Daikin EWAP280MBYNN [207/452] Functional control for a standalone unit

ESIE05-07 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–11

Part 2

2 Functional Control for a Standalone Unit

2.1 What Is in This Chapter?

Introduction This chapter will give more detailed information about the functions used to control the system.

Understanding these functions is vital when diagnosing a malfunction, which is related to functional

control. In this chapter we will discuss these functions for standalone units only. By standalone unit we

mean MS Option is "NO" or MS Option is "YES" and Mode is "Disconnected". (MS Option = Master

Slave Option)

Overview This chapter contains the following topics:

Topic See page

2.2–Operation Flowchart 2–12

2.3–On/Off Management 2–14

2.4–Thermostat Control 2–15

2.5–Manual Control 2–24

2.6–Freeze-up Control 2–26

2.7–Heat Pressure Control 2–30

2.8–Superheat Control 2–38

2.9–Pump Control 2–43

2.10–Lead-lag Control 2–45

2.11–Capacity Limitation 2–46

2.12–Floating Setpoint - Ambient Mode 2–47

2.13–Free Cooling on Ambient Temperature 2–48

2.14–Heat Recovery 2–50

2.15–Changeable Digital Inputs 2–52

2.16–Changeable Analogue Inputs 2–53

2.17–Changeable Digital Outputs 2–55

2.18–Schedule Timer Management 2–56

2.19–Pumpdown 2–62

2.20–Password Function 2–64

2.21–100% Capacity, General Operation 2–65

2.22–Reversing Valve 2–66

2.23–Evaporator Heater-tape 2–67

2.24–Low pressure Bypass 2–68

2.25–Simulation 2–69

2.26–BMS Function 2–71

ESIE05-07.book Page 11 Wednesday, October 11, 2006 10:42 AM