
90
70
50
30
10
% of full
output
1
2
3
4
House Control 370
- Data Brochure
M
M
M
M
PRGM
S
T I M E AMPM UNOCC OVR S M W T F T
1
2
LR 58233 E150539
70 70
70
70
M
House Control 370
Four Zones, DHW, Boiler / Mixing
Test
Made in Canada by
tekmar Control Systems Ltd.
N
1 2 3
Pmp
4
Var.
Pmp
Power
L
Sys
11 12 13 14
130 °F
Off 165
Min. Boiler
Supply / Return
100
Power
Var. Pump
Relays 120 V (ac) ±10% 50/60 Hz 1000 VA
240 V 50/60 Hz 2.4 A 1/6 hp, fuse T2.5 A 250 V
120 V (ac) 5 A 1/3 hp, pilot duty 240 VA
Power WWSD
Minimum
Boiler
DHW
Demand
System
Pump
Boiler Zone 3
24 25 23 26 27 28
Do not apply power here
29 21 22
1-2
Com
1 3-4
Com
70 °F
(21 °C)
40
(4) 100
(38)
UnOccupied
5 6 7 8 9 10
Occupied
Optimum Start / Stop
UnOccupied
Timer Active 24 hr. Timer
0
12 hrs.
24
6 18
• Dial the desired duration of the
UnOccupied period.
• Press start button at the time of day
you want the UnOcc. period to begin.
Timer Active light turns on.
Start
0.2
2
3.6
1
3
Heating Curve
15 16 17
Com
Sen
RTU
1
RTU
2
Com
Sen
RTU
3
RTU
4
Com
Sen
UnO
Sw
Zo
In
Com
Sen
Boil
Sen Sup
Sen Out
Sen
20 18 19
Boiler Pmp / Vlv
DHW DHW
Dem Dem 2 3 4
Caution: Signal
wiring must be
rated at least 300V
Max. System
Supply
120
170 °F
220
UnOccupied
Duration
0 = always Occupied
24 = always UnOccupied
Maximum
Supply
Zone 2
Zone 4
DHW
Pump / Vlv Zone 1 /
Cooling
90
70
50
30
10
% of full
output
1
2
3
4
DHW Pump
DHW Priority
Off
DHW Valve
DHW during UnOcc.
Boiler Return
Thermal Motor
Boiler
Mixing Occ/UnOcc
Zone 1 Cooling
Zone 1 Heating
1 4 3
Occ. only
2
Off
Optimum Start
Boiler Supply
Zone
N R T L / C
LR 58223
R
Input
120 V (ac)
Power
Supply
Input
tekmar
Zone Control
Output
System
Pump
Output
Boiler
Input
Outdoor Sensor
Included
Inputs
Universal Sensors
Included / Optional
Input
tekmar RTUs or
Indoor Sensors
Input
DHW
Demand
signal
Output
Var. Speed
Injection
Pump
Outputs
Zone Valves or
Zone Pumps
Output
DHW Valve or
DHW Pump
Input
tekmar
Timer
or
Cooling