McQuay ROOFTOP R08019034483, Руководство по установке

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English
1-17
Remark: X = Don ʼ t care.
(2) For BMS control, the outputs are indicated as shown in the table below.
BMS input
(SW3-ON)
ERROR DEFROST
Alarm
output
Output1 Output2
Defrost
signal
ON/OFF
OPERATING
MODE
COOL/HEAT
SET POINT
(AL) (O1) (O2) (DFRT)
0 0 X X X X 0 0 X
0 1 X X X X 0 1 X
1 0 X X X X 1 0 X
1 1 X X X X 1 1 X
X X X 1 X 1 X X X
X X X X 1 X X X 1
Remark: X = Don ʼ t care.
The diagram below shows the position for terminal blocks in the controller board which are used for thermostat
control and BMS system. Beside that, the output pins for auxilliary electrical heater are shown as well.
(3) Auxilliary Electrical Heater Output (HTR1 and HTR2)
•
There are two output pins (HTR1 and HTR2) on controller main board, which are used to energize the heater
contactor. The contactor must be selected accordingly to avoid any safety issue(s).
• The heater shall be installed in accordance with local and national legislation. It must comply with EN60335-2-40.
• Thermal fuse(s) shall be installed on the heater to eliminate any danger or damage on the heater/unit. This is
especially critical when there is any malfunction happen to controller main board or blower.
• The heater shall be in a safe location, whereby no risk of damage could be happen on the unit.
• Use non- fl ammable duct for the unit that is installed with heater
• Use different power supply for electrical heater and install a circuit breaker for each of the heater.
• Maximum temperature in the unit must not exceed 60°C. Temperature measurement shall be taken during the
installation or commisioning in order to ensure the temperature not exceed this value.
Select the proper safety device or thermal protector accordingly.
• The heater shall never be installed inside the unit. The recommended location for the heater is inside the supply
duct, whereby the distance of the heater is suf
fi cient to ensure the temperature inside the unit does not exceed 60°C.
(iii) Dry contact output (TB_BMS-O)
• For TB_BMS-O, there are 4 monitoring outputs: error alarm; output1; output2; and defrost signal.
• Refer table below for installation recommendations:
Input TB_BMS-O Rated voltage Rated current (A) Wire size
Alarm output (AL) 230V AC/125V AC/30V DC 1/3/3
AWG22~18
Output1 (O1) 230V AC/125V AC/30V DC 2/3/3
Output2 (O2) 230V AC/125V AC/30V DC 3/3/3
Defrost signal (DFRT) 230V AC/125V AC/30V DC 4/3/3
• The output signals will vary depending on the con fi guration of controller main board, whether it is thermostat
control or BMS control.
(1) For thermostat control, the outputs are indicated as shown in the table below.
Thermostat input
(SW1-ON)
ERROR DEFROST Alarm output Output1 Output2
Defrost
signal
G Y1 Y2 W1 W2 (AL) (O1) (O2) (DFRT)
0 0 0 0 0 X X X 0 0 X
1 0 0 0 0 X X X 0 1 X
X 1 0 X X X X X 1 0 X
X 1 1 X X X X X 1 0 X
X 0 X 1 0 X X X 1 1 X
X 0 X 1 1 X X X 1 1 X
X X X X X 1 X 1 X X X
X X X X X X 1 X X X 1
Thermostat Control (TB_THM-l)
Connect to
third party
controller
BMS System (TB_BMS-l)
Connect to
BMS
System
Dry Contact Outputs (TB_BMS-O)
Controller Main Board
Alarm
output
(AL)
Output
1 (O1)
Output
2 (O2)
Defrost
signal
(DFRT)
Heater Output (HTR1 and HTR2)
Connect to
heater
contactor
Connect to
heater
contactor
Unit
on/ of
f
Cool/ Heat
mode select
Cool/
Heat
set
point
Supply
V
o
ltage
24V AC
Thermostat control
inputs
(G, Y1, Y2,
W1,
W2)
IM 1 5RTBR-1209(0)-EN.indd 17 IM 1 5RTBR-1209(0)-EN.indd 17 1/14/10 11:37:44 AM 1/14/10 11:37:44 AM