28
Start-Up Procedures
Quick Review
• Before Installing
-
Make sure that there is enough space for
installing Water and gas line.
-
Verify vent/air termination is located as required.
• Install Water Piping
-
Water Heater piping must be sized to the mini-
mums listed in the Water Heater manual. Using
smaller piping will cause performance problems.
•Install Vent & Air Piping
-
Slide the air inlet pipe and vent pipe into the
Water Heater adapters.
-
Make sure the terminations are placed as
required in the manual and that terminations are
at least 12 inches above normal snow line.
• Install Condensate Piping / Tubing & Components
-
Pipe condensate drain to suitable drain or con-
densate pump.
•Install Gas Piping
-Install a union and shutoff valve.
• Wire the Water Heater
-Connect power wiring.
• Start up, Adjust & Test
-
Follow the Water Heater manual instructions to
clean the system if needed, then fill and check
water chemistry.
Final check list
• Final check : Installation conditions.
-
Is there a drain which is close to the Water
Heater?
-
Is there any combustible material near the Water
Heater or vent pipe?
-
Is air supply sufficient for proper operation of the
Water Heater?
-
Are the proper service clearances maintained?
-
Is the distance between the Water Heater and
point of vent termination minimized?
-
Are the proper space from windows, doors, and
other intake vents maintained?
• Final check : Gas pipe installation
-
Is the gas supply line equipped with a manual
shut off valve?
-
Is the gas supply line a minimum of 3/4˝ diameter?
-
Is the gas supply line length and diameter ade-
quate to deliver the required BTU’s?
-
Has the gas supply line pressure been meas-
ured?
-
Does the gas type match with the type indicated
on the rating plate?
• Final check: Air/Vent pipe installation
-
Has the Water Heater been vented with PVC,
CPVC, Polypropylene, or BH Special Vent (S636
PVC, CPVC) in accordance with this manual
and your local code?
-
Is the vent termination at least 12˝ above the
exterior grade?
-
Is the total vent length within the maximum vent
length restriction?
-
Have you checked the air/vent piping for leaks?
-
Have you properly supported the vent termina-
tion?
-
Are all vent runs properly supported?
-
Is the vent sloped upward toward the vent termi-
nation at a rate of 1/4˝ per foot (2% grade)?
Marquis Manual_61515_Water Heater 7/1/15 1:58 PM Page 31
Summary of Contents for Marquis TWH180
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Page 27: ...24 Control System Ladder Diagram Marquis Manual_61515_Water Heater 7 1 15 1 58 PM Page 27 ...
Page 34: ...31 Repair Parts Diagram Marquis Manual_61515_Water Heater 7 1 15 1 58 PM Page 34 ...
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