York EX Series Installation, Operation & Maintenance Instructions Manual page 67

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
NOTE(S):
1. Every unit must be properly grounded..
2. Connect a following interlock if necessary.
(The * tells you to make sure to connect.)
a. Operating interlock
* Chilled/hot water operation interlock,air
handling unit interlock
● Gas duct damper full open interlock
b. Cooling water pump interlock
* Cooling water pump operation interlock
c. Normally monitoring interlock
● S eismoscope relay, abnormal room temper-
ature sensor
JOHNSON CONTROLS
d. Monitor interlock in combustion
● S uction/exhaust fan interlock, abnormal soot
and dust concentration
e. Emergency failure interlock
● Gas leak detector
3. As for terminal base position & contact specifica-
tion, see Figure 16 on page 64
4. Use a shield wire which is max. extension 200 m
and more than 1.75 mm2
5. Terminals which are not shown in the figures are
already connected in the factory.
SECTION 4 - TECHNICAL DATA
67
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