PRE-START-UP

NOTE: Digital manometers are not recommended.

Filling System-Heating Heaters Preparation for Start-Up

Fill system with water. Purge all air from the system using purge valve sequence. After system is purged of air, lower system pressure. Open valves for normal system operation, fill system through feed pressure. Manually open air vent on the compression tank until water appears, then close vent.

WARNING: Do not turn on gas at this time.

Check Power Supply

Domestic Hot Water Heaters

Purge all air from system before lighting heater. This can be normally be accomplished by opening a down- stream valve.

Inspect Venting System:

1.Check all vent pipe connections and flue pipe material.

2.Ensure vent terminations are installed per code and are clear of all debris or blockage.

Pre-Start-Up Check

1.Verify heater is filled with water.

2.Check system piping for leaks. If found, repair immediately.

3.Vent air from system. Air in system can interfere with water circulation.

4.Purge air from gas line up to heater.

INITIAL START-UP

Tools Needed

One 8–0–8, 16” scale manometer

Two 6–0–6, 12” scale manometers

7/16” open end wrench

1/2” open end wrench

Screwdriver (Standard & Phillips)

3/8” open end wrench

Multi-meter

3/16” Allen wrench

3/32” Allen wrench (Honeywell gas valve)

5/32” Allen wrench (Invensys gas valve)

#10 Torx driver w/center hole (Invensys gas valve)

Fig. 29: Check Power Source

With volt meter at incoming power check voltage between:

Hot - Common (~120 VAC)

Hot - Ground (~120 VAC)

Common - Ground (< 1 VAC)

WARNING: If Common - Ground is > 1 VAC,

STOP: Contact electrician to correct ground failure. Failure to do this may burn out 120V-24V transformer, or may cause other safety control damage or failure.

Attach Manometers to Measure Pressures

Attach 16" scale manometer to the main gas shut- off valve supply pressure tapping.

Attach one 12" scale manometer to the manifold gas pressure tapping. (See gas valve detail on page 7.)

Attach one 12" scale manometer to the tee near the blower housing.

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Raypak HD401, HD101 manual Pre-Start-Up, Initial START-UP

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.