Empire Comfort Systems VFHS-20R-4, VFHS-20/10T-4 instruction

10,000 BTUH

7,000 BTUH

Cleaning and Maintenance/Pilot Oxygen Depletion Sensor Pilot

When the pilot has a large yellow tip ﬂame, clean the Oxygen Depletion Sensor as follows:

1. Clean the ODS pilot by loosening nut B from the pilot tubing. When this procedure is required, grasp nut A with an open end wrench.

2. Blow air pressure through the holes indicated by the arrows. This will blow out foreign materials such as dust, lint and spider webs. Tighten nut B also by grasping nut A.

Warning:

Figure 18

Never use needles, wires, or similar cylindrical objects to clean the pilot to avoid damaging the calibrated ruby that controls the gas ﬂow.

MAIN BURNER AND THERMOSTAT OPERATION

TheVFHS-20/10Tgas control maximum and minimum inputs are listed below.

OFF is the OFF position.

PILOT is the PILOT position.

VFHS-20/10T

Max.	20,000 BTUH
Min.	7,000 BTUH

VFHS-20/10T can be converted to 10,000 BTU for Bedroom Installation

Max.

Min.

VFHS-20R Main Burner Operation

The gas control modulates from a minimum input of 14,000 BTU/HR (LO setting) to a maximum input of 20,000 BTU/HR (HI setting).

Cleaning and Maintenance / Main Burner Warning: Turn off heater and let cool before cleaning.

Caution: You must keep control areas, burner and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualiﬁed service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding materials, etc.

Logs

Be careful cleaning and handling logs so as not to damage them. If logs break or fall apart in handling, spray the broken pieces and ﬁbers with water, sweep up and discard.

VFHS-20T CONVERSION TO VFHS-10T FOR BEDROOM INSTALLATION

For installation in a bedroom the VFHS-20T, 20,000 Btu input must be converted to a VFHS-10T 10,000 input ﬁreplace.

Attention: Main burner oriﬁce for conversion to VFHS-10T is located in your Owner's Envelope.

Bedroom Installation: VFHS-10T Only

The bedroom must be an unconﬁned space.ANSI Z223.1/NFPA54 deﬁnes an unconﬁned space as “a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8m3 per kw) of the aggregate input rating of all appliances installed in that space.”

Refer to "Provisions for Adequate Combustion and Ventilation Air," Page 6.

Instructions for Conversion of a VFHS-20T into a VFHS-10T:

1.If installed, turn OFF gas supply to ﬁreplace.

2.Lift upward to remove screen front.

3.Remove logs from ﬁreplace.

4.Remove rear log support from inner casing [three (3) 10 x 1/2" screws].

5.Disconnect supply tubing from oriﬁce ﬁtting.

6.Remove air shutter and oriﬁce ﬁtting from venturi (throat) of main burner by removing one (1) Phillips screw.

7.For Natural gas only, remove coupling from oriﬁce ﬁtting.

8.Remove air shutter from oriﬁce ﬁtting.

9.For Natural gas only, remove 20,000 Btu main burner oriﬁce marked 49 from oriﬁce ﬁtting and replace with 10,000 Btu main burner oriﬁce marked 1.30mm.

9.For Propane (LP) gas only, remove 20,000 Btu, main burner oriﬁce marked 55 from oriﬁce ﬁtting and replace with 10,000 Btu main burner oriﬁce marked 64.

10. Replace air shutter onto oriﬁce ﬁtting.

11. For Natural gas only, replace coupling onto oriﬁce ﬁtting. 12. Attach air shutter and oriﬁce ﬁtting onto venturi (throat) of

main burner with one (1) Phillips screw from Step 6. Attention: Air shutter will have a 1/16" opening on Natural gas. Air shutter will be fully open on Propane (LP) gas.

13. Attach supply tubing onto oriﬁce ﬁtting.

14. Attach rear log support to inner casing with three (3) 10 x 1/2" screws from Step 4.

15. Turn on gas supply to ﬁreplace and check all gas connections for leaks with soap solution, watching for bubbles on all gas connections.

16. Install logs into ﬁreplace, refer to "Log Placement", Page 12.

17. Replace screen front onto ﬁreplace.

18. Check main burner ﬂame for proper ﬂame characteristics. Refer to "Operation Instructions/Flame Appearance, Page 13.

19. Refer to rating plate in order to check box for which installation applies, either 20,000 or 10,000 Btu input.

20. Conversion from 20,000 Btu to 10,000 Btu input ﬁreplace is completed.

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VFHS-20R-4, VFHS-20/10T-4 specifications

Empire Comfort Systems has consistently been a frontrunner in the heating industry, and their VFHS-20R-4 and VFHS-20/10T-4 models are prime examples of their commitment to quality and innovation. Designed for efficient and effective heating solutions, these units offer unique features that cater to diverse customer needs.

The VFHS-20R-4 is part of Empire's versatile vent-free heater line, providing an impressive output of 20,000 BTUs. Its design allows for flexible installation options, making it ideal for both residential and commercial applications. One of the standout features of the VFHS-20R-4 is its advanced heating technology, which utilizes radiant heat to warm your space quickly and efficiently. This method not only provides powerful heat but also enhances comfort by distributing warmth evenly.

Furthermore, the VFHS-20R-4 includes a built-in safety pilot system that ensures safe operation. This technology detects any malfunctions and automatically shuts the unit off if necessary, providing peace of mind for users. Additionally, the unit's thermostatic control allows for easy temperature management and helps maintain an energy-efficient environment.

On the other hand, the VFHS-20/10T-4 model is tailored for areas requiring a dual heating approach. This innovative unit combines both vent-free and vented heating options, offering flexibility based on user preferences or regulatory requirements. With a heat output of 20,000 BTUs, it delivers ample warmth while also featuring a compact design that seamlessly fits into various spaces.

Both models boast a sleek and modern aesthetic, ensuring they complement any decor. They are available in multiple finishes, allowing users to choose the one that best suits their style. The ease of installation is another significant advantage, with straightforward instructions enabling users to set up the units with minimal hassle.

In terms of energy efficiency, both the VFHS-20R-4 and VFHS-20/10T-4 are equipped with technologies that minimize energy consumption while maximizing heat output. Their environmentally friendly design helps reduce emissions, making them suitable options for eco-conscious consumers.

In conclusion, the Empire Comfort Systems VFHS-20R-4 and VFHS-20/10T-4 models represent the pinnacle of heating technology. With their efficient features, safety enhancements, and stylish designs, they stand out as excellent choices for anyone seeking reliable and effective heating solutions in their living or working spaces. Whether you need a versatile heating option or a dual-function solution, Empire Comfort Systems delivers with these remarkable models.