Armstrong Digital-Flo DF41540, Инструкция по установке, эксплуатации и обслуживанию

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Designs, materials, weights and performance ratings
are approximate and subject to change without notice.
Visit armstrong international.com for up-to-date information.
Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
Tel. (269) 279-3602 Fax. (269) 279-3130
Page 17 of 44
WARNING! The following procedure should ONLY be performed by qualified persons.
DO NOT attempt any of the following actions if you are:
1. NOT experienced with handling high-voltage, electrical power
2. NOT using appropriate personal protective equipment (PPE)
DO contact a qualified HVAC or electrical contractor instead.
WARNING! Water conducts electricity. DO NOT stand in water or touch wet surfaces
while working with “live” electrical equipment.
WARNING! Failure to follow these instructions may result in a fire, explosion, or
electrocution causing property damage, personal injury, or even death.
CAUTION! If cold water pressure is lost while steam is present, overheating and
hydraulic pressure shock “water hammer” damage may occur in the heater and
the plumbing system. Verify that adequate water volume and pressure is
supplied to the Digital-Flo
®
BEFORE introducing steam into the heat exchanger.
Only designated, qualified and competent personnel shall conduct commissioning in
accordance with these instructions.
Commissioning
1. Perform a visual overview and confirmation that the Digital-Flo
®
is installed per our installation schematics located in
our IOM’s
a. Confirm all water supply lines are connected correctly, and that all isolation valves are closed.
i. Hot Water
ii. Cold Water
iii. Mixed Water
iv. Recirculation return from the system loop to the Digital-Flo
®
b. Confirm all steam/condensate lines are connected correctly, and that all isolation valves are closed.
2. Energize the Digital-Flo
®
control panel, turn switch(es) on, and verify DRV display(s) is/are illuminated.
a. Confirm the safety shutoff valve(s) opens (blue actuator valve on hot supply line to DRV)
3. Flood the system slowly and in the following sequence:
a. Cold water supply
b. Mixed water outlet
c. Hot water supply
4. Create a demand in the system loop
a. Open 4-5 fixtures (slop sinks, showers, baths, etc…)
5. Turn on recirculation pump(s)
a. Confirm continous minimum flow of ≥ 5 gpm to each DRV40, ≥ 10 gpm to each DRV50, or≥ 10 gpm to each DRV80.