Setting Fan Speed; Fan Performance Table - Johnson Controls RJ H Series Installation Operation & Maintenance

RJ SERIES INSTALLATION MANUAL

Setting Fan Speed

ECM2 fan motors have a 12-speed selector dip switch on the logic board (SW1) and are factory set for optimum performance. To change
speeds, select the appropriate speeds on dip switch SW1. Consult the ECM2 fan performance table below for specific airflow and switch
information.
CAUTION: Disconnect all power before performing this operation.
Fan Performance Data
ECM Motor
Single Speed
MAX
MODEL
ESP 1 2
300 400
015 0.50
L
400
300
018 0.50
L
400
022 0.50
400
030 0.50
650 750
036 0.50
036
800 1000
0.75
w/1hp* L
650 800
042 0.50
042 900
800
0.75
w/1hp* L
650 800
048 0.50
048 900
800
0.75
w/1hp*
800 950
060 0.75
950
800
070 0.75
Dual Capacity
MAX
MODEL
ESP 1
026 0.50
650
038 0.50
038 800
0.75
w/1hp* L
650
049 0.50
049
800
0.75
w/1hp* L
800
064 0.75
800
072 0.75
Factory settings are at recommended L-M-H DIP switch locations
M-H settings MUST be located within boldface CFM range
Lowest and Highest DIP switch settings are assumed to be L and H respectively
A 12-position DIP switch package on the control allows the airflow levels to be set for low, medium, and high speed when
using the ECM2 blower motor. Only three of the DIP switches can be in the "on" position.
• The first "on" switch (the lowest position number) determines the low speed fan setting.
• The second "on" switch determines the medium speed fan setting.
• The third "on" switch determines the high speed fan setting.
The example to the right shows SW1 on the control board configured for the following 042 airflow settings.
Low Speed Fan: 900 CFM
Medium Speed Fan: 1150 CFM
High Speed Fan: 1450 CFM
AIR FLOW DIP SWITCH SETTINGS
3 4 5 6
500 600 700
M H
500 600 700
800
M H
500 600 700 800
L M
H
500 600 700
800
L M
850 1000 1100 1200
M
L
1100 1300 1500 1600
M H
900 1050 1150 1250
L
M
1000 1200 1400 1600
M H
900 1050 1150 1250
L
1000 1200 1400 1600
L M H
1100 1300 1500 1750
L
M
1100 1300 1500 1750
L M
2 3 4
400 500 600
L
750 850 1000
L
1000 1100 1300
M H
800 900 1050
L
900 1000 1200
950 1100 1300
L
950 1100 1300
L
7 8 9 10
900 1000 1100 1200
900 1000 1100 1200
H
1300 1400 1500
H
1800
1350 1450 1550
H
1700 1850 2000 2200
1350 1450 1550
M H
1700 1850 2000 2200
1950 2100 2300
H
1950 2100 2300
H
AIR FLOW DIP SWITCH SETTINGS
5 6 7
700
800 900
M H
1100 1200 1300
M H
1500 1600 1800
1150 1250 1350
M
1400 1600 1700
M H
1500 1750 1950
M H
1500 1750 1950
M
CFM is controlled within ±5% up to the maximum ESP
Max ESP includes allowance for wet coil and standard filter
20
11 12
2300 2400
2300 2400
5/25/07
8 9 10
1000 1100 1200
1400 1500
1450 1550
H
1850 2000 2200
2100 2300
2100 2300
H
11 12
2300 2400
5/30/06
SW1
Off On
1
2
3
4
5
6
7
8
9
10
11
12