Cambridge Air Solutions.
30
M-Series Technical Manual
START-UP INSTRUCTIONS FOR NON-VARIABLE FREQUENCY DRIVE (VFD)
HEATERS
1. Visual Inspection Of Equipment
(page 30)
2. Electrical Supply Voltage Verification
(page 30)
3. Gas Supply Pressure Verification
(page 31)
4. Blower Rotation Check
(page 31)
5. Burner Profile Damper Pressure Drop Check
(page 31)
6. Motor Amp Draw Check
(page 32)
7. Calculating and Adjusting
Burner Manifold Pressure
(page 32)
8. Gas Valve Leak Check
(page 33)
9. Gas Train Leak Check
(page 34)
10. Minimum Fire Setting
(page 34)
11. Low Fire Start Adjustment
(page 35)
12. Final Heater Preparation
(page 36)
13. Preliminary Remote Control Station
Operational Check
(page 36)
After start-up, please complete and fax the M-Series
Start-Up Checklist to the Cambridge Customer Service
Group. Receipt of a completed checklist will extend
the start date for your warranty period to the date of
the start-up but not to exceed six months from date of
shipment.
If applicable, compare all variable frequency drive
(VFD) parameters with specifications provided in the
manual holder of the Electrical/Gas Enclosure in the
heater.
IMPORTANT
Read the following instructions carefully. Any
unauthorized modifications to, or deviations
from these instructions may void the warranty.
1. VISUAL INSPECTION OF EQUIPMENT
a. Check for any physical damage from shipping
or installation that could render the heater
inoperable.
b. Verify all heater accessories and filters (if
applicable) have been properly installed.
c. Check for loose components (belts, plugs,
terminal screws, etc.).
d. Verify the access doors and controls enclosure
are free from obstructions, such that they can
be fully opened.
e. Verify the field wiring, both primary and
control, has been installed according to the
Cambridge Air Solutions wiring diagram and
the National Electrical Code.
f. Verify that a sediment trap has been provided
upstream of other gas train components.
g. Verify the high pressure regulator and/or vent
limiter, if applicable, have been vented to the
outside of the building at least 10 feet from
any intake opening.
h. Verify the factory supplied manual gas shut-
off cock is installed external to the heater and
downstream of the high pressure regulator, if
applicable.
i. Verify that the gas piping unions are tight.
j. Verify that the burner union is tight.
2. ELECTRICAL SUPPLY VOLTAGE
VERIFICATION
For model M110 - M115 heaters, remove electrical
enclosure access door and check the electrical
supply voltage at the terminal block provided off
of the disconnect switch. For model M118 - M140
heaters, remove electrical control enclosure access
door and check the electrical supply voltage at the
disconnect switch. For electrical control enclosure
drawings, see page 78 for M110 - M115, page 79
for M118 - M136 and page 80 for M140 .
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Страница 112: ...760 Long Road Crossing Dr Chesterfield MO 63005 Phone 636 532 2233 800 899 1989 Fax 636 530 6133 www cambridgeair com ...