Post START-UP Check, Follow-Up | Raypak HD401, HD101 manual

Follow-Up

•Safety checks must be recorded as performed.

•Turn unit on.

After main burner ignition:

• Check Manometer(s) for proper reading(s).

• Cycle unit several times and recheck readings.

• Re-analyze with unit running record or print results.

• Remove all Manometers and replace hose, replace all gas pressure caps.

• Check for gas leaks one more time.

POST START-UP CHECK

Check off steps as completed:

1.	Heater and heat distribution units or storage tank
	filled with water?
2.	Automatic air vent, if used, open two full turns dur-
	ing venting procedure?
3.	Air purged from system?
4.	Air purged from gas piping? Piping checked for
	leaks?
5.	Followed start-up procedure for proper start-up?
6.	Is burner flame visible?
7.	Test safety controls: If heater is equipped with a
	low water cut-off or additional safety controls, test
	for operation as outlined by manufacturer. Burner
	should be operating and should go off when con-
	trols are tested. When safety devices are restored,
	burners should reignite after pre-purge time delay.
8.	Test limit control: While burner is operating, move
	indicator on high limit control below actual heater
	water temperature. Burner should go off while
	blower and circulator continue to operate. Raise
	setting on limit control above heater water temper-
	ature and burner should reignite after pre-purge
	time delay. NOTE: This test doesn’t apply to fixed
	setting high limits.
9.	Test ignition system safety device:
	· Turn on manual gas valve. Turn power on.

·When the unit is in operation. Disconnect combustion air blower pressure switch, burner should go off immediately.

·Wait 5 minutes.

·Reconnect combustion air pressure switch, burner should reignite after pre-purge time delay.

10.To restart system, follow lighting instructions in the Operation section.

11.High limit control set to design temperatu re requirements of system? For multiple zones: flow adjusted as required in each zone?

12.Heater cycled with thermostat? Raise to highest setting and verify heater goes through normal start-up cycle. Reduce to lowest setting and verify heater goes off.

13.Observed several operating cycles for proper operation?

14.Set room thermostat or tankstat to desired temper- ature?

15.Reviewed all instructions shipped with this heater with owner or maintenance person, returned to envelope and given to owner?

Air Filter Inspection/Removal

1.Turn power off.

2.Locate the Air Filter panel below the air intake duct.

·	Set thermostat to call for heat.

Fig. 33: Locate the Air Filter Panel

HD101, HD401 specifications

Raypak is renowned for its commitment to high-quality heating solutions, with the HD101 and HD401 models standing out in their product range. These units are designed specifically for commercial applications, providing reliable and efficient hydronic heating systems. The HD series embodies innovation while addressing the unique demands of larger spaces.

One of the main features of the HD101 and HD401 is their stainless steel construction, which ensures increased durability and resistance to corrosion. This design choice enhances the longevity of the units, making them ideal for various installations in commercial or industrial settings.

Both models are equipped with a high-efficiency heat exchanger that maximizes heat transfer while minimizing energy consumption. This feature is particularly significant in today’s environmentally conscious market, as it contributes to lower operating costs and reduced carbon footprints. The heat exchangers are engineered for easy maintenance, offering simplicity when service is required.

In terms of technology, the HD101 and HD401 include advanced digital controls that allow for precise temperature regulation. This user-friendly interface enables operators to easily manage and monitor heating parameters, facilitating optimal performance and energy management.

The models also feature modulating burners that adjust their output according to the heating demand. This capacity for modulation results in smoother operation and an overall increase in efficiency, as the burners can maintain consistent temperatures without excessive energy use.

Another noteworthy characteristic is their compatibility with various control systems, including BMS (Building Management Systems). This adaptability allows for seamless integration into existing infrastructure, providing users with greater versatility and control over their heating environments.

Both the HD101 and HD401 come with advanced safety features, including flame rollback protection and pressure monitoring, ensuring safe operation even in demanding conditions. Additionally, their compact design allows for easy installation in limited spaces while still providing powerful heating capabilities.

Ultimately, the Raypak HD101 and HD401 are exceptional choices for those in need of high-efficiency commercial heating solutions. With their robust construction, advanced technology, and user-friendly features, these models promise to deliver reliable performance and energy savings for years to come. Whether for a large facility or a specific industrial application, they stand ready to meet the heating challenges of today’s commercial landscape.