Trane Symbio 210 Installation, Operation And Maintenance Manual page 51

Table 16. Local heat only with no fan present (continued)
Configuration
Local
On/Off electric
(1 to 3 stages)
On/Off hot water
(1 stage)
Modulating hot water
Table 17. Local heat only with parallel fan present
Configuration
Local
Fan Not applicable
Fan and PWM electric Not applicable
(1 to 3 stages)
SCR electric Not applicable
BAS-SVX091A-EN
Remote
Not applicable Local thermostatic:
•
•
Each stage represents an equal percentage of total capacity. Total capacity is limited by
communicated supply heat control.
Not applicable Local thermostatic:
•
•
Total capacity is limited by
communicated supply heat
control
Not applicable
•
•
•
•
Remote Parallel Fan
Parallel Fan
Parallel Fan
• Local PI capacity
loop
• SCR heat capacity
= total capacity
• Total capacity
limited by
communicated
supply heat control
Calibration, Operation Modes, and Control
Method of Control
Stage 1
Local thermostatic:
On: Zt < HSP • On: Zt <HSP - 1°F
(0.56°C)
Off: Zt ≥ HSP + 0.5 °F
(0.28°C) • Off: Zt ≥ HSP - 0.5°F
(0.28°C)
Not applicable
On: Zt < HSP
Off: Zt ≥ HSP + 0.5°F
(0.28°C)
Not applicable
Local PI capacity loop
Modulating valve capacity = Total capacity
Valve drive incrementally open/closed
Total capacity limited by communicated supply heat
control
Stage 1
Not applicable
• Local PI capacity
loop.
• Each stage
represents an
equal percentage
of total capacity
PWM Output (one
stage = 100%; two
stages = 50%
each; three stages
= 33.33% each).
• Total capacity is
limited by
communicated
supply heat
control.
Not applicable
Stage 2 Stage 3
Local thermostatic:
• On: Zt < HSP - 2°F
• Off: Zt ≥ HSP - 1.5°F
(16.9°C)
Not applicable
Not applicable
Not applicable
Method of Control
Stage 2
Not applicable Not applicable
• Local PI capacity loop.
• Each stage represents an equal percent of
total capacity (1 stage = 100%, 2 stages =
50% each).
• PWM output.
Total capacity is limited by communicated supply
heat control.
Not applicable SCR electric
Stage 3
51